Abstract
The problem that the hidden fault between turns of reactor can not be found in time is becoming more and more obvious. In order to find out the method capable of rapidly discovering the interturn short circuit fault, a dry-type air-core reactor turn fault model is set up in this paper. Based on the relationship between magnetic signal and electrical signal, the turn-to-turn short circuit fault of reactor is monitored and analyzed online. Firstly, the principle of turn-to-turn short circuit fault monitoring is introduced. Then, the voltage value obtained from the detection coil is compared with the threshold value, and the internal integrity of the reactor is determined according to the comparison result, so as to avoid misoperation of the protection device. The experimental data shows that the method in this paper is accurate and it has important value for solving the turn-to-turn short circuit warning problem of reactors.
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