Wang Xingguo

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Because of the requirements of the accessing distribution generation and the high quality power supply to the protection of smart distribution, firstly, the drawbacks are analyzed to the existing stepped protection of distribution network; secondly, a new protection with multiple types of data based on the serial communication is proposed. The proposed(More)
A phase selection method for zero sequence current differential protection was proposed in this paper. In the first, electrical quantities characteristics of different ground faults were analyzed. Then zero sequence differential current was used as reference value and sizes of sequence differential currents and zero sequence differential current were(More)
The traditional fault phase selectors which have excellent performance for single-circuit transmission line may mis-operation for some cross country faults in parallel lines on the same tower. Based on the analysis of faults in parallel lines, a novel combined phase selector based on the one-end sampling data of a single line is proposed. Assume that(More)
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