高压直流输电线路故障测距研究综述

YANG Lin

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高压直流输电线路故障测距研究综述

更新时间：2025-08-13

- 高压直流输电线路故障测距研究综述
- Automation of Electric Power Systems Vol. 42, Issue 8, Pages: 185-191(2018)
- 作者机构：
  
  电力系统及发电设备安全控制和仿真国家重点试验室, 清华大学,北京市,100084
- 作者简介：
- 基金信息：
- DOI：
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- Published：2018
- 稿件说明：
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YANG Lin. [J]. Automation of electric power systems, 2018, 42(8): 185-191.
DOI：

YANG Lin. [J]. Automation of electric power systems, 2018, 42(8): 185-191. DOI：

摘要

高压直流输电线路的距离长、跨越的地区地形地貌和环境气候差别很大，故障概率高。对故障测距的准确度要求也高。因此，提出了描述分布参数线路电气特征的波动方程作为故障测距原理的基础，针对时间、频率和空间三个角度，分别对提出的行波法、固有频率法和故障分析法进行了技术梳理与总结，明确了以行波法为主、固有频率法和故障分析法协助提高测距可靠性的整体技术方案，并就高阻接地弱故障启动、波头振荡、反射系数频变等行波测距法现存的问题给出了后续的改进思路和方案。

Abstract

High voltage direct current(HVDC)transmission line has a long distance

great differences in terrain

geomorphology

environment and climate. It has high probability of failure and needs high accuracy for fault location. So

the wave equation describing the electrical characteristics of the distributed parameter line is put forward

which is the basis of fault location principle. According to the time

frequency and space

the traveling wave methods

natural frequency methods and fault analysis methods are summarized. It makes clear that the main fault location method in real application should be traveling wave method

and the others assist to improve the reliability of overall fault location. Then

the follow-up ideas and programs to improve several existing problems are also presented

such as pickup in high resistance grounding fault

oscillation of initial wave head

and frequency change of reflection coefficient.

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