零序电抗继电器抗过渡电阻能力分析  

Ability Analysis of Zero-Sequence Reactance Relay Against Transient Resistance

作　　者：范春菊[1] 于会萍[1] 郁惟镛[1] 顾洁[1] 

机构地区：[1]上海交通大学电力学院,上海200240

出　　处：《电力自动化设备》2001年第10期7-10,共4页Electric Power Automation Equipment

摘　　要：详尽地分析了零序电抗继电器在各种运行方式下的抗过渡电阻能力 ,零序电抗继电器在理论上具有非常强的抗过渡电阻的能力。零序电抗继电器安装于单侧电源系统 ,双侧电源系统送电端、受电端时具有不同的抗过渡电阻能力 ,过渡电阻的大小直接影响着零序电抗继电器的动作行为。在数学分析基础上 ,提出了相应的改进方案 :ArgA角度判据法、快速测距法、检测电流方向法和U　″φ 判据法 。The ability of zero sequence relay against transient resistance under different running conditions is analyzed in detail.Theoretically,zero sequence relay has very strong ability against transient resistance.The ability against transient resistance of zero sequence relay,when it is installed on the transmission line of unilateral power system,is different from that when installed on the sending or receiving end of bilateral power system. The value of transient resistance directly influences the performance of zero sequence reactance relay. On the basis of mathematic analysis, some corresponding methods are proposed to improve its performance:ArgA criterion,quick fault location,current direction detection and U ″ φ criterion.All these methods make the zero sequence reactance relay have better ability against transient resistance under any operating condition.

关 键 词：零序电抗继电器 过渡电阻 高电压输电线路 接电保护 

分 类 号：TM588.4[电气工程—电器] TM726.1