CN116566065B - Heterogeneous communication energy storage system layered architecture - Google Patents

Heterogeneous communication energy storage system layered architecture Download PDF

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Publication number
CN116566065B
CN116566065B CN202310580881.8A CN202310580881A CN116566065B CN 116566065 B CN116566065 B CN 116566065B CN 202310580881 A CN202310580881 A CN 202310580881A CN 116566065 B CN116566065 B CN 116566065B
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communication
energy storage
control system
communication line
abnormal
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CN116566065A (en
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陈填
廖飞龙
范良明
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Guangzhou Xingyi Smart Energy Technology Co ltd
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Guangzhou Xingyi Smart Energy Technology Co ltd
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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
    • H02J15/00—Systems for storing electric energy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • H02J13/00001—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 the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • 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
    • H02J13/00002—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 monitoring
    • 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
    • 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
    • H02J13/00028—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 involving the use of Internet protocols
    • 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
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

The application relates to a heterogeneous communication energy storage system layered architecture which comprises an acquisition executor AAU, a zone control system ZCS, a central control system CCS and a cloud server. The collection executor AAU collects operation information of the energy storage system, wherein the operation information comprises battery voltage, battery temperature, module temperature, system operation state, switch state, water inlet and outlet temperature, scram and other execution functions collected by the energy storage system sensor, and the execution functions comprise controlling a water-cooled unit electromagnetic valve, controlling battery balance on and off, controlling and the like; the zone control system ZCS comprises PCS control information, BMS control information and TMS control information of a battery cluster level; the central control system is responsible for overall information processing and calculation, and the operation safety of the cell stack system is ensured by using an edge calculation algorithm. The cloud server receives the information of each battery power station through the communication interface, comprehensively analyzes and displays big data, and can issue instructions to the central controller after analysis.

Description

Heterogeneous communication energy storage system layered architecture
Technical Field
The application relates to the technical field of energy storage battery architectures, in particular to a heterogeneous communication energy storage system layered architecture.
Background
The energy storage power station is typically comprised of a battery system, a power conversion system (PowerConversion System, PCS) and an energy management system (Energy Management System, EMS). The battery system consists of an energy storage battery and a matched battery management system (Battery Management System, BMS). Three-party data interaction is formed among the BMS, the PCS and the EMS, the BMS system receives the monitoring system instruction and the PCS system instruction, and data conflict or failure occurs in one day, so that rights and responsibilities are unclear.
Referring to fig. 3, a typical architecture diagram of a battery management system of a lithium battery and a lead storage battery, the existing technical scheme includes a battery matrix controller BAU1, where the battery matrix controller BAU is respectively connected with a plurality of battery cluster controllers BCU in a communication manner through an ethernet, each battery cluster controller BCU is respectively connected with a plurality of battery module controllers BMU in a communication manner through a corresponding CAN bus, each battery module controller BMU is respectively connected with a battery pack, and the battery matrix controller BAU is also connected with a converter PCS in a communication manner. The common communication is then single-wire communication, such as CAN/RS 485/Ethernet, etc.
A common energy storage system architecture is a distributed architecture, with separate control among the controllers. There are therefore the following disadvantages:
the energy storage system has non-uniform communication architecture, and multiple communication modes possibly exist in the same system, so that the stability of the system is reduced, and meanwhile, the testing difficulty of operation and maintenance personnel is increased;
under the distributed architecture, communication among different systems has delay, and inconsistency exists from an upper control instruction to lower execution;
subsequent software upgrades are difficult.
The communication between the energy storage systems is single-wire communication, system disconnection is easy to occur under the condition that the communication quality is affected, and the reliability of data between the data is low.
Disclosure of Invention
The application aims to at least solve one of the defects in the prior art and provides a layering architecture of a heterogeneous communication energy storage system.
In order to achieve the above purpose, the present application adopts the following technical scheme:
specifically, a heterogeneous communication energy storage system layered architecture is provided, which comprises the following steps:
a central control system CCS;
the system comprises a plurality of zone control systems ZCS, wherein the ZCS and the central control system CCS are in communication connection through a dual communication architecture and are used for controlling the battery cluster level;
the plurality of acquisition executors AAU are arranged at the energy storage systems and respectively establish communication connection with the corresponding zone control systems ZCS, and are used for acquiring the data of the energy storage systems and transmitting the data of the energy storage systems to the corresponding zone control systems ZCS.
Further, specifically, performing the control of the battery cluster level includes performing SOC, SOH, SOE, grid power conversion, charge and discharge power control, and thermal management calculations based on the received energy storage system data.
Further, specifically, information interaction is performed between the central control system CCS and the zone control system ZCS through ethernet, CAN or RS485, and information interaction is performed between the zone control system ZCS and its corresponding acquisition executor AAU through CAN or RS 485.
Further, the heterogeneous communication energy storage system layered architecture further comprises,
the cloud server is in communication connection with the central control system CCS through 5G or Ethernet and is used for receiving data information uploaded by the central control system CCS.
The application also provides a communication method of the heterogeneous communication energy storage system layered architecture, which is applied to the heterogeneous communication energy storage system layered architecture and comprises the following steps:
step 110, an acquisition executor AAU acquires energy storage system data by acquiring the energy storage system data;
step 120, the acquired energy storage system data is uploaded to a zone control system ZCS by an acquisition executor AAU;
130, the ZCS performs battery cluster level control based on the energy storage system data;
in step 140, the zone control system ZCS uploads data to the central control system CCS through the dual communication architecture.
Further, the dual communication architecture has the following principle of operation,
the two communication lines of the first communication line and the second communication line are shared when the zone control system ZCS communicates with the central control system CCS,
judging whether any one of the first communication line and the second communication line has abnormal communication,
if the communication rate is not available, acquiring and comparing the communication rates of the first communication line and the second communication line, taking the communication line with high communication rate as a transmission line, and completing information interaction between the zone control system ZCS and the central control system CCS by the transmission line;
if so, diagnosing the other communication line synchronously, judging whether the other communication line has abnormal communication,
if the other communication line has no abnormal communication condition, switching the transmission line to the other communication line, continuously monitoring the abnormal communication line, if the abnormal communication line resumes normal communication, switching to judging whether any one of the first communication line and the second communication line has abnormal communication operation,
if the other communication line has abnormal communication, the communication is interrupted and the alarm is given.
Further, specifically, the process of judging whether or not there is a communication abnormality in any one of the first communication line and the second communication line includes,
for any of the communication lines,
acquiring the period of a message, and judging that the message communication is abnormal if the period is not in a preset range;
acquiring the length of a message and whether network interruption occurs in message transmission, and judging that the received/transmitted message is abnormal if at least any condition exists that the length of the message exceeds a specified length or network interruption occurs;
obtaining a processing logic result of the message, and judging that a message processing logic error exists if the condition that the message is not normally analyzed exists;
acquiring the number of error frames, and judging that the error frames are abnormal if the number exceeds a threshold value;
when at least one of message communication abnormality, message receiving/sending abnormality, message processing logic error or error frame abnormality exists, the communication abnormality is judged.
Further, specifically, a method for judging whether a communication line with abnormal communication is restored to normal communication, comprising,
continuously acquiring related data in the communication lines with abnormal communication by taking a process of judging whether communication abnormality exists in any communication line as a standard, and recording a duration T of occurrence of communication abnormality from the communication lines;
to be used forAdjusting the preset range, the specified length and the threshold value for the adjustment coefficient to obtain the adjusted preset range, the adjusted specified length and the adjusted threshold value, wherein alpha is an adjustment factor and can be set manually;
judging whether the communication abnormal communication line exists or not based on the related data through the adjusted preset range, the regulated length and the threshold value, if not, judging that the communication abnormal communication line resumes normal communication, and if still exists, continuously monitoring.
The beneficial effects of the application are as follows:
the application provides a heterogeneous communication energy storage system layering architecture which comprises an acquisition executor AAU, a zone control system ZCS and a central control system CCS, wherein a communication mode between the zone control system ZCS of the main control system and the central control system CCS uses double-line redundancy communication, so that the system communication quality and communication safety are ensured, and the heterogeneous communication energy storage system layering architecture can be used for data verification. The heterogeneous communication energy storage system layered architecture provided by the application provides a layered centralized control mode, improves the communication stability and reduces delay; an edge calculation algorithm is built in the central controller, so that safety is improved; the subsequent software upgrading is facilitated through the integrated control method and the integrated control device; the dual communication redundancy is newly added in the energy storage system architecture, and the data reliability and the communication quality are improved.
Drawings
The above and other features of the present disclosure will become more apparent from the detailed description of the embodiments illustrated in the accompanying drawings, in which like reference numerals designate like or similar elements, and it is apparent that the drawings in the following description are only some examples of the present disclosure, and other drawings may be obtained from these drawings by one of ordinary skill in the art without inventive effort, without departing from the scope of the present disclosure, in which
In the figure:
FIG. 1 is a schematic diagram of a hierarchical architecture of a heterogeneous communication energy storage system according to the present application;
FIG. 2 is a communication flow diagram of a heterogeneous communication energy storage system layered architecture according to the present application;
fig. 3 is a schematic diagram of a typical battery management system for lithium batteries and lead storage batteries.
Detailed Description
The conception, specific structure, and technical effects produced by the present application will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
Referring to fig. 1, embodiment 1 of the present application provides a heterogeneous communication energy storage system layered architecture, which includes the following steps:
a central control system CCS; the central control system CCS is internally provided with an edge calculation algorithm and a battery stack level diagnosis function; ZCS built-in battery cluster level diagnosis function
The system comprises a plurality of zone control systems ZCS, wherein the ZCS and the central control system CCS are in communication connection through a dual communication architecture and are used for controlling the battery cluster level;
the plurality of acquisition executors AAU are arranged at the energy storage system, respectively establish communication connection with the corresponding zone control system ZCS, are used for acquiring the data of the energy storage system, and transmit the data of the energy storage system to the corresponding zone control system ZCS, and can be used as a preferable acquisition executor, and can be internally provided with a hardware security module HSM to improve hardware security;
in addition, the energy storage battery clusters are sequentially held by hands, so that cooperative control of n energy storage battery clusters can be expanded. In the single power station control, the control can be performed without a cloud server, and in the multi-power station control, the control can be performed by adding a cloud server.
As a preferred embodiment of the present application, specifically, performing the control of the battery cluster level includes performing SOC, SOH, SOE, grid power conversion, charge and discharge power control, and thermal management calculations based on the received energy storage system data.
In the preferred embodiment, a control type of a part of the battery cluster level is given, which is a well-known technology in the art.
As a preferred embodiment of the present application, specifically, information interaction is performed between the central control system CCS and the zone control system ZCS through ethernet, CAN or RS485, and information interaction is performed between the zone control system ZCS and its corresponding acquisition executor AAU through CAN or RS 485.
In this embodiment 1, an energy storage system architecture for distributed+layered+redundant communication control is provided; the system comprises an acquisition executor AAU, a zone control system ZCS, a central control system CCS and a cloud server. The collection executor AAU collects operation information of the energy storage system, wherein the operation information comprises battery voltage, battery temperature, module temperature, system problems, on-off state, water inlet and outlet temperature, scram and other functions collected by the energy storage system sensor, and executive functions such as controlling a solenoid valve of the water cooling unit, controlling balanced opening and closing of a battery, controlling and the like; the zone control system ZCS comprises PCS control information, BMS control information and TMS control information of a battery cluster level; the central control system is responsible for overall information processing and calculation, and the operation safety of the cell stack system is ensured by using an edge calculation algorithm. The cloud server receives the information of each battery power station through the communication interface, comprehensively analyzes and displays big data, and can issue instructions to the central controller after analysis.
In addition, double-wire redundancy communication is used for the communication mode between the main control systems (mainly between the zone control system ZCS and the central control system CCS), so that the system communication quality and the communication safety are ensured, and the method can be used for data verification.
As a preferred embodiment of the present application, the heterogeneous communication energy storage system layered architecture further comprises,
the cloud server is in communication connection with the central control system CCS through 5G or Ethernet and is used for receiving data information uploaded by the central control system CCS.
Referring to fig. 2, the application further provides a communication method of the heterogeneous communication energy storage system layered architecture, which is applied to the heterogeneous communication energy storage system layered architecture and comprises the following steps:
step 110, an acquisition executor AAU acquires energy storage system data by acquiring the energy storage system data;
step 120, the acquired energy storage system data is uploaded to a zone control system ZCS by an acquisition executor AAU;
130, the ZCS performs battery cluster level control based on the energy storage system data;
in step 140, the zone control system ZCS uploads data to the central control system CCS through the dual communication architecture.
As a preferred embodiment of the present application, the dual communication architecture specifically works as follows,
the two communication lines of the first communication line and the second communication line are shared when the zone control system ZCS communicates with the central control system CCS,
judging whether any one of the first communication line and the second communication line has abnormal communication,
if the communication rate is not available, acquiring and comparing the communication rates of the first communication line and the second communication line, taking the communication line with high communication rate as a transmission line, and completing information interaction between the zone control system ZCS and the central control system CCS by the transmission line; at this time, the first communication line and the second communication line are in normal condition, at this time, the data transmitted by the first communication line and the second communication line are the same, only the data transmission distinction exists, and at this stage, the data with fast communication rate is generally selected as the processing data of the central controller, so as to ensure the low time delay of the system transmission;
if so, diagnosing the other communication line synchronously, judging whether the other communication line has abnormal communication,
if the other communication line has no abnormal communication condition, switching the transmission line to the other communication line, continuously monitoring the abnormal communication line, if the abnormal communication line resumes normal communication, switching to judging whether any one of the first communication line and the second communication line has abnormal communication operation,
if the other communication line has abnormal communication condition, the communication is interrupted and the alarm is given,
at this time, at least one of the first communication line and the second communication line is in an abnormal condition, at this time, if only one of the first communication line and the second communication line is abnormal, it is judged that the data transmission line is switched to the other communication line without the abnormal condition, and the two jumper lines are continuously monitored, once both the two lines are recovered to normal condition operation, the two lines are re-switched to normal condition operation, a communication line with the fastest transmission rate is found for data transmission, and the abnormal monitoring is continuously performed, and if both the two lines are abnormal in communication, an alarm is given to inform the corresponding administrator IP of problem processing.
As a preferred embodiment of the present application, specifically, the process of judging whether or not there is a communication abnormality in any one of the first communication line and the second communication line includes,
for any of the communication lines,
acquiring the period of a message, and judging that the message communication is abnormal if the period is not in a preset range;
acquiring the length of a message and whether network interruption occurs in message transmission, and judging that the received/transmitted message is abnormal if at least any condition exists that the length of the message exceeds a specified length or network interruption occurs;
obtaining a processing logic result of the message, and judging that a message processing logic error exists if the condition that the message is not normally analyzed exists;
acquiring the number of error frames, and judging that the error frames are abnormal if the number exceeds a threshold value;
when at least one of message communication abnormality, message receiving/sending abnormality, message processing logic error or error frame abnormality exists, the communication abnormality is judged.
In the preferred embodiment, the abnormal mode is determined by different communication modes, and the following is a more general example for the above determination process:
message communication anomalies, e.g. message information with a default 100ms period exceeding or falling below a certain percentage threshold, assuming 15%, i.e. messages within a period of 85 ms-115 ms are recorded as normal, data outside the range of the period are recorded as anomalies
Receiving/transmitting message abnormality, the message length exceeds the specified length; the message data contains invalid data or control information; network interruption occurs in message transmission (in addition, TCP/IP protocol can judge whether network connection is effective or not, RS485 can judge whether the network connection is effective or not through a check form)
Message handling logic errors (messages not normally parsed, e.g. overrun or invalid parsing)
Error frame judgment, such as transmitting error frame when CAN bus is abnormal, judging as abnormal when receiving excessive error frame
As a preferred embodiment of the present application, in particular, a method of judging whether a communication line with abnormal communication resumes normal communication, includes,
continuously acquiring related data in the communication lines with abnormal communication by taking a process of judging whether communication abnormality exists in any communication line as a standard, and recording a duration T of occurrence of communication abnormality from the communication lines;
to be used forAdjusting the preset range, the specified length and the threshold value for the adjustment coefficient to obtain the adjusted preset range, the adjusted specified length and the adjusted threshold value, wherein alpha is an adjustment factor and can be set manually;
judging whether the communication abnormal communication line exists or not based on the related data through the adjusted preset range, the regulated length and the threshold value, if not, judging that the communication abnormal communication line resumes normal communication, and if still exists, continuously monitoring.
At the bookIn the preferred embodiment, when judging whether or not the communication line with abnormal communication is restored to normal communication, the whole judging process is the same as the previous judgment, but the longer the failure time is, the higher the degree of the hidden trouble is, soIn order to properly reduce the judgment threshold value of the adjustment coefficient, the relevant threshold value is dynamically adjusted, which is equivalent to ensuring the communication stability during self-healing to a certain extent.
While the present application has been described in considerable detail and with particularity with respect to several described embodiments, it is not intended to be limited to any such detail or embodiments or any particular embodiment, but is to be construed as providing broad interpretation of such claims by reference to the appended claims in view of the prior art so as to effectively encompass the intended scope of the application. Furthermore, the foregoing description of the application has been presented in its embodiments contemplated by the inventors for the purpose of providing a useful description, and for the purposes of providing a non-essential modification of the application that may not be presently contemplated, may represent an equivalent modification of the application.
The present application is not limited to the above embodiments, but is merely preferred embodiments of the present application, and the present application should be construed as being limited to the above embodiments as long as the technical effects of the present application are achieved by the same means. Various modifications and variations are possible in the technical solution and/or in the embodiments within the scope of the application.

Claims (3)

1. The communication method of the heterogeneous communication energy storage system layered architecture is characterized by being applied to the heterogeneous communication energy storage system layered architecture, and specifically, the heterogeneous communication energy storage system layered architecture comprises the following steps of
A central control system CCS;
the system comprises a plurality of zone control systems ZCS, wherein the ZCS and the central control system CCS are in communication connection through a dual communication architecture and are used for controlling the battery cluster level;
the plurality of acquisition executors AAU are arranged at the energy storage systems, respectively establish communication connection with the corresponding zone control systems ZCS, and are used for acquiring the data of the energy storage systems and transmitting the data of the energy storage systems to the corresponding zone control systems ZCS;
specifically, the control of the battery cluster level comprises the calculation of SOC, SOH, SOE, grid power conversion, charge and discharge power control and thermal management based on the received energy storage system data;
specifically, the central control system CCS and the zone control system ZCS perform information interaction through ethernet, CAN or RS485, and the zone control system ZCS and the corresponding acquisition executor AAU perform information interaction through CAN or RS 485;
the heterogeneous communication energy storage system layered architecture further comprises,
the cloud server is in communication connection with the central control system CCS through 5G or Ethernet and is used for receiving data information uploaded by the central control system CCS;
the communication method comprises the following steps:
step 110, an acquisition executor AAU acquires energy storage system data by acquiring the energy storage system data;
step 120, the acquired energy storage system data is uploaded to a zone control system ZCS by an acquisition executor AAU;
130, the ZCS performs battery cluster level control based on the energy storage system data;
step 140, the zone control system ZCS uploads data to the central control system CCS through the dual communication architecture;
specifically, the dual communication architecture has the following principle of action,
the two communication lines of the first communication line and the second communication line are shared when the zone control system ZCS communicates with the central control system CCS,
judging whether any one of the first communication line and the second communication line has abnormal communication,
if the communication rate is not available, acquiring and comparing the communication rates of the first communication line and the second communication line, taking the communication line with high communication rate as a transmission line, and completing information interaction between the zone control system ZCS and the central control system CCS by the transmission line;
if so, diagnosing the other communication line synchronously, judging whether the other communication line has abnormal communication,
if the other communication line has no abnormal communication condition, switching the transmission line to the other communication line, continuously monitoring the abnormal communication line, if the abnormal communication line resumes normal communication, switching to judging whether any one of the first communication line and the second communication line has abnormal communication operation,
if the other communication line has abnormal communication, the communication is interrupted and the alarm is given.
2. The method of claim 1, wherein determining whether any one of the first communication line and the second communication line has a communication anomaly comprises,
for any of the communication lines,
acquiring the period of a message, and judging that the message communication is abnormal if the period is not in a preset range;
acquiring the length of a message and whether network interruption occurs in message transmission, and judging that the received/transmitted message is abnormal if at least any condition exists that the length of the message exceeds a specified length or network interruption occurs;
obtaining a processing logic result of the message, and judging that a message processing logic error exists if the condition that the message is not normally analyzed exists;
acquiring the number of error frames, and judging that the error frames are abnormal if the number exceeds a threshold value;
when at least one of message communication abnormality, message receiving/sending abnormality, message processing logic error or error frame abnormality exists, the communication abnormality is judged.
3. The method for communication of a heterogeneous communication energy storage system layered architecture according to claim 2, wherein the method for determining whether the communication line with abnormal communication is restored to normal communication comprises,
continuously acquiring related data in the communication lines with abnormal communication by taking a process of judging whether communication abnormality exists in any communication line as a standard, and recording a duration T of occurrence of communication abnormality from the communication lines;
to be used forAdjusting the preset range, the specified length and the threshold value for the adjustment coefficient to obtain the adjusted preset range, the adjusted specified length and the adjusted threshold value, wherein alpha is an adjustment factor and can be set manually;
judging whether the communication abnormal communication line exists or not based on the related data through the adjusted preset range, the regulated length and the threshold value, if not, judging that the communication abnormal communication line resumes normal communication, and if still exists, continuously monitoring.
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