CN110880811A - Battery energy storage power station communication device and method - Google Patents
Battery energy storage power station communication device and method Download PDFInfo
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- CN110880811A CN110880811A CN201911166314.8A CN201911166314A CN110880811A CN 110880811 A CN110880811 A CN 110880811A CN 201911166314 A CN201911166314 A CN 201911166314A CN 110880811 A CN110880811 A CN 110880811A
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- energy storage
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- 238000004146 energy storage Methods 0.000 title claims abstract description 60
- 238000004891 communication Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 15
- 125000006850 spacer group Chemical group 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims description 39
- 238000005259 measurement Methods 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 8
- 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
- 238000012806 monitoring device Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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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
Abstract
The invention discloses a communication device and a communication method for a battery energy storage power station, wherein the communication device comprises 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 rapid development of new energy technology, the necessity of energy storage technology application has been widely recognized by the industry in order to solve the stability and friendliness of new energy high-permeability power grid access. The development trend of future energy interconnection and energy complementation provides a wide application space for an energy storage technology, and the energy storage becomes a key point in the process of developing renewable clean energy.
The battery energy storage power station has become an important measure for solving the problems of new energy consumption, peak regulation, frequency modulation and the like of the power system due to short construction period and quick response. As a key link of instruction transmission, the energy storage station communication architecture has a decisive effect on the performance of the whole station. In order to ensure the safe and stable operation of the battery energy storage power station, a scientific system communication scheme is formulated, so that the data transmission in the station is real-time and reliable, and the problem to be researched is urgent.
Disclosure of Invention
The invention provides a reliable communication device and method for a battery energy storage power station, and aims to solve the technical problems that data transmission in the station is delayed and unstable due to the fact that no scientific system communication scheme exists in the battery energy storage power station at present.
In order to achieve the technical purpose, the technical scheme of the invention is that,
a battery energy storage power station communication device comprises station control layer equipment, spacer layer equipment and energy storage unit layer equipment, wherein the station control layer equipment is connected to the energy storage unit layer equipment through the spacer layer equipment in a communication mode; the bay level equipment comprises a bay level switch, a public measurement and control device, a 10kV optical difference protection measurement and control device, a station transformer protection measurement and control device, an anti-islanding protection device and a frequency voltage emergency control device, wherein the public measurement and control device, the 10kV optical difference protection measurement and control device, the station transformer protection measurement and control device, the anti-islanding protection device and the frequency voltage emergency control device are connected; 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 connected to the energy storage unit layer switch in parallel.
The battery energy storage power station communication device is characterized in that the station control layer equipment further comprises a printer and a historical data server which are mutually connected to the station control 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, and 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.
According to the battery energy storage power station communication device, the bay level equipment is directly connected with the monitoring host through a network cable, and an IEC61850 communication protocol is adopted; the converter secondary system and the battery management system are also directly connected with the monitoring host through network cables respectively, and an IEC61850 communication protocol is adopted; the converter secondary system is also directly connected with the battery management system by a shielded twisted pair, adopts a Modbus communication protocol and is simultaneously connected with a pair of hard contacts; the converter secondary system is also directly connected with the on-site monitoring system through a double-network cable, and an IEC61850 communication protocol is adopted; the battery management system is also directly connected with the local monitor through a network cable, and a Modbus communication protocol is adopted.
The battery energy storage power station communication device is characterized in that the station control layer switch, the spacing layer switch and the energy storage unit layer switch respectively comprise at least two mutually independent switch networks.
A communication method of a battery energy storage power station adopts the communication device of the battery energy storage power station, and comprises the following steps:
the method comprises the steps that data of spacer layer equipment are directly accessed to a station control layer switch, data of energy storage unit layer equipment are collected through the spacer layer switch and then accessed to the station control layer switch, data of a secondary system of the converter are respectively sent to a monitoring host and an on-site monitoring system in a concurrent mode, a battery management system sends all the data to the on-site monitoring system and simultaneously sends preset important data in the 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 contact.
According to the communication method of the battery energy storage power station, when a network disconnection fault occurs, the response step comprises the following steps:
when the secondary system of the converter detects the network interruption with the monitoring host, immediately taking a shutdown measure;
when the monitoring host detects that the network of the battery management system is interrupted, a shutdown command is sent to an energy storage converter corresponding to the battery management system after a certain delay;
when the battery management system detects that the 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 by combining the three-layer two-network architecture of the current transformer substation, the networking mode, the communication protocol, the data transmission strategy and the network disconnection response strategy which are suitable for the battery energy storage power station are provided, and the communication reliability, the real-time performance and the operation safety of the battery energy storage power station can be effectively guaranteed.
Drawings
Fig. 1 is a diagram of a battery energy storage power station communication scheme architecture.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, the embodiment of the method provided by the present invention is illustrated according to the conventional equipment configuration of the present 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 zone I data communication gateway machine, a printer, a network safety monitoring device and the like. The bay level equipment comprises a bay level switch, a public measurement and control device, a 10kV optical difference protection measurement and control device, a station transformer 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 on-site monitoring system. The station control layer equipment is connected to the energy storage unit layer equipment through the interval layer equipment in a communication mode, and comprises a station control layer switch, a monitoring host, a data communication gateway machine and a network safety monitoring device, wherein the monitoring host, the data communication gateway machine and the network safety monitoring device are connected to the station control layer switch in parallel; the bay level equipment comprises a bay level switch, a public measurement and control device, a 10kV optical difference protection measurement and control device, a station transformer protection measurement and control device, an anti-islanding protection device and a frequency voltage emergency control device, wherein the public measurement and control device, the 10kV optical difference protection measurement and control device, the station transformer protection measurement and control device, the anti-islanding protection device and the 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 on-site monitoring system, wherein the converter secondary system, the battery management system and the on-site monitoring system are 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 interval layer switch and the energy storage unit layer switch comprise at least two mutually independent switch networks to form switch networks which are mutually arranged in a redundant manner, and all the devices are connected to each independent switch network respectively.
The bay level equipment and the monitoring host are connected by a double network cable, and an IEC61850 communication protocol is adopted; the converter secondary system is connected with the monitoring host, the battery management system is connected with the monitoring host through double network cables, and an IEC61850 communication protocol is adopted; the converter secondary system is connected with the battery management system through a shielded twisted pair, adopts a Modbus communication protocol and is connected with a pair of hard contacts; the converter secondary system is connected with the on-site monitoring system through double network cables, an IEC61850 communication protocol is adopted, the battery management system is connected with the on-site monitoring system through the network cables, and a Modbus communication protocol is adopted. The switches are connected by double optical cables, so that enough transmission capacity is ensured.
The data transmission requirement among the devices is combined, the real-time performance, the reliability and the system safety of communication are comprehensively considered, and the data transmission strategy is formulated as follows: the data of the measurement and control protection device of the spacer layer is directly accessed to the station control layer switch, the data of the energy storage unit layer equipment is collected by the spacer layer switch and then accessed to the station control layer switch, the data of the secondary system of the converter 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 and sends 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 the shielding twisted pair, and a shutdown command is sent to the secondary system of the converter by using a hard contact.
Because communication equipment failure can cause communication interruption among equipment, in order to ensure the equipment safety of the energy storage power station, the network disconnection response strategy of the system is formulated as follows: the method comprises the steps that a converter secondary system detects network interruption with a monitoring host, immediately takes a shutdown measure, the monitoring host detects network interruption with a battery management system, sends a shutdown command to a PCS (personal computer) corresponding to the battery management system after certain time delay, and the battery management system detects communication interruption with the converter secondary system and immediately sends the shutdown command to the converter secondary system through a hard contact.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A battery energy storage power station communication device is characterized by comprising station control layer equipment, spacer layer equipment and energy storage unit layer equipment, wherein the station control layer equipment is connected to the energy storage unit layer equipment through the spacer layer equipment in a communication mode; the bay level equipment comprises a bay level switch, a public measurement and control device, a 10kV optical difference protection measurement and control device, a station transformer protection measurement and control device, an anti-islanding protection device and a frequency voltage emergency control device, wherein the public measurement and control device, the 10kV optical difference protection measurement and control device, the station transformer protection measurement and control device, the anti-islanding protection device and the frequency voltage emergency control device are connected; 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 connected to the energy storage unit layer switch in parallel.
2. The battery energy storage power station communication device as claimed in 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 as claimed in claim 1, wherein the station control layer device further comprises a synchronous time system, 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.
4. The battery energy storage power station communication device as claimed in claim 1, wherein the bay level equipment is directly connected with the monitoring host by a network cable, and an IEC61850 communication protocol is adopted; the converter secondary system and the battery management system are also directly connected with the monitoring host through network cables respectively, and an IEC61850 communication protocol is adopted; the converter secondary system is also directly connected with the battery management system by a shielded twisted pair, adopts a Modbus communication protocol and is simultaneously connected with a pair of hard contacts; the converter secondary system is also directly connected with the on-site monitoring system through a double-network cable, and an IEC61850 communication protocol is adopted; the battery management system is also directly connected with the local monitor through a network cable, and a Modbus communication protocol is adopted.
5. The battery energy storage power station communication device as claimed in claim 1, wherein the station level switch, the bay level switch and the energy storage unit level switch each comprise at least two mutually independent switch networks.
6. A battery energy storage power station communication method, characterized in that the battery energy storage power station communication device according to any one of claims 1-5 is adopted, and the method comprises the following steps:
the method comprises the steps that data of spacer layer equipment are directly accessed to a station control layer switch, data of energy storage unit layer equipment are collected through the spacer layer switch and then accessed to the station control layer switch, data of a secondary system of the converter are respectively sent to a monitoring host and an on-site monitoring system in a concurrent mode, a battery management system sends all the data to the on-site monitoring system and simultaneously sends preset important data in the 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 contact.
7. The battery energy storage power station communication method of claim 6, wherein when a network failure occurs, the responding step comprises:
when the secondary system of the converter detects the network interruption with the monitoring host, immediately taking a shutdown measure;
when the monitoring host detects that the network of the battery management system is interrupted, a shutdown command is sent to an energy storage converter corresponding to the battery management system after a certain delay;
when the battery management system detects that the 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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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 |
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