CN103414202A - Management system and management method for electric vehicle battery replacement station in micro-grid - Google Patents
Management system and management method for electric vehicle battery replacement station in micro-grid Download PDFInfo
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- CN103414202A CN103414202A CN2013103034077A CN201310303407A CN103414202A CN 103414202 A CN103414202 A CN 103414202A CN 2013103034077 A CN2013103034077 A CN 2013103034077A CN 201310303407 A CN201310303407 A CN 201310303407A CN 103414202 A CN103414202 A CN 103414202A
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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]
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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
- 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
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Abstract
The invention relates to a management system and a management method for an electric vehicle battery replacement station in a microgrid. The management system comprises a power grid management system, a microgrid energy management system and a battery replacement station monitoring system, wherein the microgrid energy management system manages each device or user in the microgrid system and is connected with the scheduling management of the power grid management system, the microgrid energy management system remotely controls a grid-connected switch and sends a grid-connected/off-grid instruction to the grid-connected switch, and the microgrid energy management system is in bidirectional communication with the battery replacement station monitoring system and is used for managing the energy exchange between the battery replacement station and the microgrid. When the battery replacement station enters different operation modes along with the operation state of the microgrid system, a charger in the battery replacement station enters a corresponding working mode, and the battery replacement station monitoring system starts a corresponding functional module. The management method provided by the invention realizes flexible switching of the operation modes of the battery replacement station, and provides support for different requirements of the micro-grid system in grid-connected and off-grid operation modes.
Description
Technical field
The present invention is management system and the management method of the electric automobile battery replacing station in a kind of microgrid, belongs to the innovative technology of management system and the management method of the electric automobile battery replacing station in microgrid.
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, be effective solution route of reply electric automobile insufficient driving range problem.Electric automobile battery replacing station is that the website of battery altering service is provided for electric automobile, and the battery after replacing is concentrated charging in station.Than charge mode, the charging of dispersion load is assembled at the battery altering station, more is conducive to electrical network the electric vehicle charging electric loading is managed, and more is conducive to the planning construction of distribution network simultaneously.
The development distributed power source has been listed country's " 12 " development plan in.At present, China's renewable energy power generation take on a large scale, concentrate access to be principal mode at a distance, and transmission line capability, the peak regulation/fm capacity of electrical network proposed to higher requirement.The distribution type renewable energy generating is grid-connected by power distribution network, gos deep into load center, and can realize local autonomous management, than centralized access, more is conducive to the optimization operation of electrical network.Microgrid is the fine mode of distributed power source application, and it can adopt grid-connected or move from net mode.When the power supply in microgrid be take the wind power/photovoltaic generating when main, the uncertainty that it is exerted oneself and fluctuation will make the microgrid operation problems such as stability, the quality of power supply occur.
Electric automobile battery replacing station disposes 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 control that can be microgrid provides support.Dynamic adjustments can be carried out to discharging and recharging of the interior battery of standing in the battery altering station, participates in meritorious, the idle control of micro-grid system.The battery altering station be the combination of microgrid, not only the operation of microgrid is controlled significantly, can also bring into play greatly the effect at battery altering station, the development of promotion 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 is when providing the battery altering service for electric automobile, energy storage effect and the fast response characteristic of performance electrokinetic cell, realize optimization and the stable operation of micro-grid system, and the value-added service that has improved the battery altering station is worth.And the present invention has given full play to the effect at battery altering station, has improved the level of resources utilization, the characteristics of have flexibly, reliable, automaticity is high.
Another object of the present invention is to provide the management method of the management system of the electric automobile battery replacing station in a kind of microgrid.The present invention realizes the flexible switching of battery altering station operational mode, and different demands grid-connected to micro-grid system and under the network operation mode provide support.
Technical scheme of the present invention is: the management system of the electric automobile battery replacing station in microgrid of the present invention, include grid management systems, the microgrid EMS, battery altering station supervisory control system, the microgrid EMS manages each equipment or the user in micro-grid system, and accept the dispatching management of grid management systems, and the microgrid EMS is carried out Long-distance Control to grid-connected switch, to grid-connected switch, send grid-connected/from the net instruction, microgrid EMS and battery altering station supervisory control system are carried out both-way communication, energy exchange to battery altering station and microgrid manages.
The management method of the management system of the electric automobile battery replacing station in microgrid of the present invention, when the battery altering station enters different operational mode with the micro-grid system running status, charger in the battery altering station enters the 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 of changing, until Full Charge Capacity; 2) auxiliary mode: active power and reactive power instruction that the battery electrical changing station is assigned according to the microgrid EMS discharge and recharge control to the battery case in electrical changing station; 3) contingency mode: the battery altering station powers to micro-grid system as main power source, maintains system voltage and frequency stabilization.
The present invention realizes the flexible switching of battery altering station operational mode, and different demands grid-connected to micro-grid system and under the network operation mode provide support.When the battery altering service was provided for electric automobile, energy storage effect and the fast response characteristic of performance electrokinetic cell, realized optimization and the stable operation of micro-grid system, and the value-added service that has improved the battery altering station is worth.The present invention has given full play to the effect at battery altering station, has improved the level of resources utilization, the characteristics of have flexibly, reliable, automaticity is high.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the electric and communication structure of the electric automobile battery replacing station of the embodiment of the present invention and micro-grid system.
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, the microgrid EMS, battery altering station supervisory control system, the microgrid EMS manages each equipment or the user in micro-grid system, and accept the dispatching management of grid management systems, and the microgrid EMS is carried out Long-distance Control to grid-connected switch, to grid-connected switch, send grid-connected/from the net instruction, microgrid EMS and battery altering station supervisory control system are carried out both-way communication, energy exchange to battery altering station and microgrid manages.
Above-mentioned charger in the battery altering station enters the relevant work pattern when the battery altering station enters different operational mode with the micro-grid system running status, 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 the battery altering station enters different operational mode with the micro-grid system running status, charger in the battery altering station enters the 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 of changing, until Full Charge Capacity; 2) auxiliary mode: active power and reactive power instruction that the battery electrical changing station is assigned according to the microgrid EMS discharge and recharge control to the battery case in electrical changing station; 3) contingency mode: the battery altering station powers to micro-grid system as main power source, maintains system voltage and frequency stabilization.
Above-mentioned when micro-grid system during from network operation, the battery altering station enters contingency mode; When micro-grid system was incorporated into the power networks, if micro-grid system is assigned power control command to the battery altering station, now the battery altering station entered auxiliary mode, otherwise according to not controlling mode operation.
Under above-mentioned not control pattern, micro-grid system is in and net state, in the supervisory control system of described battery altering station, fills/changes electric monitoring of tools module and be in starting state, and each charger is in Passive Mode.
Under above-mentioned auxiliary mode, micro-grid system is in and net state, described battery altering station supervisory control system is filled/is changed electric monitoring of tools module, vehicle arrival rate prediction module, controlled volume calculation module, coordinated allocation module and all starts, the charger that is retained the corresponding station of rechargeable battery case is in Passive Mode, and all the other chargers that participate 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 replacing 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 arrival rate prediction module, 3) controlled volume calculation module, 4) the coordinated allocation module;
Wherein, vehicle arrival rate prediction module is by the service vehicle quantity λ (t of next period
i) Δ T is sent to controlled volume calculation module;
The pre-estimation block of controlled capacity is according to prediction data and fill/change each battery case state-of-charge SOC that electric monitoring of tools module sends
k, from high to low each battery case to be sorted, sequence is at front λ (t
i) battery case of Δ T retains charging according to the normal charge pattern, 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 the individual participation of N ' regulation and control battery case, estimates the charge/discharge capacity of electrical changing station integral body, the forward power P that estimation is obtained
+And duration T
+, backward power P
-And duration T
-Be sent to the microgrid EMS;
Controlled capacity is pressed following various calculating:
S
rFor the apparent power of charger, Q is the single battery tankage;
The microgrid EMS, according to state and the operational objective of other equipment and user in electric system, is assigned battery altering station active power dispatching command P to the coordinated allocation module
BESAnd reactive power dispatching command Q
BES
The coordinated allocation module is assigned 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
Apparent power for charger;
The active power instruction P of each charger
kAnd Q
kTo assign to each charger by filling/change electric monitoring of tools module.
Above-mentioned microgrid EMS manages each equipment or the user in microgrid, and accept the dispatching management of grid management systems, the microgrid EMS is carried out Long-distance Control to grid-connected switch, to it, send grid-connected/from the net instruction, microgrid EMS and battery altering station supervisory control system are carried out both-way communication, and the energy exchange of battery altering station and microgrid is managed.
The charging station at above-mentioned battery altering station is identical with battery case quantity, there do not is the battery dispensing with other websites, therefore in station, the battery total amount remains unchanged, each battery case passes through standardized designs, its rated capacity, size are all identical, in standing, charger is supported four limit work, namely supports meritorious, idle forward and reverse flowing.
In the present embodiment, Fig. 1 is the schematic diagram of the electric and communication structure of electric automobile battery replacing station of the present invention and micro-grid system.As shown in Figure 1, battery altering station 101 comprises the battery case of some, and each battery case accesses the micro-grid system low-voltage bus bar by bidirectional charger, and distributed power source 102, load 103 and other equipment (user) 104 also are incorporated to this bus.20 pairs of intrasystem each equipment of microgrid EMS or user manage, and accept the dispatching management of grid management systems 30.Microgrid EMS 20 is carried out both-way communication with battery altering station supervisory control system 10, and discharging and recharging of battery altering station managed.20 pairs of grid-connected switches 111 of microgrid EMS carry out Long-distance Control, to it, send grid-connected/from the 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 arrival 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 of changing, until Full Charge Capacity; 2) auxiliary mode: active power and reactive power instruction that the battery electrical changing station is assigned according to the microgrid EMS discharge and recharge control to the battery case in electrical changing station; 3) contingency mode: the 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, and namely charger carries out work under the control of the battery management system (bms) (BMS) of battery case, and charge power only is subject to the restriction of charger capacity;
Described battery altering station supervisory control system 10, under auxiliary mode, starts and fills/change electric monitoring of tools module 01, vehicle arrival rate prediction module 02, controlled volume calculation module 03, coordinated allocation module 04.Vehicle arrival rate prediction module 02 is by the service vehicle quantity λ (t of next period
i) Δ T is sent to controlled volume calculation module 03.The pre-estimation block 03 of described controlled capacity is according to prediction data and fill/change each battery case state-of-charge SOC that electric monitoring of tools module 01 sends
k, from high to low each battery case to be sorted, sequence is at front λ (t
i) battery case of Δ T retains charging according to the normal charge pattern, the individual battery case of all the other N ' participates in regulation and control.Described controlled volume calculation module 03 is according to the dump energy of the individual participation of N ' regulation and control battery case, the charge/discharge capacity of electrical changing station integral body calculated, by the forward power P calculated
+And duration T
+, backward power P
-And duration T
-Be sent to the microgrid EMS.The microgrid EMS, according to state and the operational objective of other equipment and user in electric system, is assigned battery altering station active power dispatching command P to coordinated allocation module 04
BESAnd reactive power dispatching command Q
BES.Coordinated allocation module 04 is calculated each charger active power instruction P according to allocation algorithm
kAnd Q
k, and assign to each charger by filling/change electric monitoring of tools module 01.Now, each charger works in aggressive mode, and namely each charger is gained merit/idle command value P according to supervisory control system
k, Q
kExport modulation.
Described battery altering station supervisory control system 10, under contingency 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, during from network operation, the battery altering station enters contingency mode when micro-grid system; When micro-grid system was incorporated into the power networks, if micro-grid system is assigned power control command to the battery altering station, now the battery altering station entered auxiliary mode, otherwise according to not controlling mode operation.
Claims (10)
1. the management system of the electric automobile battery replacing station in a microgrid, it is characterized in that including grid management systems, the microgrid EMS, battery altering station supervisory control system, the microgrid EMS manages each equipment or the user in micro-grid system, and accept the dispatching management of grid management systems, and the microgrid EMS is carried out Long-distance Control to grid-connected switch, to grid-connected switch, send grid-connected/from the net instruction, microgrid EMS and battery altering station supervisory control system are carried out both-way communication, energy exchange to battery altering station and microgrid manages.
2. the management method of the management system of the electric automobile battery replacing station in a microgrid according to claim 1, it is characterized in that when the battery altering station enters different operational mode with the micro-grid system running status, charger in the battery altering station enters the 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 of changing, until Full Charge Capacity; 2) auxiliary mode: active power and reactive power instruction that the battery electrical changing station is assigned according to the microgrid EMS discharge and recharge control to the battery case in electrical changing station; 3) contingency mode: the battery altering station powers to micro-grid system as main power source, maintains system voltage and frequency stabilization.
3. the management method of the management system of the electric automobile battery replacing station in microgrid according to claim 2, is characterized in that when micro-grid system the battery altering station enters contingency mode during from network operation; When micro-grid system was incorporated into the power networks, if micro-grid system is assigned power control command to the battery altering station, now the battery altering station entered auxiliary mode, otherwise according to not controlling mode operation.
4. management method according to claim 3, is characterized in that under above-mentioned not control pattern, and micro-grid system is in and net state, in the supervisory control system of described battery altering station, fills/changes electric monitoring of tools module and be in starting state, and each charger is in Passive Mode.
5. management method according to claim 2, it is characterized in that under above-mentioned auxiliary mode, micro-grid system is in and net state, described battery altering station supervisory control system is filled/is changed electric monitoring of tools module, vehicle arrival rate prediction module, controlled volume calculation module, coordinated allocation module and all starts, the charger that is retained the corresponding station of rechargeable battery case is in Passive Mode, and all the other chargers that participate in the corresponding station of regulation and control battery case start aggressive mode.
In microgrid according to claim 2 management method, it is characterized in that 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.
In microgrid according to claim 6 management method, it is characterized in that under above-mentioned adaptive model, micro-grid system is in from net state, and described replacing 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.
8. management method according to claim 1, is characterized in that the functional module of above-mentioned battery altering station supervisory control system comprises: 1) fill/change electric monitoring of tools module, 2) vehicle arrival rate prediction module, 3) controlled volume calculation module, 4) the coordinated allocation module;
Wherein, vehicle arrival rate prediction module is by the service vehicle quantity λ (t of next period
i) Δ T is sent to controlled volume calculation module;
The pre-estimation block of controlled capacity is according to prediction data and fill/change each battery case state-of-charge SOC that electric monitoring of tools module sends
k, from high to low each battery case to be sorted, sequence is at front λ (t
i) battery case of Δ T retains charging according to the normal charge pattern, 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 the individual participation of N ' regulation and control battery case, estimates the charge/discharge capacity of electrical changing station integral body, the forward power P that estimation is obtained
+And duration T
+, backward power P
-And duration T
-Be sent to the microgrid EMS;
Controlled capacity is pressed following various calculating:
The microgrid EMS, according to state and the operational objective of other equipment and user in electric system, is assigned battery altering station active power dispatching command P to the coordinated allocation module
BESAnd reactive power dispatching command Q
BES
The coordinated allocation module is assigned instruction according to following rule to each charger: if P
BES0, 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
S
rApparent power for charger;
The active power instruction P of each charger
kAnd Q
kTo assign to each charger by filling/change electric monitoring of tools module.
9. management method according to claim 1, it is characterized in that above-mentioned microgrid EMS manages each equipment or user in microgrid, and accept the dispatching management of grid management systems, the microgrid EMS is carried out Long-distance Control to grid-connected switch, to it, send grid-connected/from the net instruction, microgrid EMS and battery altering station supervisory control system are carried out both-way communication, and the energy exchange of battery altering station and microgrid is managed.
10. management method according to claim 1, the charging station that it is characterized in that above-mentioned battery altering station is identical with battery case quantity, there do not is the battery dispensing with other websites, therefore in station, the battery total amount remains unchanged, each battery case passes through standardized designs, its rated capacity, size are all identical, and in standing, charger is supported four limit work, 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 |
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