Analysis and Selection on Measuring Methods of Grounded Capacitive Current for Distribution Network
Duan Su-pin · 2015
The key point to determine safe operation of power grid for neutral points of distribution network with ground connection through arc suppression coil is whether the calculation of grounded capacitive current value is correct. In the paper,it is briefly introduced the measuring method of single- phase grounded capacitive current for distribution network of ground system for low current and compared it with engineering calculation method. As a result,the injection method with signals of pilot frequency is considered to be able to accurately measure grounded capacitive current.