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In distribution networks, safety and stability are of utmost importance. When a ground fault occurs, accurately determining the fault phase and avoiding misoperation of switches in other phases become crucial. This paper proposes a method using a magnetic sensor to measure the third phase current, which is then applied to ground fault line selection in distribution networks. The research aims to find solutions to eliminate interfering magnetic fields in complex electromagnetic environments, conduct studies on current measurement technologies using various mathematical models based on magnetic sensors, and develop low-cost, easy-to-install key technologies for achieving ground fault line selection in complex electromagnetic environments of distribution networks.
Meng et al. (Thu,) studied this question.