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A wide frequency circuit model for convert transformer based on passivity modification
Author(s): 
Pages: 15-17,52
Year: Issue:  19
Journal: POWER SYSTEM PROTECTION AND CONTROL

Keyword:  互感器宽频建模无源修正电路综合;
Abstract: 首先采用一台HP4395A型网络矢量分析仪对电压互感器进行了S参数的测量,计算了互感器的Y参数.通过矢量匹配拟合得到互感器Y参数的频域有理函数表达式,为了保证所建模型的无源性,对拟合参数进行了无源修正,并通过网络综合建立了互感器稳定的丌型等效电路.最后采用Matlab/Simulink软件进行了仿真,仿真结果表明采用无源修正技术可以保证互感器宽频等效模型的稳定性和精确性.
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