串联附加电感的电感测量方法

Inductance measuring using series additional inductance

介绍一种快速测量发电机、变压器等感性绕组电感的方法,即采用同一化方法并进行动态测量。在测量回路中串联一个附加电感,同时对被测电感和附加电感进行动态测量,然后将结果相除,使得无需求解电流导数值,消除了由于采用离散采样的数值微分法近似求解电流导数值带来的误差。经计算机仿真,证明了其准确性。

An approach to fast inductance measuring for generator and transformer is presented,in which the identification principle and dynamic measuring are adopted. A series additional in-ductance is introduced in the measurement circuit,which is dynamicly measured together with the transformer inductance. The ratio of two measurement results makes solution of current derivative value needless. Thus the error of current derivative value induced by numerical differentiation method with discrete sampling data is eliminated. The simulation on computer verifies its veracity.