关于同杆双回线检修回路中接地开关开断工况的研究

STUDY ON MAKING AND BREAKING BEHAVIOR OF THE EARTHING SWITCHES ON THE COMMON-TOWER DOUELE-CIRCUIT LINES

本文推导了同杆双回线路当一回线停电检修时，在检修线上产生的感应电压和电流的计算公式，并以此编制程序，计算了西南地区宝珠寺——龙王双回线路中检修线上电压和电流的数值，提出了国内各电压等级同杆双回线路感应电压和电流的参考数据，从而为制订国内接地开关开断感应电流的标准提供了依据。文中还推导了接地开关开合感应电流的等价试验回路。

The formulas are presented in this paperfor calculating the induced voltage and current in anearthed circuit line which is one of a common-towerdouble-circuit lines. According to the formulas,acomputer program was produced,and the induced val-ues in the Baozhushi-Longwang double-circuit lines inthe southwest area of China are calculated Inducedvalues in different voltage levels are put forwadtoprovide the basis for standardizing the rated values ofthe induced current and interruption of earthingswitches in China. The circuits for testing switchesare also discussed.