基于改进遗传算法的变压器铁芯接地故障检测方法  

Transformer Core Grounding Fault Detection Method Based on Improved Genetic Algorithm

作　　者：王金凤 张伟 WANG Jinfeng;ZHANG Wei(Shandong Wuzhou Electric Co.,Ltd.,Zhucheng Kexin Branch,Weifang 262218,China;Weifang Guangming Electric Power Service Co.,Ltd.,Zhucheng Branch,Weifang 262218,China)

机构地区：[1]山东五洲电气有限公司诸城科信分公司,山东潍坊262218 [2]潍坊光明电力服务有限公司诸城分公司,山东潍坊262218

出　　处：《通信电源技术》2023年第24期229-231,共3页Telecom Power Technology

摘　　要：变压器铁芯接地故障识别存在接地电流检测误差高的问题。因此,以某变压器为例,设计了一种基于改进遗传算法的变压器铁芯接地故障检测方法。将变压器铁芯区段作为编码对象,设计基于改进遗传算法的铁芯区段运行状态编码;计算铁芯线圈静电感应电压,并采用暂态行波信号方式诊断铁芯接地故障。实验结果表明,所提方法的应用效果良好,能够准确感知接地故障瞬间铁芯的故障电流值。There is a problem of high detection error of grounding current in transformer core grounding fault identification.Therefore,taking a transformer as an example,this paper designs a transformer core grounding fault detection method based on improved genetic algorithm.Taking the core section of transformer as the coding object,the running state coding of core section based on improved genetic algorithm is designed.The static induction voltage of iron core coil is calculated,and the transient traveling wave signal is used to diagnose the iron core grounding fault.The experimental results show that the method proposed in this paper has good application effect and can accurately sense the fault current value of iron core at the moment of grounding fault.

关 键 词：改进遗传算法 感应电压 接地故障 铁芯 变压器 

分 类 号：TM407[电气工程—电器]