Abstract
Recently, the neccessity of establishing the way to diagnose the deterioration of insulating materials and to predict the insulation breakdown becomes important.
In this paper, the insulating material with a small artificial void is used for experiments. The discharge pulses and the discharge luminescence measured simultaneously. The discharge luminescence is observed by a digital processing system. The discharge magnitude distribution was measured by a special internal discharge pulse measurement system which could analyze the discharge magnitude according to the phase angle domain of the applied AC 50Hz voltage. These measurements are carried out to correlate each other.
In results, the relation between discharge pulses and discharge luminescence is made clear. The pulse discharge magnitude near the positive peak of the applied voltage can be important factor on diagnosis of treeing deterioration.
