Research on pulse oscillating circuit of turn-to-turn over-voltage test for reactors

In order to discuss the operational feasibility of the test, analyses and experiments on the pulse oscillating circuit are carried out in this paper. The studies indicate that, under the same voltage, as gap of controllable discharging is larger than that of natural discharging, the trigger can be used to control the working state of the sphere gap, in repeatedly discharge condition and stable pulse oscillating voltage would be acquired. Research results show that the controllable spark-discharge technique is necessary and feasible to ensure the implementation of the turn-to-turn over-voltage test on dry-type air-core reactors.