赣南酸性红壤地区输电线路杆塔接地性能的分析  

Analysis of Grounding Performance of Transmission Tower in Gannan Acid Red Soil Area

作　　者：谢宇廷 王俊杰[1] 

机构地区：[1]国网江西省电力公司赣州供电分公司,江西赣州341000

出　　处：《电瓷避雷器》2016年第3期99-104,共6页Insulators and Surge Arresters

摘　　要：输电线路接地性能的分析需要对杆塔的接地情况进行模拟。江西赣南地区的酸性红壤土质具有其独特性,相关接地方面的缺陷也经常出现,但与之对应的解决措施仍存在一定的盲目性,有待进一步研究。应用数据拟合与电路综合相结合的方法,建立了一种雷电频率范围下的输电线路接地装置的场路耦合模型;并基于该模型对赣南地区某220k V杆塔的接地性能进行了研究,分别从酸性红壤条件下的土壤电阻率以及接地体铺设长度等方面对该线路的接地性能进行了分析,分析结论对提高同类线路的防雷性能具有参考价值。Analysis of the grounding performance of the transmission line needs to simulate the grounding condition of tower. Acidic soils in Gannan Jiangxi has its uniqueness, related defects of grounding aspects appear frequently, however, there is still blindness in the corresponding solutions,need further study. A field-circuit coupled model of transmission line grounding device under a lightning frequency range is established by using the method of data fitting and integrated circuits.Based on the model, the grounding performance of a 220 k V tower in Gannan area is studied. The grounding performance of this line is analyzed from the aspects of soil resistivity under acidic red soil condition and the grounding laying length, etc. The analysis results have reference value to improve lightning performance of similar lines.

关 键 词：输电线路 接地体建模 接地性能 土壤电阻率 反击跳闸率 

分 类 号：TM75[电气工程—电力系统及自动化]