变电站内接地短路时分流系数的研究  

Study on the Shunted Coefficient during Grounding Faults in Substations

作　　者：申晓敏[1] 常晋兵 栗杰[3] 

机构地区：[1]山西电力职业技术学院,山西太原030021 [2]山西晋城供电分公司,山西晋城048000 [3]山西省电力公司超(特)高压分公司,山西太原030032

出　　处：《山西电力》2011年第6期25-27,共3页Shanxi Electric Power

摘　　要：对变电站内接地短路时的分流系数进行了研究,并推导出了工程适用的计算公式。与传统公式相比,考虑了变电站接地电阻和线路杆塔接地电阻的不同,同时考虑了不同电压等级下多回出线的情形,使计算结果更接近于实际。This paper studies the shunted coefficient during grounding faults occurring in substations,and deduces a new calculation formula.Compared with the traditional calculation formulas,the differences between substation grounding resistance and tower grounding resistance are taken into account,and multi-circuit transmission lines of different voltage rating are considered as well,so that the new formula would be more accurate and closer to the actual condition.

关 键 词：变电站 接地短路 分流系数 接地电阻 电阻分流 感应分流 

分 类 号：TM633.1[电气工程—电力系统及自动化]