CN103414202B - The management method of the management system of the electric automobile battery replacing station in a kind of microgrid - Google Patents

The management method of the management system of the electric automobile battery replacing station in a kind of microgrid Download PDF

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Publication number
CN103414202B
CN103414202B CN201310303407.7A CN201310303407A CN103414202B CN 103414202 B CN103414202 B CN 103414202B CN 201310303407 A CN201310303407 A CN 201310303407A CN 103414202 B CN103414202 B CN 103414202B
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grid
micro
station
battery
battery altering
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CN103414202A (en
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张乐平
张明明
董旭柱
郭晓斌
林伟斌
许爱东
赖宇阳
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Research Institute of Southern Power Grid Co Ltd
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Research Institute of Southern Power Grid Co Ltd
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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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/12—Remote or cooperative charging

Abstract

The present invention is management system and the management method of electric automobile battery replacing station in a kind of microgrid.Described management system comprises grid management systems, energy management system of micro-grid, battery altering station supervisory control system, energy management system of micro-grid manages each equipment in micro-grid system or user, and accept the dispatching management of grid management systems, and energy management system of micro-grid carries out Long-distance Control to grid-connected switch, send to grid-connected switch grid-connected/from net instruction, energy management system of micro-grid and battery altering station supervisory control system carry out both-way communication, manage the energy exchange of battery altering station and microgrid.When battery altering station enters different operational mode with micro-grid system running status, the charger in battery altering station enters relevant work pattern, and battery altering station supervisory control system will start the corresponding function module.Management method of the present invention realizes the flexible switching of battery altering station operational mode, grid-connected and provide support from the different demands under network operation mode to micro-grid system.

Description

The management method of the management system of the electric automobile battery replacing station in a kind of microgrid
Technical field
The present invention is management system and the management method of electric automobile battery replacing station in a kind of microgrid, belongs to the management system of the electric automobile battery replacing station in microgrid and the innovative technology of management method.
Background technology
AC charging, DC charging and battery altering are several principal modes of electric automobile energy supply.Battery altering can complete in several minutes, was effective solution route of reply electric automobile insufficient driving range problem.Electric automobile battery replacing station is the website for electric automobile provides battery altering to serve, and the battery after replacing carries out concentrating charging in station.Compared to charge mode, the charging load of dispersion is assembled by battery altering station, is more conducive to electrical network and manages charging electric vehicle load, is more conducive to the planning construction of distribution network simultaneously.
Development distributed power source has listed country's " 12 " development plan in.At present, China's renewable energy power generation concentrates access for principal mode with extensive, remote, proposes higher requirement to the transmission line capability of electrical network, peak regulation/fm capacity.Distribution type renewable energy generating is grid-connected by power distribution network, gos deep into load center, and can realize local autonomous management, compared to centralized access, be more conducive to the optimizing operation of electrical network.Microgrid is the fine mode of distributed power source application, and it can adopt grid-connected or run from net mode.When the power supply in microgrid with wind power/photovoltaic generating for time main, its uncertainty of exerting oneself and fluctuation will make microgrid run there is the problem such as stability, the quality of power supply.
Electric automobile battery replacing station is configured with the battery of some, therefore possesses certain energy storage capacity.Electric automobile battery replacing station is grid-connected by low and medium voltage distribution network, and the operation that can be microgrid controls to provide support.Dynamic adjustments can be carried out to the discharge and recharge of battery in station in battery altering station, participates in meritorious, the idle control of micro-grid system.Battery altering station and the combination being microgrid, not only control significant to the operation of microgrid, can also play the effect at battery altering station greatly, promote the development of ev industry.
Summary of the invention
The object of the invention is to the operation demand for control for microgrid, the management system of the electric automobile battery replacing station in a kind of microgrid is provided.The present invention, while providing for electric automobile battery altering to serve, plays energy storage effect and the fast response characteristic of electrokinetic cell, realizes optimization and the stable operation of micro-grid system, and the value-added service that improve battery altering station is worth.And the present invention has given full play to the effect at battery altering station, improves the level of resources utilization, there is flexible, that reliable, automaticity is high feature.
The management method of the management system of the electric automobile battery replacing station provided in a kind of microgrid is provided.The present invention realizes the flexible switching of battery altering station operational mode, grid-connected and provide support from the different demands under network operation mode to micro-grid system.
Technical scheme of the present invention is: the management method of the management system of the electric automobile battery replacing station in microgrid of the present invention, the management system of the electric automobile battery replacing station in described microgrid includes grid management systems, energy management system of micro-grid, battery altering station supervisory control system, energy management system of micro-grid manages each equipment in micro-grid system or user, and accept the dispatching management of grid management systems, and energy management system of micro-grid carries out Long-distance Control to grid-connected switch, send to grid-connected switch grid-connected/from net instruction, energy management system of micro-grid and battery altering station supervisory control system carry out both-way communication, the energy exchange of battery altering station and microgrid is managed,
When battery altering station enters different operational mode with micro-grid system running status, the charger in battery altering station enters relevant work pattern, and battery altering station supervisory control system will start the corresponding function module; The operational mode at above-mentioned battery altering station includes three kinds: 1) do not control pattern: electrical changing station charges immediately to the battery changed, until Full Charge Capacity; 2) auxiliary mode: the active power that battery electrical changing station is assigned according to energy management system of micro-grid and reactive power instruction carry out charge and discharge control to the battery case in electrical changing station; 3) contingency mode: battery altering station powers to micro-grid system as main power source, maintains system voltage and frequency stabilization;
When micro-grid system is from network operation, battery altering station enters contingency mode; When micro-grid system is incorporated into the power networks, if micro-grid system assigns power control command to battery altering station, now battery altering station enters auxiliary mode, otherwise according to not controlling mode operation;
The mode of operation of above-mentioned charger includes three kinds: 1) Passive Mode: charger carries out work under the control of the battery management system (bms) (BMS) of battery case; 2) aggressive mode: each charger is according to meritorious/idle command value P k, Q kmodulate; 3) adaptive model: charger adopts droop control to carry out from dynamic response system frequency f, voltage V.
Under above-mentioned not control pattern, micro-grid system is in and net state, and fill/change electric monitoring of tools module in the supervisory control system of described battery altering station and be in starting state, each charger is in Passive Mode
Under above-mentioned auxiliary mode, micro-grid system is in and net state, electric monitoring of tools module is filled/changed to described battery altering station supervisory control system, vehicle arriving rate prediction module, controlled volume calculation module, coordinated allocation module all start, the charger being retained the corresponding station of rechargeable battery case is in Passive Mode, and all the other chargers participating in the corresponding station of regulation and control battery case start aggressive mode;
Under above-mentioned adaptive model, micro-grid system is in from net state, and described change station supervisory control system is filled/changed electric monitoring of tools module and is in starting state, and in standing, each charger starts adaptive model.
The present invention realizes the flexible switching of battery altering station operational mode, grid-connected and provide support from the different demands under network operation mode to micro-grid system.While providing for electric automobile battery altering to serve, play energy storage effect and the fast response characteristic of electrokinetic cell, realize optimization and the stable operation of micro-grid system, the value-added service that improve battery altering station is worth.The present invention has given full play to the effect at battery altering station, improves the level of resources utilization, has flexible, that reliable, automaticity is high feature.
Accompanying drawing explanation
Fig. 1 be the electric automobile battery replacing station of the embodiment of the present invention and micro-grid system electrically and the schematic diagram of communication structure.
Fig. 2 is the schematic diagram of electric automobile battery replacing station supervisory control system functional module of the present invention.
Fig. 3 is the control flow schematic diagram of electric automobile battery replacing station of the present invention in micro-grid system.
Embodiment
Embodiment:
Structural representation of the present invention as shown in Figure 1, the management system of the electric automobile battery replacing station in microgrid of the present invention, comprise grid management systems, energy management system of micro-grid, battery altering station supervisory control system, energy management system of micro-grid manages each equipment in micro-grid system or user, and accept the dispatching management of grid management systems, and energy management system of micro-grid carries out Long-distance Control to grid-connected switch, send to grid-connected switch grid-connected/from net instruction, energy management system of micro-grid and battery altering station supervisory control system carry out both-way communication, the energy exchange of battery altering station and microgrid is managed.
Above-mentioned when battery altering station enters different operational mode with micro-grid system running status, the charger in battery altering station enters relevant work pattern, and battery altering station supervisory control system will start the corresponding function module.
The management method of the management system of the electric automobile battery replacing station in microgrid of the present invention, when battery altering station enters different operational mode with micro-grid system running status, charger in battery altering station enters relevant work pattern, and battery altering station supervisory control system will start the corresponding function module; The operational mode at above-mentioned battery altering station includes three kinds: 1) do not control pattern: electrical changing station charges immediately to the battery changed, until Full Charge Capacity; 2) auxiliary mode: the active power that battery electrical changing station is assigned according to energy management system of micro-grid and reactive power instruction carry out charge and discharge control to the battery case in electrical changing station; 3) contingency mode: battery altering station powers to micro-grid system as main power source, maintains system voltage and frequency stabilization.
Above-mentioned when micro-grid system is from network operation, battery altering station enters contingency mode; When micro-grid system is incorporated into the power networks, if micro-grid system assigns power control command to battery altering station, now battery altering station enters auxiliary mode, otherwise according to not controlling mode operation.
Under above-mentioned not control pattern, micro-grid system is in and net state, and fill/change electric monitoring of tools module in the supervisory control system of described battery altering station and be in starting state, each charger is in Passive Mode.
Under above-mentioned auxiliary mode, micro-grid system is in and net state, electric monitoring of tools module is filled/changed to described battery altering station supervisory control system, vehicle arriving rate prediction module, controlled volume calculation module, coordinated allocation module all start, the charger being retained the corresponding station of rechargeable battery case is in Passive Mode, and all the other chargers participating in the corresponding station of regulation and control battery case start aggressive mode.
The mode of operation of above-mentioned charger includes three kinds: 1) Passive Mode: charger carries out work under the control of the battery management system (bms) (BMS) of battery case; 2) aggressive mode: each charger is according to meritorious/idle command value P k, Q kmodulate; 3) adaptive model: charger adopts droop control to carry out from dynamic response system frequency f, voltage V.
Under above-mentioned adaptive model, micro-grid system is in from net state, and described change station supervisory control system is filled/changed electric monitoring of tools module and is in starting state, and in standing, each charger starts adaptive model.
The functional module of above-mentioned battery altering station supervisory control system comprises: 1) fill/change electric monitoring of tools module, 2) vehicle arriving rate prediction module, 3) controlled volume calculation module, 4) coordinated allocation module;
Wherein, vehicle arriving rate prediction module is by the service vehicle quantity λ (t of subsequent period i) Δ T is sent to controlled volume calculation module;
The pre-estimation block of controlled capacity is according to prediction data and each battery case state-of-charge SOC filling/change the transmission of electric monitoring of tools module k, from high to low each battery case is sorted, sorts at front λ (t i) Δ T battery case conveniently charge mode retain charging, the individual battery case of all the other N ' participates in regulation and control, the pre-estimation block of described controlled capacity, according to the dump energy of N ' individual participation regulation and control battery case, is estimated the charge/discharge capacity of electrical changing station entirety, will estimate the forward power P obtained +and duration T +, backward power P -and duration T -be sent to energy management system of micro-grid;
Controlled capacity is by following various calculating: P + = Σ j = 1 N , ( 1 - SOC j ) 1 - min ( SOC 1 , SOC 2 . . . . . . SOC N , ) S r ,
P - = Σ j = 1 N , SOC j max ( SOC 1 , SOC 2 . . . . . . SOC N , ) S r , T + = Q [ 1 - min ( SOC 1 , SOC 2 . . . . . . SOC N , ) S r ,
T - = Q * max ( SOC 1 , SOC 2 . . . . . . SOC N , ) S r , S rfor the apparent power of charger, Q is single battery tankage;
Energy management system of micro-grid, according to the state of other equipment and user in electric system and operational objective, assigns battery altering station active power dispatching command P to coordinated allocation module bESand reactive power dispatching command Q bES;
Coordinated allocation module assigns instruction according to following rule to each charger: if P bES> 0, the active power instruction of each charger if P bES< 0, the active power instruction of each charger is the reactive power instruction of each charger Q k = S r 2 - P k 2 &Sigma; j = 1 N , S r 2 - P j 2 Q BES , S rfor the apparent power of charger;
The active power instruction P of each charger kand Q kto assign to each charger by filling/changing electric monitoring of tools module.
Above-mentioned energy management system of micro-grid manages each equipment in microgrid or user, and accept the dispatching management of grid management systems, energy management system of micro-grid carries out Long-distance Control to grid-connected switch, send to it grid-connected/from net instruction, energy management system of micro-grid and battery altering station supervisory control system carry out both-way communication, manage the energy exchange of battery altering station and microgrid.
The charging station at above-mentioned battery altering station is identical with battery case quantity, do not exist and provide and deliver with the battery of other websites, therefore in station, battery total amount remains unchanged, each battery case passes through standardized designs, its rated capacity, size are all identical, in standing, four limit work supported by charger, namely support meritorious, idle forward and reverse flowing.
In the present embodiment, Fig. 1 be electric automobile battery replacing station of the present invention and micro-grid system electrically and the schematic diagram of communication structure.As shown in Figure 1, battery altering station 101 comprises the battery case of some, and each battery case is by bidirectional charger access micro-grid system low-voltage bus bar, and distributed power source 102, load 103 and other equipment (user) 104 are also incorporated to this bus.Energy management system of micro-grid 20 manages each equipment intrasystem or user, and accepts the dispatching management of grid management systems 30.Energy management system of micro-grid 20 and battery altering station supervisory control system 10 carry out both-way communication, manage the discharge and recharge at battery altering station.Energy management system of micro-grid 20 carries out Long-distance Control to grid-connected switch 111, send to it grid-connected/from net instruction.
Fig. 2 is the schematic diagram of functional module in electric automobile battery replacing station supervisory control system of the present invention.As shown in Figure 2, the functional module of battery altering station supervisory control system 10 comprises: fill/change electric monitoring of tools module 01, vehicle arriving rate prediction module 02, controlled volume calculation module 03, coordinated allocation module 04.
Described battery altering station 101 has three kinds of operational modes: 1) do not control pattern: electrical changing station charges immediately to the battery changed, until Full Charge Capacity; 2) auxiliary mode: the active power that battery electrical changing station is assigned according to energy management system of micro-grid and reactive power instruction carry out charge and discharge control to the battery case in electrical changing station; 3) contingency mode: battery altering station powers to micro-grid system as main power source, maintains system voltage and frequency stabilization.
Described battery altering station supervisory control system 10 is under not control pattern, only start and fill/change electric monitoring of tools module 01, each charger works in Passive Mode, namely charger carries out work under the control of the battery management system (bms) (BMS) of battery case, and charge power is only subject to charger and holds quantitative limitation;
Described battery altering station supervisory control system 10, under auxiliary mode, starts and fills/change electric monitoring of tools module 01, vehicle arriving rate prediction module 02, controlled volume calculation module 03, coordinated allocation module 04.Vehicle arriving rate prediction module 02 is by the service vehicle quantity λ (t of subsequent period i) Δ T is sent to controlled volume calculation module 03.The pre-estimation block of described controlled capacity 03 is according to prediction data and each battery case state-of-charge SOC filling/change the transmission of electric monitoring of tools module 01 k, from high to low each battery case is sorted, sorts at front λ (t i) Δ T battery case conveniently charge mode retain charging, the individual battery case of all the other N ' participates in regulation and control.Described controlled volume calculation module 03, according to the dump energy of N ' individual participation regulation and control battery case, calculates the charge/discharge capacity of electrical changing station entirety, by the forward power P calculated +and duration T +, backward power P -and duration T -be sent to energy management system of micro-grid.Energy management system of micro-grid, according to the state of other equipment and user in electric system and operational objective, assigns battery altering station active power dispatching command P to coordinated allocation module 04 bESand reactive power dispatching command Q bES.Coordinated allocation module 04 calculates each charger active power instruction P according to allocation algorithm kand Q k, and assign to each charger by filling/changing electric monitoring of tools module 01.Now, each charger works in aggressive mode, namely each charger according to supervisory control system meritorious/idle command value P k, Q kcarry out output modulation.
Described battery altering station supervisory control system 10 in the emergency mode, only starts and fills/change electric monitoring of tools module 01.Each charger works in adaptive model, and namely charger adopts droop control to carry out dynamic response to system frequency, voltage.
Fig. 3 is the control flow schematic diagram of electric automobile battery replacing station of the present invention in micro-grid system.As shown in Figure 3, when micro-grid system is from network operation, battery altering station enters contingency mode; When micro-grid system is incorporated into the power networks, if micro-grid system assigns power control command to battery altering station, now battery altering station enters auxiliary mode, otherwise according to not controlling mode operation.

Claims (3)

1. the management method of the management system of the electric automobile battery replacing station in a microgrid, the management system of the electric automobile battery replacing station in described microgrid includes grid management systems, energy management system of micro-grid, battery altering station supervisory control system, energy management system of micro-grid manages each equipment in micro-grid system or user, and accept the dispatching management of grid management systems, and energy management system of micro-grid carries out Long-distance Control to grid-connected switch, send to grid-connected switch grid-connected/from net instruction, energy management system of micro-grid and battery altering station supervisory control system carry out both-way communication, the energy exchange of battery altering station and microgrid is managed,
It is characterized in that the charger in battery altering station enters relevant work pattern when battery altering station enters different operational mode with micro-grid system running status, battery altering station supervisory control system will start the corresponding function module; The operational mode at above-mentioned battery altering station includes three kinds: 1) do not control pattern: electrical changing station charges immediately to the battery changed, until Full Charge Capacity; 2) auxiliary mode: the active power that battery electrical changing station is assigned according to energy management system of micro-grid and reactive power instruction carry out charge and discharge control to the battery case in electrical changing station; 3) contingency mode: battery altering station powers to micro-grid system as main power source, maintains system voltage and frequency stabilization;
When micro-grid system is from network operation, battery altering station enters contingency mode; When micro-grid system is incorporated into the power networks, if micro-grid system assigns power control command to battery altering station, now battery altering station enters auxiliary mode, otherwise according to not controlling mode operation;
The mode of operation of above-mentioned charger includes three kinds: 1) Passive Mode: charger carries out work under the control of the battery management system (bms) (BMS) of battery case; 2) aggressive mode: each charger is according to meritorious/idle command value , modulate; 3) adaptive model: charger adopts droop control to carry out from dynamic response system frequency f, voltage V;
Under above-mentioned not control pattern, micro-grid system is in and net state, and fill/change electric monitoring of tools module in the supervisory control system of described battery altering station and be in starting state, each charger is in Passive Mode
Under above-mentioned auxiliary mode, micro-grid system is in and net state, electric monitoring of tools module is filled/changed to described battery altering station supervisory control system, vehicle arriving rate prediction module, controlled volume calculation module, coordinated allocation module all start, the charger being retained the corresponding station of rechargeable battery case is in Passive Mode, and all the other chargers participating in the corresponding station of regulation and control battery case start aggressive mode;
Under above-mentioned adaptive model, micro-grid system is in from net state, and described change station supervisory control system is filled/changed electric monitoring of tools module and is in starting state, and in standing, each charger starts adaptive model.
2. management method according to claim 1, it is characterized in that above-mentioned energy management system of micro-grid manages each equipment in microgrid or user, and accept the dispatching management of grid management systems, energy management system of micro-grid carries out Long-distance Control to grid-connected switch, send to it grid-connected/from net instruction, energy management system of micro-grid and battery altering station supervisory control system carry out both-way communication, manage the energy exchange of battery altering station and microgrid.
3. management method according to claim 1, it is characterized in that the charging station at above-mentioned battery altering station is identical with battery case quantity, do not exist and provide and deliver with the battery of other websites, therefore in station, battery total amount remains unchanged, each battery case passes through standardized designs, its rated capacity, size are all identical, and in standing, four limit work supported by charger, namely support meritorious, idle forward and reverse flowing.
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CN104241720A (en) * 2014-06-26 2014-12-24 许继电气股份有限公司 Charge control method for electromobile direct-current rapid charging station in microgrid
CN105303249A (en) * 2015-09-22 2016-02-03 湘潭大学 Method for charging/discharging electric vehicles based on voltage drop uncertainty of photovoltaic microgrid
CN105914754A (en) * 2016-02-04 2016-08-31 天津商业大学 System and method for improving electric energy quality by use of vehicle-mounted charger on vehicle
CN107305372B (en) * 2016-04-25 2020-06-19 岳秀兰 Electric automobile energy monitoring and supply network for remote monitoring of cloud computing network architecture
CN108407636B (en) * 2018-02-08 2021-11-12 国电南瑞科技股份有限公司 Local real-time optimization charging control method for electric automobile
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