变压器铁芯状态综合在线监测方案的探讨  

Discussion on Comprehensive on-Iine Monitoring Scheme of TraNsformer Core State

作　　者：周正超 杨军伟 ZHOU Zhengchao;YANG Junwei

机构地区：[1]南京启智电气技术有限公司,江苏南京210000

出　　处：《电力系统装备》2023年第9期173-175,共3页Electric Power System Equipment

摘　　要：变压器是电力系统最重要的设备之一,是电网中能量转换和传输的核心。在变压器铁芯接地铜排处可以通过零磁通互感器和罗氏线圈对变压器铁芯接地电流和高频局放信号进行监测,对变压器的多点接地故障、局放故障能够进行有效识别,对变压器的谐波工况以及故障原因进行初步的分析,实现变压器多状态量的综合在线监测。Transformer is one of the most important equipment in power system and the core of energy conversion and transmission in power grid.At the grounding copper bar of transformer core,the grounding current of transformer core and high-frequency partial discharge signal can be monitored through zero flux transformer and Rogowski coil.It can effectively identify the multi-point grounding fault and partial discharge fault of the transformer,preliminarily analyze the harmonic working conditions and fault causes of the transformer,and realize the comprehensive on-line monitoring of multi state quantities of the transformer.

关 键 词：变压器 铁芯 接地电流 高频局放 零磁通互感器 

分 类 号：TM41[电气工程—电器]