Discussion on Selection of Equalizing Capacitance for 500 kV Metal Oxide Arrester
Yuan Qing · Electrical Equipment · 2005
The equalizing capacitance for 500 kV metal oxide arrester (MOA) can reduce its non - uniform coefficient of voltage distribution, but it is with other unsafe factors, such as big diameter of external bushing, axle asymmetrical electric field, hard to inspect the performances and drop - down of operation reliability, which is not worthwhile to use it. Other equalizing measures were also introduced. The suggestion about solving the problem of non - uniform of voltage distribution is presented, which is to cancel porcelain equalizing capacitance, and through reasonably design to use equalizing ring, and to raise the electric - charge ratio of metal oxide resistance.