Method for calibrating a Rogowski coil of fast time response.
A new method was designed for calibrating a Rogowski coil of fast time response. The method is based on the cable pulser method except that the voltage signal pick-off output was moved to a position with a distance l from the load. If 2l/v is longer than the time duration of the forward voltage pulse u(f)(t), the reflected voltage pulse u(r)(t) could be separated from u(f)(t) and directly measured. Using the formula i(t)=[u(f)(t)-u(r)(t)]/50 to calculate the primary current of the Rogowski coil, the coil could be more accurately calibrated.
Liu
Rui
R
Department of Electrical Engineering, Tsinghua University, Beijing, China.
Wang
Xinxin
X
Zou
Xiaobing
X
Yuan
Jianqiang
J
Zou
Naigong
N
He
Luya
L
D002138:Calibration; D002681:China; D017076:Computer-Aided Design; D055590:Electromagnetic Phenomena / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis / Q000379:methods* / Q000592:standards*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013997:Time Factors