摘要
通过一起运行中开关发生反复跳跃现象的实例,分析了一种典型防跳设计回路存在的问题,指出当防跳继电器触点卡滞时,如果操作箱SHJ和防跳继电器存在配合问题,当线路运行中发生故障时,即使没有控制开关未复归或其触点、自动装置触点卡住等原因也会导致开关出现反复跳跃现象,而且这种跳跃现象难以控制,一般会造成开关一直跳跃到操作能量消失或防跳卡滞触点返回后方会停止,如果运行人员不能及时断开操作回路或储能回路,开关重新储能后还会继续合闸,这种跳跃现象较第一种跳跃现象更加严重,它不但严重损害断路器的使用寿命,还将严重损害输电线路及用电设备,对该典型防跳设计回路进行了分析,提出了解决办法。
Through the example that the running switch occurrs with repeated phenomenon of jumping,this paper analyzes the defects of a typical anti-jumping circuit design,and points out that when anti-jump relay node freezes and the line movement breaks down,if operation box SHJ and anti-jump relay exist coordination questions,even if there are no reasons such as the controlling switch not regression or its contact,the automatic device contact stuck,the phenomenon that the switch jumps repeatedly will still occur, moreover,this kind of jump phenomenon is hardly controlled, which generally causes the switch to jump continuously to operation energy vanishing or anti-jump hysteresis node cards to return.If the staff can not run off the operation circuit or storage circuit in time,the switch will continue to switch on after its re-storage.This kind of jump phenomenon is more serious compared with the first kind of jump phenomenon,it not only harms seriously the service life of the circuit breaker,but also does great harms to the transmission line and the current collector.This paper analyzes the typical anti-jumping circuit design and proposes the solution.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2009年第12期115-117,共3页
Power System Protection and Control
