Voltage-type Arc Suppression Method of Single-phase-to-ground Faults in Distribution Network Considering Line Impedance

Conventional active arc suppression methods ignore the influence of line impedance and load current, which have limited arc suppression performance especially when the single-line-to-ground (SLG) fault is close to the end of the feeder line. In this paper, complex distribution network system considering line impedance is built, and an active arc suppression algorithm with full-current compensation is proposed to solve the problem, which adapts to the variation of system parameters, such as fault location, line impedance, grounding resistance and load. Comparative study of the proposed references and the conventional ones is presented. It shows that when the fault location is close to the end of the feeder line and the load power is large, the proposed method presents better arc suppression performance than the conventional one. The correctness of the proposed method is validated by simulation results in the MATLAB/Simulink environment.