Evaluation of Rogowski coil sensor performance using EMTP-ATP software

Abstract

Detection and measurement of partial discharge (PD) are important to monitor the insulation life in high voltage (HV) power equipment. This paper presents an electrical detection method which is Rogowski coil (RC) has been chosen as a measuring sensor to detect and measure the PD signal. Series of investigations on sensitivity and bandwidth for four types of RC using electromagnetic transient program-alternative transient program (EMTP-ATP) software was demonstrated. A single-end measuring method is used to locate the PD signal on three-phase MV underground cross-link polyethylene (XLPE) cable with 240 mm2 nominal area of copper conductor cable. An experiment was conducted in order to verify the simulation results. The precise selection of RC sensor based on the simulation and experimental results was compared with the previous design of researchers in term of sensitivity and bandwidth. In this case, result indicated that the new design of RC sensor performed better plays a vital role in detecting PD signal.