摘要
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。
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 inductors.The permitted distance between two bus grounding devices in this substation is 172.33 m and two group of grounding switched are required for each grounding device.
出处
《吉林电力》
2010年第3期1-4,22,共5页
Jilin Electric Power
关键词
电磁感应电压
母线接地器
端部效应
electromagnetic induced voltage
bus grounding device
end effect
