GB/T 26866-2022Testing specifications of power time synchronism systems (English PDF)

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 of Standardization Documents" drafted.

This document replaces GB/T 26866-2011 "Testing Specification for Time Synchronization System of Electric Power System", which is consistent with GB/T 26866-2011 In addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) Modified normative references (see Chapter 2, Chapter 2 of the 2011 edition);

b) Added the terms "time deviation" and "monitoring unit" (see 3.1, 3.2);

c) Added "abbreviations" (see Chapter 4);

d) The main instruments "PTP switch" and "network tester" were added (see 5.2.2.8, 5.2.2.9);

e) Changed the qualification criteria in "punctuality performance test" (see 5.2.4, 4.2.4 of the 2011 edition);

f) Changed the whole group method of time synchronization system in "The whole group test of time synchronization system" (see 5.3, 4.3 of the 2011 edition);

g) Changed the inspection items in "Inspection items" (see 6.4, 5.4 of the 2011 edition);

h) Added "PTP interface", "Data model detection", "Location information analysis function detection", "Time source selection function detection" and "Clock detection" Monitoring Function Test" (see 5.2.3.7.2, 5.2.10, 5.2.11, 5.2.12, 5.2.13).

Introduction

At present, time synchronization devices have been widely used in power systems. With the deepening and popularization of applications, time synchronization devices have improved In order to standardize the application of time synchronization devices in the power industry, the DL/T 1100.1-2018 has been released for Product performance, function, environmental adaptability and other aspects put forward specific requirements. This document is based on the technology proposed in DL/T 1100.1-2018 It is required to give the corresponding detection methods and determine the inspection rules, so as to provide standard basis for the product inspection and quality supervision of the time synchronization device.

1 Scope

This document specifies the test conditions, test items (including type test, factory inspection and on-site inspection) of the power time synchronization system and its Inspection method, test result determination method and inspection period requirements.

This document applies to the development, production, testing and inspection of power time synchronization systems.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 7261-2016 Basic test methods for relay protection and safety automatic devices

GB/T 13729-2019 Telecontrol terminal equipment

GB/T 17626.2-2018 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Immunity Test

GB/T 17626.3-2016 Electromagnetic compatibility test and measurement technology Radio frequency electromagnetic field radiation immunity test

GB/T 17626.4-2018 Electromagnetic Compatibility Test and Measurement Technology Electrical Fast Transient Burst Immunity Test

GB/T 17626.5-2019 Electromagnetic Compatibility Test and Measurement Technology Surge (Shock) Immunity Test

GB/T 17626.8-2006 Electromagnetic Compatibility Test and Measurement Technology Power Frequency Magnetic Field Immunity Test

GB/T 17626.9-2011 Electromagnetic Compatibility Test and Measurement Technology Pulse Magnetic Field Immunity Test

GB/T 17626.10-2017 Electromagnetic Compatibility Test and Measurement Technology Damped Oscillating Magnetic Field Immunity Test

GB/T 17626.18-2016 Electromagnetic Compatibility Test and Measurement Technology Damped Oscillating Wave Immunity Test

GB/T 19520.12-2009 Mechanical Structure of Electronic Equipment 482.6mm (19in) Series Mechanical Structure Dimensions Part 3-101. Box and its plugins

GB/T 25931-2010 Precision Clock Synchronization Protocol for Network Measurement and Control Systems

GB/T 33591-2017 Technical Specification for Time Synchronization System and Equipment of Intelligent Substation

DL/T 860 (all parts) Electric power automation communication networks and systems

DL/T 1100.1-2018 Time Synchronization System for Power Systems Part 1: Technical Specifications

DL/T 1100.6-2018 Time synchronization system of power system Part 6: Monitoring specification

3 Terms and Definitions

The following terms and definitions apply to this document.