广东电力2017，Vol.30Issue(1)：89-92,4.DOI:10.3969/j.issn.1007-290X.2017.01.017
220kV变电站主变压器低压绕组熔断事故分析
Analysis on an Accident of Main Transformer Low Voltage Winding Fuse in 220 kV Substation
李其伟 1咸日常1
作者信息
- 1. 山东理工大学电气与电子工程学院,山东淄博255049
- 折叠
摘要
Abstract
Low voltage winding disconnection of the main transformer occurred in one 220 kV substation.In allusion to characteristics of field accident that heavy gas protection of the main transformer firstly acted and then light gas protection sent signal,gaseous phase chromatographic analysis experiment was conducted for the main transformer.Deduced from test on transformer three-side DC resistance,short-circuit impedance test before the fault and analysis on recorder wave form,the reason for disconnection fault was initially considered as sudden high energy arc discharge of U phase inside the transformer.Disassembly experiment on the transformer verified fault property and validity of diagnosis analysis on the fault position.Relevant improvement measures and suggestions were proposed.关键词
220 kV变电站/主变压器/低压绕组/断线故障/故障录波Key words
220 kV substation/main transformer/low voltage winding/disconnection fault/fault recording分类
能源科技引用本文复制引用
李其伟,咸日常..220kV变电站主变压器低压绕组熔断事故分析[J].广东电力,2017,30(1):89-92,4.
