基于故障点电压的单相自适应重合闸判据

A new adaptive single-pole autoreclosure technique based on the magnitude of fault point voltage is presented.After fault phase tripping，the fault point voltage of transient faults is essentially different from that of permanent faults，so the magnitude of fault point voltage is used to distinguish fault nature.Fault point voltage can be calculated through uniform transmission line equation.Considering that fault point voltage changes with fault location and transition resistance，a concept of real-time action voltage setting is put forward.The technique solves the problem that criterions based on terminal voltage could be easily affected by inductive coupling voltage and transition resistance.Simulation results show that the method is reliable