| 引用本文: | 杨 鑫,李卫国,李景禄.变电站内短路时架空地线分流系数的计算方法[J].电力自动化设备,2012,32(11): |
| YANG Xin,LI Weiguo,LI Jinglu.Calculation of overhead ground line shunt coefficient for substation grounding fault[J].Electric Power Automation Equipment,2012,32(11): |
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| 摘要: |
| 变电站内短路时架空地线分流系数是确定变电站接地电阻目标值的基础数据。通过分析变电站内短路时架空地线分流的电路模型，提出一种利用回路电流法计算单条线路的架空地线分流系数的方法，并将其推广到所有线路分流系数的计算。与现场实测数据的对比结果证明了所提方法的准确性。 |
| 关键词: 架空地线 短路电流 分流系数 回路电流法 变电站 接地 |
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| Calculation of overhead ground line shunt coefficient for substation grounding fault |
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YANG Xin1, LI Weiguo1, LI Jinglu2
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1.School of Electrical and Electronic Engineering，North China Electric Power University，
Beijing 102206，China;2.Department of Electrical and Information Engineering，Changsha University of Science and Technology，Changsha 410076，China
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| Abstract: |
| The shunt coefficient of overhead ground line is the basic data for defining the target value of substation grounding resistance for substation inside short circuit fault. The circuit model of overhead ground line shunting for substation inside short circuit fault is analyzed and a method of shunt coefficient calculation based on the loop current method is proposed for single overhead grounding line. It is extended to the shunt coefficient calculation for all overhead lines. Its correctness is verified by the comparison with the measured site data. |
| Key words: overhead ground line short circuit currents shunt coefficient loop current method electric substations electric grounding |
