Simulation of apparent and true charges of partial discharges

Abstract

Here it is considered partial discharges in the bubbles inserted in the fluid volume in the case of electrode systems "plane-plane" and "point-plane". The calculated "true" and "apparent" charges show that the apparent charge is many times smaller than the true charge. Smaller bubble size leads to greater ratio of the true charge to the apparent charge. There are two cases when the values of these charges are close. First case: the size of the bubble is large enough, namely close to the value of the gap in the case of flat electrodes. Second case: the void is in contact with the electrode. The latter case is realized in the case of the electrode system "point-plane". The experimental and calculated data are compared for this case.