基于形态加权动态时间规整的断路器故障辨识方法  

Fault Identification Method for Circuit Breakers Based on Shape-based Weighted Dynamic Time Warping

作　　者：夏杰 孙希盈 房林杰 孙晓伟 田野 王璟 XIA Jie;SUN Xiying;FANG Linjie;SUN Xiaowei;TIAN Yie;WANG Jing(State Grid Weifang Power Supply Company,Weifang 261000,China)

机构地区：[1]国网山东省电力公司潍坊供电公司,山东潍坊261000

出　　处：《电工技术》2025年第5期21-24,共4页Electric Engineering

摘　　要：变电站高压断路器通常用于切断故障电流,以保证电网的安全运行,因此对断路器工况进行掌握至关重要。为此,提出了一种基于形态加权动态时间规整(SWDTW)的断路器故障辨识方法。首先分析了不同工况下断路器动作时线圈电流的波形特征;然后采用基于形态特征的加权动态时间规整方法(SWDTW)对线圈电流波形数据进行相似性分析,从而实现断路器诊断;最后通过仿真证明所述方法能有效实现断路器故障类型辨识,为断路器问题的合理处理提供有力支撑。The high-voltage circuit breakers in substations are used to cut off fault currents and ensure the safe operation of the power grid,so it is crucial to understand the working conditions of the circuit breakers.This article proposes a circuit breaker fault identification method based on shape-based weighted dynamic time warping(SWDTW).Firstly,the waveform characteristics of coil current during circuit breaker operation under different operating conditions were analyzed.Then,SWDTW is used to perform similarity analysis on the coil current waveform data,in order to achieve circuit breaker diagnosis.Finally,simulation has shown that the proposed method can effectively identify the fault type of circuit breakers,providing strong support for the reasonable handling of circuit breaker problems.

关 键 词：断路器 加权动态时间规整 故障辨识 相似性分析 

分 类 号：TM712[电气工程—电力系统及自动化]