CN102355023A - Light-storage type EV (electric vehicle) charging and converting station - Google Patents
Light-storage type EV (electric vehicle) charging and converting station Download PDFInfo
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- CN102355023A CN102355023A CN2011103021434A CN201110302143A CN102355023A CN 102355023 A CN102355023 A CN 102355023A CN 2011103021434 A CN2011103021434 A CN 2011103021434A CN 201110302143 A CN201110302143 A CN 201110302143A CN 102355023 A CN102355023 A CN 102355023A
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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 provides a light-storage type EV (electric vehicle) charging and converting station, belonging to the field of power supply systems. The station is used for solving the problems caused by taking an alternating current power grid as a power supply source in the existing EV charging and converting station. The light-storage type EV charging and converting station comprises a photovoltaic generating system, a storage battery energy accumulation system, an EV charging station and a station-used load, wherein the photovoltaic generating system comprises a solar battery assembly, a grid connected inverter and a photovoltaic power supply management system, and is suspended on a power supply bus of the photovoltaic system; the storage battery energy accumulation system comprises a storage battery pack, a battery management system and a dual-direction inverter, and is suspended on a power supply bus of the load; the EV charging and converting station and the station-used load are suspended on the power supply load of the load; and the power supply bus of the photovoltaic system and the power supply bus of the load are respectively connected with a 380V bus in the alternating current power grid, and are connected by a photovoltaic access breaker.
Description
Technical field
The present invention relates to light storage formula electric automobile and fill electrical changing station, belong to the electric power system field.
Background technology
At present, countries such as the U.S., Japan, Israel, France, Britain have all begun to build charging electric vehicle facility separately, and mainly to be charged as the master, wherein the U.S., Israel are carrying out related work aspect electrical changing station.State Grid Corporation of China has proposed the principle of " it is main changing electricity, insert fill be to assist, concentrate charging, unified dispensing " the pattern to charging electric vehicle in 2010.2011, State Grid Corporation of China built up the first electric automobile intelligence of China and fills and change electric service network in Zhejiang, also was that the intercity interconnected electric automobile intelligence of first in the world realization is filled and changed electric service network, and the electrical changing station of China has been walked the leading position in the world.
Therefore construction is filled electrical changing station intelligence and is filled the most important thing of changing electric service network; And the clean reproducible energy generating is the important means that solves energy problem; Become the our times development trend; Therefore electric automobile is filled the electrical changing station construction and combine the clean reproducible energy generating; The i.e. pattern of " clean reproducible energy generating → energy storage → fill and change "; This pattern not only can reduce electric automobile and fill and change electricity to the impact of electrical network; Clean environment firendly more; And can be in the remote districts construction that the electrical network condition does not possess; Or on long-distance highway as the emergent charging facility; Therefore this pattern is filled the research of electrical changing station and is built promoting the application of electric automobile; Building energy saving and environment friendly society has significance, and boundless application prospect will be arranged.
Current, it is power supply source with the AC network that electric automobile fills electrical changing station, has following problem: one, nervous because of the national grid resource, therefore relying on national grid fully can increase burden to country; Two, present, electric automobile charging station scarcely disposes batteries, when grid power blackout, can't charge for electric automobile; Though and the electric automobile electrical changing station disposes a large amount of batteries, the electric automobile that when grid power blackout, can satisfy to a certain degree changes electric demand, when electrical network has a power failure for a long time, just can't satisfy electric automobile and change electric demand.
Summary of the invention
The present invention seeks to that to fill electrical changing station be the problem that power supply source exists with the AC network in order to solve existing electrical automobile: one, nervous because of the national grid resource, therefore relying on national grid fully can increase burden to country; Two, present, electric automobile charging station scarcely disposes batteries, when grid power blackout, can't charge for electric automobile; Though and the electric automobile electrical changing station disposes a large amount of batteries, when grid power blackout, the electric automobile that can satisfy to a certain degree changes electric demand, when electrical network has a power failure for a long time, just can't satisfy electric automobile and change electric demand.
Light storage formula electric automobile according to the invention fills electrical changing station; It comprises photovoltaic generating system, batteries to store energy system, electric automobile charging station, stand and insert circuit breaker, solar module circuit breaker and batteries circuit breaker be incorporated into the power networks circuit breaker, load circuit breaker, photovoltaic of load, main circuit breaker, photovoltaic system
Said photovoltaic generating system comprises solar module, combining inverter and photovoltaic power supply management system; The output of photovoltaic power supply management system links to each other with the control end of solar module; The dc output end of solar module links to each other with the direct-flow input end of combining inverter; The ac output end of combining inverter links to each other with an end of solar module circuit breaker, and the other end of solar module circuit breaker is articulated on the photovoltaic system power supply buses;
Said batteries to store energy system comprises batteries, battery management system and two-way inverter; The output of battery management system links to each other with the control end of batteries; The electric energy input/output terminal of batteries links to each other with an end of two-way inverter; The other end of two-way inverter links to each other with an end of batteries circuit breaker, and the other end of batteries circuit breaker is articulated on the load power supply buses;
Electric automobile charging station all is articulated on the load power supply buses with load with the station;
Said photovoltaic system power supply buses links to each other with the 380V bus that AC network is divided into through the photovoltaic system circuit breaker that is incorporated into the power networks,
Said load power supply buses links to each other with the 380V bus that AC network is divided into through the load circuit breaker,
Insert circuit breaker through photovoltaic between said photovoltaic system power supply buses and the said load power supply buses and link to each other,
Between AC network and the said 380V bus main circuit breaker is set.
Advantage of the present invention: light storage formula electric automobile according to the invention fills electrical changing station can be realized the charge mode of accumulator of electric car and change power mode.The present invention has well solved in the generation of electricity by new energy, and photovoltaic generation is with charging electric vehicle and change the problem that electricity combines.Its extensive application can be alleviated the nervous present situation of national grid, and guarantees when the normal operation of electrical network is broken down with electrical network, charging electric vehicle work and change carrying out smoothly of electrician's work.
Light storage formula electric automobile fills electrical changing station provides electric power through photovoltaic generating system; The used for electric vehicle storage battery is as energy-storage units; Whole system is incorporated urban power distribution network into; Both can realize charging electric vehicle, change electric needs; Can emergency power supply be provided for power distribution network again; Simultaneously because the cushioning effect of batteries to store energy system has reduced the influence of the fluctuation of photovoltaic generation to electrical network.
Description of drawings
Fig. 1 fills the structural representation of electrical changing station for light storage formula electric automobile;
Fig. 2 is the structural representation of photovoltaic generating system;
Fig. 3 is the structural representation of batteries to store energy system;
Fig. 4 is that light storage formula electric automobile fills electrical changing station and is in lonely net, the switched system sketch map when being incorporated into the power networks;
Fig. 5 is at solar radiation and the energy Flow sketch map when bright and clear, and the energy that solar module sends with the load power supply, is the batteries energy storage to charging station and station simultaneously, and unnecessary electric power is sent into electrical network;
Fig. 6 is having solar radiation; But the not enough charging station of output energy of solar module and station use load to use the output energy of the output energy of solar module and batteries close enough the energy Flow sketch map when charging station and station using with load, batteries and solar module are simultaneously to charging station and stand and with loading energy is provided at this moment;
Fig. 7 is having solar radiation; But the output energy of solar module and batteries close not enough charging station and the station energy Flow sketch map when using with load, this moment, batteries, solar module and AC network provided energy to charging station and station with loading simultaneously;
Fig. 8 is having solar radiation; But use with load at the not enough charging station of output energy of solar module and station; And the energy Flow sketch map when batteries can't be exported energy, this moment, AC network also provided energy to charging station and station with load, and batteries begins energy storage simultaneously;
Fig. 9 be all the time according to or solar module output be not enough to the energy Flow sketch map when charging station and station provide energy with load; Supplied power with load to charging station and station by the single energy of batteries, the prerequisite of this operational mode is that the output energy of batteries can satisfy the demands;
Figure 10 be all the time according to or solar module output be not enough to the energy Flow sketch map when charging station and station provide energy with load; Supplied power with load to charging station and station by the single energy of AC network, the prerequisite of this operational mode is that batteries can't be exported energy;
Figure 11 be all the time according to or solar module output be not enough to loading energy is provided to charging station and station; And the energy Flow sketch map when the output energy of batteries also can't satisfy the demands, this moment, AC network provided energy to charging station and station with load.
Embodiment
Embodiment one: below in conjunction with this execution mode of Fig. 1 to 11 explanation; The said light storage of this execution mode formula electric automobile fills electrical changing station; It comprises photovoltaic generating system, batteries to store energy system, electric automobile charging station 6, stand and insert circuit breaker 11, solar module circuit breaker 12 and batteries circuit breaker 13 be incorporated into the power networks circuit breaker 9, load circuit breaker 10, photovoltaic of load 7, main circuit breaker 8, photovoltaic system
Said photovoltaic generating system comprises solar module 1, combining inverter 2 and photovoltaic power supply management system 14; The output of photovoltaic power supply management system 14 links to each other with the control end of solar module 1; The dc output end of solar module 1 links to each other with the direct-flow input end of combining inverter 2; The ac output end of combining inverter 2 links to each other with an end of solar module circuit breaker 12, and the other end of solar module circuit breaker 12 is articulated on the photovoltaic system power supply buses;
Said batteries to store energy system comprises batteries 3, battery management system 4 and two-way inverter 5; The output of battery management system 4 links to each other with the control end of batteries 3; The electric energy input/output terminal of batteries 3 links to each other with an end of two-way inverter 5; The other end of two-way inverter 5 links to each other with an end of batteries circuit breaker 13, and the other end of batteries circuit breaker 13 is articulated on the load power supply buses;
Electric automobile charging station 6 all is articulated on the load power supply buses with load 7 with the station;
Said photovoltaic system power supply buses links to each other with the 380V bus that AC network is divided into through the photovoltaic system circuit breaker 9 that is incorporated into the power networks,
Said load power supply buses links to each other with the 380V bus that AC network is divided into through load circuit breaker 10,
Between AC network and the said 380V bus main circuit breaker 8 is set.
Photovoltaic generating system is selected the scheme that is incorporated into the power networks of decentralized for use; Decentralized and net mode are the roofs that the small-sized combining inverter of selection outdoor is installed in the building; The direct current that photovoltaic module is produced directly becomes the 380V alternating current, incorporates power distribution network into after then the AC side of every small-sized inverter being confluxed.
Define the microgrid system below, the microgrid system comprises that photovoltaic generating system, batteries to store energy system, electric automobile charging station 6 and station are with load 7 in this execution mode.
The microgrid system works is at the lonely net and the two states that is incorporated into the power networks.
During said lonely network operation state, when sunny, be the power supply of whole station daytime by photovoltaic generating system; Not enough at sunlight, when the photovoltaic generation deficiency is thought the power supply of whole station, for whole station electric energy is provided jointly by batteries to store energy system and photovoltaic system.When night, for whole station electric energy is provided separately by the batteries to store energy system.
Said being incorporated into the power networks during state when sunny, is the power supply of whole station by photovoltaic generating system daytime; When sunlight is not enough, when the photovoltaic generation deficiency is thought the power supply of whole station, be the power supply of whole station by photovoltaic generating system and electrical network.When night, be that whole station provides electric energy by electrical network.
Said electric automobile charging station 6 is the electrically-charging equipments that provide fast, charge at a slow speed for electric automobile.
The said light storage of this execution mode formula electric automobile fills between each parts of electrical changing station and exists energy Flow, has seven kinds of patterns.These seven kinds of patterns are mainly carried out according to intensity of illumination, charging station and the station energy storage condition with payload, storage battery:
Pattern 1: referring to Fig. 5, in solar radiation and when bright and clear, the energy that solar module sends with the load power supply, is the batteries energy storage to charging station and station simultaneously, and unnecessary electric power is sent into electrical network;
Pattern 2: referring to Fig. 6; Solar radiation is being arranged; Closing enough of the output energy of the output energy of solar module and batteries used with load as charging station and station but the not enough charging station of output energy of solar module and station use load to use, and this moment, batteries and solar module provided energy to charging station and station with load simultaneously;
Mode 3: referring to Fig. 7; Solar radiation is being arranged; But the output energy of solar module and batteries close not enough charging station and station when using with load, this moment, batteries, solar module and AC network provided energy to charging station and station with loading simultaneously;
Pattern 4: referring to Fig. 8; Solar radiation is being arranged; But use with load at the not enough charging station of output energy of solar module and station; And the energy Flow sketch map when batteries can't be exported energy; This moment, AC network also provided energy to charging station and station with load, and batteries begins energy storage simultaneously;
Pattern 6: referring to Figure 10; All the time according to or solar module output be not enough to when charging station and station provide energy with loading; Supplied power with load to charging station and station by the single energy of AC network, the prerequisite of this operational mode is that batteries can't be exported energy;
Mode 7: referring to Figure 11, all the time according to or solar module output be not enough to load energy is provided to charging station and station, and the output energy of batteries be also can't satisfy the demands the time, this moment, AC network provided energy to charging station and station with loading.
Embodiment two: this execution mode further specifies execution mode one; It also comprises monitoring system system 15; Monitoring system system 15 is articulated on the load power supply buses, and monitoring system system 15 comprises power supply monitoring system, charging monitoring system, electric energy quality monitoring system and video monitoring system
Said power supply monitoring system is used to monitor the ruuning situation of electric power system, comprises showing the electric power system main electrical scheme, and electric parameters such as detection power, electric weight and electric current, said electric power system comprises photovoltaic generating system and AC network;
The charge information of said charging monitoring system monitoring accumulator of electric car, charged state, charging clearing situation;
Said electric energy quality monitoring system is used to monitor the quality of power supply, monitoring current resultant distortion rate, voltage resultant distortion rate, each primary current aberration rate and each time voltage distortion;
Said video monitoring system is used to monitor the security situation of electric automobile charging station 6, through camera electric automobile charging station 6 is kept watch on.
Electric power system is mainly charging device power supply is provided, and simultaneously also for stations such as supervisory control system, illumination provide power supply with load, is the basis of whole charging station operation.Electric power system is responsible for whole charging station on the one hand power supply is provided, and is responsible for giving the interchange stake that power supply is provided on the other hand.The output of photovoltaic generating system inserts this power distribution cabinet, for AC electrical vehicle charging station provides electric power.Electric power system is by electrical network and photovoltaic generating system power supply.The core of charging system electric automobile charging station comprises facilities such as charging cabinet, electric automobile charging station and circuit.Electric automobile charging station is the electrically-charging equipment that provides fast, charges at a slow speed for electric automobile.Electric automobile charging station comprises direct current drive vehicle charging station and AC electrical vehicle charging station.Supervisory control system is the safeguards system that light storage formula electric automobile fills the electrical changing station safe operation.
Embodiment three: this execution mode is described below in conjunction with Fig. 3; This execution mode further specifies execution mode one, and battery management system 4 utilizes temperature sensor to gather the temperature signal of batteries 3, utilizes Hall element to gather the current signal and the voltage signal of batteries 3; According to the dump energy of the signal estimation batteries 3 of gathering, when the too low or too high for voltage or temperature of batteries 3 is too high, report to the police; The energy of 4 pairs of batteries 3 of battery management system carries out equilibrium, guarantees the consistency of each the cell electric weight in the batteries 3; Battery management system 4 sends to photovoltaic power supply management system 14 with the information of batteries 3 through 485 buses or CAN bus.
Claims (3)
1. light storage formula electric automobile fills electrical changing station; It is characterized in that; It comprises photovoltaic generating system, batteries to store energy system, electric automobile charging station (6), stand and insert circuit breaker (11), solar module circuit breaker (12) and batteries circuit breaker (13) be incorporated into the power networks circuit breaker (9), load circuit breaker (10), photovoltaic of load (7), main circuit breaker (8), photovoltaic system
Said photovoltaic generating system comprises solar module (1), combining inverter (2) and photovoltaic power supply management system (14); The output of photovoltaic power supply management system (14) links to each other with the control end of solar module (1); The dc output end of solar module (1) links to each other with the direct-flow input end of combining inverter (2); The ac output end of combining inverter (2) links to each other with an end of solar module circuit breaker (12), and the other end of solar module circuit breaker (12) is articulated on the photovoltaic system power supply buses;
Said batteries to store energy system comprises batteries (3), battery management system (4) and two-way inverter (5); The output of battery management system (4) links to each other with the control end of batteries (3); The electric energy input/output terminal of batteries (3) links to each other with an end of two-way inverter (5); The other end of two-way inverter (5) links to each other with an end of batteries circuit breaker (13), and the other end of batteries circuit breaker (13) is articulated on the load power supply buses;
Electric automobile charging station (6) and station all are articulated on the load power supply buses with load (7);
Said photovoltaic system power supply buses links to each other with the 380V bus that AC network is divided into through the photovoltaic system circuit breaker (9) that is incorporated into the power networks,
Said load power supply buses links to each other with the 380V bus that AC network is divided into through load circuit breaker (10),
Insert circuit breaker (11) through photovoltaic between said photovoltaic system power supply buses and the said load power supply buses and link to each other,
Between AC network and the said 380V bus main circuit breaker (8) is set.
2. fill electrical changing station according to the said light storage of claim 1 formula electric automobile; It is characterized in that; It also comprises monitoring system system (15); Monitoring system system (15) is articulated on the load power supply buses; Monitoring system system (15) comprises power supply monitoring system, charging monitoring system, electric energy quality monitoring system and video monitoring system
Said power supply monitoring system is used to monitor the ruuning situation of electric power system, comprises showing the electric power system main electrical scheme, and electric parameters such as detection power, electric weight and electric current, said electric power system comprises photovoltaic generating system and AC network;
The charge information of said charging monitoring system monitoring accumulator of electric car, charged state, charging clearing situation;
Said electric energy quality monitoring system is used to monitor the quality of power supply, monitoring current resultant distortion rate, voltage resultant distortion rate, each primary current aberration rate and each time voltage distortion;
Said video monitoring system is used to monitor the security situation of electric automobile charging station (6), through camera electric automobile charging station (6) is kept watch on.
3. fill electrical changing station according to the said light storage of claim 1 formula electric automobile; It is characterized in that battery management system (4) utilizes temperature sensor to gather the temperature signal of batteries (3), utilizes Hall element to gather the current signal and the voltage signal of batteries (3); According to the dump energy of the signal estimation batteries (3) of gathering, when the too low or too high for voltage or temperature of batteries (3) is too high, report to the police; Battery management system (4) carries out equilibrium to the energy of batteries (3), guarantees the consistency of each the cell electric weight in the batteries (3); Battery management system (4) sends to photovoltaic power supply management system (14) with the information of batteries (3) through 485 buses or CAN bus.
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