CN111641261A - High-reliability energy storage power station communication architecture and method thereof - Google Patents
High-reliability energy storage power station communication architecture and method thereof Download PDFInfo
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- CN111641261A CN111641261A CN202010380371.2A CN202010380371A CN111641261A CN 111641261 A CN111641261 A CN 111641261A CN 202010380371 A CN202010380371 A CN 202010380371A CN 111641261 A CN111641261 A CN 111641261A
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- 238000004891 communication Methods 0.000 title claims abstract description 160
- 238000004146 energy storage Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 9
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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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- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
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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
- H02J2213/00—Indexing scheme relating to details of circuit arrangements for providing remote indication of network conditions of for circuit arrangements for providing remote control of switching means in a power distribution network
- H02J2213/10—Indexing scheme relating to details of circuit arrangements for providing remote indication of network conditions of for circuit arrangements for providing remote control of switching means in a power distribution network using simultaneously two or more different transmission 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
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Abstract
The invention discloses a high-reliability energy storage power station communication architecture and a method thereof. Energy storage power station communication architecture of high reliability includes: the PCS system and the BMS system are respectively communicated through two redundant hard-wired and Ethernet paths; the PCS system and the EMS system establish communication connection through the Ethernet; the BMS system and the EMS system are in communication connection through the Ethernet; according to a preset communication mechanism, the information to be uploaded or the control signal to be issued is directly transmitted or transmitted by a bypass on the basis of priority, or the stop and trip signals are directly transmitted through hard wiring. The high-reliability energy storage power station communication architecture and the method thereof disclosed by the invention can improve the reliability and redundancy of an energy storage power station communication system and ensure the safe and stable operation of the energy storage system.
Description
Technical Field
The invention belongs to the technical field of power electronics, and particularly relates to a high-reliability energy storage power station communication framework and a high-reliability energy storage power station communication method.
Background
The publication number is CN110165689A, the subject of which is a control system for an energy storage system and the corresponding patent application of the invention, the technical scheme of which discloses' an energy storage system, comprising: a power management system EMS configured to perform power management; a power conversion system PCS configured to perform power conversion; a battery management system BMS for monitoring the status of the energy storage; and a control system comprising: a first bus, wherein an EMS as a master and a PCS and a BMS as slaves are connected to the first bus, and wherein the first bus is configured to transmit a control instruction transmitted from the EMS to the PCS and the BMS; and a second bus, wherein an EMS, a PCS, and a BMS are connected to the second bus, and wherein the second bus is configured to transmit status data transmitted from the PCS and the BMS to the EMS ".
With the rapid development of distributed energy and electric vehicles, the stable and safe operation of the power grid is affected. The energy storage system can store and release energy as required, peak clipping and valley filling are performed, and the problems of randomness and volatility of new energy power generation and electric automobile charging are effectively solved. Therefore, energy storage systems have become an indispensable and important component of modern power systems. The battery energy storage has great advantages in energy density, and the technology is mature, so that the battery energy storage is widely applied at present.
Taking the above patent application as an example, an Energy storage power station generally includes a battery System, a Power Conversion System (PCS), and an Energy Management System (EMS). The Battery System is composed of an energy storage Battery and a Battery Management System (BMS). Reliable communication among the BMS, the PCS and the EMS plays a crucial role in safe and stable operation of the energy storage system. At present, the reliability and redundancy of most energy storage power station communication systems are low, and a large number of energy storage system operation faults are caused by internal communication faults.
Disclosure of Invention
Aiming at the conditions of the prior art, the invention overcomes the defects and provides a high-reliability energy storage power station communication framework and a high-reliability energy storage power station communication method.
The invention discloses a high-reliability energy storage power station communication architecture and a method thereof, and mainly aims to improve the reliability and redundancy of an energy storage power station communication system and ensure the safe and stable operation of the energy storage system.
The invention discloses a high-reliability energy storage power station communication framework and a method thereof, and further aims to ensure normal transmission of information and alarm signals when partial communication faults occur in the energy storage power station, so that system stop and even safety accidents are avoided.
The technical scheme is that the high-reliability energy storage power station communication framework is adapted to an energy storage power station, the energy storage power station comprises a BMS system, a PCS system and an EMS system, and the BMS system is used for monitoring the battery state and protecting the battery operation, so that the safe and reliable operation of the battery is ensured; the PCS system is used for controlling power conversion; the EMS system is used for monitoring the state of the whole station and controlling the power, and is characterized in that the high-reliability energy storage power station communication architecture comprises:
the PCS system and the BMS system are respectively communicated through two redundant hard-wired and Ethernet paths;
the PCS system and the EMS system are communicated through the Ethernet;
the BMS system and the EMS system are in communication connection through the Ethernet;
according to a preset communication mechanism, the information to be uploaded or the control signal to be issued is directly transmitted or transmitted by a bypass on the basis of priority, or the stop and trip signals are directly transmitted through hard wiring.
According to the above technical solution, as a preferred technical solution of the above technical solution, the preset communication mechanism is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
transmitting a shutdown and trip signal to the PCS system through a hard wire when the BMS system detects a simultaneous interruption of an ethernet communication connection between the EMS system and the PCS system;
when the PCS system detects a simultaneous interruption of the Ethernet communication connection between the EMS system and the BMS system, a shutdown and trip signal is transmitted to the BMS system through a hard wire.
According to the above technical solution, as a preferred technical solution of the above technical solution, the preset communication mechanism is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the Ethernet communication connection between any two systems of the PCS system, the BMS system and the EMS system is interrupted, the uplink information or the control signals originally transmitted by the path between the two systems are changed into forwarding transmission through another system.
According to the above technical solution, as a preferred technical solution of the above technical solution, the preset communication mechanism is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the ethernet communication connection between any two of the PCS system, the BMS system, and the EMS system is not interrupted, the uplink information or the control signal is transmitted through a path between the two systems.
The invention also discloses a high-reliability energy storage power station communication method, which is used for adapting to an energy storage power station, wherein the energy storage power station comprises a BMS system, a PCS system and an EMS system, and the BMS system is used for monitoring the battery state and protecting the battery operation, so as to ensure the safe and reliable operation of the battery; the PCS system is used for controlling power conversion; the EMS system is used for monitoring the state of the whole station and controlling the power, and is characterized in that the high-reliability energy storage power station communication method comprises the following steps:
step S1: simultaneously connecting two paths of a hard wire and an Ethernet which are mutually redundant between the PCS system and the BMS system to respectively establish communication connection;
step S2: accessing the Ethernet between the PCS system and the EMS system to establish Ethernet communication connection;
step S3: accessing the Ethernet between the BMS system and the EMS system to establish Ethernet communication connection;
step S4: according to a preset communication mechanism, the information to be uploaded or the control signal to be issued is directly transmitted or transmitted by a bypass on the basis of priority, or the stop and trip signals are directly transmitted through hard wiring.
According to the above technical solution, as a preferable technical solution of the above technical solution, the upload information includes switching value information, analog value information, non-electric quantity information, and an operation signal and an alarm signal.
According to the above technical solution, as a preferable technical solution of the above technical solution, the control signal includes an operation parameter and an operation mode.
According to the technical scheme, as a preferable technical scheme of the technical scheme, various signals are transmitted according to preset priority, wherein the priority of the alarm signal is the highest, and the priority of the control signal is higher than that of other non-control signals.
According to the technical scheme, as a preferable technical scheme of the technical scheme, the Ethernet communication connection adopts an IEC61850 communication protocol.
According to the above technical means, as a preferred technical means of the above technical means, the PCS system includes a plurality of PCS modules, transmission paths for ethernet communication connection are provided between any one of the PCS modules and the EMS system, the BMS system includes a plurality of BMS modules, and transmission paths for ethernet communication connection are provided between any one of the BMS modules and the EMS system.
The high-reliability energy storage power station communication architecture and the method thereof have the advantages of improving the reliability and the redundancy of the energy storage power station communication system and ensuring the safe and stable operation of the energy storage system.
Drawings
Fig. 1 is a schematic view of the topology of the energy storage power station communication system of the present invention.
Detailed Description
The invention discloses a high-reliability energy storage power station communication architecture and a high-reliability energy storage power station communication method, and the specific implementation mode of the invention is further described below by combining with the preferred embodiment.
Referring to fig. 1 of the drawings, fig. 1 shows a topology of a high reliability energy storage power station communication architecture and method thereof.
It should be noted that "communication" and "communication" that may be involved in other parts of the embodiments of the present invention and the background art are the same concept and are not distinguished.
Preferred embodiments (high reliability energy storage plant communication architecture).
Preferably, referring to fig. 1 of the drawings, the dashed lines represent connections via ethernet, and the solid lines represent hardwiring, the high reliability energy storage power station communication architecture being adapted to an energy storage power station comprising a BMS system, a PCS system and an EMS system, wherein:
the BMS system is used for monitoring the battery state and protecting the battery operation, so that the safe and reliable operation of the battery is ensured;
the PCS system is used for controlling power conversion;
the EMS system is used for monitoring the state of the whole station and controlling the power; wherein, energy storage power station communication architecture of high reliability includes:
the PCS system and the BMS system are respectively communicated through two redundant hard-wired and Ethernet paths;
the PCS system and the EMS system are communicated through the Ethernet;
the BMS system and the EMS system are in communication connection through the Ethernet;
according to a preset communication mechanism, the information to be uploaded or the control signals to be issued are directly transmitted (the communication mechanism is in a normal communication working condition), bypass transmission (the communication mechanism is in a slight fault working condition) or shutdown and trip signals are directly transmitted through hard wiring (the communication mechanism is in a serious fault working condition) on the basis of priority.
Further, the preset communication mechanism (according to which the shutdown and trip signals are transmitted directly through hard wiring) is embodied as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the BMS detects a simultaneous interruption of the ethernet communication connection between (the BMS system) and (the BMS system) the EMS system and (the BMS system detects a simultaneous interruption of the ethernet communication connection between (the BMS system) the PCS system (defined herein as a critical fault condition), (the BMS system) transmitting a shutdown and trip signal to the PCS system via a hard wire;
when the PCS system detects a simultaneous interruption of the ethernet communication connection between the (PCS system) and the EMS system (defined herein as a critical fault condition of the communication mechanism), and the (PCS system detects a simultaneous interruption of the ethernet communication connection with the) BMS system, (the PCS system) transmits a shutdown and trip signal to the BMS system via a hard wire.
Further, the preset communication mechanism (for performing bypass transmission on the upload information required to be uploaded or the control signal required to be issued according to the preset communication mechanism) is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the Ethernet communication connection between any two systems of the PCS system, the BMS system and the EMS system is interrupted, the uploading information (required to be uploaded) or the control signal (required to be issued) originally transmitted by the path between the two systems is replaced by forwarding transmission through another system.
For example, when the PCS system detects that the communication with the EMS system is interrupted, the information uploaded to the EMS system is transmitted to the BMS system and forwarded to the EMS system by the BMS system; when the EMS system detects the communication interruption, the information which needs to be sent to the PCS system is forwarded by the BMS system. Similarly, when the communication between the BMS system and the EMS system is interrupted, information is forwarded by the PCS system.
Further, the preset communication mechanism (for directly transmitting the upload information required to be uploaded or the control signal required to be issued according to the preset communication mechanism) is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the ethernet communication connection between any two of the PCS system, the BMS system, and the EMS system is not interrupted, an upload message (to be uploaded) or a control signal (to be issued) is transmitted through a path between the two systems.
Further, the above-mentioned information includes, but is not limited to, switching value information, analog value information, non-electric quantity information, and operation signal and alarm signal.
Further, the control signal includes, but is not limited to, an operation parameter and an operation mode.
Furthermore, various signals are transmitted according to preset priority, wherein the priority of the alarm signal is the highest, and the priority of the control signal is higher than that of other non-control signals.
Further, the ethernet communication connection preferably adopts an IEC61850 communication protocol.
It should be noted that, referring to fig. 1 of the drawings, the PCS system includes a plurality of PCS modules, a transmission path (ethernet communication connection) is respectively provided between any one of the PCS modules and the EMS system, the BMS system includes a plurality of BMS modules, and a transmission path (ethernet communication connection) is respectively provided between any one of the BMS modules and the EMS system.
The number of the PCS modules and the number of the BMS modules are preferably kept consistent, and each PCS module only corresponds to one BMS module. And communication connection is respectively established between any PCS module and the corresponding BMS module through two paths of hard wiring and Ethernet which are mutually redundant.
First embodiment (energy storage power station communication method of high reliability).
Preferably, referring to fig. 1 of the drawings, the dashed lines represent connections via ethernet, and the solid lines represent hardwiring, the high reliability energy storage power station communication method is for adapting an energy storage power station comprising a BMS system, a PCS system and an EMS system, wherein:
the BMS system is used for monitoring the battery state and protecting the battery operation, so that the safe and reliable operation of the battery is ensured;
the PCS system is used for controlling power conversion;
the EMS system is used for monitoring the state of the whole station and controlling the power; the high-reliability energy storage power station communication method comprises the following steps:
step S1: simultaneously connecting two paths of a hard wire and an Ethernet which are mutually redundant between the PCS system and the BMS system to respectively establish communication connection;
step S2: accessing the Ethernet between the PCS system and the EMS system to establish Ethernet communication connection;
step S3: accessing the Ethernet between the BMS system and the EMS system to establish Ethernet communication connection;
step S4: according to a preset communication mechanism, the information to be uploaded or the control signals to be issued are directly transmitted (the communication mechanism is in a normal communication working condition), bypass transmission (the communication mechanism is in a slight fault working condition) or shutdown and trip signals are directly transmitted through hard wiring (the communication mechanism is in a serious fault working condition) on the basis of priority.
Further, step S4 is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the BMS detects a simultaneous interruption of the ethernet communication connection between (the BMS system) and (the BMS system) the EMS system and (the BMS system detects a simultaneous interruption of the ethernet communication connection between (the BMS system) the PCS system (defined herein as a critical fault condition), (the BMS system) transmitting a shutdown and trip signal to the PCS system via a hard wire;
when the PCS system detects a simultaneous interruption of the ethernet communication connection between the (PCS system) and the EMS system (defined herein as a critical fault condition of the communication mechanism), and the (PCS system detects a simultaneous interruption of the ethernet communication connection with the) BMS system, (the PCS system) transmits a shutdown and trip signal to the BMS system via a hard wire.
Further, step S4 is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the Ethernet communication connection between any two systems of the PCS system, the BMS system and the EMS system is interrupted, the uploading information (required to be uploaded) or the control signal (required to be issued) originally transmitted by the path between the two systems is replaced by forwarding transmission through another system.
For example, when the PCS system detects that the communication with the EMS system is interrupted, the information uploaded to the EMS system is transmitted to the BMS system and forwarded to the EMS system by the BMS system; when the EMS system detects the communication interruption, the information which needs to be sent to the PCS system is forwarded by the BMS system. Similarly, when the communication between the BMS system and the EMS system is interrupted, information is forwarded by the PCS system.
Further, step S4 is specifically implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the ethernet communication connection between any two of the PCS system, the BMS system, and the EMS system is not interrupted, an upload message (to be uploaded) or a control signal (to be issued) is transmitted through a path between the two systems.
Further, the above-mentioned information includes, but is not limited to, switching value information, analog value information, non-electric quantity information, and operation signal and alarm signal.
Further, the control signal includes, but is not limited to, an operation parameter and an operation mode.
Furthermore, various signals are transmitted according to preset priority, wherein the priority of the alarm signal is the highest, and the priority of the control signal is higher than that of other non-control signals.
Further, the ethernet communication connection preferably adopts an IEC61850 communication protocol.
It should be noted that, referring to fig. 1 of the drawings, the PCS system includes a plurality of PCS modules, a transmission path (ethernet communication connection) is respectively provided between any one of the PCS modules and the EMS system, the BMS system includes a plurality of BMS modules, and a transmission path (ethernet communication connection) is respectively provided between any one of the BMS modules and the EMS system.
The number of the PCS modules and the number of the BMS modules are preferably kept consistent, and each PCS module only corresponds to one BMS module. And communication connection is respectively established between any PCS module and the corresponding BMS module through two paths of hard wiring and Ethernet which are mutually redundant.
According to the embodiments, the invention discloses a high-reliability energy storage power station communication architecture and a method thereof, and the working principle of the architecture is explained as follows.
Specifically, the present invention first constructs a perfect communication architecture among the EMS system, the PCS system, and the BMS system. The PCS system and the BMS system are connected with the EMS system through Ethernet and adopt IEC61850 communication protocol; parallel redundant ethernet and hard-wired connections between the PCS system and the BMS system.
Specifically, a communication mechanism among the EMS system, the PCS system, and the BMS system is established. We define that the above communication mechanism includes three working conditions, specifically divided into three working conditions of normal communication, light fault and serious fault. Meanwhile, the priorities of various types of signals are preset. When the communication mechanism is in a normal working condition, the PCS system and the BMS system report information to the EMS system respectively, the EMS system issues instructions to the PCS system and the BMS system, and only alarm signals are transmitted between the PCS system and the BMS system. And when the communication mechanism is in a slight fault working condition, establishing a forwarding mechanism after detecting a fault line. When the above communication mechanism is in a serious fault condition, the shutdown and trip signals are directly transmitted through hard wiring.
Under normal working conditions, the BMS system and the PCS system upload information to the EMS system, wherein the upload information comprises but is not limited to switching value information, analog quantity information, non-electric quantity information, operation signals and alarm signals. The EMS system issues control signals to the PCS system and the BMS system, the control signals including but not limited to operation parameters and operation modes. Wherein the alarm signal can be transmitted simultaneously over a plurality of paths. The PCS system and the BMS system are simultaneously transmitted through two paths of hard wiring and Ethernet, so that the rapid response to the alarm signal can be reliably ensured. And, various signals are transmitted according to preset priority, wherein the priority of the alarm signal is the highest, and the priority of the control signal is higher than that of other non-control signals.
Further, the BMS system, the PCS system, and the EMS system each independently have a capability of detecting communication interruption, and when the ethernet communication is failed due to various reasons and communication of a certain path is interrupted, an information transmission path is changed. For example, when the PCS system detects that the communication with the EMS system is interrupted, the information uploaded to the EMS system is transmitted to the BMS system, and the BMS system forwards the information to the EMS system; when the EMS system detects the communication interruption, the information which needs to be sent to the PCS system is forwarded by the BMS system. Similarly, when the communication between the BMS system and the EMS system is interrupted, information is forwarded by the PCS system. If the BMS (PCS) system detects a simultaneous interruption of communication with the EMS system and the PCS system (BMS system), a shutdown and trip signal is transmitted to the PCS system (BMS system) through a hard wire for a critical fault condition.
It should be noted that the technical features such as IEC61850 communication protocol related to the present invention patent application should be regarded as the prior art, and the specific structure, the operation principle, the control mode and the spatial arrangement mode of the technical features may be conventional choices in the field, and should not be regarded as the invention point of the present invention patent, and the present invention patent is not further specifically described in detail.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. A high-reliability energy storage power station communication framework is adapted to an energy storage power station, wherein the energy storage power station comprises a BMS system, a PCS system and an EMS system, and the BMS system is used for monitoring the battery state and protecting the battery operation, so that the safe and reliable operation of the battery is ensured; the PCS system is used for controlling power conversion; the EMS system is used for monitoring the state of the whole station and controlling the power, and is characterized in that the high-reliability energy storage power station communication architecture comprises:
the PCS system and the BMS system are respectively communicated through two redundant hard-wired and Ethernet paths;
the PCS system and the EMS system are communicated through the Ethernet;
the BMS system and the EMS system are in communication connection through the Ethernet;
according to a preset communication mechanism, the information to be uploaded or the control signal to be issued is directly transmitted or transmitted by a bypass on the basis of priority, or the stop and trip signals are directly transmitted through hard wiring.
2. The high-reliability energy storage power station communication architecture of claim 1, wherein the preset communication mechanism is implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
transmitting a shutdown and trip signal to the PCS system through a hard wire when the BMS system detects a simultaneous interruption of an ethernet communication connection between the EMS system and the PCS system;
when the PCS system detects a simultaneous interruption of the Ethernet communication connection between the EMS system and the BMS system, a shutdown and trip signal is transmitted to the BMS system through a hard wire.
3. The high-reliability energy storage power station communication architecture of claim 1, wherein the preset communication mechanism is implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the Ethernet communication connection between any two systems of the PCS system, the BMS system and the EMS system is interrupted, the uplink information or the control signals originally transmitted by the path between the two systems are changed into forwarding transmission through another system.
4. The high-reliability energy storage power station communication architecture of claim 1, wherein the preset communication mechanism is implemented as the following steps:
the PCS system, the BMS system and the EMS system are all independent of each other and have the capability of detecting communication interruption;
when the ethernet communication connection between any two of the PCS system, the BMS system, and the EMS system is not interrupted, the uplink information or the control signal is transmitted through a path between the two systems.
5. A high-reliability energy storage power station communication method is used for adapting to an energy storage power station, wherein the energy storage power station comprises a BMS system, a PCS system and an EMS system, and the BMS system is used for monitoring the battery state and protecting the battery operation, so as to ensure the safe and reliable operation of the battery; the PCS system is used for controlling power conversion; the EMS system is used for monitoring the state of the whole station and controlling the power, and is characterized in that the high-reliability energy storage power station communication method comprises the following steps:
step S1: simultaneously connecting two paths of a hard wire and an Ethernet which are mutually redundant between the PCS system and the BMS system to respectively establish communication connection;
step S2: accessing the Ethernet between the PCS system and the EMS system to establish Ethernet communication connection;
step S3: accessing the Ethernet between the BMS system and the EMS system to establish Ethernet communication connection;
step S4: according to a preset communication mechanism, the information to be uploaded or the control signal to be issued is directly transmitted or transmitted by a bypass on the basis of priority, or the stop and trip signals are directly transmitted through hard wiring.
6. The method of claim 5, wherein the information sent to the power station includes information on switching value, analog value, non-electrical value, operation signal and alarm signal.
7. A high reliability energy storage power station communication method according to claim 6, characterized in that said control signals include operation parameters and operation mode.
8. The method of claim 7, wherein the signals are transmitted according to a predetermined priority, wherein the alarm signal has the highest priority, and the control signal has a higher priority than other non-control signals.
9. The high-reliability energy storage power station communication method of claim 5, wherein the Ethernet communication connection adopts IEC61850 communication protocol.
10. The high reliability energy storage power station communication method according to any of claims 5-9, wherein the PCS system comprises a plurality of PCS modules, each of the PCS modules and the EMS system has a transmission path for ethernet communication, the BMS system comprises a plurality of BMS modules, and each of the BMS modules and the EMS system has a transmission path for ethernet communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380371.2A CN111641261A (en) | 2020-05-08 | 2020-05-08 | High-reliability energy storage power station communication architecture and method thereof |
Applications Claiming Priority (1)
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| US11411391B2 (en) * | 2020-02-10 | 2022-08-09 | Samsung Sdi Co., Ltd. | Energy storage system protection system |
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