CN105811444A - Electromobile and power grid interactive simulation load system and electrical protection method thereof - Google Patents
Electromobile and power grid interactive simulation load system and electrical protection method thereof Download PDFInfo
- Publication number
- CN105811444A CN105811444A CN201610266745.1A CN201610266745A CN105811444A CN 105811444 A CN105811444 A CN 105811444A CN 201610266745 A CN201610266745 A CN 201610266745A CN 105811444 A CN105811444 A CN 105811444A
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- Prior art keywords
- module
- monitor terminal
- battery
- grid
- protection
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004088 simulation Methods 0.000 title claims abstract description 13
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 3
- 238000000819 phase cycle Methods 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
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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
- H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an electromobile and power grid interactive simulation load system. The electromobile and power grid interactive simulation load system comprises a battery system, a bidirectional AC/DC module, a grid-connected control protection module and a monitoring terminal, wherein the battery system comprises a battery and a battery management system, the battery management system is connected with the battery, the monitoring terminal is connected with the battery management system, the bidirectional AC/DC module and the grid-connected control protection module separately, the battery management system is also connected with the bidirectional AC/DC module, the bidirectional AC/DC module is connected with a power grid through a circuit breaker and is further connected with the grid-connected control protection module, and the grid-connected control protection module is connected with the power grid through the circuit breaker. The invention also discloses an electrical protection method of the system. By the system, the electrical safety problem of a device during the simulation load working process and the grid-connected safety problem when an electromobile is connected to a power grid are solved, and the safety of the device is improved.
Description
Technical field
The present invention relates to a kind of electric automobile and electrical network interactive simulation load system and electrical protection method thereof, belong to electric automobile and electrical network interaction field.
Background technology
V2G (VehicletoGrid) theory is exactly the two-way flow of energy between electric automobile charging station and electrical network and electric automobile realizes the two-way exchange of energy and information between electrical network as mobile energy-storage travelling wave tube under slave mode.V2G technology can realize PFC, energy in bidirectional flow, and this not only can filter harmonic pollution, it is also possible to improves stability and the reliability of electrical network.The development of electric automobile makes battery energy storage mode obtain quick development.Being currently based on the charge-discharge facility of V2G, to there is also security reliability low, function singleness, the problems such as price is higher.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of electric automobile and electrical network interactive simulation load system and electrical protection method thereof.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of electric automobile and electrical network interactive simulation load system, including battery system, two-way AC/DC module, cutting-in control protection module and monitor terminal；Described battery system includes battery and the battery management system being connected with battery; described monitor terminal protects module to be connected with battery management system, two-way AC/DC module and cutting-in control respectively; described battery management system is also connected with two-way AC/DC module; described two-way AC/DC module is connected with electrical network by chopper; described two-way AC/DC module also protects module to be connected with cutting-in control, and described cutting-in control protection module is connected with electrical network by chopper.
A kind of electric automobile and the electrical protection method of the electrical protection method of electrical network interactive simulation load system, comprise the following steps,
Step 1, battery management system is to charging total current and the measurement of SOC situation, and measured value is sent to monitor terminal；
Step 2, monitor terminal judges whether charging total current exceedes default overcurrent protection threshold value, if it is, be judged to internal fault, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, exits flow process；Otherwise go to step 3；
Step 3, monitor terminal judges whether SOC situation exceedes default SOC operation interval, if it is, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, exits flow process；Otherwise go to step 4；
Step 4, the three-phase voltage measurement to input of the two-way AC/DC module, and measured value is sent to monitor terminal；
Step 5, monitor terminal measures the size of single-phase power, it is judged that whether three-phase voltage sends distortion, if; then going to step 6, otherwise carry out outer protection, namely monitor terminal sends trip signal to grid-connected protection module; cut off chopper, and send isolated island signal, exit flow process；
Step 6, it may be judged whether adopt overcurrent protection of composite voltage start, if it is, go to step 7, otherwise exit flow process；
Step 7, it may be judged whether current break or negative phase-sequence earth-current occur, if it is, cutting-in control protection module voltage transformer disconnection, exits flow process；Otherwise go to step 8；
Step 8, it may be judged whether meritorious power reduction occur or transfinite, if it is, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, and sends isolated island signal.
Trip signal time delay sent after some seconds.
The beneficial effect that the present invention reaches: the invention solves the grid connection security problem when electrical safety problems of equipment self and access electrical network in fictitious load work process, the safety of raising equipment self, simultaneously, the monitoring of battery SOC state is conducive to improving the life-span of battery, is conducive to the popularization and application of energy-storage system in V2G process.
Accompanying drawing explanation
Fig. 1 is V2G analog loading system block diagram.
Fig. 2 is the flow chart of electrical protection method.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.Following example are only for clearly illustrating technical scheme, and can not limit the scope of the invention with this.
As it is shown in figure 1, a kind of electric automobile and electrical network interactive simulation load system, including battery system (PACK), two-way AC/DC module, cutting-in control protection module and monitor terminal；Wherein, battery system includes battery and the battery management system (BMS) being connected with battery, cutting-in control protection module primary responsibility overcurrent protection, overvoltage protection and isolated island protection.
Each parts annexation is as follows:
Monitor terminal protects module to be connected with battery management system, two-way AC/DC module and cutting-in control respectively; battery management system is also connected with two-way AC/DC module; two-way AC/DC module is connected with electrical network by chopper; two-way AC/DC module also protects module to be connected with cutting-in control, and cutting-in control protection module is connected with electrical network by chopper.
The electrical protection method of said system, concrete as in figure 2 it is shown, comprise the following steps:
Step 1, battery management system is to charging total current and the measurement of SOC situation, and measured value is sent to monitor terminal.
Step 2, monitor terminal judges whether charging total current exceedes default overcurrent protection threshold value, if it is, be judged to internal fault, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, exits flow process；Otherwise go to step 3.
Step 3, monitor terminal judges whether SOC situation exceedes default SOC operation interval, if it is, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, exits flow process；Otherwise go to step 4.
Step 4, the three-phase voltage measurement to input of the two-way AC/DC module, and measured value is sent to monitor terminal.
Step 5, monitor terminal measures the size of single-phase power, it is judged that whether three-phase voltage sends distortion, if; then going to step 6, otherwise carry out outer protection, namely monitor terminal sends trip signal to grid-connected protection module; cut off chopper, and send isolated island signal, exit flow process.
Step 6, it may be judged whether adopt overcurrent protection of composite voltage start, if it is, go to step 7, otherwise exit flow process.
Step 7, it may be judged whether current break or negative phase-sequence earth-current occur, if it is, cutting-in control protection module voltage transformer disconnection, exits flow process；Otherwise go to step 8.
Step 8, it may be judged whether meritorious power reduction occur or transfinite, if it is, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, and sends isolated island signal.
In above-mentioned electic protection process, trip signal time delay sent after some seconds, it is to avoid protection misoperation, can send alarm when there is inside and outside portion's fault.
The invention solves the grid connection security problem when electrical safety problems of equipment self and access electrical network in fictitious load work process, the safety of raising equipment self, meanwhile, the monitoring of battery SOC state is conducive to improving the life-span of battery, is conducive to the popularization and application of energy-storage system in V2G process.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the technology of the present invention principle; can also making some improvement and deformation, these improve and deformation also should be regarded as protection scope of the present invention.
Claims (3)
1. an electric automobile and electrical network interactive simulation load system, it is characterised in that: include battery system, two-way AC/DC module, cutting-in control protection module and monitor terminal；
Described battery system includes battery and the battery management system being connected with battery; described monitor terminal protects module to be connected with battery management system, two-way AC/DC module and cutting-in control respectively; described battery management system is also connected with two-way AC/DC module; described two-way AC/DC module is connected with electrical network by chopper; described two-way AC/DC module also protects module to be connected with cutting-in control, and described cutting-in control protection module is connected with electrical network by chopper.
2. based on the electrical protection method of a kind of electric automobile described in claim 1 Yu electrical network interactive simulation load system, it is characterised in that: comprise the following steps,
Step 1, battery management system is to charging total current and the measurement of SOC situation, and measured value is sent to monitor terminal；
Step 2, monitor terminal judges whether charging total current exceedes default overcurrent protection threshold value, if it is, be judged to internal fault, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, exits flow process；Otherwise go to step 3；
Step 3, monitor terminal judges whether SOC situation exceedes default SOC operation interval, if it is, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, exits flow process；Otherwise go to step 4；
Step 4, the three-phase voltage measurement to input of the two-way AC/DC module, and measured value is sent to monitor terminal；
Step 5, monitor terminal measures the size of single-phase power, it is judged that whether three-phase voltage sends distortion, if; then going to step 6, otherwise carry out outer protection, namely monitor terminal sends trip signal to grid-connected protection module; cut off chopper, and send isolated island signal, exit flow process；
Step 6, it may be judged whether adopt overcurrent protection of composite voltage start, if it is, go to step 7, otherwise exit flow process；
Step 7, it may be judged whether current break or negative phase-sequence earth-current occur, if it is, cutting-in control protection module voltage transformer disconnection, exits flow process；Otherwise go to step 8；
Step 8, it may be judged whether meritorious power reduction occur or transfinite, if it is, monitor terminal sends trip signal to grid-connected protection module, cuts off chopper, and sends isolated island signal.
3. the electrical protection method of a kind of electric automobile according to claim 2 and electrical network interactive simulation load system, it is characterised in that: trip signal time delay sent after some seconds.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610266745.1A CN105811444B (en) | 2016-04-26 | 2016-04-26 | A kind of electric vehicle and power grid interactive simulation load system and its electrical protection method |
| PCT/CN2016/108794 WO2017185756A1 (en) | 2016-04-26 | 2016-12-07 | Electric automobile and power grid interactive simulation load system and electrical protection method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610266745.1A CN105811444B (en) | 2016-04-26 | 2016-04-26 | A kind of electric vehicle and power grid interactive simulation load system and its electrical protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105811444A true CN105811444A (en) | 2016-07-27 |
| CN105811444B CN105811444B (en) | 2018-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610266745.1A Active CN105811444B (en) | 2016-04-26 | 2016-04-26 | A kind of electric vehicle and power grid interactive simulation load system and its electrical protection method |
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| Country | Link |
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| CN (1) | CN105811444B (en) |
| WO (1) | WO2017185756A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017185756A1 (en) * | 2016-04-26 | 2017-11-02 | 国电南瑞科技股份有限公司 | Electric automobile and power grid interactive simulation load system and electrical protection method therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054785A (en) * | 2018-01-27 | 2018-05-18 | 丘健兴 | A kind of circuit for preventing wind power plant island-grid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229900A1 (en) * | 2008-03-13 | 2009-09-17 | International Business Machines Corporation | Plugin hybrid electric vehicle with v2g optimization system |
| CN104249629A (en) * | 2013-06-28 | 2014-12-31 | 比亚迪股份有限公司 | Electric vehicle, power system of the same, and charging method of said power system |
| CN204179732U (en) * | 2014-11-13 | 2015-02-25 | 温州大学 | Based on the multifunctional vehicle mounted charge and discharge electrical equipment of V2G |
| CN105068008A (en) * | 2015-07-14 | 2015-11-18 | 南京航空航天大学 | Battery SOC (state of charge) estimation method by utilizing vehicle-mounted charging machine identification battery parameter |
| KR20160025166A (en) * | 2014-08-27 | 2016-03-08 | 임기돈 | The Method Of Applying Vehicle-To-Grid Technology For Operating Vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002252928A (en) * | 2001-02-26 | 2002-09-06 | Miki Denki Kk | Distributed power supply system, and control/protection device for the same |
| CN101814765A (en) * | 2010-04-06 | 2010-08-25 | 中国电力科学研究院 | Power supply control system of bidirectional electric automobile charger |
| CN101931238A (en) * | 2010-04-29 | 2010-12-29 | 浙江省电力试验研究院 | Master-slave strategy-based microgrid system coordination control method |
| CN102280903B (en) * | 2010-06-10 | 2014-07-30 | 上海市电力公司 | V2G intelligent charging and discharging system |
| CN202455130U (en) * | 2011-12-31 | 2012-09-26 | 比亚迪股份有限公司 | Charging/discharging control system of electric vehicle and electric vehicle |
| CN104767220B (en) * | 2015-04-14 | 2017-07-11 | 扬州大学 | The pattern that is incorporated into the power networks and the feed forward control method of independent operation mode switching |
| CN105811444B (en) * | 2016-04-26 | 2018-08-14 | 海南电网有限责任公司 | A kind of electric vehicle and power grid interactive simulation load system and its electrical protection method |
-
2016
- 2016-04-26 CN CN201610266745.1A patent/CN105811444B/en active Active
- 2016-12-07 WO PCT/CN2016/108794 patent/WO2017185756A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090229900A1 (en) * | 2008-03-13 | 2009-09-17 | International Business Machines Corporation | Plugin hybrid electric vehicle with v2g optimization system |
| CN104249629A (en) * | 2013-06-28 | 2014-12-31 | 比亚迪股份有限公司 | Electric vehicle, power system of the same, and charging method of said power system |
| KR20160025166A (en) * | 2014-08-27 | 2016-03-08 | 임기돈 | The Method Of Applying Vehicle-To-Grid Technology For Operating Vehicle |
| CN204179732U (en) * | 2014-11-13 | 2015-02-25 | 温州大学 | Based on the multifunctional vehicle mounted charge and discharge electrical equipment of V2G |
| CN105068008A (en) * | 2015-07-14 | 2015-11-18 | 南京航空航天大学 | Battery SOC (state of charge) estimation method by utilizing vehicle-mounted charging machine identification battery parameter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017185756A1 (en) * | 2016-04-26 | 2017-11-02 | 国电南瑞科技股份有限公司 | Electric automobile and power grid interactive simulation load system and electrical protection method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105811444B (en) | 2018-08-14 |
| WO2017185756A1 (en) | 2017-11-02 |
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