低温环境下高压断路器故障模拟  

Fault Simulation of High-Voltage Circuit Breaker in Low-Temperature Environment

作　　者：张健 张朋 徐惠 宫铭辰 王悦 张静[2] ZHANG Jian;ZHANG Peng;XU Hui;GONG Mingchen;WANG Yue;ZHANG Jing(Electric Power Research Institute of State Grid Heilongjiang Electric Power Co.,Ltd.,Harbin 150030,China;Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute,Wuhan 430070,China)

机构地区：[1]国网黑龙江省电力有限公司电力科学研究院,黑龙江哈尔滨150030 [2]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430070

出　　处：《中国电力》2023年第5期153-162,共10页Electric Power

基　　金：国网黑龙江省电力有限公司科技项目(522437200033)。

摘　　要：高压断路器是电力系统中的重要设备,发生故障会对电力系统的安全稳定运行造成影响。低温环境会影响断路器的开断性能,为研究低温下故障对断路器的影响,建立了液压弹簧机构和分合闸线圈模型,仿真分析了低温、分合闸线圈故障对分合闸时间与线圈电流的影响。搭建了低温环境下的故障模拟实验平台,在不同低温等级下进行了大量故障模拟实验。将断路器分合闸时间、分合闸线圈电流和振动信号边际谱能量作为特征量,分析其变化规律。研究发现:低温环境影响断路器的开断性能;断路器的分合闸时间随着温度的降低而增大;温度对线圈电流影响很小;–10℃以下振动信号边际谱能量变化较小。研究结果为低温环境下断路器的故障诊断提供了参考。High-voltage circuit breaker is important for power system,whose failure will affect the safe and stable operation.Lowtemperature environment would impact the breaking performance of circuit breakers.In order to study the influence of low temperature on circuit breaker fault detection,the hydraulic spring mechanism and opening/closing coil model were established.The effects of low-temperature and opening/closing coil faults on opening/closing time and coil current were simulated and analyzed.The fault simulation experiment platform in low-temperature environment was set up.A large number of fault simulation experiments were carried out under different low-temperature levels.The opening/closing time,opening/closing coil current and marginal spectral energy of vibration signal were taken as characteristic parameters.The variation laws of the characteristic parameters were analyzed.It is revealed that the low-temperature environment affects the breaking performance of the circuit breaker.The opening/closing time of the circuit breaker increases with the decrease of temperature.The temperature has little effect on the coil current.Meanwhile,the marginal spectral energy of vibration signal barely changes below–10℃.The results of this paper provide references for the fault diagnosis of circuit breakers in low-temperature environment.

关 键 词：高压断路器 低温环境 故障模拟 分合闸线圈电流 分合闸时间 振动信号 

分 类 号：TM561[电气工程—电器]