基于方向行波的电力线路保护与检测技术  

Power Line Protection and Detection Technology Based on Direction Travelling Wave

作　　者：刘琨 董新洲[2] 

机构地区：[1]广东电网电力调度控制中心,广东广州510075 [2]清华大学电力系统及发电设备安全控制和仿真国家重点实验室,北京100084

出　　处：《广东电力》2012年第10期22-27,32,共7页Guangdong Electric Power

基　　金：国家自然科学基金资助项目(50937003;51007045;51120175001);北京市自然科学基金资助项目(3102017)

摘　　要：行波保护与检测技术由于具有超高速的动作特性且不受故障点过渡电阻、系统振荡等因素的影响,在某些故障分析过程中,将行波分解为前行波和反行波这两种单一方向行波是很有必要的。总结国内外基于单一方向行波的故障判别和状态检测原理,分析了行波分解在各种电压等级输电线路和配电线路的故障启动、故障选线、故障选相、故障测距和故障方向判别等领域应用的必要性,并指出了单一方向行波的应用前景。It is necessary to decompose travelling wave for forward wave and back wave which is a kind of single direction travelling wave during the period of failure analysis because that travelling wave protection and detection technology are pro- vided with characteristic of ultra-high speed and will not be affected by transition resistance of the fault point or system oscil- lation. It concludes failure discrimination and state detection principles based on single direction travelling wave at home and abroad, analyzes necessity of application of travelling wave decomposition in fields like failure start, line selection for fault, phase selection for fault, fault location and fault direction discrimination and at last it points out the application prospect of single direction travelling wave.

关 键 词：行波保护 故障检测 方向行波 前行波 反行波 

分 类 号：TM773[电气工程—电力系统及自动化]