电力变压器局部放电模式识别原理及建模  

Principle and Modeling of Transformer Partial Discharge Pattern Recognition

作　　者：李红珍 杜良俊[2] LI Hongzhen;DU Liangjun(Shanghai Hisun Technology Co.,Ltd.,Shanghai 200082,China;Hangzhou Qiantang Riever Electric Group Co.,Ltd.,Hangzhou 311200,China)

机构地区：[1]上海浩顺科技有限公司,上海200082 [2]杭州钱江电气集团股份有限公司,浙江杭州311200

出　　处：《仪表技术》2024年第1期70-73,共4页Instrumentation Technology

摘　　要：电力变压器为电网的重要设备,对其进行局部放电的健康状态检测有利于保障电力系统的安全与稳定。准确识别出不同局部放电模式,有利于电力工作人员更好地把握绝缘性能状态,更好地判断出变压器运行状况。提出了局部放电模式识别的总体思路和架构,对气隙放电、电晕放电、沿面放电等3种常见模型进行了理论分析与推导,得到3种局部放电模型的PRPD谱图的相位、放电量等参数,以期为局部放电模式识别提供理论依据。Power transformers are important equipment in the power grid,and detecting the health status of partial discharge is beneficial for ensuring the safety and stability of the power system.Accurate identification of the different partial discharge modes is beneficial for power workers to grasp the insulation performance status and judge the operation status of transformers better.The overall idea and architecture of partial discharge pattern recognition are proposed,and three common models,including air gap discharge,corona discharge,and surface discharge,are theoretically analyzed and derived.Three partial discharge models,i.e.,phase,discharge amount,and PRPD spectra are obtained,which can provide a theoretical basis for partial discharge pattern recognition.

关 键 词：电力变压器 局部放电 模式识别 

分 类 号：TM855[电气工程—高电压与绝缘技术] TP183[自动化与计算机技术—控制理论与控制工程]