Inductance measuring using series additional inductance
Shengsuo Niu · Dianli zidonghua shebei · 2005
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.