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电子学报  2014 

用于电流型电子式电压互感器的积分电路

, PP. 405-410

Keywords: 电子式电压互感器,积分电路,信号还原,温度补偿,暂态性能

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Abstract:

积分电路是电流型电子式电压互感器(EVT)中实现信号还原的关键环节,其性能直接影响互感器的稳态和暂态特性.提出了一种应用于电流型EVT的带隔直控制的积分电路,可以有效隔离输入信号中的直流成分,改善互感器的暂态性能;而且其带宽可满足40次以下谐波电压测量的要求.并提出利用热敏电阻对积分电路进行温度补偿的方法,提高了电流型EVT的工作稳定性.基于本文设计的积分电路研制了电流型EVT样机,并进行了试验.仿真和试验结果验证了该积分电路的实用性和有效性.

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