CN110880811B - Communication device and method for battery energy storage power station - Google Patents
Communication device and method for battery energy storage power station Download PDFInfo
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- CN110880811B CN110880811B CN201911166314.8A CN201911166314A CN110880811B CN 110880811 B CN110880811 B CN 110880811B CN 201911166314 A CN201911166314 A CN 201911166314A CN 110880811 B CN110880811 B CN 110880811B
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- energy storage
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- 238000004146 energy storage Methods 0.000 title claims abstract description 57
- 238000004891 communication Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims description 40
- 238000005259 measurement Methods 0.000 claims description 13
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 7
- 230000004044 response Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process 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
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/14—Energy storage units
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a communication device and a method for a battery energy storage power station, which comprise station control layer equipment, spacer layer equipment and energy storage unit layer equipment.
Description
Technical Field
The invention relates to the field of power control, in particular to a communication device and method for a battery energy storage power station.
Background
With the high-speed development of new energy technology, the necessity of energy storage technology application has been widely known in the industry in order to solve the stability and friendliness of the access of the new energy high-permeability power grid. The development trend of energy interconnection and energy complementation in the future provides a wide application space for energy storage technology, and energy storage becomes a key point in the process of developing renewable clean energy.
The battery energy storage power station has short construction period and quick response, and becomes an important measure for solving the problems of new energy consumption, peak regulation, frequency modulation and the like of the power system. As a key link of instruction transmission, the energy storage station communication architecture has a decisive role in the overall station performance. In order to ensure safe and stable operation of the battery energy storage power station, a scientific system communication scheme is formulated, so that real-time and reliable data transmission in the station is a problem to be researched urgently.
Disclosure of Invention
The invention provides a reliable battery energy storage power station communication device and a reliable battery energy storage power station communication method, which aim to solve the technical problems that the delay and instability of data transmission in a station are caused by the fact that a set of scientific system communication scheme does not exist in the battery energy storage power station at present.
In order to achieve the technical purpose, the technical scheme of the invention is that,
The communication device of the battery energy storage power station comprises a station control layer device, a spacer layer device and an energy storage unit layer device, wherein the station control layer device is connected to the energy storage unit layer device through the spacer layer device in a communication mode, and comprises a station control layer switch, a monitoring host connected to the station control layer switch in parallel, a data communication network shutdown device and a network safety monitoring device; the bay level equipment comprises a bay level switch, a public measurement and control device, a 10kV light difference protection measurement and control device, a station variable protection measurement and control device, an anti-islanding protection device and a frequency voltage emergency control device which are connected to the bay level switch in parallel; the energy storage unit layer equipment comprises an energy storage unit layer switch, and a converter secondary system, a battery management system and an on-site monitoring system which are mutually connected to the energy storage unit layer switch in parallel.
The station-controlled layer equipment further comprises a printer and a historical data server which are mutually connected to the station-controlled layer switch in parallel.
The battery energy storage power station communication device is characterized in that the station control layer equipment further comprises a synchronous time system, wherein the synchronous time system is connected to the station control layer switch and obtains time information through a GPS system and a Beidou satellite system.
The spacer layer equipment is directly connected with the monitoring host by network cables, and adopts IEC61850 communication protocol; the converter secondary system and the battery management system are also respectively connected with the monitoring host by network cables directly, and IEC61850 communication protocol is adopted; the secondary system of the converter is also directly connected with the battery management system by a shielded twisted pair, adopts Modbus communication protocol, and is connected with a pair of hard contacts at the same time; the converter secondary system is directly connected with the on-site monitoring system by double network cables, and adopts IEC61850 communication protocol; the battery management system is directly connected with the local monitoring through a network cable, and a Modbus communication protocol is adopted.
The battery energy storage power station communication device comprises a station control layer switch, a spacer layer switch and an energy storage unit layer switch, wherein the station control layer switch, the spacer layer switch and the energy storage unit layer switch comprise at least two mutually independent switch networks.
A battery energy storage power station communication method adopts the battery energy storage power station communication device, which comprises the following steps:
The data of the spacer layer equipment are directly connected to the station control layer switch, the data of the energy storage unit layer equipment are collected through the spacer layer switch and then connected to the station control layer switch, the data of the converter secondary system are respectively sent to the monitoring host and the on-site monitoring system in a concurrent mode, the battery management system sends all the data to the on-site monitoring system, the preset important data in the data are simultaneously sent to the monitoring host, the battery management system transmits protection control parameters to the converter secondary system by using the shielding twisted pair, and a shutdown command is sent to the converter secondary system by using the hard contact.
The communication method of the battery energy storage power station comprises the following response steps when the network disconnection fault occurs:
When the secondary system of the converter detects network interruption of the monitoring host, immediately taking a shutdown measure;
When the monitoring host detects network interruption with the battery management system, a shutdown command is sent to the energy storage converter corresponding to the battery management system after a certain time delay;
When the battery management system detects that communication with the converter secondary system is interrupted, a shutdown command is immediately sent to the converter secondary system through the hard contact.
The invention has the technical effects that the networking mode, the communication protocol, the data transmission strategy and the disconnection response strategy which are applicable to the battery energy storage power station are provided by combining the three-layer two-network architecture of the current transformer substation, so that the communication reliability, the instantaneity and the operation safety of the battery energy storage power station can be effectively ensured.
Drawings
FIG. 1 is a schematic diagram of a battery energy storage power station communication scheme.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1, an embodiment of the method provided by the present invention is illustrated according to a current common equipment configuration of a battery energy storage power station. The equipment of the battery energy storage power station is logically divided into station control layer equipment, spacer layer equipment and energy storage unit layer equipment.
The station control layer equipment comprises a monitoring host, a historical data server, a first area data communication network shutdown device, a printer, a network security monitoring device and the like. The spacer layer equipment comprises a spacer layer switch, a public measurement and control device, a 10kV light difference protection measurement and control device, a station variable protection measurement and control device, an anti-islanding protection device and a frequency voltage emergency control device. The energy storage unit layer equipment comprises an energy storage unit layer switch, a converter secondary system, a battery management system and an in-situ monitoring system. The station control layer equipment is connected to the energy storage unit layer equipment through the spacer layer equipment in a communication way, and comprises a station control layer switch, a monitoring host connected to the station control layer switch in parallel, a data communication network shutdown and a network safety monitoring device; the bay level equipment comprises a bay level switch, a public measurement and control device, a 10kV light difference protection measurement and control device, a station variable protection measurement and control device, an anti-islanding protection device and a frequency voltage emergency control device which are connected to the bay level switch in parallel; the energy storage unit layer equipment comprises an energy storage unit layer switch, and a converter secondary system, a battery management system and an on-site monitoring system which are mutually connected to the energy storage unit layer switch in parallel.
In order to ensure the safety of the communication network, the station control layer switch, the spacer layer switch and the energy storage unit layer switch all comprise at least two mutually independent switch networks, so that the switch networks which are arranged in a mutually redundant mode are formed, and all the devices are respectively connected to each independent switch network.
The spacer layer equipment is connected with the monitoring host by double network cables, and adopts IEC61850 communication protocol; the secondary system of the converter is connected with the monitoring host, the battery management system and the monitoring host through double network cables, and an IEC61850 communication protocol is adopted; the secondary system of the converter is connected with the battery management system through a shielded twisted pair, adopts Modbus communication protocol, and is connected with a pair of hard contacts; the secondary system of the converter is connected with the on-site monitoring system through double network cables, an IEC61850 communication protocol is adopted, and the battery management system is connected with the on-site monitoring system through network cables, and a Modbus communication protocol is adopted. The switches are connected by double optical cables, so that sufficient transmission capacity is ensured.
In combination with the data transmission requirement among the devices, the real-time performance, the reliability and the system safety of the communication are comprehensively considered, and a data transmission strategy is formulated as follows: the data of the measurement and control protection device of the spacer layer is directly connected to the station-controlled layer switch, the data of the energy storage unit layer equipment is collected by the spacer layer switch and then connected to the station-controlled layer switch, the data of the secondary system of the converter is respectively sent to the monitoring host and the on-site monitoring system in a concurrent mode, the battery management system sends all the data to the on-site monitoring system, part of important data to the monitoring host, the battery management system transmits protection control parameters to the secondary system of the converter by using a shielding twisted pair, and a shutdown command is sent to the secondary system of the converter by using a hard joint.
Because the communication between the devices is possibly interrupted due to the failure of the communication device, in order to ensure the safety of the devices of the energy storage power station, the network disconnection response strategy of the system is formulated as follows: the secondary system of the converter detects the network interruption of the monitoring host, immediately takes a shutdown measure, the monitoring host detects the network interruption of the battery management system, and sends a shutdown command to the PCS corresponding to the battery management system after a certain time delay, and the battery management system detects the communication interruption of the secondary system of the converter and immediately sends the shutdown command to the secondary system of the converter through a hard contact.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The communication device of the battery energy storage power station is characterized by comprising a station control layer device, a spacer layer device and an energy storage unit layer device, wherein the station control layer device is connected to the energy storage unit layer device through the spacer layer device in a communication mode, and comprises a station control layer switch, a monitoring host connected to the station control layer switch in parallel, a data communication network shutdown device and a network safety monitoring device; the bay level equipment comprises a bay level switch, a public measurement and control device, a 10kV light difference protection measurement and control device, a station variable protection measurement and control device, an anti-islanding protection device and a frequency voltage emergency control device which are connected to the bay level switch in parallel; the energy storage unit layer equipment comprises an energy storage unit layer switch, a converter secondary system, a battery management system and an on-site monitoring system, wherein the converter secondary system, the battery management system and the on-site monitoring system are mutually connected to the energy storage unit layer switch in parallel;
The station control layer switch, the spacer layer switch and the energy storage unit layer switch all comprise at least two mutually independent switch networks;
The spacer layer equipment is also directly connected with the monitoring host by network cables, and adopts IEC61850 communication protocol; the converter secondary system and the battery management system are also respectively connected with the monitoring host by network cables directly, and IEC61850 communication protocol is adopted; the secondary system of the converter is also directly connected with the battery management system by a shielded twisted pair, adopts Modbus communication protocol, and is connected with a pair of hard contacts at the same time; the converter secondary system is directly connected with the on-site monitoring system by double network cables, and adopts IEC61850 communication protocol; the battery management system is directly connected with the local monitoring through a network cable, and a Modbus communication protocol is adopted.
2. The battery energy storage power station communication device of claim 1, wherein the station-level equipment further comprises a printer and a history data server connected in parallel to the station-level switch.
3. The battery energy storage power station communication device according to claim 1, wherein the station control layer equipment further comprises a synchronous time system, wherein the synchronous time system is connected to the station control layer switch, and the time information is obtained through a GPS system and a beidou satellite system.
4. A battery energy storage power station communication method, characterized in that a battery energy storage power station communication device according to any one of claims 1-3 is used, comprising the steps of:
The data of the spacer layer equipment are directly connected to the station control layer switch, the data of the energy storage unit layer equipment are collected through the spacer layer switch and then connected to the station control layer switch, the data of the converter secondary system are respectively sent to the monitoring host and the on-site monitoring system in a concurrent mode, the battery management system sends all the data to the on-site monitoring system, the preset important data in the data are simultaneously sent to the monitoring host, the battery management system transmits protection control parameters to the converter secondary system by using the shielding twisted pair, and a shutdown command is sent to the converter secondary system by using the hard contact.
5. The method of claim 4, wherein the responding step comprises, when a network outage occurs:
When the secondary system of the converter detects network interruption of the monitoring host, immediately taking a shutdown measure;
When the monitoring host detects network interruption with the battery management system, a shutdown command is sent to the energy storage converter corresponding to the battery management system after a certain time delay;
When the battery management system detects that communication with the converter secondary system is interrupted, a shutdown command is immediately sent to the converter secondary system through the hard contact.
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| CN201911166314.8A CN110880811B (en) | 2019-11-25 | 2019-11-25 | Communication device and method for battery energy storage power station |
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| CN111273630A (en) * | 2020-03-30 | 2020-06-12 | 深圳供电局有限公司 | Distributed energy storage control system |
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| CN102842914A (en) * | 2012-08-02 | 2012-12-26 | 中国电力科学研究院 | Energy storage power station monitoring system |
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| CN109713704A (en) * | 2019-03-06 | 2019-05-03 | 国网湖南省电力有限公司 | Grid side battery energy storage power station communicating interrupt method of controlling security, system and medium |
| CN110460074A (en) * | 2019-08-09 | 2019-11-15 | 国电南瑞科技股份有限公司 | A kind of energy-accumulating power station comprehensive management and control system |
| CN110488199A (en) * | 2019-09-04 | 2019-11-22 | 国网湖南省电力有限公司 | A kind of high capacity cell energy-accumulating power station battery system alarm response method |
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2019
- 2019-11-25 CN CN201911166314.8A patent/CN110880811B/en active Active
Patent Citations (6)
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| CN102842914A (en) * | 2012-08-02 | 2012-12-26 | 中国电力科学研究院 | Energy storage power station monitoring system |
| CN204068290U (en) * | 2014-03-24 | 2014-12-31 | 中国能源建设集团广东省电力设计研究院 | A kind of supervisory control system of battery energy storage station |
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