Flexible voltage arc extinction control method and system for multi-form single-phase fault

The invention discloses a flexible voltage arc extinction control method and system for a multi-form single-phase fault, and belongs to the technical field of power distribution network control, and the method comprises the steps: firstly collecting a bus zero-sequence voltage or a neutral point voltage, and carrying out the type recognition of a single-phase fault when the amplitude of the bus zero-sequence voltage or the neutral point voltage exceeds a starting criterion setting value; and determining a control strategy of the flexible voltage arc extinguishing device according to the obtained single-phase fault type identification result. According to the method, the single-phase fault form can be accurately identified, a correct flexible voltage arc-extinguishing device input strategy is given, and the problem of impact on the system caused by false input of the flexible voltage arc-extinguishing device under the single-phase broken line load side grounding fault is solved. 本发明公开了一种面向多形态单相故障的柔性电压消弧控制方法及系统