DC-PD : A NEW JUDGMENT WAY OF HIGH VOLTAGE PULSE CAPACITORS INSULATION AGING

摘要

It is introduced that the DC-PD measurement of film-paper liquid capacitors is studied by using newly developed DC-PD analyzing system in general electromagnetic screen lab. The research test which include a new balance circuit prove that, the insulation property of the film-paper liquid capacitors is obviously depended on quantity of gas existing in the capacitors; and the DC-PD measurement is affected by the conditions of the environment especially. The insulation property of the film-paper liquid capacitors can be shown by the curve of discharge quantity-discharge time on the basis of a lot of DC-PD testing of film-paper liquid capacitors with the same type.