高压隔离开关的合闸故障实时监测方法分析  

Analysis of Real-time Monitoring Methods for Closing Faults of High-voltage Isolation Switches

作　　者：王正玉 赵太庄 WANG Zhengyu;ZHAO Taizhuang(State Grid Ningxia Electric Power Co.,Ltd.,Shizuishan Power Supply Company,Ningxia 753000,China)

机构地区：[1]国网宁夏电力有限公司石嘴山供电公司,宁夏753000

出　　处：《电子技术（上海）》2023年第7期414-416,共3页Electronic Technology

摘　　要：阐述在传统隔离开关合闸故障分析方法中,以单一的特征量对开关状态进行分析,导致对故障的监测结果存在一定的漏检和误检问题。为此,提出高压隔离开关合闸故障实时监测方法研究。利用开关的输出功率曲线,将开关的运行状态分为开关导电臂旋转阶段,触头触指接触阶段以及触头触指啮合阶段,并按照划分结果针对性地计算对应的特征量参数,通过匹配隔离开关实际功率曲线与特征量之间的关系,对各阶段故障状态进行判断。测试结果中,设计方法对不同类型隔离开关合闸故障的漏检次数和误检次数均明显低于对比方法,具有较高的可靠性。This paper expounds the traditional analysis method of isolating switch closing faults,which uses a single feature quantity to analyze the switch status,resulting in certain issues of missed and false detections in the monitoring results of faults.Therefore,a real-time monitoring method for the closing fault of high-voltage isolation switches is proposed.Using the output power curve of the switch,the operating state of the switch is divided into the rotating stage of the switch conductive arm,the contact finger contact stage,and the contact finger engagement stage.Based on the division results,corresponding characteristic parameter parameters are calculated accordingly.By matching the relationship between the actual power curve of the isolation switch and the characteristic quantity,the fault status of each stage is judged.In the test results,the design method has significantly lower missed and false detections for different types of isolation switch closing faults than the comparison method,indicating high reliability.

关 键 词：高压隔离开关 合闸故障 实时监测 输出功率曲线 阶段划分 特征量参数 

分 类 号：TM564.1[电气工程—电器]