| 采用线路型避雷器提高35 kV输电线路的耐雷水平 |
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| 引用本文： | 张要强,张帆. 采用线路型避雷器提高35 kV输电线路的耐雷水平[J]. 绝缘材料, 2008, 41(1): 33-36 |
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| 作者姓名： | 张要强 张帆 |
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| 作者单位： | 1. 河南省电力勘测设计院线路室,郑州,450007
2. 华北水利水电学院信息工程系,郑州,450011 |
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| 摘 要： | 研究了在35 kV输电线路雷电"易击段"绝缘子串上并接线路避雷器来提高线路耐雷水平的方法。建立了雷电波作用下35 kV输电线路电磁暂态仿真计算模型,借助电磁暂态软件(ATP_EMTP)仿真分析了线路避雷器对35 kV输电线路耐雷水平的影响。计算结果表明,在"易击段"架设线路避雷器后,可明显提高35 kV输电线路的耐雷水平,尤其雷直击导线时,线路避雷器的作用效果更加明显;雷击杆塔塔顶时,杆塔接地电阻是影响35 kV输电线路耐雷水平的重要因素。最后,仿真估算了不同避雷器架设方案下35 kV输电线路的耐雷水平。本研究对于平原地区35 kV输电线路的线路防雷具有重要意义。
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| 关 键 词： | 输电线路 杆塔接地电阻 线路型避雷器 耐雷水平 |
| 文章编号： | 1009-9239（2008）01-0033-04 |
| 收稿时间： | 2007-11-26 |
| 修稿时间： | 2007-11-26 |
Improvement of Lightning Withstand Level of 35 kV Transmission Lines by Using Line Arrester |
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| ZHANG Yao-qiang,ZHANG Fan. Improvement of Lightning Withstand Level of 35 kV Transmission Lines by Using Line Arrester[J]. Insulating Materials, 2008, 41(1): 33-36 |
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| Authors: | ZHANG Yao-qiang ZHANG Fan |
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| Abstract: | The joining of line arrester in insulator string in 35 kV transmission lines sections which are easily stroked by thunder was researched.The electromagnetic transient simulation calculation model of 35 kV transmission lines under the action of lightning wave was built.The influence of the line arrester on the lightning withstand level of 35 kV transmission lines was simulated and calculated by electromagnetic transient software ATP-EMTP.The results show that the joining of line arrester can obviously improve the lightning withstand level of 35 kV transmission lines,and is especially effective when the lightning directly strikes the conductor.When the lightning strikes the tower top,it is the tower grounding resistance that greatly affects the lightning withstand level.The lightning withstand level of 35 kV transmission lines under various joining plans of line arrester were simulated and calculated. |
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| Keywords: | transmission lines tower grounding resistance line arrester lightning withstand level |
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