摘要
应用于电力系统的Rogowski线圈一般工作在微分状态,采用外积分电路后,可对暂态电流作出较好的反映,便于分析故障信息。比较了Rogowski线圈在有源和无源外积分电路条件下直流分量、周期分量的响应,以及综合分析其性能。并用Matlab软件仿真,分析和仿真结果表明,理论上有源外积分电路更适合对电力系统暂态电流的检测;而无源外积分电路的输出信号对输入信号的跟随性是有条件的(RC取值较大),且对电力系统暂态电流的检测误差比较大,无源外积分电路只适合对灵敏度要求不高的场合。
The Rogowski coil in power systems usually works with a necessary outer integral circuit in the differential status,which reflects the transient current for the failure information analysis. Responses of the direct current and the periodic current on the Rogowski coil with active and passive integral circuits are compared,and their performance is synthetically investigated. The simulation with Matlab shows that,the active integrator is better than the passive one in the power system transient current measurement in theory,and the latter may be applied to special occasions of low sensitivity for its conditional following characteristic on the RC value and larger error in the transient current measurement.
出处
《电力自动化设备》
EI
CSCD
北大核心
2006年第7期30-33,共4页
Electric Power Automation Equipment
基金
华北电力大学博士学位教师科研基金项目(20050608)~~
