基于SLO实时分解的电力电容器局部放电信号检测方法研究  

Research on Partial Discharge Signal Detection Method of Power Capacitor Based on SLO Real-time Decomposition

作　　者：杨轶婷 YANG Yi-ting(Department of Electrical Engineering,Anhui Electrical Engineering Professional Technique College,Hefei 230000,Anhui Province)

机构地区：[1]安徽电气工程职业技术学院电力工程系,安徽合肥230000

出　　处：《沈阳工程学院学报（自然科学版）》2021年第1期36-41,共6页Journal of Shenyang Institute of Engineering:Natural Science

基　　金：2018年安徽省教育厅质量工程项目(2018ylzy116)。

摘　　要：针对传统电力电容器局部放电信号检测方法存在检测时间较长、检测准确率较低的问题,提出了基于SLO实时分解的电力电容器局部放电信号检测方法。引入电力电容器局部放电信号节点的可信度评价机制,对电力电容器局部放电信号节点的信息素进行更新,依据信息素全局更新结果;利用蚁群算法选择局部放电产生的电磁波信号的传播路径;在此基础上,对容器全局SLO进行实时分解,采用相关系数提取主要SLO实时分解的模态分量,根据提取结果完成电力电容器局部放电信号检测。实验结果表明,该方法能够准确地检测出电力电容器局部放电信号,且缩短了检测时间,提高了电力系统的安全性能。In order to solve the problems of long detection time and low detection accuracy in traditional PD signal detection methods of power capacitor,a real-time decomposition method based on SLO is proposed.In this paper,the credibility evaluation mechanism of PD signal node of power capacitor is introduced to update the pheromone of PD signal node of power capacitor.According to the global update result of pheromone,the propagation path of electromagnetic wave signal generated by PD is selected by ant colony algorithm.On this basis,the global SLO of container is decomposed in real time and the main SLO is extracted by correlation coefficient.The partial discharge signal of power capacitor can be detected according to the extracted results.The experimental results show that the proposed method can detect the PD signal of power capacitor accurately,shorten the detection time,and improve the safety performance of power system.

关 键 词：电力电容器 局部放电 信号检测 

分 类 号：TM407[电气工程—电器]