特高压输电线路单相自动重合闸过电压的仿真研究

单相自动重合闸与系统过电压之间有着密切的关系。本文首先从理论上推导了在不投入并联电抗器的情况下，特高压线路的工频电压升高；随后用PSCAD仿真软件对单相自动重合闸过电压进行仿真，在双端电源与长线相连情况下，分析并联电抗器运行方式和安装避雷器对工频电压升高的抑制作用。从推导分析中得到了特高压线路的工频过电压特性，提出了避雷器的最佳安装位置及对过电压的影响。

Simulation study of single phase auto reclosing in ultra-high voltage power transmission line

Single phase auto reclosing has close relation with overvoltage of power system.At first,this paper studies that the over-voltage based power frequency is restraint by using the shunt reactors and arrester.Then the mechanism of over-voltage production is analyzed on the conditions of double sources connected with long line without shunt reactors.The distributing voltage along the line with reactor connection is analyzed at the meantime.This paper makes single phase auto reclosing's PSCAD simulation and intr...