文章摘要
杨林,王宾,董新洲.高压直流输电线路故障测距研究综述[J].电力系统自动化,2018,42(8):185-191. DOI: 10.7500/AEPS20170912011.
YANG Lin,WANG Bin,DONG Xinzhou.Overview of Fault Location Methods in High Voltage Direct Current Transmission Lines[J].Automation of Electric Power Systems,2018,42(8):185-191. DOI: 10.7500/AEPS20170912011.
高压直流输电线路故障测距研究综述
Overview of Fault Location Methods in High Voltage Direct Current Transmission Lines
DOI:10.7500/AEPS20170912011
关键词: 高压直流输电  故障测距  行波法  固有频率法  故障分析法
KeyWords: high voltage direct current transmission  fault location  traveling wave method  natural frequency method  fault analysis method
上网日期:2018-01-25
基金项目:国家重点研发计划资助项目(2016YFB0900600);国家自然科学基金资助项目(51477084);清华大学自主科研计划项目(2015THZ0)
作者单位E-mail
杨林 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  
王宾 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 binw_ee@mail.tsinghua.edu.cn 
董新洲 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  
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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