750kV主变中压侧套管CT电流异常分析  

Analysis on Abnormal CT Current of Bushing at the Medium-Voltage Side of 750kV Main Transformer

作　　者：祁宝才 QI Baocai(Maintenance Company of State Grid Qinghai Electric Power Co.,Ltd.,Xining 810007)

机构地区：[1]国网青海省电力公司检修公司,青海西宁810007

出　　处：《电力安全技术》2022年第2期24-27,共4页Electric Safety Technology

摘　　要：某750 kV主变投运后,接入其中压侧套管电流互感器电流回路的第一套稳控装置、测控装置及故障录波装置均出现电流异常现象。介绍了本次电流异常的原因分析及处理过程,并为避免出现类似问题提出了一些建议。Upon a 750 kV main transformer starts its initial operation, the first set of stability control device,measurement and control device and fault recording device connected to the current circuit of bushing current transformer at the medium-voltage side all involved in abnormal current. The cause and treatment process of this abnormal current is analyzed, and several suggestions are proposed to avoid similar problems.

关 键 词：电流互感器 CT断线 套管 接地 

分 类 号：TM452[电气工程—电器]