电气技术2024，Vol.25Issue(2)：74-78,5.
顺北油田二区变电站35kV电压互感器烧毁故障分析
Analysis on the burning fault of 35kV voltage transformer in the second district of Shunbei oilfield
魏斌 1蒲军1
作者信息
- 1. 中石化西北油田分公司,新疆 巴音郭楞蒙古自治州 841600
- 折叠
摘要
Abstract
During the operation of power grid in the oilfield,the 35kV and 10kV systems are neutral grounded or ungrounded systems through arc suppression coils.During the development period of the power grid,the system parameters may be in the resonance zone,and electromagnetic voltage transformers are prone to ferromagnetic resonance,generating overvoltage or overcurrent.In severe cases,the voltage transformers may be burned out.In this paper,three voltage transformer burn-out faults occurred in Shunbei No.2 substation are studied.The conclusion is drawn that the power system is in the resonant region,and the ferromagnetic resonance of voltage transformer is the cause of voltage transformer burn-out.By adopting measures such as investing arc suppression coils,applying voltage transformers with good saturation characteristics,and renovating 4PT,ferromagnetic resonance is effectively controlled.关键词
铁磁谐振/消弧线圈/励磁特性Key words
ferromagnetic resonance/arc suppression coil/excitation characteristic引用本文复制引用
魏斌,蒲军..顺北油田二区变电站35kV电压互感器烧毁故障分析[J].电气技术,2024,25(2):74-78,5.
