摘要
针对一起变电站高抗断路器跳闸案例,本文从一次设备、二次设备和保护原理3个方面查找原因,发现由于检修期间对高抗断路器频繁开合再加之设备投运年限长,引起断路器弹簧疲软,导致高抗零序阻抗匝间保护跳闸。通过调节断路器的弹簧压缩量,以满足断路器开关特性要求,为现场人员对老旧设备的运维管理、同类故障的分析及处理提供参考,避免此类事件发生,从而保证正常送电。
This paper combines a case of a circuit breaker trip of a high-voltage reactor in a substation and looks for it from three aspects of primary equipment,secondary equipment,and protection principles.Due to the long service life of the equipment and the frequent opening and closing of the high-voltage reactor circuit breaker during maintenance,Causes circuit breaker spring weakness and high-voltage reactor interturn protection trip.By adjusting the spring compression of the circuit breaker to meet the requirements of the circuit breaker's switching characteristics,it provides a reference for the field personnel to operate and maintain the old equipment,analyze and deal with similar failures,avoid such events,and ensure normal power transmission.
作者
刘欢庆
南东亮
王龙龙
汤小兵
张路
Liu Huanqing;Nan Dongliang;Wang Longlong;Tang Xiaobing;Zhang Lu(Electric Power Research Institute State Grid Xinjiang Electric Power Co.,Ltd,Urumqi 830011;Xinjiang Power Transmission and Transformation Co.,Ltd,Urumqi 830000;Nanjing SP-NICE Technology Development Co.,Ltd,Nanjing 211153)
出处
《电气技术》
2020年第10期127-132,共6页
Electrical Engineering
关键词
高压电抗器
断路器
零序阻抗匝间保护
弹簧压缩量
开关特性
high-voltage reactor
circuit breaker
zero sequence protection
spring compression
switching characteristics
