CN109103925A - A kind of micro-capacitance sensor based on photovoltaic power generation - Google Patents
A kind of micro-capacitance sensor based on photovoltaic power generation Download PDFInfo
- Publication number
- CN109103925A CN109103925A CN201810857141.3A CN201810857141A CN109103925A CN 109103925 A CN109103925 A CN 109103925A CN 201810857141 A CN201810857141 A CN 201810857141A CN 109103925 A CN109103925 A CN 109103925A
- Authority
- CN
- China
- Prior art keywords
- current
- connected inverter
- converter
- breaker
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 18
- 238000004146 energy storage Methods 0.000 claims abstract description 22
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 11
- 230000010354 integration Effects 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 abstract description 8
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000005070 sampling Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- H02J3/385—
-
- 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
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of micro-capacitance sensors based on photovoltaic power generation, DC-DC converter 1 including input terminal connection photovoltaic module, the output end of the DC-DC converter 1 is sequentially connected multi-functional gird-connected inverter, breaker S1, breaker S2, power distribution network, the energy storage branch being composed in series by bidirectional DC-DC converter 2 and energy storage battery is connected on DC bus between DC-DC converter 1 and multi-functional gird-connected inverter, the branch of DC load is connected on DC bus between the energy storage branch and multi-functional gird-connected inverter, the branch of AC load is connected between breaker S1 and breaker S2；The multi-functional gird-connected inverter uses DC voltage, ac-side current Dual-loop feedback control control system.The instantaneous power that reactive power and photovoltaic module in AC load issue is acquired, instruction current inner ring carries out the active and Reactive-power control of active to electrical network access point, conducive to the stabilization of power grids and the economic electricity consumption of raising user.
Description
Technical field
The present invention relates to micro-capacitance sensor technical fields, and in particular to a kind of micro-capacitance sensor based on photovoltaic power generation.
Background technique
Solar energy has many advantages, such as that pollution-free, distribution is wide, reserves are big and renewable, at present solar power generation be broadly divided into from
Net type and mode of generating electricity by way of merging two or more grid systems.Parallel networking type photovoltaic electricity generation system by photovoltaic module, gird-connected inverter and access grid side and
Net switch composition, photovoltaic module converts solar energy into the DC side of direct current energy access grid-connected inverter, by inverter
DC side electric energy is converted to AC energy feed-in power grid by the double-closed-loop control of DC voltage current on line side, and photovoltaic module issues
Electric energy receive the influences of the conditions such as illumination, environment temperature and humidity, output power has very strong randomness and fluctuation
Property, and photovoltaic combining inverter usually has maximal power tracing (MPPT) link, then inverter be fed into power grid energy it is same
With biggish random and fluctuation characteristic, opposite power grid gird-connected inverter can be equivalent to a uncontrollable current source, when big
Measure photovoltaic distributed generation resource and access power grid, can operation to power grid and control cause adverse effect.Simultaneously with distributed power generation at present
Net runs relevant codes and standards, takes more limitation to distributed power generation, to reduce the impact to public electric wire net,
Which also limits giving full play to for distributed photovoltaic power generation efficiency.
Batteries to store energy link is introduced in photovoltaic system constitutes light-preserved system, the direct current which issues photovoltaic module
Electric energy is charged a battery by bidirectional DC-DC converter, and meets the prime power demand of user's AC load, basic
Energy management thought are as follows: meet the load of local AC load first, and maintain the safe state-of-charge of battery, then by remaining electricity
Online, impact of the reduction photovoltaic to power grid as far as possible, wherein the charging and discharging state of battery and operating current size can roots
It is adjusted according to electric network state, the control mode of such photovoltaic DC-to-AC converter is still confined to that photovoltaic energy is passively converted into alternating current
The mode of energy feed-in power grid initiatively cannot carry out active and Reactive-power control to electrical network access point, reduce photovoltaic parallel in system
The ability of flexibility access power grid, also constrains power grid to the digestion capability of distributed generation system.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of micro-capacitance sensors based on photovoltaic power generation, carry out to electrical network access point
The active and Reactive-power control of active, conducive to the stability of power grid and the economic power mode of raising user.
The invention is realized by the following technical scheme:
A kind of micro-capacitance sensor based on photovoltaic power generation, the DC-DC converter 1 including input terminal connection photovoltaic module, the DC-DC become
The output end of parallel operation 1 is sequentially connected multi-functional gird-connected inverter, breaker S1, breaker S2, power distribution network, in DC-DC converter 1
It is connected on DC bus between multi-functional gird-connected inverter and is connected group by bidirectional DC-DC converter 2 and energy storage battery
At energy storage branch, the branch of DC load is connected on the DC bus between the energy storage branch and multi-functional gird-connected inverter
Road is connected with the branch of AC load between breaker S1 and breaker S2；The multi-functional gird-connected inverter uses direct current
Side voltage, ac-side current Dual-loop feedback control control system, the DC voltage, ac-side current Dual-loop feedback control control system
The outer voltage of system is to DC bus-bar voltage VdcWith reference voltage U* dcError carry out PI proportional integration compensation as net side it is active
The amplitude of electric current instructs, and exchanges side voltage ugThe sin sinusoidal quantity of same-phase is multiplied to obtain the instruction of net side watt current；Exchange is negative
The reactive current component i of lotusqrefWith the reactive current feedback quantity i of multi-functional gird-connected inverter injection breaker S1qLfError warp
After the compensation of PI proportional integration, and side voltage u is exchangedgOrthogonal cos cosine amount is multiplied to obtain net side referenced reactive current；Net side has
Function current-order is added to obtain current on line side instruction i with net side referenced reactive currentref；Current inner loop instructs i to current on line sideref
With current on line side actual value iLfError carry out the compensation of PI proportional integration, be re-introduced into exchange side voltage ugAs feedforward control amount
Afterwards, multi-functional gird-connected inverter is controlled through SPWM.
Further scheme of the invention is the DC component of generated output mean value of the photovoltaic module within several sampling periods
Pdc is instructed as the amplitude of the net side watt current of multi-functional gird-connected inverter；AC compounent Pac is as bidirectional DC-DC converter
The current-order of device 2；The fluctuation of DC bus-bar voltage can be avoided in photovoltaic energy big ups and downs, prevent network access electric
Stream amplitude occur fluctuation, can effectively stabilize the fluctuation and randomness of photovoltaic power generation, conducive to power grid stability and
Improve the economic power mode of user.
Further scheme of the invention is that, in the power grid peak of power consumption stage, the multi-functional gird-connected inverter works in inverse
Change mode, for bidirectional DC-DC converter 2 under storage battery charge state safe condition, control energy storage battery works in electric discharge；?
Low power consumption stage, the multi-functional gird-connected inverter work in rectifier system, and bidirectional DC-DC converter 2 works in battery
Charge mode；Energy storage battery energy storage, electric discharge are controlled respectively in low power consumption and peak phase, and certain to power distribution network progress have
Function support, alleviates the pressure of power distribution network, further increases the stability of power grid.
Further scheme of the invention is, the multi-functional gird-connected inverter includes being composed in series the power of the first bridge arm to open
Pipe V1 and power switch tube V2 is closed, and is composed in series the power switch tube V3 and power switch tube V4 of the second bridge arm, the first bridge
Arm and the second bridge arm compose in parallel single-phase inversion full-bridge, and the ac output end of the inversion full-bridge is through inductance L connection power distribution network.
The advantages of the present invention over the prior art are that:
By voltage and current instantaneous values feedback control program to multi-functional gird-connected inverter realize current on line side power factor with
And the good control of network side current waveform, pass through the instantaneous function of reactive power and photovoltaic module sending in acquisition AC load
Rate, and the current inner loop of multi-functional gird-connected inverter is instructed, realize the active and idle tune that active is carried out to electrical network access point
Section, conducive to the stability of power grid and the economic power mode of raising user.
Detailed description of the invention
Fig. 1 is the micro-capacitance sensor structure chart of the invention based on photovoltaic power generation.
Fig. 2 is multi-functional gird-connected inverter structure chart of the invention.
Fig. 3 is present invention injection power distribution network active power, Reactive Power Control policy map.
Fig. 4 is DC voltage of the invention, ac-side current Dual-loop feedback control control system block diagram.
Fig. 5 is the DC component Pdc and AC compounent of generated output mean value of the photovoltaic module within a sampling period
Pac calculation flow chart.
Specific embodiment
A kind of micro-capacitance sensor based on photovoltaic power generation as depicted in figs. 1 and 2, the DC- including input terminal connection photovoltaic module
DC converter 1, the output end of the DC-DC converter 1 be sequentially connected multi-functional gird-connected inverter, breaker S1, breaker S2,
Power distribution network, the multi-functional gird-connected inverter include the power switch tube V1 and power switch tube V2 for being composed in series the first bridge arm,
And it is composed in series the power switch tube V3 and power switch tube V4 of the second bridge arm, the first bridge arm and the second bridge arm compose in parallel list
The ac output end of the inversion full-bridge of phase, the inversion full-bridge exchanges side through inductance L connection；DC-DC converter 1 with it is multi-functional
The energy storage being composed in series by bidirectional DC-DC converter 2 and energy storage battery is connected on DC bus between gird-connected inverter
Branch is connected with the branch of DC load on the DC bus between the energy storage branch and multi-functional gird-connected inverter, disconnected
The branch of AC load is connected between road device S1 and breaker S2.
When power distribution network is in normal condition, photovoltaic module is under generating state, breaker S1, breaker S2 closure, DC-
DC converter 1 works in maximal power tracing (MPPT) mode, and DC bus-bar voltage increases, and DC bus energy passes through multi-functional
Gird-connected inverter is converted into AC energy and is output to local AC load, passes through breaker S2 feed-in electricity if having excess energy
Net；If the electric energy that photovoltaic module is issued in MPPT is not able to satisfy AC load, difference energy passes through open circuit by power grid
Device S2 is input to AC load；If power grid breaks down, controls bidirectional DC-DC converter 2 and energy storage battery is discharged, it is more
Function gird-connected inverter works in independent inverting, guarantees the reliable power supply of AC load.
The multi-functional gird-connected inverter uses such as Fig. 4 DC voltage, ac-side current Dual-loop feedback control control system,
The DC voltage, ac-side current Dual-loop feedback control control system outer voltage to DC bus-bar voltage VdcWith reference electricity
Press U* dcError carry out the compensation of PI proportional integration to eliminate steady-state error between the two, output valve is as net side watt current
Amplitude instruction, and exchange side voltage ugCos sinusoidal quantity be multiplied to obtain the instruction of net side watt current；The idle electricity of AC load
Flow component iqrefWith the reactive current feedback quantity i of multi-functional gird-connected inverter injection breaker S1qLfError through PI proportional integration
After compensation, and side voltage u is exchangedgSin sinusoidal quantity be multiplied to obtain net side referenced reactive current；The instruction of net side watt current and net
Side referenced reactive current is added to obtain current on line side instruction iref；Current inner loop instructs i to current on line siderefWith current on line side reality
Value iLfError carry out the compensation of PI proportional integration, then calculate and exchange side voltage ugError after, through SPWM control it is multi-functional simultaneously
Net inverter.
DC bus-bar voltage VdcIt is obtained by sensor sample, reference voltage U* dcFor preset value, side voltage u is exchangedg's
Cos sinusoidal quantity, sin sinusoidal quantity are calculated by phase-locked loop pll, the reactive current component i of AC loadqrefBy being handed in Fig. 3
Ul, il of stream load are calculated, the reactive current feedback quantity i of multi-functional gird-connected inverter injection breaker S1qLfPass through sensing
Device sampling inductive current and voltage on line side signal are calculated, current on line side actual value iLfIt is obtained by sensor sample, it is above
Calculative parameter is respectively provided with mature algorithm, does not repeat them here.
When photovoltaic module is under generating state, the variation of the conditions such as illumination, environment temperature causes DC-DC converter 1 to be injected
To the corresponding fluctuation of DC bus energy production, to avoid multi-functional gird-connected inverter from being injected into power distribution network energy by breaker S1
Amount big ups and downs pass through as shown in figure 3, the voltage and current numerical value for being injected into DC bus to DC-DC converter 1 samples
Calculation method shown in fig. 5, obtain generated output mean value of the photovoltaic module within 100 sampling periods DC component Pdc and
AC compounent Pac, wherein DC component Pdc is instructed as the amplitude of the net side watt current of multi-functional gird-connected inverter, so that
Photovoltaic fluctuation energy is buffered by energy storage battery charge and discharge, to inhibit the fluctuation of gird-connected inverter network access energy；Exchange
Current-order of the component Pac as bidirectional DC-DC converter 2, for controlling energy storage battery charge and discharge mode and practical electricity
Flow size.
The multi-functional gird-connected inverter carries out Reactive-power control to electrical network access point, as shown in figure 3, controller acquisition is handed over
The voltage and current of current load calculates reactive component therein in real time, and using the corresponding reactive current of the reactive component as more function
The net side referenced reactive current of energy gird-connected inverter makes the reactive component of multi-functional gird-connected inverter output by pi regulator
Net side referenced reactive current can be accurately tracked, the idle tune to electrical network access point is realized to compensation idle in local load
Section.
The multi-functional gird-connected inverter can be realized according to the load peak valley period of electrical network access point to power grid
Active support；In the power grid peak of power consumption stage in the daytime, the multi-functional gird-connected inverter works in inverting, bi-directional DC-DC
For converter 2 under storage battery charge state safe condition, control energy storage battery works in electric discharge, photovoltaic module and energy storage electric power storage
Pond is contributed together, and certain active support is played to electrical network access point；It is described multi-functional grid-connected inverse in the low power consumption stage at night
Become device and work in rectifier system, bidirectional DC-DC converter 2 works in battery charging mode, charges to energy storage battery.
Currently with the continuous decrease of photovoltaic installation cost, photovoltaic cheap internet access becomes the inexorable trend of photovoltaic power generation, and
Household low capacity photovoltaic parallel in system can also be promoted on a large scale, thus bring more unstable factors to power grid,
And the photovoltaic module unit that there is proposed by the present invention and power grid the micro-capacitance sensor of certain interaction function not only to make multiple low capacities
Grid stability will not be formed and be negatively affected, moreover it is possible to played an active part in the Power Regulation pressure regulation of power grid, therefore be sent out in following new energy
Electrical domain has broad application prospects.
Claims (4)
1. a kind of micro-capacitance sensor based on photovoltaic power generation, it is characterised in that: the DC-DC converter including input terminal connection photovoltaic module
1, the output end of the DC-DC converter 1 is sequentially connected multi-functional gird-connected inverter, breaker S1, breaker S2, power distribution network,
It is connected on DC bus between DC-DC converter 1 and multi-functional gird-connected inverter by bidirectional DC-DC converter 2 and storage
The energy storage branch that energy storage device is composed in series connects on the DC bus between the energy storage branch and multi-functional gird-connected inverter
There is the branch of DC load, the branch of AC load is connected between breaker S1 and breaker S2；It is described multi-functional grid-connected
Inverter uses DC voltage, ac-side current Dual-loop feedback control control system, and the DC voltage, ac-side current are double
The outer voltage of closed-loop feedback control system is to DC bus-bar voltage VdcWith reference voltage U* dcError carry out PI proportional integration benefit
The amplitude instruction as net side watt current is repaid, and exchanges side voltage ugThe sin sinusoidal quantity of same-phase is multiplied to obtain net side active
Current-order；The reactive current component i of AC loadqrefIt is anti-with the reactive current of multi-functional gird-connected inverter injection breaker S1
Feedback amount iqLfError after the compensation of PI proportional integration, and exchange side voltage ugOrthogonal cos cosine amount is multiplied to obtain net side idle
Current-order；The instruction of net side watt current is added to obtain current on line side instruction i with net side referenced reactive currentref；Current inner loop pair
Current on line side instructs irefWith current on line side actual value iLfError carry out the compensation of PI proportional integration, be re-introduced into exchange side voltage ug
After feedforward control amount, multi-functional gird-connected inverter is controlled through SPWM.
2. a kind of micro-capacitance sensor based on photovoltaic power generation as described in claim 1, it is characterised in that: photovoltaic module is adopted several
Amplitude of the DC component Pdc of generated output mean value in the sample period as the net side watt current of multi-functional gird-connected inverter
Instruction；Current-order of the AC compounent Pac as bidirectional DC-DC converter 2.
3. a kind of micro-capacitance sensor based on photovoltaic power generation as described in claim 1, it is characterised in that: in power grid peak of power consumption rank
Section, the multi-functional gird-connected inverter work in inverting, and bidirectional DC-DC converter 2 is in the safe shape of storage battery charge state
Under state, control energy storage battery works in electric discharge；In the low power consumption stage, the multi-functional gird-connected inverter works in rectification square
Formula, bidirectional DC-DC converter 2 work in battery charging mode.
4. a kind of micro-capacitance sensor based on photovoltaic power generation as claimed in claim 1 or 3, it is characterised in that: described multi-functional grid-connected
Inverter includes the power switch tube V1 and power switch tube V2 for being composed in series the first bridge arm, and is composed in series the second bridge arm
Power switch tube V3 and power switch tube V4, the first bridge arm and the second bridge arm compose in parallel single-phase inversion full-bridge, the inversion
The ac output end of full-bridge exchanges side through inductance L connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857141.3A CN109103925B (en) | 2018-07-31 | 2018-07-31 | Photovoltaic power generation-based microgrid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857141.3A CN109103925B (en) | 2018-07-31 | 2018-07-31 | Photovoltaic power generation-based microgrid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109103925A true CN109103925A (en) | 2018-12-28 |
| CN109103925B CN109103925B (en) | 2022-01-28 |
Family
ID=64847867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810857141.3A Active CN109103925B (en) | 2018-07-31 | 2018-07-31 | Photovoltaic power generation-based microgrid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109103925B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635704A (en) * | 2019-08-22 | 2019-12-31 | 江苏固德威电源科技股份有限公司 | Inverter bus voltage control method |
| CN110729760A (en) * | 2019-10-31 | 2020-01-24 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN111277003A (en) * | 2020-03-30 | 2020-06-12 | 贵州长征输配电电气有限公司 | Micro-grid power distribution system |
| CN112421639A (en) * | 2020-10-28 | 2021-02-26 | 许继集团有限公司 | System and method for regulating line voltage of distributed photovoltaic power generation access distribution station area |
| CN113036804A (en) * | 2021-03-22 | 2021-06-25 | 西安领充创享新能源科技有限公司 | AC/DC micro-grid control method and device |
| CN113178874A (en) * | 2021-05-12 | 2021-07-27 | 广东省古瑞瓦特新能源有限公司 | Reactive compensation method and system for photovoltaic grid-connected inverter |
| CN114221374A (en) * | 2021-11-05 | 2022-03-22 | 三峡大学 | Flexible platform area based on direct-current micro-grid and coordination control method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835332A (en) * | 2006-03-25 | 2006-09-20 | 合肥工业大学 | Photovoltaic converter with functions of disconnecting net, connecting net, charging control and regulating power |
| CN103647302A (en) * | 2013-12-05 | 2014-03-19 | 上海电力学院 | Multi-sub microgrid-contained mixed microgrid system and control method thereof |
| CN104810858A (en) * | 2015-05-27 | 2015-07-29 | 广西大学 | Control method for grid-connected power generation system of optical storage microgrid |
| CN104821607A (en) * | 2015-05-15 | 2015-08-05 | 东北大学 | Photovoltaic microgrid power equalization control method based on three-end cooperative control |
| CN105743127A (en) * | 2016-04-27 | 2016-07-06 | 国电南瑞科技股份有限公司 | Household new energy power generation intelligent control system and control method |
| US20170047862A1 (en) * | 2014-04-30 | 2017-02-16 | Hunan University | Steady state control method for three-phase double-mode inverter |
| CN107171359A (en) * | 2017-06-05 | 2017-09-15 | 南京工程学院 | A kind of T-shaped three level photovoltaic inverting system and control strategy containing energy storage |
-
2018
- 2018-07-31 CN CN201810857141.3A patent/CN109103925B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1835332A (en) * | 2006-03-25 | 2006-09-20 | 合肥工业大学 | Photovoltaic converter with functions of disconnecting net, connecting net, charging control and regulating power |
| CN103647302A (en) * | 2013-12-05 | 2014-03-19 | 上海电力学院 | Multi-sub microgrid-contained mixed microgrid system and control method thereof |
| US20170047862A1 (en) * | 2014-04-30 | 2017-02-16 | Hunan University | Steady state control method for three-phase double-mode inverter |
| CN104821607A (en) * | 2015-05-15 | 2015-08-05 | 东北大学 | Photovoltaic microgrid power equalization control method based on three-end cooperative control |
| CN104810858A (en) * | 2015-05-27 | 2015-07-29 | 广西大学 | Control method for grid-connected power generation system of optical storage microgrid |
| CN105743127A (en) * | 2016-04-27 | 2016-07-06 | 国电南瑞科技股份有限公司 | Household new energy power generation intelligent control system and control method |
| CN107171359A (en) * | 2017-06-05 | 2017-09-15 | 南京工程学院 | A kind of T-shaped three level photovoltaic inverting system and control strategy containing energy storage |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635704A (en) * | 2019-08-22 | 2019-12-31 | 江苏固德威电源科技股份有限公司 | Inverter bus voltage control method |
| CN110635704B (en) * | 2019-08-22 | 2021-08-24 | 江苏固德威电源科技股份有限公司 | Inverter bus voltage control method |
| CN110729760A (en) * | 2019-10-31 | 2020-01-24 | 阳光电源股份有限公司 | Wind-solar hybrid power generation system |
| CN111277003A (en) * | 2020-03-30 | 2020-06-12 | 贵州长征输配电电气有限公司 | Micro-grid power distribution system |
| CN112421639A (en) * | 2020-10-28 | 2021-02-26 | 许继集团有限公司 | System and method for regulating line voltage of distributed photovoltaic power generation access distribution station area |
| CN112421639B (en) * | 2020-10-28 | 2023-03-31 | 许继集团有限公司 | System and method for regulating line voltage of distributed photovoltaic power generation access distribution station area |
| CN113036804A (en) * | 2021-03-22 | 2021-06-25 | 西安领充创享新能源科技有限公司 | AC/DC micro-grid control method and device |
| CN113036804B (en) * | 2021-03-22 | 2024-01-26 | 西安领充创享新能源科技有限公司 | AC/DC micro-grid control method and device |
| CN113178874A (en) * | 2021-05-12 | 2021-07-27 | 广东省古瑞瓦特新能源有限公司 | Reactive compensation method and system for photovoltaic grid-connected inverter |
| CN114221374A (en) * | 2021-11-05 | 2022-03-22 | 三峡大学 | Flexible platform area based on direct-current micro-grid and coordination control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109103925B (en) | 2022-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Shan et al. | Model predictive control of bidirectional DC–DC converters and AC/DC interlinking converters—A new control method for PV-wind-battery microgrids | |
| CN109103925A (en) | A kind of micro-capacitance sensor based on photovoltaic power generation | |
| İnci | Active/reactive energy control scheme for grid-connected fuel cell system with local inductive loads | |
| Colak et al. | A survey on the contributions of power electronics to smart grid systems | |
| CN102983589B (en) | Control method of grid friendly type distributed power source based on hybrid energy storage | |
| US10211721B2 (en) | DC/AC converter apparatus comprising means for controlling the reactive power and power conversion and generation system comprising such DC/AC converter apparatus | |
| CN107482614B (en) | Suitable for the voltage-controlled hybrid energy-storing control method of off-network type direct-current grid | |
| Kotra et al. | Energy management of hybrid microgrid with hybrid energy storage system | |
| CN104319816A (en) | Optical storage alternating current and direct current hybrid micro-grid system and control method thereof | |
| CN104810858A (en) | Control method for grid-connected power generation system of optical storage microgrid | |
| CN201608533U (en) | Hybrid dynamic reactive compensation system applied to power grid | |
| CN105245018A (en) | Distributed energy storage system for improving confidence capacitance of photovoltaic power station | |
| CN204118759U (en) | A kind of light storage alternating current-direct current mixing micro-grid system | |
| CN107872070A (en) | Photovoltaic microgrid system and its control method | |
| CN107482659B (en) | Exchange mixed energy storage system control method for coordinating under micro-capacitance sensor off-network state | |
| CN109193613A (en) | A kind of DC micro power grid system and its control method | |
| GB2557283A (en) | Microgrid for Use in a Built Environment and Associated Apparatuses and Methods of Operating the Same | |
| CN109888845A (en) | A kind of alternating current-direct current mixing micro-capacitance sensor | |
| CN107039991A (en) | A kind of light storage off-network independent power supply device and method based on MMC topologys | |
| CN111371120A (en) | Micro-grid smooth switching control system and method based on LCL grid-connected inverter | |
| CN103280835B (en) | The generating state control method of three-phase grid photovoltaic DC-to-AC converter | |
| Zhou et al. | The study of power electronic transformer on power flow control and voltage regulation in DC micro-grid | |
| Pozo et al. | Battery energy storage system for a hybrid generation system grid connected using fuzzy controllers | |
| CN113629765B (en) | Multi-mode operation control system of optical storage virtual synchronous machine | |
| Ahmad et al. | Voltage stability improvement by placing unified power flow controller (UPFC) at suitable location in power system network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |