CN105932704A - Photovoltaic direct current side energy storage based power grid intelligent regulation and control system - Google Patents
Photovoltaic direct current side energy storage based power grid intelligent regulation and control system Download PDFInfo
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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
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- 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
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- 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
Abstract
The invention discloses a photovoltaic direct current side energy storage based power grid intelligent regulation and control system. The power grid intelligent regulation and control system comprises a regional main power grid, and a power grid dispatching control system, other power supplies and multiple photovoltaic stations which are connected with the regional main power grid separately; each photovoltaic station comprises a photovoltaic power generation unit, an energy storage unit, a power transmission unit, a power grid intelligent regulation and control sub system, an energy storage battery, a charging-discharging control unit, a bidirectional photovoltaic inverter, a voltage boosting-bucking transformer, a power grid and a power grid intelligent regulation and control sub system; and the power grid intelligent regulation and control sub system comprises a concentrated intelligent regulation and control sub system and an energy deployment management system. The power grid intelligent regulation and control sub system comprises the concentrated intelligent control unit and the energy deployment management system; and the stored electric energy of each photovoltaic station can be fully deployed through information exchange with the power grid dispatching control system, so that the consumption capability of the power grid on the large-scale clean energy, and the safety and stability level of the power system are improved, the thermal power ratio is lowered, and the energy consumption is reduced.
Description
Technical field
The present invention relates to a kind of electrical network intelligent control system, particularly relate to a kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side, belong to photovoltaic DC side energy storage electrical network intelligent control system field.
Background technology
Along with the development of modern industry, global energy crisis and atmosphere polluting problem become increasingly conspicuous, traditional fuel energy reduces the most day by day, and the harm causing environment becomes increasingly conspicuous, and the whole world there are about 2,000,000,000 people and can not get normal energy supply simultaneously.In this time, regenerative resource has all been invested sight in the whole world, it is desirable to regenerative resource can change the energy resource structure of the mankind, maintains long-range sustainable development.Clean energy resource has obtained developing on a large scale very much in recent years.Power supply architecture also there occurs great changes, currently with getting more and more that natural energy resources generates electricity.
Various wind power plants, various forms of photo-voltaic power generation station have also been obtained the biggest popularization.From the point of view of electrical network, they think that wind-powered electricity generation, photovoltaic are all " rubbish power supplys ", the most unstable.The technology seriality of wind-power electricity generation is very poor, just strong when that wind being big, the most weak the when that wind being little, causes that to abandon now wind ratio of rationing the power supply more serious.Photovoltaic generation diurnally generates electricity, and nocturnal radiation degree is zero, and exerting oneself also is zero.Photovoltaic generation has randomness, an intermittent and obvious periodically feature, at present can't Accurate Prediction, it is impossible to participate in power balance and enter generation schedule arrangement.When photovoltaic plant is exerted oneself, other power supply in electrical network needs adjustment to exert oneself, and concedes load and is powered by photovoltaic generation.Affected by weather, when photovoltaic generation is exerted oneself and declined rapidly, it is necessary to be that its meritorious offer of exerting oneself compensates regulation by other conventional energy resource, lasting to power load, reliably, power safely to ensure.The variable capacity prepared for photovoltaic generation, it is impossible to complete by provisional start/stop machine, and be in spinning reserve state.Photovoltaic generation installed capacity is the biggest, and the spinning reserve prepared for this is the biggest.So electrical network needs other thermal power generation to the peak load that disappears.New forms of energy can not be more than 15% in the electrical network general requirement of electric energy ratio.
Being limited by photovoltaic generation undulatory property, after grid-connected photovoltaic reaches the certain proportion of electrical network, this undulatory property can bring the biggest harm to electrical network, and therefore, photovoltaic energy storage system is developed.
Energy storage now is essentially all " Zhangbei County's concentration energy storage " pattern, Zhangbei County concentrates energy storage to be traditional photovoltaic energy storage method, it is centralized, need by boosting, blood pressure lowering, two-way inverter carries out charge and discharge process, and electric energy transition loss is big in this process, and cost of investment is the highest, allocate limited in one's ability.Concentration builds energy-storage system, too increases power station cost.Widely popularize so hardly resulting in.
Existing energy storage mode can be divided into substantially:
1. water storage energy storage: utilize electric energy during electric load low ebb to draw water to upper storage reservoir, discharge water again in electric load peak period to the power station of lower storage reservoir generating.
2. compressed-air energy storage: refer to, in the network load low ebb phase, electric energy is used for compressed air, by air high pressure sealing in abandoned well, the seabed air accumulator of sedimentation, cavern, expired Oil/gas Well or newly-built gas storage well, in the energy storage mode of network load peak period release compressed air pushing turbine generating.
3. gravitional force: convert electrical energy into gravitional force and store
4. flywheel energy storage: utilize motor flywheel driven high speed rotating, convert electrical energy into mechanical energy storage, flywheel drives electrical power generators when needed.
5. chemical energy storage: electrochemical energy storage includes lead-acid battery, lithium ion battery, flow battery, sodium-sulphur battery etc..
Above energy storage mode all cannot function as network system peak-clipping and valley-filling, can only solve the electrical problem of some loads on the spot.
At the electric energy storage facility that Generation Side is built, participating in peak regulation as independent subject, charge power should be more than 10MW level, and the persistent period should be more than 4 hours levels.The investment that such a electricity energy-storage system needs is not a peanut, the photovoltaic greatly nibbled because rationing the power supply especially for profit and wind-powered electricity generation, is difficult in a short time adjust in economy.
The thermoelectricity that current network system allotment quota is all made by equivalent capability does stand-by heat, and water power assists.So it is greatly increased investment and the energy waste of thermoelectricity.
Summary of the invention
The technical problem to be solved is that the deficiency for background technology provides a kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side.
The present invention solves above-mentioned technical problem by the following technical solutions:
nullA kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side，Inclusion region mains network，And the dispatching of power netwoks control system being connected with region mains network respectively、Other power supply and multiple photovoltaic plant，Described photovoltaic plant comprises photovoltaic generation unit、Energy-storage units、Power transmission unit、Electrical network intelligent control subsystem、Energy storage battery、Charge-discharge control unit、Two-way photovoltaic DC-to-AC converter、Step transformer、Electrical network、Electrical network intelligent control subsystem，Described electrical network intelligent control subsystem comprises centralized intelligence regulator system and energy adjustmenting management system，Described photovoltaic generation unit、Energy-storage units、Power transmission unit、Electrical network is sequentially connected with，Described energy storage battery is connected with energy-storage units by charge-discharge control unit，Described two-way photovoltaic DC-to-AC converter is connected with power transmission unit by step transformer，Described electrical network intelligent control subsystem respectively with energy-storage units、Output unit and electrical network connect.
As the further preferred scheme of a kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side of the present invention, described centralized intelligence control unit is connected with charge-discharge control unit, two-way photovoltaic DC-to-AC converter and dispatching of power netwoks control system respectively through RS485 or TP/IP ethernet communication.
As the further preferred scheme of a kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side of the present invention, described photovoltaic generation unit comprises the photovoltaic cell plate array and photovoltaic combiner box being sequentially connected with.
As the further preferred scheme of a kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side of the present invention, electrical network intelligent control system is to combine existing power grid regulation mode and control principle, fully allocates photovoltaic electric energy by each photovoltaic regulator system.
As the further preferred scheme of a kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side of the present invention, described two-way photovoltaic DC-to-AC converter uses the two-way photovoltaic DC-to-AC converter of Huawei SUN2000 series.
The present invention uses above technical scheme compared with prior art, has following technical effect that
1, the present invention solves conventional photovoltaic power station generating capacity and does not mates with fan-out capability, the problem of upper network electric energy quality difference under different weather environmental effect；
2, the present invention uses exploitation DC side energy storage mode, on the premise of not increasing unit cost of electricity-generating, contrasts centralized energy storage and improves power transmission and transformation efficiency, improve the input electrical network quality of power supply, for breaking new forms of energy at electrical network electric energy 15% bottleneck, does useful experiment；
3, the present invention increases photovoltaic plant battery component generator unit loading amount, generating curve peak value surmounts power transmission and transformation power curve, the generated output exceeded receives in inverter direct-flow side DC/DC energy storage, compensate less than power transmission and transformation power curve energy storage release, form similar water power, thermoelectricity firm power generating curve；
4, the present invention balances the fluctuation of solar energy by the method for energy storage, enables the power of combining inverter steadily to export, and reduces the harm to operation of power networks；
5, the present invention is by the Demonstration Application of DC side light-preserved system, improves electrical network to the digestion capability of extensive clean energy resource and power system safety and stability level, lays a solid foundation for country's supporting plan " wind, light, water, gas " complemental power-generation cooperation；
6, the present invention is except the electricity more than needed of power grid wind of can dissolving again, reaches scene or the effect of other electricity mutual complementation, can replace the peak-frequency regulation function of fired power generating unit on long terms, reduces thermoelectricity proportioning, saves energy domination.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of the present invention；
Fig. 2 is increase generating photovoltaic panel, energy storage compensation and the tradition 500KW generated output curve synoptic diagram of the present invention；
Fig. 3 be the photovoltaic plant of the present invention primary electricity curve and smooth after curve synoptic diagram；
Fig. 4 is the DC/DC working method flow chart of the present invention；
Fig. 5 is the DC/AC working method flow chart of the present invention；
Fig. 6 is the internal module communication modes schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is described in further detail:
nullAs shown in Figure 1，A kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side，Inclusion region mains network，And the dispatching of power netwoks control system being connected with region mains network respectively、Other power supply and multiple photovoltaic plant，Described photovoltaic plant comprises photovoltaic generation unit、Energy-storage units、Power transmission unit、Electrical network intelligent control subsystem、Energy storage battery、Charge-discharge control unit、Two-way photovoltaic DC-to-AC converter、Step transformer、Electrical network、Electrical network intelligent control subsystem，Described electrical network intelligent control subsystem comprises centralized intelligence regulator system and energy adjustmenting management system，Described photovoltaic generation unit、Energy-storage units、Power transmission unit、Electrical network is sequentially connected with，Described energy storage battery is connected with energy-storage units by charge-discharge control unit，Described two-way photovoltaic DC-to-AC converter is connected with power transmission unit by step transformer，Described electrical network intelligent control subsystem respectively with energy-storage units、Output unit and electrical network connect，Described centralized intelligence control unit through RS485 or TP/IP ethernet communication respectively with charge-discharge control unit、Two-way photovoltaic DC-to-AC converter and dispatching of power netwoks control system connect，Described photovoltaic generation unit comprises the photovoltaic cell plate array and photovoltaic combiner box being sequentially connected with.Described two-way photovoltaic DC-to-AC converter uses the two-way photovoltaic DC-to-AC converter of Huawei SUN2000 series.
As shown in Figure 6, the internal module communication modes schematic diagram of the present invention: the outfan of described photovoltaic module connects the input of energy storage battery through overcharge DC/DC module, for storing energy storage battery by the electric energy that photovoltaic module produces；The outfan of described photovoltaic module connects the input of electrical network through two-way photovoltaic DC-to-AC converter, provides required electric energy through boosting for electrical network for the electric energy produced by photovoltaic module；The outfan of described energy storage battery sequentially passes through electric discharge DC/DC module, the input of two-way photovoltaic DC-to-AC converter connection electrical network, and it is the required electric energy of electrical network offer that the electric energy for being stored by energy storage battery passes through boosting；It is mutual that described centralized intelligence control unit carries out information with charging DC/DC module, energy storage battery, electric discharge DC/DC module and two-way photovoltaic DC-to-AC converter respectively, monitors its energy state in real time.Described centralized intelligence control unit is connected with charging DC/DC module, energy storage battery, electric discharge DC/DC module and two-way photovoltaic DC-to-AC converter respectively through RS485 communication.
The effect of charging DC/DC module is to be connected on energy storage battery and DC/AC after photovoltaic module boosting, DC/DC MPPT to be completed, and when instruction or shutdown occurs rationing the power supply in DC/AC, charging DC/DC module is stored in the energy of photovoltaic battery panel in energy-storage battery.
The effect of DC/AC inverter is that the energy on the energy of photovoltaic battery panel and energy-storage battery is transported to electrical network up.
The effect of energy storage battery is when photovoltaic energy too much or deposits energy-storage battery when electrical network is rationed the power supply the energy of photovoltaic cell, and when occurring that photovoltaic generation fluctuates, energy-storage battery discharges, and reaches to balance the purpose of direct current fluctuation.When not having energy at low power consumption and photovoltaic battery panel, it is possible to the dump energies such as wind energy of dissolving, energy-storage battery can be charged by dispatching of power netwoks by AC/DC.
Network system is allocated: network system can carry out system allotment according to the electricity of photovoltaic energy storage, and the energy storage electricity of each photovoltaic plant concentrates energy management system delivering to power network dispatching system center on the energy storage electricity in each power station by intelligence.Electric energy is carried under normal circumstances by the straight electricity generation grid-connecting of photovoltaic, when photovoltaic panel undercapacity according to institute's short of electricity energy amount, power network dispatching system center sends regulation and control instruction, by each photovoltaic plant energy storage device exert oneself conveying electric energy fill out paddy to electrical network, reach grid power transmission balance.Rich at electrical network electric energy, in the case of the photovoltaic energy storage idleness of equipment, power network dispatching system center can be charged according to the accumulation of energy situation of energy storage device, absorbs the unnecessary electricity of electrical network.
The effect of the invention and advantage: combine the architectural feature of innovation and creation and write it exactly and compared with prior art have the advantage that: the such as raising of productivity, quality, precision and efficiency, energy consumption, raw material, the saving of operation；The simplicity process, operate, control, used, the control of environmental pollution or radical cure etc..
The present invention, compared to other scheme, decreases multiple energy transformation process；DC/AC---boosts----blood pressure lowering---processes such as AC/DC, directly completes energy storage at two-way photovoltaic inverter direct-flow side, has stopped electric energy and repeatedly converted the loss of more than 20%, but effect is the same, reduce cost purpose.Exchange fully allotment energy storage electric energy by the information of same dispatching of power netwoks control system, reduce or replace the stand-by heat quota of thermoelectricity, energy-saving and emission-reduction, saving energy resource consumption.
One, economic benefit:
L contrast centralized energy storage every megawatt of every day of one charge and discharge computation of Period can save general 20.53 ten thousand yuan in 25 years
L contrast concentrates energy-accumulating power station every megawatt configuration investment to save general 87.5 ten thousand yuan
Two, social benefit:
Improve generation of electricity by new energy input electrical network energy quality；Not increasing the unit cost of electricity-generating of enterprise, energy storage is additionally subsidized down by country, so that it may improve the mesh of generation of electricity by new energy input electrical network energy quality；Generation of electricity by new energy proportion will be improved greatly；For breaking new forms of energy at electrical network electric energy 15% bottleneck, do useful experiment；Can have AGC/AVC (meritorious/reactive automatic control system) regulating power；Putting into operation of numerous DC side energy storage photovoltaic plant, can have the energy-storage battery group of AGC/AVC regulating power, huge adjustable resource can be formed, thering is provided more preferable voltage support function, complementary for country's supporting plan " scene, water, fire, gas, core " and electrical network comprehensive adjustment ability plays great function.
Three, ecological environment:
New forms of energy product, pollution-free: photovoltaic module, lithium battery energy storage battery cabinet, new forms of energy product in system, environmental friendliness is pollution-free.
Energy-saving and emission-reduction: citing 2MW photovoltaic system (actual disposition 2.5MW) year generating 4,500,000 kilowatt hours, can save 1809.78 tons of standard coals every year, reduce 1222.83 tons of dust, 4475.54 tons of CO2 discharge capacitys.
Make full use of solar energy resources: the resourceful area of solar illuminating, make full use of clean energy resource.
As in figure 2 it is shown, increase generating photovoltaic panel, energy storage compensation and the tradition 500KW generated output curve synoptic diagram of the present invention；Increase photovoltaic plant battery component generator unit loading amount, generating curve peak value surmounts power transmission and transformation power curve, the generated output exceeded receives in inverter direct-flow side DC/DC energy storage, compensates less than power transmission and transformation power curve energy storage release, forms similar water power thermoelectricity firm power generating curve.
As shown in Figure 3, the photovoltaic plant of the present invention primary electricity curve and smooth after curve synoptic diagram, power back-off pattern except mode standard, system also can be according to the data of weather station in luminous power prediction and station, the different synoptic models such as Intelligent Recognition rainy weather, sleety weather, the quality of power supply is then repaired by system by different compensation ways, ensures stable electric power output.
Network system can carry out system allotment according to the electricity of photovoltaic energy storage, and the energy storage electricity of each photovoltaic plant concentrates energy management system center delivering to power network dispatching system center on the energy storage electricity in each power station by intelligence.Electric energy is carried under normal circumstances by the straight electricity generation grid-connecting of photovoltaic, when photovoltaic panel undercapacity according to institute's short of electricity energy amount, power network dispatching system center sends regulation and control instruction, by each photovoltaic plant energy storage device exert oneself conveying electric energy fill out paddy to electrical network, reach grid power transmission balance.Rich at electrical network electric energy, in the case of the photovoltaic energy storage idleness of equipment, power network dispatching system center can be charged according to the accumulation of energy situation of energy storage device, absorbs the unnecessary electricity of electrical network.
1) as shown in Figure 4, DC/DC is single-way switch DC voltage booster circuit booster circuit, and its effect is being stored in energy-storage battery after the energy boost of photovoltaic battery panel or being sent to electrical network up by after DC/AC inversion.The information that its reception DC/AC and battery manager send. when the energy of DC/AC output and the energy of DC/DC MPPT output are equal, the energy of photovoltaic battery panel all will be exported on electrical network by DC/AC and go, when DC/AC breaks down or ration the power supply instruction, the part energy of DC/DC output will proceed in energy-storage battery, the generated energy reaching photovoltaic battery panel can be obtained by, and occurs without the phenomenon abandoning electricity.
2) as it is shown in figure 5, DC/AC is two-way inverter, two-way inverter is exactly that energy can be operated in rectification and two kinds of mode of operations of inversion with two-way flow.Its method of work is constant voltage or constant current mode, and during constant voltage work, DC/DC carries out MPPT work, and the energy of cell panel is transported to electrical network by DC/AC.When DC/DC does not export or when energy is inadequate, DC/AC then proceeds to constant current mode, and now DC/AC input is provided jointly by energy-storage battery and DC/DC, and the changed power fluctuation of such DC/AC output can be smaller, reaches the purpose of smooth photovoltaic output.When at night when, photovoltaic battery panel does not has energy, can be charged energy-storage battery by AC/DC, be discharged by DC/AC during peak of power consumption again, and reach to disappear peak load or the effect with other electricity mutual complementations such as wind energy.
3) effect of energy-storage battery is to be charged when photovoltaic cell output energy is too much, carries out work of discharging when photovoltaic cell energy is inadequate.It is monitored by energy-storage battery by battery manager, detects the information of battery constantly and sends DC/DC and DC/AC to by CAN communication.When energy-storage battery occurs overcharging or all cross and puts, the state of energy-storage battery can send DC/DC and DC/AC to by CAN communication and carry out dropping power or shutdown processes.
The effect of communication module is mutually to tell the other side the mode of operation of DC/DC, DC/AC, and receives the battery information of energy-storage battery.
In sum, the present invention solves conventional photovoltaic power station generating capacity and does not mates with fan-out capability, the problem of upper network electric energy quality difference under different weather environmental effect；The present invention uses exploitation DC side energy storage mode, on the premise of not increasing unit cost of electricity-generating, contrasts centralized energy storage and improves power transmission and transformation efficiency, improve the input electrical network quality of power supply, for breaking new forms of energy at electrical network electric energy 15% bottleneck, does useful experiment；The present invention increases photovoltaic plant battery component generator unit loading amount, generating curve peak value surmounts power transmission and transformation power curve, the generated output exceeded receives in inverter direct-flow side DC/DC energy storage, compensates less than power transmission and transformation power curve energy storage release, forms similar water power, thermoelectricity firm power generating curve.The present invention balances the fluctuation of solar energy by the method for energy storage, enables the power of combining inverter steadily to export, and reduces the harm to operation of power networks.The present invention by the Demonstration Application of DC side light-preserved system, improves electrical network to the digestion capability of extensive clean energy resource and power system safety and stability level, lays a solid foundation for country's supporting plan " wind, light, water, gas " complemental power-generation cooperation.The present invention, except the electricity more than needed of power grid wind of can dissolving again, reaches scene or the effect of other electricity mutual complementation, can replace the peak-frequency regulation function of fired power generating unit on long terms.Reduce thermoelectricity proportioning, save energy domination.
Those skilled in the art of the present technique it is understood that unless otherwise defined, all terms used herein (including technical term and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Should also be understood that those terms defined in such as general dictionary should be understood that have the meaning consistent with the meaning in the context of prior art, and unless defined as here, will not explain by idealization or the most formal implication.
Above example is only the technological thought that the present invention is described, it is impossible to limiting protection scope of the present invention with this, every technological thought proposed according to the present invention, any change done on the basis of technical scheme, within each falling within scope.Above in conjunction with accompanying drawing, embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to make a variety of changes on the premise of or else departing from present inventive concept.
Claims (5)
- null1. an electrical network intelligent control system based on the energy storage of photovoltaic DC side，It is characterized in that: inclusion region mains network，And the dispatching of power netwoks control system being connected with region mains network respectively、Other power supply and multiple photovoltaic plant，Described photovoltaic plant comprises photovoltaic generation unit、Energy-storage units、Power transmission unit、Electrical network intelligent control subsystem、Energy storage battery、Charge-discharge control unit、Two-way photovoltaic DC-to-AC converter、Step transformer、Electrical network、Electrical network intelligent control subsystem，Described electrical network intelligent control subsystem comprises centralized intelligence regulator system and energy adjustmenting management system，Described photovoltaic generation unit、Energy-storage units、Power transmission unit、Electrical network is sequentially connected with，Described energy storage battery is connected with energy-storage units by charge-discharge control unit，Described two-way photovoltaic DC-to-AC converter is connected with power transmission unit by step transformer，Described electrical network intelligent control subsystem respectively with energy-storage units、Output unit and electrical network connect.
- A kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side the most according to claim 1, it is characterised in that: described centralized intelligence control unit is connected with charge-discharge control unit, two-way photovoltaic DC-to-AC converter and dispatching of power netwoks control system respectively through RS485 or TP/IP ethernet communication.
- A kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side the most according to claim 1, it is characterised in that: described photovoltaic generation unit comprises the photovoltaic cell plate array and photovoltaic combiner box being sequentially connected with.
- A kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side, it is characterized in that: electrical network intelligent control system is to combine existing power grid regulation mode and control principle, fully allocate photovoltaic electric energy by each photovoltaic regulator system.
- A kind of electrical network intelligent control system based on the energy storage of photovoltaic DC side, it is characterised in that: described two-way photovoltaic DC-to-AC converter uses the two-way photovoltaic DC-to-AC converter of Huawei SUN2000 series.
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| CN107579698A (en) * | 2017-10-03 | 2018-01-12 | 常州工学院 | A kind of photovoltaic plant energy storage method |
| CN108667042A (en) * | 2017-04-01 | 2018-10-16 | 周锡卫 | A kind of the generation of electricity by new energy inverter and system of the regulation and control that are suitable for linking |
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