基于传输延时补偿的继电保护网络采样同步方法

ZHANG Yanxu

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基于传输延时补偿的继电保护网络采样同步方法

更新时间：2025-08-13

- 基于传输延时补偿的继电保护网络采样同步方法
- Automation of Electric Power Systems Vol. 39, Issue 18, Pages: 81-85(2015)
- 作者机构：
  
  华南理工大学电力学院,广东省,广州市,510640
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2015
- 稿件说明：
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ZHANG Yanxu. [J]. Automation of electric power systems, 2015, 39(18): 81-85.
DOI：

ZHANG Yanxu. [J]. Automation of electric power systems, 2015, 39(18): 81-85. DOI：

摘要

为提高网络化继电保护的可靠性

文中提出并实现了基于网络采样传输延时补偿的不依赖于外部参考时钟源的网络采样同步方法。首先分析了网络采样传输延时的构成及其特性

建立了能够实现交换机延时测量和记录的交换机模型

研发了具有相应功能的交换机。搭建了实验测试平台

对其交换延时测量的精度进行了实验测试

同时对测量误差的来源进行了理论分析

测试结果和理论分析表明所开发的交换机具有较高的交换延时测量精度。基于交换延时的实时测量

给出了利用传输延时补偿实现网络采样同步的方法

并以一母线保护系统为例

对网络采样同步进行了应用测试。测试结果表明

基于网络采样传输延时补偿的网络采样同步方法能够有效实现网络采样的同步

保证网络化继电保护的可靠性。

Abstract

In order to improve the reliability of a relay protection system based on a communication system

a synchronization method based on the compensation for transmission delay is studied to achieve synchronization of network sampling independent of an external clock. The transmission delay composition and its features are analyzed first. Then the method of measuring and recording the switching delay is presented

followed by the development of the switch model. A prototype of the switch with the functions of switching delay measuring and recording is also developed. An experimental and theoretical analysis is conducted to study the accuracy of the switching delay measurement

and the results show that the switch developed has fairly high switching delay measuring accuracy. The principle of synchronization of network sampling is then presented. With a bus protection system as an example

the application of network sampling synchronization is tested

which shows that the proposed method is capable of effectively achieving synchronization of network sampling in ensuring reliability of the relay protection system. This work is supported by National Natural Science Foundation of China (No. 51377026) and Guangdong Provincial Natural Science Foundation of China (No. S2013010012885).

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