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GB/T 45568-2025Information specification for relay protection (English PDF)

继电保护信息规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 25, 2025

Implementation date

August 1, 2025

Scope

GB/T 45568-2025 is the English-translated version of 继电保护信息规范.

GB/T 45568-2025 is the Chinese national standard covering what a protection relay in a substation of 110 kV and above has to report — the classification of the information and the form it takes, its generation, storage and upload and the log that records it, the action, alarm, monitoring, status change, ledger and setting content, the intermediate node data that shows why a relay decided as it did, the information model, the configuration file, and the operator interface. First edition, under the China Electricity Council. In force from 1 August 2025. Issued on 25 April 2025, it has been in force since 1 August 2025.

Document preview — GB/T 45568-2025

National Standard of the People's Republic of China

ICS: 29.240
Classification: K 45

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface... III 1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Abbreviations2
5 General requirements2
6 Classification and requirements of relay protection information3
6.1 Classification of relay protection information content3
6.2 Relay protection information expression form3
6.3 Generation, storage and upload of relay protection information3
6.4 Relay protection log record4
7 Relay protection information content4
7.1 Relay protection action information4
7.2 Relay protection alarm information5
7.3 Relay protection online monitoring information5
7.4 Relay protection status change information6
7.5 Relay protection equipment ledger information6
7.6 Relay protection setting information6
7.7 Relay protection intermediate node information6
8 Requirements for relay protection information model7
9 Relay protection configuration file information7
10 Human Machine Interface7
11 Relay protection information review7
References9

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the China Electricity Council.

This document was drafted by: State Grid Zhejiang Electric Power Co., Ltd., State Grid Zhejiang Electric Power Co., Ltd. Jiaxing Power Supply Company, State Grid Control Center, China Southern Power Grid Power Dispatching and Control Center, State Grid Corporation of China East China Branch, State Grid Corporation of China North China Branch Ministry, State Grid Henan Electric Power Company, State Grid Liaoning Electric Power Company, State Grid Zhejiang Electric Power Company Hangzhou Power Supply Company, State Grid Huzhou Power Supply Company of Zhejiang Electric Power Co., Ltd., Nanjing Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd., Nanjing NARI Relay Protection Electric Co., Ltd.

Company, Beijing Sifang Relay Protection Automation Co., Ltd., Guodian Nanjing Automation Co., Ltd., Guodian Nanrui Technology Co., Ltd.

Co., Ltd., Xuji Electric Co., Ltd., Changyuan Shenrui Jibao Automation Co., Ltd., Shanghai Siyuan Hongrui Automation Co., Ltd., China Electric Power Science Research Institute Co., Ltd., Datang Hydropower Science and Technology Research Institute Co., Ltd., and Yunnan Power Grid Co., Ltd. Electric Power Research Institute.

The main drafters of this document are: Zhou Wenhai, Pan Wulue, Zhou Fuqiang, Qiu Yutao, Fang Yudong, Xu Kai, Shi Zebing, Jiang Weijian, Xu Peng, Liu Zhongping, Chen Jianmin, Liu Yimin, Dong Peng, Sheng Haihua, Tian Baojiang, Yu You, Huang Zhihua, Chen Hao, Li Li, Xu Xiaochun, Nie Juanhong, Chen Qi, Zheng Xiaojiang, Li Jia, Dong Xintao, Yu Weiguo, Wang Xuedong, Miao Wenbin, Yang Guosheng, Zhan Zhihua, Zheng Yongkang, Zhou Xin.

Relay protection information specification

1 Scope

This document specifies the general requirements, classification and requirements, content, information model requirements, configuration file information, human-machine Interface and information retrieval content.

This document applies to relay protection devices (hereinafter referred to as "devices") for AC 110 kV (66 kV) and above substations.

It is an important basis for the design, manufacture, inspection and operation of related equipment. Other voltage levels of substations, converter stations, power plants, etc. implement.

Note. "Relay protection" in this document refers to relay protection related systems and equipment.

2 Normative references

GB/T 14285

GB/T 14598.24-2017

GB/T 21711.1

GB/T 32890

IEC 61850

GB/T 34122

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 relay protection information

A collection of information output by the device that can reflect the operating status of the power system, the working status of the secondary circuit and the working status of the device itself.

Note. Relay protection information includes action information, alarm information, etc.

3.2 intermediate node information

Protects information generated within the device after startup.

Note. The intermediate node information includes the key logic points of the protection function, state quantities, and calculated analog quantities of the protection elements.

3.3 Intelligent electronic device; IED

Any device consisting of one or more processors that has the capability to receive and transmit data from an external source or to control an external source, i.e., an electronic multifunction Instruments, microcomputer protection, controllers, which can perform one or more logical contact tasks within the scope of the interface under specific conditions. entity.

[Source. DL/Z 860.2-2006, 2.59, modified]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 14598.24-2017 · GB/T 21711.1 · IEC 61850

Editions of GB/T 45568

Edition	Title	Revision	Status
GB/T 45568-2025	Information specification for relay protection	current edition	Current

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