同杆并架双回输电线路感应电压的计算

Calculation of the induction voltage on double circuit transmission lines

分析了两回线路同杆并架时停运线路上感应电压产生的原因,并进行了仿真计算,分析了接地线位置和接地电阻大小,导线排列,运行线路载荷及投切操作,杆塔接地电阻等因素对感应电压的影响。得出了接地线位置和其电阻的大小是影响停电线路上感应电压大小的重要因素的结论。

This paper analyses the reason that induction voltage induces on the non-energized lines of 500 kV double circuit transmission lines and calculates the induction voltage by simulation. The effects of all factors such as the position of ground wire and the value of earth connection~ ground resistance, cross section of the lines, loads, lines throwing in and switching off on the energized lines, the tower ground resistance are analyzed. The conclusion is that the position of ground wire and the value of earth connection＇s ground resistance are two of the most important factors.