基于PSCAD/EMTDC的P类电流互感器暂态饱和特性分析  

Analysis of transient saturation characteristics of P type current transformer based on PSCAD/EMTDC

作　　者：白加林[1] 王宇恩[1] 赵武智[1] 胡越冬 

机构地区：[1]贵州电网公司电力调度控制中心,贵州贵阳550002 [2]贵州粤黔电力有限责任公司,贵州六盘水553000

出　　处：《贵州电力技术》2015年第11期1-5,40,共6页Guizhou Electric Power Technology

摘　　要：针对现场运行中发生的110 k V母线保护区外故障动作的行为分析,通过PSCAD/EMTDC仿真再现了故障。仿真结果表明事故是由于故障电流中的直流分量造成电流互感器饱和所致。经仿真分析,通过增大电流互感器变比、绕组匝数、铁芯截面积,减小二次回路阻抗、铁芯剩磁等措施可以有效提高电流互感器的抗饱和能力。The behavior of the 110 kV busbar protection external fault operation in an accident was analyzed in this paper, and the accident was reproduction through PSCAD/EMTDC. The simulation results showed that the current transformer saturation caused by the DC component of the fault current. The analysis results showed that increasing the current transformer ratio, winding turns, core cross- sectional area, reducing the secondary circuit impedance, core remanenee, could effectively improved the ability of anti-saturation of current transformer.

关 键 词：电流互感器 直流分量 暂态仿真 PSCAD/EMTDC 

分 类 号：TM452[电气工程—电器]