摘要
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.
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.
出处
《电力系统自动化》
EI
CSCD
北大核心
2013年第10期86-91,共6页
Automation of Electric Power Systems
基金
supported by National Natural Science Foundation ofChina(No.50477037,No.50607014)
关键词
自适应重合闸
点电压
故障相
技术
计算
单极
永久性故障
传输线方程
adaptive single-pole autoreclosure
fault location
permanent fault
transient fault
fault point voltage
