交流变电站500kV母线接地器的配置

针对现有常规母线接地器配置计算方法,介绍了根据母线电磁感应电压分布情况对母线接地器距离进行计算的方法。以长春某500 kV变电站为例,对可能存在的电磁感应电压,端部效应和平行导线互感影响等因素,用2种电流分布曲线分别计算接地器距母线端部及接地器之间的距离,经计算,该变电站2组母线接地器间的允许距离为172.33 m,各需2组接地开关即可。

Configuration of 500 kV AC Transformer Substation Bus Grounding Device

Calculation method of bus grounding distance according to the distribution of bus electromagnetic induced voltage is proposed in this paper based on the regular bus ground configuration of bus grounding device.For an example of certain 500 kV substation in Changchun,two current distribution curve are used for calculating the distance of grounding device to bus end and between grounding devices with the consideration of the potential electromagnetic induced voltage,end effect and induction between parallel i...