高压直流输电线路行波特性与保护定值整定

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高压直流输电线路行波特性与保护定值整定

更新时间：2025-08-13

- 高压直流输电线路行波特性与保护定值整定
- Automation of Electric Power Systems Vol. 39, Issue 16, Pages: 120-125(2015)
- 作者机构：
  
  新能源电力系统国家重点实验室, 华北电力大学,北京市,102206
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2015
- 稿件说明：
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GAO Benfeng. [J]. Automation of electric power systems, 2015, 39(16): 120-125.
DOI：

GAO Benfeng. [J]. Automation of electric power systems, 2015, 39(16): 120-125. DOI：

摘要

以基于行波幅值的高压直流输电线路行波保护方案为对象

研究了影响行波特性的几种因素。研究表明:故障位置远、接地过渡电阻大、降压运行以及换流器退出运行等因素均会造成行波幅值降低、变化率减小。结合向家坝—上海±800 kV特高压直流输电示范工程(简称向上工程)的行波保护逻辑

分析了行波波形出现瞬时扰动、剧烈振荡时保护逻辑的抗干扰性能

并研究了保护逻辑间的配合、判据判定方式、保护配置方案等因素对定值整定的影响。在此基础上提出了行波保护整定流程。最后

建立了向上工程的PSCAD／EMTDC仿真模型

验证了该整定流程的可行性。

Abstract

A traveling wave protection scheme for high voltage direct current (HVDC) transmission line based on the traveling wave amplitude is studied. Several factors influencing the traveling wave characteristics are discussed. The results show that a distant fault location from the measuring point

large grounded transition resistance

low-voltage operating mode

and converters out of service will all result in reduced traveling wave amplitude and variation rate. By referring to the traveling wave protection logic of the ±800 kV Xiangjiaba-Shanghai HVDC transmission demonstration project (Xiangjiaba-Shanghai project for short)

the anti-disturbance performance of the protection logic under instantaneous perturbation and strenuous oscillations is analyzed. In addition

the influences of protection logic cooperation

criterion judging methods and protection configuration schemes on the setting of protection value are treated. On this basis

a setting process of traveling wave protection is proposed. Finally

the feasibility of the process is verified through the PSCAD/EMTDC simulation model of the Xiangjiaba-Shanghai project.

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