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DL/T 1989-2019Electrochemical energy storage power station monitoring system and battery management system communication protocol (English PDF)

电化学储能电站监控系统与电池管理系统通信协议清晰版

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Issued by

National Energy Administration

Level / Type

National · Recommended

Issue date

June 4, 2019

Implementation date

October 1, 2019

Scope

DL/T 1989-2019 is the English-translated version of 电化学储能电站监控系统与电池管理系统通信协议清晰版.

DL/T 1989-2019 — This standard specifies the basic principles, interfaces and basics of communication between the monitoring system of electrochemical energy storage power stations and the battery management system.

In the communication protocol DL/T 860.81, DL/T 634.5104, GB/T 19582.3 message specifications.

This standard applies to lithium-ion batteries, lead-acid batteries, lead-carbon batteries as energy storage carriers, with a power of not less than 500kW and for electrochemical energy storage power stations with a fixed energy of not less than 500kWh, other types and scales of energy storage power stations can be implemented with reference to this standard.

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Document preview — DL/T 1989-2019

National Standard of the People's Republic of China

ICS: 27.180
Classification: F 19

Issued by: National Energy Administration

Preface
1 Scope
2 Normative Reference Documents
3 Terms and Definitions
4 Basic Regulations
5 Communication protocol structure
6 Communication protocol based on DL/T 860.81
7 Communication protocol based on DL/T 634.5104
8 Communication protocol based on GB/T 19582.3
Appendix A (informative appendix) Equipment information of battery management system for electrochemical energy storage power station
Appendix B (Normative Appendix) Definition of Logical Nodes of Electrochemical Energy Storage Power Station Equipment

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.

Ren.

This standard was proposed by the China Electricity Council.

This standard is under the jurisdiction of the National Electric Power Storage Standardization Technical Committee (SAC/TC 550).

1 Scope

This standard specifies the basic principles, interfaces and basics of communication between the monitoring system of electrochemical energy storage power stations and the battery management system.

In the communication protocol DL/T 860.81, DL/T 634.5104, GB/T 19582.3 message specifications.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version Applies to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 19582.1 Industrial Automation Network Specification Based on Modbus Protocol Part 1: Modbus Application Protocol GB/T 19582.3 Industrial automation network specification based on Modbus protocol Part 3: Modbus protocol in TCP/IP Implementation guide on GB/T 36276 Lithium-ion battery for power storage GB/T 36280 Lead-carbon battery for power storage DL/T 634.5101 Telecontrol Equipment and System Part 5-101.Transmission Protocol Basic Telecontrol Task Supporting Standard DL/T 634.5104 Telecontrol equipment and system Part 5-104.Transmission protocol adopts IEC of standard transmission protocol set 60870-5-101 network access DL/T 860.5 Substation communication network and system Part 5: Functional communication requirements and device model DL/T 860.6 Electric power automation communication network and system Part 6: Internal distribution of substations related to intelligent electronic equipment Set description language DL/T 860.71 Substation communication network and system Part 7-1.Basic communication structure of substation and feeder equipment Principles and models DL/T 860.72 Substation communication network and system Part 7-2.Basic communication structure of substation and feeder equipment Abstract Service Communication Interface (ACSI) DL/T 860.73 Substation communication network and system Part 7-3.Basic communication structure of substation and feeder equipment Public data class DL/T 860.74 Substation communication network and system Part 7-4.Basic communication structure of substation and feeder equipment Compatible with logical node class and data class DL/T 860.81 Substation communication network and system Part 8-1.Specific communication service mapping (SCSM) vs. MMS (ISO 9506-1 and ISO 9506-2) and ISO/IEC 8802-3 mapping

3 Terms and definitions

The terms in GB/T 36276 and GB/T 36280 and the following terms and definitions apply to this document.

Battery management unit (BMU) A system that manages a battery module, monitors the battery status (voltage, temperature, etc.), and provides a communication interface for the battery 3.2 Battery cluster management unit (BCMU) A system for daily management and monitoring of battery clusters.

Battery system management unit (BSMU) A system for daily management and monitoring of battery cluster management units.

Battery management system(BMS) Monitor the state of the battery (temperature, voltage, current, state of charge, etc.), provide a communication interface and protection system for the battery the system includes three levels. BMU, BCMU, and BSMU.

Power conversion system(PCS) A device for realizing real energy between the energy storage battery and the real current grid.

Electrochemical energy storage station(EESS) A power station that uses electrochemical cells as energy storage elements to store, implement and release electrical energy.

State of energy (SOE) Reflecting the battery's reverse energy state, it means that the battery's reverse energy is the rated energy of the battery.

State of health (SOH) Under the standard equipment, the battery is discharged at a certain rate in the full state and the energy released at the voltage and its corresponding mark the rated energy is as.

4 Basic regulations

4.1 The communication protocol between the monitoring system and the BMS should support the monitoring system to communicate with multiple BMSs at the same time to achieve information collection and control.

The number of supported access BMSs should not be less than 255.Each communication link should be independent of each other. The monitoring system should be Abnormal BMS communication should not affect the data interaction of other communication links in the system.

4.2 The monitoring system and BMS adopt Ethernet communication, and the communication protocol structure should meet the requirements of TCP/IP protocol.

4.3 The communication between the monitoring system and the BMS can adopt DL/T 860.81, DL/T 634.5104 or GB/T 19582.3 communication protocol.

4.4 The BMS information model and information point table can be expanded according to BMS functions and application requirements.

5 Communication protocol structure

5.1 The communication protocol structure should adopt a five-layer model based on the TCP/IP communication protocol, and the structure is shown in Table 1.

5.2 The physical layer should realize the physical connection between the monitoring system and the BMS, and should adopt shielded solid-paired wire or optical fiber connection. Monitoring Department the communication interface between the system and BMS should support the TCP/IP network interface. It is advisable to use the Ethernet with a communication rate of 100Mbps or 1000Mbps.

Network port.

5.3 The link layer should adopt a balanced transmission mode.

5.4 The network layer shall adopt the IP protocol. The Ethernet subnet mask in the station should be unified to 255.255.0.0 or 255.255.255.0;

The IP address of the BMS should be uniformly allocated and unique within the site.

5.5 The transport layer should adopt the client-server model to establish TCP connection, the monitoring system should be the client, and the BMS should be Service-Terminal. When using DL/T 860.81 communication protocol, the BMS port number should be 102.Using DL/T 634.5104 for communication protocol, the BMS port number should be 2404.When using the communication protocol of GB/T 19582.3, the BMS port number should be 502.

5.6 The application layer should be able to support system signal acquisition, monitoring, control and fault management, and should follow DL/T 860.71, respectively.

Requirements of DL/T 860.73, DL/T 860.74, DL/T 634.5104, GB/T 19582.1.

6 Communication protocol based on DL/T 860.81

6.1 The information model of BMS shall comply with the regulations of DL/T 860.5, DL/T 860.71, DL/T 860.73, DL/T 860.74 the information transmission service shall be selected according to the requirements of DL/T 860.72 and DL/T 860.81.

6.2 Modeling

6.2.1 The scope of modeling includes battery systems, battery clusters, battery modules, battery cells, etc., and battery system hierarchy

6.2.2 BMS module equipment information should include the existing information in Appendix A.1, but it is not limited to this information.

6.2.3 The data model, service and modeling method of BMS module shall meet the following requirements.

a) Model mapping. The modeling hierarchy should be based on battery system, battery cluster, battery module, battery cell and IED, LD, the relationship between LN and DO is mapped and modeled one by one, with a complete self-description function. The model hierarchy is shown in Figure 2;

Figure 2 Model hierarchy diagram

b) Access point definition. BMS communicates with the monitoring system through the MMS mechanism, and the server-side access point definition should comply with the regulations in Table 2.

set;

6.3 Service

The service shall meet the abstract communication service interface (ACSI) model, semantics and call these services defined in DL/T 860.72 the operation (including the parameters in the request and response) and other communication service requirements, and the following requirements should also be met.

a) Associated services.

1) Use associate (Associate), abnormal in (Abort) and release (Release) services;

2) Support to establish connections with no less than 12 clients at the same time; when the communication between the server and the client is unexpected when disconnected, the detection time of server-side communication failure should not be greater than 1 min.

b) Reporting service. when there is no special requirement, the information should be modeled as a non-cached report control block, using dchg Triggered on-the-spot with period to support total call;

c) Control service.

1) Use (selection with a), Cancel (cancel) and Operate (operation) service;

2) Adopt sbo-with-enhanced security control method;

3) The device should initialize the remote control related parameters;

7 Communication protocol based on DL/T 634.5104

7.1 The application layer message frame format and communication messages between the monitoring system and the BMS shall comply with the provisions of DL/T 634.5104.

7.2 Application layer message frame format

7.3 Communication message specification

7.3.1 Remote signaling information

Change remote signaling and full remote signaling should use ASDU01 single-point remote signaling to send, and SOE should use ASDU30 single-point with long time stamp the information type is uploaded. The format of the message sent by the remote communication information should conform to the error! The reference source was not found. 3, burst SOE information the format of the sent message should be in error! The reference source was not found. 4 regulations. The content of remote signaling information is shown in Table A.1 in Appendix A.

7.3.2 Telemetry information

Change telemetry and full telemetry should adopt ASDU13 short floating point number measurement, and the message format of telemetry information should conform to the error!

The reference source was not found. 5 regulations. The content of telemetry information is shown in Table A.1 in Appendix A.

7.3.3 Remote control commands

The remote control should adopt ASDU45 single-point control command operation with selection, and the sending format of the remote control command message should conform to the regulations in Table 6.

set. The content of remote control information is shown in Table A.1 in Appendix A.

7.3.4 Read command

The format of the message sent by the read command should conform to the error! The reference source was not found. 7 regulations.

7.3.5 Total Call

The sending format of the general call operation command message should conform to the error! The reference source was not found. 8 regulations.

7.3.6 Time synchronization command

The sending format of the timing operation command and reply message should conform to the error! The reference source was not found. 9 regulations.

8 Communication protocol based on GB/T 19582.3

8.1 The application layer message frame format and communication messages between the monitoring system and the BMS should comply with GB/T 19582.3 and GB/T the provisions of 19582.1.

8.2 Application layer message frame format

The application layer message frame format is shown in Figure 4.A frame of message is an application data unit (ADU), which is determined by the Modbus application protocol (MBAP) and protocol data unit (PDU). The longest length of ADU is 260 bytes, including 7 bytes of MBAP message header, PDU the maximum length is 253 bytes. The message byte follows the principle of sending the most significant byte first.

Figure 4 Application layer message frame format

a) The Modbus Application Protocol (MBAP) header should include a 2-byte transaction identifier and a 2-byte protocol identifier.

Character, 2-byte data length, 1-byte unit identifier. The MBAP definition method should conform to GB/T 19582.3 Provisions. See Table 10 for the definition of MBAP message header fields.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 9506 · ISO/IEC 8802

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