摘要
对超高压输电线路单相接地故障切除后的潜供电流进行了分析,建立了带并联电抗器的超高压输电线路单相重合闸动作的基于MATLAB的仿真模型,提出了一种新的并联电抗器中性点电抗取值的计算方法以及潜供电流电弧模型.对750 kV输电网络单相接地故障和单相重合闸动作进行了实例仿真计算.仿真结果表明,并联电抗器中性点小电抗的取值是合适的.
This paper analyses potential current of extra-high voltage transmission line after a phase-toground fault is tripped. A simulating model based on MATLAB of single-phase reclosure for extra-high voltage transmission line with shunt reactors is established. A new calculating method about the neural inductance of shunt reactors and potential current arc model is proposed. A simulating and computational example about a phase-to-ground fault and single-phase reclosure of 750 kV transmission system is presented. The simulating result shows that the selection of neural inductance of shunt reactors is optimum.
出处
《湖南工程学院学报（自然科学版）》
2010年第2期1-4,共4页
Journal of Hunan Institute of Engineering(Natural Science Edition)
基金
湖南省自然科学基金资助项目(07JJ6079)
关键词
超高压输电线路
单相重合闸
潜供电流
仿真模型
extra-high voltage transmission line,single-phase reclosure
potential current
simulation model
