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电压互感器的高频无源电路模型

更新时间:2020-06-15 08:59:50 大小:349K 上传用户:songhuahua查看TA发布的资源 标签:电压互感器 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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提出了一种获得微观无源的PT高频模型方法,该方法首先利用矢量拟合获得Foster形式的网络函数稳定的表达式,然后利用起作用集方法求解带约束条件的二次规划获得满足无源的Foster形式的网络函数,最后综合获得微观无源的电路模型。根据无源修正前后网络函数的对比验证了本文所提方法的有效性。

Very fast transient overvoltage generated in gas insulated substation(GIS) will introduce into secondary by potential transformer(PT),and which will affect secondary equipment,so it must be analyzed.PT circuit model according to measured frequency domain network function could be implanted into EMTP or PSPICE,but if the model has active element,then the simulation maybe unsteady.For solving the problem,a method to obtain PT high frequency microscopic passivity circuit model is proposed.First,the method uses vector fitting to obtain steady Foster formula,and then active set method is used to solve quadratic programming with constraint to obtain passive Foster formula.At last,a circuit synthesis method for rational functions is applied to build microscopic passive circuit model.The effectiveness of...

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电压互感器的高频无源电路模型.pdf 349K

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