摘要
文中提出了一种基于线圈电流信号及动态时间规整(dynamic time warping,DTW)的高压断路器状态评估方法。首先对高压断路器合闸过程中采集的控制线圈电流信号进行平滑处理;然后以正常工况电流信号作为DTW基准向量,以未知工况的电流信号作为测试向量输入DTW,得到两个向量的最优匹配路径;最后根据匹配路径的变化曲线判断高压断路器的工作状态。在35 kV高压断路器上的实验结果表明,所提方法可快速、准确、直观地对高压断路器的运行状态进行评估,并可应用到高压断路器的在线监测中。
A kind of condition assessment method for high voltage circuit breaker based on coil current signal and dy⁃namic time warping(DTW)algorithm is proposed in this paper.Firstly,the current signal of the control coil collect⁃ed during the process of closing operation of high voltage circuit breaker is smoothed.Then the current signal of the normal condition is taken as the DTW reference vector,and the current signal of the unknown condition is taken as the test vector and input into the DTW.Afterwards,the optimal matching path of the two vectors is obtained.Final⁃ly,the operation condition of the circuit breaker is judged in accordance with the variation curve of the matching path.The experimental results of 35 kV circuit breaker show that the proposed method can quickly,accurately and intuitively assess the operation condition of circuit breaker,and can be applied to the on⁃line monitoring of high volt⁃age circuit breaker.
作者
钟声
李晓洋
梁胜乐
李伟
林男
陈益冲
卢家祥
王德高
李少鹏
ZHONG Sheng;LI Xiaoyang;LIANG Shengle;LI Wei;LIN Nan;CHEN Yichong;LU Jiaxiang;WANG Degao;LI Shaopeng(Transmission and Transformation Maintenance Branch of Hainan Power Grid Co.,Ltd.,Haikou 570000,China;Hebei Key Laboratory of Electric Machinery Health Maintenance&Failure Prevention,North China Electric Power University,Hebei Baoding 071003,China)
出处
《高压电器》
CAS
CSCD
北大核心
2023年第4期24-31,共8页
High Voltage Apparatus
基金
海南电网有限责任公司科技项目[075000KK52200001(HNKJXM20200030)]。
关键词
高压断路器
电流信号
动态时间规整
状态评估
high voltage circuit breaker
current signal
dynamic time warping
condition assessment
作者简介
钟声(1972-),男,本科,高级工程师,主要研究方向为输变电设备状态检修与故障诊断;通信作者:李少鹏(1995-),男,硕士研究生,主要研究方向为输变电设备状态监测与故障诊断(E⁃mail:lsplzh955@163.com)。
