CN105576678B - A kind of mixed energy storage system and method based on cold and hot electric system - Google Patents
A kind of mixed energy storage system and method based on cold and hot electric system Download PDFInfo
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- CN105576678B CN105576678B CN201610111638.1A CN201610111638A CN105576678B CN 105576678 B CN105576678 B CN 105576678B CN 201610111638 A CN201610111638 A CN 201610111638A CN 105576678 B CN105576678 B CN 105576678B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
Abstract
The present invention provides a kind of mixed energy storage system and method based on cold and hot electric system, which includes PLC controller, host computer, unsteady flow wave filter, softening booster, power follower, softening electric storage means, bridge rectifier filter circuit, adopts control circuit and heat-storing device；This method is the logical output values of the first operational amplifier and the second operational amplifier of adopting control circuit, the voltage of lead accumulator group in collection softening electric storage means, section where the voltage that PLC passes through logic judgment ac bus, is controlled the storage energy pattern of softening electric storage means and heat-storing device；The voltage of lead accumulator group in collection softening electric storage means, PLC are controlled the first electromagnetic relay and the second electromagnetic relay, are realized to heat-storing device and softening electric storage means progress energy storage control by the storing up electricity situation of judgement softening electric storage means lead accumulator group.
Description
Technical field
The invention belongs to electrical engineering technical field, and in particular to a kind of mixed energy storage system based on cold and hot electric system and
Method.
Background technology
With the development and progress of human society, people's demands for quality of life are getting higher and higher, to electric, hot, cold need
Ask also increasing.In today's society, energy-provision way is also substantially centralized supply, i.e., power supply, heat supply, cooling are relatively only
Vertical.And because energy supply side and load side are generally apart from each other, such energy-provision way may result in a large amount of energy losses and pass
During defeated, and traditional centralized energy-provision way, also there are the phenomenon that a large amount of waste heats are wasted, this causes the energy
Effective rate of utilization it is generally relatively low.Fossil energy is limited, and over time, the exploitation of the mankind, its reserves is not yet
Disconnected to reduce, the mankind have had appreciated that the sense of crisis of lack of energy, and are seeking its alternative energy source.But reality proves,
In longer period of time, utilization of the mankind to the energy will be based on fossil energy.
Therefore, the mankind more rationally will efficiently utilize existing fossil energy, how improve the utilization of fossil energy
Efficiency is also just into mankind's urgent problem.Distributing-supplying-energy technology causes as a kind of new energy integration system
The concern of people.Distributing-supplying-energy system meets the cascade utilization principle of energy, i.e. the energy of high-quality is used to generate electricity, medium
The energy of quality is used to freeze and heat, and the energy of low quality is used to supply domestic hot-water, dehumidifying etc., passes through each level energy
Utilize the combination of process so that the effective rate of utilization of the energy has relative to central energy supply to be increased substantially.Simultaneously as
Energy efficiency, which improves, causes pollutant emission to decline, this causes the feature of environmental protection of distributing-supplying-energy system relative to traditional centralization
Energy-provision way there has also been very big improvement.Most important part of the cogeneration cooling heating system as distributed energy supply, because
The features such as energy transmission loss of relatively low investment, higher energy supply reliability and very little, is worldwide increasingly subject to weight
Depending on its application in the production and living of people is also more and more.
Although cogeneration cooling heating system has good an application value and prospect, but there is also the problem of some typical cases, its
The stability of middle system is exactly an importance.Due to scale is smaller, cogeneration cooling heating system adds load variations to being
The stability influence of system.If set about directly system adjust in real time from system dynamic system to solve the problems, such as this, just
The dynamical system output power and power generation, the energy distribution coefficient of heat supply of frequently adjustment system are needed, can so make using energy source
Efficiency is significantly reduced, it is necessary to put into substantial amounts of manpower, financial resources shorten the use longevity of system to system progress maintenance and management
Life.
Energy-storage system because with energy snubber, peak load shifting, take into account adjust sensitivity and output stability, be effectively reduced
The adjusting complexity of system, reduce the advantages that management service cost and be widely used in the production and living of people.By energy storage
Device induces one into cogeneration cooling heating system to be greatly improved the integral working of cool and thermal power system, reduces system
The operation expense of system, improves system adjustment flatness, increases the environmental suitability of system so that cold and hot electric system is especially small
The development of the cold and hot electric system of type is with promoting the advantage of having more.
Current energy-storage system is in particular for the energy-storage system of cogeneration cooling heating system, and form is often with simple storing up electricity
Or heat accumulation is scheme.Simple storing up electricity mode is sent out because being influenced be subject to current electric energy storage device whole volume is smaller, cost is higher
Exhibition is greatly limited, and no matter is used simple storing up electricity scheme or used heat accumulation scheme, is required for cool and thermal power
The energy supply subsystem energy supply power of co-generation system is adjusted in real time so that energy supply subsystem departs from specified operating status, closely and
So that the utilization rate of the energy supplying system energy significantly declines.Therefore, various informative, flexible adjustment energy storage scheme is for cool and thermal power
There will be huge practical value for co-generation system.
The content of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of mixed energy storage system and method based on cold and hot electric system.
The technical proposal of the invention is realized in this way：
A kind of mixed energy storage system based on cold and hot electric system, including PLC controller, host computer, unsteady flow wave filter, softening
Booster, power follower, soften electric storage means, bridge rectifier filter circuit, adopt control circuit and heat-storing device；
Cogeneration cooling heating system and the ac bus of user's AC load are become by switch, fuse, contactor and isolation
Depressor is connected to the alternating current filter, and the DC side cathode of the unsteady flow wave filter connects one end of the power follower,
The other end of the power follower connects the softening electric storage means by the first electromagnetic relay, at the same by the second electromagnetism after
Electric appliance connects the heat-storing device, and the output terminal of the softening electric storage means connects the softening with the output terminal of the heat-storing device
The low-pressure side storing up electricity branch cathode of booster, the control signal end of the digital output end connection contactor of the PLC controller, the
One electromagnetic relay, the second electromagnetic relay and the softening booster, the PLC controller digital input end connection described in
The voltage logic signal output part of control circuit is adopted, the analog input end of the PLC controller connects the softening by transmitter
The voltage acquisition signal end of electric storage means, the PLC controller connect the host computer, the softening booster by communication cable
Low-pressure side alternating current branch by the bridge rectifier filter circuit connect alternating current, it is described adopt control circuit pass through ac buck transformation
Device is connected to cogeneration cooling heating system and the ac bus of user's AC load, the control signal output for adopting control circuit with
Four IGBT grids of the unsteady flow wave filter are connected, and the heat-storing device connects absorption heat pump and absorption by heat exchanging water pipe
Formula refrigeration machine, absorption heat pump connection user's thermic load, Absorption Refrigerator connection user's refrigeration duty.
The host computer is equipped with communication module and monitoring module；
The communication module, for being communicated with PLC controller, and sends a control signal to PLC controller；
The monitoring module, for monitoring and showing operating parameter, system operating mode and statistics of each mode operation time
Amount；Section where the operating parameter, including ac bus voltage and the terminal voltage of softening electric storage means；The system Working mould
Formula, including be operated in ac bus and the pattern of storing up electricity, ac bus are carried out to softening electric storage means to the electric heat accumulation of heat-storing device progress
Pattern, softening electric storage means the pattern that the pattern of electric energy, alternating current provide electric energy to ac bus is provided ac bus.
The PLC controller is equipped with computing module and communication module；
The computing module, for carrying out calculation process to collection signal, obtains the output control signal of needs；
The communication module, for being communicated with host computer, is transmitted to host computer, while receive upper by operating parameter
Section where the control signal of machine, the operating parameter, including ac bus voltage and the terminal voltage of softening electric storage means.
The power follower includes integrated operational amplifier, the first proportion resistor, the second proportion resistor, the 3rd ratio electricity
Resistance, the 4th proportion resistor, flow control variable resistor and power transistor；
The negative input of the integrated operational amplifier passes through first proportion resistor and the alternating current filter
DC side cathode is connected, and the negative input and amplifier output terminal of the integrated operational amplifier are connected with the second proportion resistor,
The electrode input end of the integrated operational amplifier connects power follower reference voltage by the 3rd proportion resistor, described
The electrode input end of integrated operational amplifier is grounded by the 4th proportion resistor, and the amplifier of the integrated operational amplifier is defeated
Outlet connects the base stage of the power transistor by the flow control variable resistor, and the collector of the power transistor passes through institute
The cathode of the first electromagnetic relay connection softening electric storage means battery pack is stated, while is connected by second electromagnetic relay
The cathode of the heat-storing device heating wire, the DC side cathode phase of the emitter of the power transistor and the alternating current filter
Even.
It is described softening booster include afterflow inductance, the 5th IGBT, buffering capacitance, buffer inductance, first to control diode,
Second to control diode, three-dimensional control diode, the 3rd electromagnetic relay and the 4th electromagnetic relay；
One end of the afterflow inductance connects the collector of the 5th IGBT, the other end connection institute of the afterflow inductance
One end of the 3rd electromagnetic relay and one end of the 4th electromagnetic relay are stated, the other end of the 3rd electromagnetic relay connects
The described first anode to control diode is connect, the other end of the 4th electromagnetic relay connects described second to control diode
Anode, the 5th IGBT is in parallel with the buffering capacitance, and the emitter of the 5th IGBT connects the unsteady flow wave filter
DC side anode, the collector of the 5th IGBT are also connected with one end of the buffer inductance, the other end of the buffer inductance
The cathode of the three-dimensional control diode is connected, the anode of the three-dimensional control diode connects the direct current of the unsteady flow wave filter
Side cathode, the described first cathode connection cathode for softening lead accumulator group in electric storage means to control diode, described second
The bridge rectifier filter circuit DC side cathode, the grid of the 5th IGBT, the 3rd electricity are connected to the cathode of control diode
Magnetic relay and the 4th electromagnetic relay connect the digital output end of the PLC controller.
The control circuit of adopting includes adjustable grading voltage comparator, the 3rd operational amplifier, four-operational amplifier, the 5th
Electromagnetic relay and drive circuit；
The adjustable grading voltage comparator includes rectifier diode, stabilizing inducatnce, pressure measurement resistance, fly-wheel diode, the
One operational amplifier, the second operational amplifier, the first adjustable partial pressure capacitance, the second adjustable partial pressure capacitance and derided capacitors；
The cathode connection ac buck step down side firewire of the rectifier diode, the anode of the rectifier diode
The cathode of the stabilizing inducatnce is connected, the anode of the stabilizing inducatnce connects one end of the pressure measurement resistance, the pressure measurement resistance
Other end ground connection, the fly-wheel diode is in parallel with the series circuit of the stabilizing inducatnce and the pressure measurement resistance, described the
The electrode input end of the electrode input end of one operational amplifier and the second operational amplifier connects the stabilizing inducatnce and the survey
The tie point of piezoresistance, the cathode of the first adjustable partial pressure capacitance, which connects, adopts control circuit reference voltage, described first adjustable point
The anode of voltage capacitance connects the cathode of the second adjustable partial pressure capacitance, described in the cathode connection of the second adjustable partial pressure capacitance
The cathode of derided capacitors, the anode of the derided capacitors are grounded, described in the negative input connection of first operational amplifier
The cathode of second adjustable partial pressure capacitance, the negative input of second operational amplifier connect the cathode of the derided capacitors,
The amplifier output terminal of first operational amplifier connects PLC controller with the amplifier output terminal of second operational amplifier
Digital input end, the electrode input end of the 3rd operational amplifier are connected with the negative input of the four-operational amplifier
Ac buck step down side firewire, the negative input of the 3rd operational amplifier and the four-operational amplifier
Electrode input end is grounded, the amplifier output terminal of the 3rd operational amplifier and the amplifier output terminal difference of four-operational amplifier
It is connected by the 5th electromagnetic relay and the drive circuit with four IGBT grids of the unsteady flow wave filter.
Using the hybrid energy-storing method of the mixed energy storage system based on cold and hot electric system, comprise the following steps：
Step 1：Initialization system initiation parameter：Ac bus is set to carry out storing up electricity to softening electric storage means or fill heat accumulation
Put the voltage threshold for carrying out electric heat accumulation, softening electric storage means provides electric energy or alternating current to ac bus and provides electric energy to ac bus
Voltage threshold, power follower reference voltage level and adopt control circuit reference voltage value；
Step 2：The terminal voltage of flow control variable resistor is determined according to system initialization parameter, so as to obtain flow control variable resistor
Effective resistance, the capacitance of the first adjustable partial pressure capacitance and the electricity of the second adjustable partial pressure capacitance are determined according to system initialization parameter
Capacitance；
Step 3：Lead accumulator class upper limit threshold value and lower threshold in softening electric storage means are set by host computer；
Step 4：The make and break period T of 5th IGBT of setting softening booster circuit, the when determining to use the inversion of alternating current branch
Five IGBT turn-off times
Step 5：Disconnect each electromagnetic relay switch, the closure friendship with cogeneration cooling heating system and user's AC load
The switch that stream busbar is connected, PLC controller export closure signal to contactor, close contactor；
Step 6：The first operational amplifier of control circuit and the logical output values of the second operational amplifier are adopted, collection is soft
Change the voltage of lead accumulator group in electric storage means, section where the voltage that PLC passes through logic judgment ac bus, to softening electric storage means
It is controlled with the storage energy pattern of heat-storing device；
Step 6.1：Adopt the first operational amplifier of control circuit and the logical output values of the second operational amplifier, collection
Soften the voltage of lead accumulator group in electric storage means；
Step 6.2：Whether the logical output values for judging to adopt the first operational amplifier of control circuit are high, if so, performing step
Rapid 6.3, otherwise, perform step 6.4；
Step 6.3：The 5th electromagnetic relay for adopting control circuit is disconnected, performs step 7；
Step 6.4：Whether the logical output values for judging to adopt the second operational amplifier of control circuit are high, if so, performing step
Rapid 6.5, otherwise, perform step 6.10；
Step 6.5：Whether the voltage for judging to soften lead accumulator group in electric storage means is less than its lower threshold, if so, performing
Step 6.6, otherwise, step 6.8 is performed；
Step 6.6：4th electromagnetic relay of closure softening booster, disconnects the 3rd electromagnetism relay of softening booster
Device；
Step 6.7：According to the make and break period T of the 5th IGBT of the softening booster circuit of setting and using during mains-supplied the
Five IGBT turn-off timesBreak-make control is carried out to the 5th IGBT for softening booster, performs step 7；
Step 6.8：Disconnect the 4th electromagnetic relay of softening booster, the 3rd electromagnetism relay of closure softening booster
Device；
Step 6.9：Stored according to lead in the make and break period T and softening electric storage means of the 5th IGBT of the softening booster circuit of setting
The voltage of battery pack softens the turn-off time of the 5th IGBT of booster when calculating using softening electric storage means power supplySoftening is risen
5th IGBT of depressor carries out break-make control, performs step 7；
Step 6.10：Closure adopts the 5th electromagnetic relay of control circuit；
Step 7：The voltage of lead accumulator group, PLC soften electric storage means lead accumulator by judging in collection softening electric storage means
The storing up electricity situation of group, controls the first electromagnetic relay and the second electromagnetic relay, realize to heat-storing device and softening electric storage means into
Row energy storage controls；
Step 7.1：The voltage of lead accumulator group, judges lead electric power storage in the softening electric storage means of collection in collection softening electric storage means
Whether the voltage of pond group is higher than its upper limit threshold, if so, then performing step 7.2, otherwise, performs step 7.3；
Step 7.2：The first electromagnetic relay is disconnected, closes the second electromagnetic relay, the power transistor of power follower
On-off line operation is carried out according to ac bus voltage effective value size, the heat accumulation control to heat-storing device is realized, performs step 8；
Step 7.3：The first electromagnetic relay is closed, disconnects the second electromagnetic relay, the power transistor of power follower
On-off line operation is carried out according to ac bus voltage effective value size, realizes and the storing up electricity for softening electric storage means is controlled；
Step 8：Judge whether contactless contactor turns off, if so, then system work terminates, otherwise, return to step 6.
Beneficial effects of the present invention：
The present invention proposes a kind of mixed energy storage system and method based on cold and hot electric system, and the present invention is applied widely, can
With according to different capacity demand, different hot and cold, electricity demanding environment, freely adjust the watt level of storing up electricity heat accumulation, can be in reality
Cost is reduced on the premise of existing energy adjustment.The present invention can carry out the energy of cold and hot electric system safely and effectively automatic adjust
Section, maintain cold and hot electrical system power subsystem be in rated power it is constant in the case of, according to the change of the cold and hot electricity demanding of user
Change, not only ensure that the electric energy for reducing high-quality to the greatest extent is converted to low-quality thermal energy, but also prevent largely using the higher storing up electricity of cost
Device, finds equalization point between economy and efficiency, enables to hot and cold, the electric distribution of cold and hot electric system more convenient so that cold
The popularization and application of heat and power system have more actuality.
Brief description of the drawings
Fig. 1 is the structure diagram of the mixed energy storage system based on cold and hot electric system in the specific embodiment of the invention；
Fig. 2 is the integrated circuit figure of the mixed energy storage system based on cold and hot electric system in the specific embodiment of the invention；
Wherein, 1- alternating current filters, 2- softening boosters, 3- power followers, 4- softening electric storage means, the filter of 5- bridge rectifiers
Wave circuit, 6- adopt control circuit, 7- heat storage box, 8- ac buck transformers, 9- isolating transformers, 10- contactors, 11- fuses,
12- is switched, the first electromagnetic relays of 13-, the second electromagnetic relays of 14-；
Fig. 3 is the circuit diagram of unsteady flow wave filter in the specific embodiment of the invention；
Fig. 4 is the circuit diagram of power follower in the specific embodiment of the invention；
Fig. 5 is the circuit diagram for softening electric storage means in the specific embodiment of the invention；
Fig. 6 is the circuit diagram for softening booster in the specific embodiment of the invention；
Fig. 7 is the circuit diagram of bridge rectifier filter circuit in the specific embodiment of the invention；
Fig. 8 is the circuit diagram that control circuit is adopted in the specific embodiment of the invention；
Wherein, 6.1- adjustable gradings voltage comparator；
Fig. 9 is the flow chart of the hybrid energy-storing method based on cold and hot electric system in the specific embodiment of the invention；
Figure 10 is PLC in the specific embodiment of the invention by judging the voltage place section of ac bus to softening electric power storage
The flow chart that the storage energy pattern of device and heat storage box is controlled；
Figure 11 is that PLC is real by the storing up electricity situation for judging softening electric storage means lead accumulator group in the specific embodiment of the invention
The flow chart of energy storage control is now carried out to heat storage box and softening electric storage means.
Embodiment
The specific embodiment of the invention is described in detail below in conjunction with the accompanying drawings.
The present invention proposes a kind of mixed energy storage system based on cold and hot electric system, in present embodiment, concrete application Mr. Yu
The mixed energy storage system of the miniature cogeneration cooling heating system of unit building, PLC controller select Siemens 315-2DP, soften electric power storage
The lead accumulator group storage battery of device 4 selects the electric power network that Songyuan City SY7-12 lead accumulator × 10 × 5 form (i.e. to lead accumulator
Implement connection in series-parallel combination), heat-storing device use heat storage box 7 of the heat storage brick as heat accumulating, internal cloth be placed with electric heating wire with
Heat exchanging water pipe, connects absorption heat pump and Absorption Refrigerator, absorption heat pump connection user's thermic load, inhales by heat exchanging water pipe
Receipts formula refrigeration machine connects user's refrigeration duty.
Based on the mixed energy storage system of cold and hot electric system, as depicted in figs. 1 and 2, including PLC controller, host computer, unsteady flow
Wave filter 1, soften booster 2, power follower 3, soften electric storage means 4, bridge rectifier filter circuit 5, adopt control circuit 6 and heat accumulation
Case 7.
The ac bus of miniature cogeneration cooling heating system (CCHP) and user's AC load by switch 12, fuse 11,
Contactor 10 and isolating transformer 9 are connected to shown unsteady flow wave filter 1, the DC side cathode of unsteady flow wave filter 1 connection power with
With one end of device 3, the other end of power follower 3 connects softening electric storage means 4 by the first electromagnetic relay 13, while passes through the
Two electromagnetic relays 14 connect heat storage box 7, and the output terminal of softening electric storage means 4 connects softening booster 2 with the output terminal of heat storage box 7
Low-pressure side storing up electricity branch cathode, the digital output end connection control signal end of contactor 10 of PLC controller, the first electromagnetism after
The voltage of control circuit 6 is adopted in electric appliance 13, the second electromagnetic relay 14 and softening booster 4, the digital input end connection of PLC controller
Logical signal output terminal, the analog input end of PLC controller connect the voltage acquisition letter of the softening electric storage means 4 by transmitter
Number end, PLC controller by communication cable connect host computer, softening booster 2 low-pressure side alternating current branch pass through bridge rectifier
Filter circuit 5 connects alternating current, adopt control circuit 6 and cogeneration cooling heating system is connected to by ac buck transformer 8 is exchanged with user
The ac bus of load, the control signal output for adopting control circuit 6 are connected with four IGBT grids of unsteady flow wave filter 1, heat accumulation
Case 7 connects absorption heat pump and Absorption Refrigerator, absorption heat pump connection user's thermic load, absorption system by heat exchanging water pipe
Cold connects user's refrigeration duty.
In present embodiment, the alternating current that specified ac bus voltage is 220V-50Hz is chosen, sets minisize thermoelectric coproduction
The rated generation power of system is constant, the fluctuation that can cause ac bus voltage with electric loading real-time change of user, the present invention
Mixed energy storage system is used to adjust for ac bus voltage.
In present embodiment, host computer is equipped with communication module and monitoring module.Communication module, for PLC controller into
Row communication, and send a control signal to PLC controller.Monitoring module, for monitoring and showing operating parameter, system operating mode
And each mode operation time statistic.
Section where operating parameter, including ac bus voltage and the terminal voltage of softening electric storage means.
System operating mode, including be operated in ac bus and the pattern of storing up electricity, ac bus pair are carried out to softening electric storage means
Heat-storing device carries out the pattern of electric heat accumulation, softening electric storage means provides the pattern of electric energy to ac bus, alternating current is carried to ac bus
For the pattern of electric energy.
In present embodiment, computing module and communication module are equipped with PLC controller：Wherein, computing module is to input
Collection signal in PLC controller carries out calculation process to obtain the control signal of needs, communication module be responsible for host computer into
System operational parameters are transferred to host computer for ipc monitor and receive the control signal of host computer by row communication.Operating parameter
Including：Section where ac bus voltage and the terminal voltage of softening electric storage means.
In present embodiment, unsteady flow wave filter 1 as shown in figure 3, including the first IGBT VT1.1, the 2nd IGBT VT1.2,
3rd IGBT VT1.3, the 4th IGBT VT1.4, the first diode VD1.1, the second diode VD1.2, the 3rd diode
VD1.3, the 4th diode VD1.4 and filtering capacitance of voltage regulation C1.
First IGBT VT1.1 are electrically connected with the 2nd IGBT VT1.2 using collection altogether, the 3rd IGBT VT1.3 and the 4th IGBT
VT1.4 is connected using common emitter, and the emitter of the first IGBT VT1.1 is connected with the collector of the 3rd IGBT VT1.3, and second
The emitter of IGBT VT1.2 is connected with the collector of the 4th IGBT VT1.4, the first diode VD1.1 and the first IGBT
VT1.1 reverse parallel connections, the second diode VD1.2 and the 2nd IGBT VT1.2 reverse parallel connections, the 3rd diode VD1.3 and the 3rd
IGBTVT1.3 reverse parallel connections, the 4th diode VD1.4 and the 4th IGBTVT1.4 reverse parallel connections, bridge circuit exchange side are connected with
T-shaped filter circuit, DC side are connected with filtering capacitance of voltage regulation C1, DC side and the electric power in power follower 3 of unsteady flow wave filter 1
Emitter, the anode of integrated operational amplifier A2.1 of transistor T2.1 is connected.First IGBT VT1.1's of unsteady flow wave filter 1
Grid control terminal, the grid control terminal of the 2nd IGBT VT1.2, the grid control terminal and the 4th IGBT of the 3rd IGBT VT1.3
The grid control terminal of VT1.4 passes through drive circuit and the 5th electromagnetic relay K6.1 with adopting the control signal output of control circuit 6
It is connected.
In present embodiment, power follower 3 is as shown in figure 4, including integrated operational amplifier A2.1, the first proportion resistor
R2.1, the second proportion resistor R2.2, the 3rd proportion resistor R2.3, the 4th proportion resistor R2.4, flow control variable resistor R2.5 and electricity
Power transistor T2.1.
The negative input of integrated operational amplifier A2.1 passes through the first proportion resistor R2.1 and the direct current of alternating current filter 1
Side cathode is connected, and the negative input and amplifier output terminal of integrated operational amplifier A2.1 are connected with the second proportion resistor R2.2,
The electrode input end of integrated operational amplifier A2.1 by the 3rd proportion resistor R2.3 connection power follower reference voltage V2.1,
The electrode input end of integrated operational amplifier A2.1 is grounded by the 4th proportion resistor R2.4, the fortune of integrated operational amplifier A2.1
Base stage of the output terminal by flow control variable resistor R2.5 connection power transistors T2.1 is put, the collector of power transistor T2.1 leads to
The cathode of the first electromagnetic relay 13K3.1 connections softening 4 battery pack of electric storage means is crossed, while is connected by the second electromagnetic relay 14
The cathode of 7 heating wire of heat storage box is connect, the emitter of power transistor T2.1 is connected with the DC side cathode of alternating current filter 1.
In present embodiment, resistance value of the resistance value equal to the 3rd proportion resistor R2.3 of the first proportion resistor R2.1 is
Resistance value of the resistance value of 100 Ω, the second proportion resistor R2.2 equal to the 4th proportion resistor R2.4 is 600 Ω.
In present embodiment, the both end voltage value U of flow control variable resistor R2.5R2.5Calculation formula such as formula (1) shown in：
Wherein, UiFor power transistor T2.1 emitter voltages, UEBQFor power transistor T2.1 emitters to base voltage
Pressure drop, V2.1 are power follower reference voltage.
The collector output current I of power transistor T2.1oCalculation formula such as formula (2) shown in：
Wherein, β is the current amplification factor of power transistor T2.1.
WhenWhen, power transistor T2.1 emitters are not turned on collector, without
Rectification electric power storage or rectified current heat accumulation；
WhenWhen, power transistor T2.1 emitters are turned on collector, carry out rectification
Electric power storage or rectified current heat accumulation.
In present embodiment, softening electric storage means 4 is as shown in figure 5,5 batteries discharge into row parallel connection, and each battery row is by 10
Lead accumulator is connected, and forms 10 × 5 lead accumulator group, then the rated voltage of lead accumulator group is at this time：12V × 10=
120V.The cathode of lead accumulator group passes through power transistor T2.1 in the first electromagnetic relay 13K3.1 and power follower 3
Collector is connected, and the anode of lead accumulator group is connected by inductance L3.1 with the DC side anode of unsteady flow wave filter 1, inductance L3.1
Current output terminal be connected with the cathode of diode VD3.1, the anode of diode VD3.1 is connected with the cathode of lead accumulator group.
When connecting first electromagnetic relay 13K3.1 closure of the unsteady flow wave filter 1 with softening electric storage means 4, inductance L3.1, which can slow down, to be flowed through
The mutation of the electric current of lead accumulator group, protects lead accumulator group and other original papers；When the moment that rectification circuit disconnects, electricity
Injection lead accumulator group can be buffered by diode VD3.1 by feeling the electric current in L3.1, reduce the waste of energy.Lead accumulator at the same time
Cathode phase of the cathode of group also with first in the storing up electricity branch for the low-pressure side cathode for softening booster 2 to control diode VD4.1
Even.
In present embodiment, softening booster 2 is as shown in fig. 6, including afterflow inductance L4.1, the 5th IGBTVT4.1, buffering
Capacitance Cr, buffer inductance Lr, first to control diode VD4.1, second to control diode VD4.2, three-dimensional control diode
VD4.3, the 3rd electromagnetic relay K4.1 and the 4th electromagnetic relay K4.2.
One end of afterflow inductance L4.1 connects the collector of the 5th IGBT VT4.1, the other end connection of afterflow inductance L4.1
One end of 3rd electromagnetic relay K4.1 and one end of the 4th electromagnetic relay K4.2, the other end of the 3rd electromagnetic relay K4.1
Connection first connects second to control diode to the anode for controlling diode VD4.1, the other end of the 4th electromagnetic relay K4.2
The anode of VD4.2, the 5th IGBT VT4.1 are in parallel with buffering capacitance Cr, the emitter connection unsteady flow filtering of the 5th IGBT VT4.1
The anode of the filtering capacitance of voltage regulation C1 of device 1, the collector of the 5th IGBT VT4.1 are also connected with one end of buffer inductance Lr, buffering electricity
Feel the cathode of the other end connection three-dimensional control diode VD4.3 of Lr, the anode connection unsteady flow filter of three-dimensional control diode VD4.3
The cathode of the filtering capacitance of voltage regulation C1 of ripple device 1, the first lead electric power storage into the cathode connection softening electric storage means 4 of control diode VD4.1
The cathode of pond group, second connects 5 DC side cathode of bridge rectifier filter circuit, the 5th IGBT to the cathode of control diode VD4.2
The digital output end of the grid of VT4.1, the 3rd electromagnetic relay K4.1 and the 4th electromagnetic relay K4.2 connection PLC controllers.
In present embodiment, when carrying out inverter operation, when the moment of the 5th IGBT VT4.1 conductings, due to buffer inductance
The afterflow effect of Lr, which can slow down, to be flowed through the electric current of the 5th IGBT VT4.1 and gathers way；When the wink of the 5th IGBT VT4.1 shut-offs
Between, due to buffering the presence of capacitance Cr, gathering way for the 5th IGBTVT4.1 terminal voltages can be slowed down.Buffer inductance Lr and buffering
Capacitance Cr exists and the 5th IGBT VT4.1 can be protected.
In present embodiment, bridge rectifier filter circuit 5 by four diodes as shown in fig. 7, form bridge rectifier filtering
Circuit, exchange side and the city of bridge rectifier filter circuit 5 are electrically connected, and the DC output side of bridge rectifier filter circuit 5 passes through LC
Circuit is filtered.The in the low-pressure side cathode alternating current branch of the outlet side connection softening booster 2 of bridge rectifier filter circuit 5
Two to control diode VD4.2 cathode.
In present embodiment, control circuit 6 is adopted as shown in figure 8, being put including adjustable grading voltage comparator 6.1, the 3rd computing
Big device A6.3, four-operational amplifier A6.4, the 5th electromagnetic relay K6.1 and drive circuit.
Adjustable grading voltage comparator 6.1 includes rectifier diode VD6.1, stabilizing inducatnce L6.1, pressure measurement resistance R6.1, continuous
Flow diode VD6.2, the first operational amplifier A 6.1, the second operational amplifier A 6.2, the first adjustable partial pressure capacitance C6.1, second
Adjustable partial pressure capacitance C6.2 and derided capacitors C6.3.
Control circuit 6 is adopted by the ac buck transformer 8 that no-load voltage ratio is K with ac bus to be connected, rectifier diode VD6.1's
8 low-pressure side firewire of cathode connection ac buck transformer, the anode connection stabilizing inducatnce L6.1 of rectifier diode VD6.1 is just
Pole, one end of the anode connection pressure measurement resistance R6.1 of stabilizing inducatnce L6.1, the other end ground connection of pressure measurement resistance R6.1, two pole of afterflow
Pipe VD6.2 is in parallel with the series circuit of stabilizing inducatnce L6.1 and pressure measurement resistance R6.1, and the cathode of the first operational amplifier A 6.1 is defeated
Enter the tie point that end connects stabilizing inducatnce L6.1 and pressure measurement resistance R6.1 with the electrode input end of the second operational amplifier A 6.2, the
The anode that control circuit reference voltage V6.1, the first adjustable partial pressure capacitance C6.1 are adopted in the cathode connection of one adjustable partial pressure capacitance C6.1 connects
The cathode of the second adjustable partial pressure capacitance C6.2 is connect, the cathode connection derided capacitors C6.3 of the second adjustable partial pressure capacitance C6.2 is just
Pole, the anode ground connection of derided capacitors C6.3, the negative input of the first operational amplifier A 6.1 connect the second adjustable partial pressure capacitance
The cathode of C6.2, the cathode of the negative input connection derided capacitors C6.3 of the second operational amplifier A 6.2, the first operation amplifier
The digital input end of the amplifier output terminal of device A6.1 and the amplifier output terminal of the second operational amplifier A 6.2 connection PLC controller,
The electrode input end of 3rd operational amplifier A 6.3 and the negative input connection ac buck of four-operational amplifier A6.4 become
8 low-pressure side firewire of depressor, the cathode input of the negative input and four-operational amplifier A6.4 of the 3rd operational amplifier A 6.3
End ground connection, the amplifier output terminal of the 3rd operational amplifier A 6.3 and the amplifier output terminal of four-operational amplifier A6.4 pass through respectively
Grid, the 2nd IGBT of 5th electromagnetic relay K6.1 and drive circuit and the first IGBT VT1.1 of unsteady flow wave filter 1
The grid of the grid of VT1.2, the grid of the 3rd IGBTVT1.3 and the 4th IGBTVT1.4 is connected.
In present embodiment, when the 5th electromagnetic relay K6.1 is closed, when ac bus voltage is timing, the 3rd computing is put
Big device A6.3 output logic highs, four-operational amplifier A6.4 outputs are logic low；
When ac bus voltage is bears, four-operational amplifier A6.4 output logic highs, the 3rd operational amplifier
A6.3 outputs are logic low.
In present embodiment, the inductance value of stabilizing inducatnce L6.1 is sufficiently large, can regard the electric current for flowing through pressure measurement resistance R6.1 as
Directly proportional to ac bus voltage, i.e. the voltage drop of pressure measurement resistance R6.1 is directly proportional to ac bus voltage.
In present embodiment, to prevent mixed energy storage system from carrying out frequent mode switching, setting exchange at critical condition
Busbar carries out softening electric storage means storing up electricity or is U to the voltage threshold of the electric heat accumulation of heat storage box progressS, setting softening electric storage means pair
It is U that ac bus, which provides the voltage threshold that electric energy or alternating current provide electric energy to ac bus,F, it is known that ac bus rated voltage
For UN。
When it is too small due to user's AC load and cause ac bus voltage effective value U be higher than USWhen, carry out softening storage
Electric appliance storing up electricity or heat storage box electricity heat accumulation.
When the voltage effective value U of ac bus is less than UFWhen, or the voltage effective value U of ac bus is more than UFAnd it is less than
UNAnd the 5th electromagnetic relay K6.1 closure when, mixed energy storage system by soften electric storage means to ac bus provide electric energy or
Alternating current provides electric energy to ac bus.
When the voltage effective value U of ac bus is more than UFLess than UNAnd during the 5th electromagnetic relay K6.1 disconnections, or exchange
The voltage effective value U of busbar is more than UNLess than USWhen, mixed energy storage system is not involved in the energy adjustment of ac bus.
The anode input voltage U of first operational amplifier A 6.1ACalculation formula such as formula (3) shown in：
The anode input voltage U of second operational amplifier A 6.2BCalculation formula such as formula (4) shown in：
The cathode input voltage U of first operational amplifier A 6.1 and the second operational amplifier A 6.2DCalculation formula such as formula
(5) shown in：
Wherein, U is ac bus voltage effective value.
Shown in the calculation formula such as formula (6) of the capacitance C6.2 of second adjustable partial pressure capacitance C6.2：
Wherein, C6.3 is the capacitance of derided capacitors C6.3.
Shown in the calculation formula such as formula (7) of the capacitance C6.1 of first adjustable partial pressure capacitance C6.1：
Wherein, V6.1 controls circuit reference voltage value to adopt.
Using the hybrid energy-storing method of the mixed energy storage system based on cold and hot electric system, as shown in figure 9, including following step
Suddenly：
Step 1：Initialization system initiation parameter：Set ac bus and storing up electricity is carried out or to heat storage box to softening electric storage means
Carry out the voltage threshold of electric heat accumulation, softening electric storage means provides electric energy or alternating current to ac bus and provides electric energy to ac bus
Voltage threshold, power follower reference voltage level and adopt control circuit reference voltage value.
In present embodiment, ac buck transformer voltage ratio K=10, the ac bus of setting stores up softening electric storage means
Electricity or the voltage threshold that electric heat accumulation is carried out to heat storage box are US=230V, the softening electric storage means of setting provide electricity to ac bus
The voltage threshold that energy or alternating current provide electric energy to ac bus is UF=210V, it is known that the rated voltage U of ac busN=
220V, for the power follower reference voltage set as V2.1=240V, what is set adopts control circuit reference voltage as V6.1=10V.
Step 2：The terminal voltage of flow control variable resistor is determined according to system initialization parameter, so as to obtain flow control variable resistor
Effective resistance, the capacitance of the first adjustable partial pressure capacitance and the electricity of the second adjustable partial pressure capacitance are determined according to system initialization parameter
Capacitance.
In present embodiment, the power transistor emitter voltage U of power followeri=0.9U, the electricity of power follower
Power emitter is to base voltage pressure drop UEBQ=7V, the resistance value R2.1=100 Ω of the first proportion resistor, the second ratio
The resistance value R2.2=600 Ω of resistance, set power follower reference voltage V2.1=240V, and flow control can be obtained by substituting into formula (1)
The both end voltage value U of variable resistorR2.5As shown in formula (8)：
In present embodiment, current amplification factor β=25 of power transistor, the resistance value R2.5=of flow control variable resistor
The collector output current I of 50 Ω, then power transistoroAs shown in formula (9)：
System meets that ac bus voltage effective value often increases 1V, and output current increase about 3A (can by adjusting flow control
The value for becoming resistance R2.5 is adjusted gathering way for electric current).
In present embodiment, the derided capacitors C6.3=945pF of control circuit is adopted, the reference voltage V6.1 of control circuit is adopted in setting
=10V, from formula (3), (4), the anode input voltage U of the first operational amplifierA=9.9V, the second operational amplifier
Anode input voltage UB=9.45V.
From formula (5), the cathode input voltage U of the first operational amplifier and the second operational amplifierD=0.045U.
From formula (6), (7), the capacitance of the first adjustable partial pressure capacitance is C6.1=10pF, and the second adjustable partial pressure is electric
The capacitance of appearance is C6.2=45pF.
In system operation：
Work as UD＞ UAWhen, the first operational amplifier and the second operational amplifier export logic high；
Work as UB＜ UD＜ UAWhen, the first operational amplifier output logic low, the second operational amplifier exports logically high electricity
It is flat；
Work as UD＜ UBWhen, the first operational amplifier and the second operational amplifier export logic low.
Step 3：Lead accumulator class upper limit threshold value and lower threshold in softening electric storage means are set by host computer.
In present embodiment, by host computer set softening electric storage means in lead accumulator class upper limit threshold value as 120V, lower limit
Threshold value is 85V.
Step 4：The make and break period T of 5th IGBT of setting softening booster circuit, the when determining to use the inversion of alternating current branch
Five IGBT turn-off times
In present embodiment, the make and break period T=0.02s of the 5th IGBT of the softening booster circuit of setting, using alternating current
5th IGBT turn-off times during branch's inversionCalculation formula such as formula (10) shown in：
Wherein, Ui2=198V is DC voltage of the alternating current after bridge rectifier filter circuit converts, Uo=225V is softening
Booster circuit high-pressure side exports target voltage, the 5th IGBT turn-off times when obtaining using the inversion of alternating current branch
Step 5：Disconnect each electromagnetic relay switch, close and exchange mother with cogeneration cooling heating system and user's AC load
The switch that line is connected, PLC controller export closure signal to contactor, close contactor.
In present embodiment, the first electromagnetic relay to the 5th electromagnetic relay, closure and cogeneration cooling heating system are disconnected
The switch being connected with the ac bus of user's AC load, PLC controller export contactor closure signal, closure contact
Device.
Step 6：The first operational amplifier of control circuit and the logical output values of the second operational amplifier are adopted, collection is soft
Change the voltage of lead accumulator group in electric storage means, section where voltages of the PLC by judging ac bus, to softening electric storage means and storage
The storage energy pattern of hot tank is controlled, as shown in Figure 10.
Step 6.1：Adopt the first operational amplifier of control circuit and the logical output values of the second operational amplifier, collection
Soften the voltage of lead accumulator group in electric storage means.
Step 6.2：Whether the logical output values for judging to adopt the first operational amplifier of control circuit are high, if so, performing step
Rapid 6.3, otherwise, perform step 6.4.
Step 6.3：The 5th electromagnetic relay for adopting control circuit is disconnected, performs step 7.
Step 6.4：Whether the logical output values for judging to adopt the second operational amplifier of control circuit are high, if so, performing step
Rapid 6.5, otherwise, perform step 6.10.
Step 6.5：Whether the voltage for judging to soften lead accumulator group in electric storage means is less than its lower threshold, if so, performing
Step 6.6, otherwise, step 6.8 is performed.
Step 6.6：4th electromagnetic relay of closure softening booster, disconnects the 3rd electromagnetism relay of softening booster
Device.
Step 6.7：According to the make and break period T of the 5th IGBT of the softening booster circuit of setting and using during mains-supplied the
Five IGBT turn-off timesBreak-make control is carried out to the 5th IGBT for softening booster, performs step 7.
Step 6.8：Disconnect the 4th electromagnetic relay of softening booster, the 3rd electromagnetism relay of closure softening booster
Device.
Step 6.9：Stored according to lead in the make and break period T and softening electric storage means of the 5th IGBT of the softening booster circuit of setting
The voltage of battery pack softens the turn-off time of the 5th IGBT of booster when calculating using softening electric storage means power supplySoftening is risen
5th IGBT of depressor carries out break-make control, performs step 7.
In present embodiment, soften the turn-off time of the 5th IGBT of booster when calculating using softening electric storage means power supply
Calculation formula such as formula (11) shown in：
Wherein, Ui1For the DC voltage of low-pressure side lead accumulator output, soften booster when powering using softening electric storage means
The scope of turn-off time of the 5th IGBT be 0.008-0.010s, change with the terminal voltage of lead accumulator group.
Step 6.10：Closure adopts the 5th electromagnetic relay of control circuit.
In present embodiment, if the 4th electromagnetic relay for softening booster at this time disconnects, soften the 3rd electricity of booster
Magnetic relay closes, then lead accumulator group exchanges electric load to user by inversion and feeds；If soften booster at this time
4th electromagnetic relay closes, and the 3rd electromagnetic relay for softening booster disconnects, then alternating current is rectified filtered by inverse
Become and user's exchange electric load is fed.
Step 7：The voltage of lead accumulator group, PLC soften electric storage means lead accumulator by judging in collection softening electric storage means
The storing up electricity situation of group, controls the first electromagnetic relay and the second electromagnetic relay, realizes and heat storage box and softening electric storage means are carried out
Energy storage controls, as shown in figure 11.
Step 7.1：The voltage of lead accumulator group, judges lead electric power storage in the softening electric storage means of collection in collection softening electric storage means
Whether the voltage of pond group is higher than its upper limit threshold 120V, if so, then performing step 7.2, otherwise, performs step 7.3.
Step 7.2：The first electromagnetic relay is disconnected, closes the second electromagnetic relay, the power transistor of power follower
On-off line operation is carried out according to ac bus voltage effective value size, the heat accumulation control to heat storage box is realized, performs step 8.
When ac bus voltage effective value no more than ac bus to softening electric storage means carry out storing up electricity or to heat storage box into
The voltage threshold U of row electricity heat accumulationSDuring=230V, emitter and the collector of the power transistor of power follower are not turned on, no
Carry out rectified current heat accumulation.
Storing up electricity is carried out or to heat storage box progress to softening electric storage means when ac bus voltage effective value is more than ac bus
The voltage threshold U of electric heat accumulationSDuring=230V, the emitter of the power transistor of power follower is turned on collector, to heat accumulation
Case electric heating wire is powered, and carries out rectified current heat accumulation.
Step 7.3：The first electromagnetic relay is closed, disconnects the second electromagnetic relay, the power transistor of power follower
On-off line operation is carried out according to ac bus voltage effective value size, realizes and the storing up electricity for softening electric storage means is controlled.
In present embodiment, when ac bus voltage effective value no more than ac bus to softening electric storage means carry out storing up electricity or
Person carries out heat storage box the voltage threshold U of electric heat accumulationSDuring=230V, the emitter and current collection of the power transistor of power follower
Pole is not turned on, without rectification storing up electricity.
Storing up electricity is carried out or to heat storage box progress to softening electric storage means when ac bus voltage effective value is more than ac bus
The voltage threshold U of electric heat accumulationSDuring=230V, the emitter of the power transistor of power follower is turned on collector, to softening
The lead accumulator group of electric storage means is powered, and carries out storing up electricity.
Step 8：Judge whether contactless contactor turns off, if so, then system work terminates, otherwise, return to step 6.
Claims (5)
1. a kind of mixed energy storage system based on cold and hot electric system, it is characterised in that including PLC controller, host computer, unsteady flow filter
Ripple device, soften booster, power follower, soften electric storage means, bridge rectifier filter circuit, adopt control circuit and heat-storing device；
Cogeneration cooling heating system and the ac bus of user's AC load pass through switch, fuse, contactor and isolating transformer
The alternating current filter is connected to, the DC side cathode of the unsteady flow wave filter connects one end of the power follower, described
The other end of power follower connects the softening electric storage means by the first electromagnetic relay, while passes through the second electromagnetic relay
The heat-storing device is connected, the output terminal of the softening electric storage means connects the softening boosting with the output terminal of the heat-storing device
The low-pressure side storing up electricity branch cathode of device, the control signal end of the digital output end connection contactor of the PLC controller, the first electricity
Magnetic relay, the second electromagnetic relay and the softening booster, the PLC controller digital input end connection described in adopt control
The voltage logic signal output part of circuit, the analog input end of the PLC controller connect the softening electric power storage by transmitter
The voltage acquisition signal end of device, the PLC controller connects the host computer by communication cable, described to soften the low of booster
Ya Ce alternating currents branch connects alternating current by the bridge rectifier filter circuit, and the control circuit of adopting is connected by ac buck transformer
Be connected to cogeneration cooling heating system and the ac bus of user's AC load, the control signal output for adopting control circuit with it is described
Four IGBT grids of unsteady flow wave filter are connected, and the heat-storing device connects absorption heat pump and absorption system by heat exchanging water pipe
Cold, absorption heat pump connection user's thermic load, Absorption Refrigerator connection user's refrigeration duty.
2. the mixed energy storage system according to claim 1 based on cold and hot electric system, it is characterised in that the host computer is set
There are communication module and monitoring module；
The communication module, for being communicated with PLC controller, and sends a control signal to PLC controller；
The monitoring module, for monitoring and showing operating parameter, system operating mode and each mode operation time statistic；Institute
Section where stating operating parameter, including ac bus voltage and the terminal voltage of softening electric storage means；The system operating mode, including
Be operated in ac bus softening electric storage means is carried out the pattern of storing up electricity, ac bus heat-storing device is carried out electric heat accumulation pattern,
Soften electric storage means and the pattern that the pattern of electric energy, alternating current provide electric energy to ac bus is provided ac bus.
3. the mixed energy storage system according to claim 1 based on cold and hot electric system, it is characterised in that the PLC controls
Device is equipped with computing module and communication module；
The computing module, for carrying out calculation process to collection signal, obtains the output control signal of needs；
The communication module, for being communicated with host computer, is transmitted to host computer, while receive host computer by operating parameter
Section where control signal, the operating parameter, including ac bus voltage and the terminal voltage of softening electric storage means.
4. the mixed energy storage system according to claim 1 based on cold and hot electric system, it is characterised in that the power follows
Device includes integrated operational amplifier, the first proportion resistor, the second proportion resistor, the 3rd proportion resistor, the 4th proportion resistor, flow control
Variable resistor and power transistor；
The negative input of the integrated operational amplifier passes through first proportion resistor and the direct current of the alternating current filter
Side cathode is connected, and the negative input and amplifier output terminal of the integrated operational amplifier are connected with the second proportion resistor, described
The electrode input end of integrated operational amplifier connects power follower reference voltage by the 3rd proportion resistor, described integrated
The electrode input end of operational amplifier is grounded by the 4th proportion resistor, the amplifier output terminal of the integrated operational amplifier
Connect the base stage of the power transistor by the flow control variable resistor, the collector of the power transistor passes through described the
The cathode of the one electromagnetic relay connection softening electric storage means battery pack, while by described in second electromagnetic relay connection
The cathode of heat-storing device heating wire, the emitter of the power transistor are connected with the DC side cathode of the alternating current filter；
It is described softening booster include afterflow inductance, the 5th IGBT, buffering capacitance, buffer inductance, first to control diode, second
To control diode, three-dimensional control diode, the 3rd electromagnetic relay and the 4th electromagnetic relay；
One end of the afterflow inductance connects the collector of the 5th IGBT, the other end connection of the afterflow inductance described the
One end of three electromagnetic relays and one end of the 4th electromagnetic relay, the other end connection institute of the 3rd electromagnetic relay
The first anode to control diode is stated, the other end of the 4th electromagnetic relay connects described second to the negative of control diode
Pole, the 5th IGBT is in parallel with the buffering capacitance, and the emitter of the 5th IGBT connects the straight of the unsteady flow wave filter
Side anode is flowed, the collector of the 5th IGBT is also connected with one end of the buffer inductance, and the other end of the buffer inductance connects
The cathode of the three-dimensional control diode is connect, the anode of the three-dimensional control diode connects the DC side of the unsteady flow wave filter
Cathode, described first to control diode cathode connection it is described softening electric storage means in lead accumulator group cathode, described second to
The cathode for controlling diode connects the bridge rectifier filter circuit DC side cathode, grid, the 3rd electromagnetism of the 5th IGBT
Relay and the 4th electromagnetic relay connect the digital output end of the PLC controller；
The control circuit of adopting includes adjustable grading voltage comparator, the 3rd operational amplifier, four-operational amplifier, the 5th electromagnetism
Relay and drive circuit；
The adjustable grading voltage comparator includes rectifier diode, stabilizing inducatnce, pressure measurement resistance, fly-wheel diode, the first fortune
Calculate amplifier, the second operational amplifier, the first adjustable partial pressure capacitance, the second adjustable partial pressure capacitance and derided capacitors；
The cathode connection ac buck step down side firewire of the rectifier diode, the anode connection of the rectifier diode
The cathode of the stabilizing inducatnce, the anode of the stabilizing inducatnce connect one end of the pressure measurement resistance, the pressure measurement resistance it is another
One end is grounded, and the fly-wheel diode is in parallel with the series circuit of the stabilizing inducatnce and the pressure measurement resistance, first fortune
The electrode input end of the electrode input end and the second operational amplifier of calculating amplifier connects the stabilizing inducatnce and pressure measurement electricity
Control circuit reference voltage, the first adjustable partial pressure electricity are adopted in the tie point of resistance, the cathode connection of the first adjustable partial pressure capacitance
The anode of appearance connects the cathode of the second adjustable partial pressure capacitance, and the cathode of the second adjustable partial pressure capacitance connects the partial pressure
The cathode of capacitance, the anode ground connection of the derided capacitors, the negative input connection described second of first operational amplifier
The cathode of adjustable partial pressure capacitance, the negative input of second operational amplifier connects the cathode of the derided capacitors, described
The amplifier output terminal of first operational amplifier connects the numeral of PLC controller with the amplifier output terminal of second operational amplifier
Input terminal, the electrode input end of the 3rd operational amplifier are exchanged with the negative input connection of the four-operational amplifier
Step-down transformer low-pressure side firewire, the negative input of the 3rd operational amplifier and the cathode of the four-operational amplifier
Input end grounding, the amplifier output terminal of the 3rd operational amplifier and the amplifier output terminal of four-operational amplifier pass through respectively
5th electromagnetic relay and the drive circuit are connected with four IGBT grids of the unsteady flow wave filter.
5. using the hybrid energy-storing method of the mixed energy storage system based on cold and hot electric system described in claim 4, its feature exists
In comprising the following steps：
Step 1：Initialization system initiation parameter：Set ac bus to softening electric storage means carry out storing up electricity or to heat-storing device into
Voltage threshold, the softening electric storage means of row electricity heat accumulation provide ac bus the electricity that electric energy or alternating current provide electric energy to ac bus
Press threshold value, power follower reference voltage level and adopt control circuit reference voltage value；
Step 2：The terminal voltage of flow control variable resistor is determined according to system initialization parameter, so that it is effective to obtain flow control variable resistor
Resistance, the capacitance of the first adjustable partial pressure capacitance and the capacitance of the second adjustable partial pressure capacitance are determined according to system initialization parameter
Value；
Step 3：Lead accumulator class upper limit threshold value and lower threshold in softening electric storage means are set by host computer；
Step 4：The make and break period T of 5th IGBT of setting softening booster circuit, the 5th when determining to use the inversion of alternating current branch
The IGBT turn-off times
Step 5：Disconnect each electromagnetic relay switch, closure is described with cogeneration cooling heating system and user's AC load exchanges mother
The switch that line is connected, PLC controller export closure signal to contactor, close contactor；
Step 6：The first operational amplifier of control circuit and the logical output values of the second operational amplifier are adopted, collection softening stores
The voltage of lead accumulator group in electric appliance, section where the voltage that PLC passes through logic judgment ac bus, to softening electric storage means and storage
The storage energy pattern of thermal is controlled；
Step 6.1：Adopt the first operational amplifier of control circuit and the logical output values of the second operational amplifier, collection softening
The voltage of lead accumulator group in electric storage means；
Step 6.2：Whether the logical output values for judging to adopt the first operational amplifier of control circuit are high, if so, performing step
6.3, otherwise, perform step 6.4；
Step 6.3：The 5th electromagnetic relay for adopting control circuit is disconnected, performs step 7；
Step 6.4：Whether the logical output values for judging to adopt the second operational amplifier of control circuit are high, if so, performing step
6.5, otherwise, perform step 6.10；
Step 6.5：Whether the voltage for judging to soften lead accumulator group in electric storage means is less than its lower threshold, if so, performing step
6.6, otherwise, perform step 6.8；
Step 6.6：4th electromagnetic relay of closure softening booster, disconnects the 3rd electromagnetic relay of softening booster；
Step 6.7：According to the make and break period T of the 5th IGBT of the softening booster circuit of setting and using the during mains-supplied the 5th
The IGBT turn-off timesBreak-make control is carried out to the 5th IGBT for softening booster, performs step 7；
Step 6.8：Disconnect the 4th electromagnetic relay of softening booster, the 3rd electromagnetic relay of closure softening booster；
Step 6.9：According to lead accumulator in the make and break period T and softening electric storage means of the 5th IGBT of the softening booster circuit of setting
The voltage of group softens the turn-off time of the 5th IGBT of booster when calculating using softening electric storage means power supplyTo softening booster
The 5th IGBT carry out break-make control, perform step 7；
Step 6.10：Closure adopts the 5th electromagnetic relay of control circuit；
Step 7：The voltage of lead accumulator group in collection softening electric storage means, PLC is by judging softening electric storage means lead accumulator group
Storing up electricity situation, controls the first electromagnetic relay and the second electromagnetic relay, realizes and heat-storing device and softening electric storage means are stored up
Can control；
Step 7.1：The voltage of lead accumulator group, judges lead accumulator group in the softening electric storage means of collection in collection softening electric storage means
Voltage whether be higher than its upper limit threshold, if so, then perform step 7.2, otherwise, perform step 7.3；
Step 7.2：Disconnect the first electromagnetic relay, close the second electromagnetic relay, the power transistor of power follower according to
Ac bus voltage effective value size carries out on-off line operation, realizes the heat accumulation control to heat-storing device, performs step 8；
Step 7.3：Close the first electromagnetic relay, disconnect the second electromagnetic relay, the power transistor of power follower according to
Ac bus voltage effective value size carries out on-off line operation, realizes and the storing up electricity for softening electric storage means is controlled；
Step 8：Judge whether contactless contactor turns off, if so, then system work terminates, otherwise, return to step 6.
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| Title |
|---|
| 主动储能调控在冷热电联供系统中的节能效果;杨启超等;《储能科学与技术》;20140731;第3卷(第4期);第316-321页 * |
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| CN105576678A (en) | 2016-05-11 |
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