Controllable arc-extinguishing reactor with high speed response
2001
A novel autoregulated arc-extinguishing reactor with extremely short response time is presented. It consists of a high leakage transformer and controllable bipolar thyristors attached at the low voltage side winding of the transformer. Filter circuits are designed to suppress high harmonic currents and are connected to the third winding of the transformer. Methods are proposed to reduce iron loss and partial heat resulting from leakage flux. A technique is developed to measure the capacitive current of power distribution lines and put forward the mode of autoregulation for distinguishing between the permanent grounding fault and the series resonance occurring while the fault disappears. Experimental tests show excellent performance of the development equipment.
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