| 同塔多回线路防雷计算中的杆塔模型 |
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| 引用本文： | 梁义明,葛栋. 同塔多回线路防雷计算中的杆塔模型[J]. 高电压技术, 2006, 32(1): 76-77,87 |
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| 作者姓名： | 梁义明 葛栋 |
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| 作者单位： | 1. 吉林省电力科学研究院,长春,130021
2. 中国电力科学研究院,北京,100085 |
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| 摘 要： | 为准确评价同塔多回线路高度较高杆塔的雷电性能以计算各横担上的电位,给出了同塔多回线路杆塔分段传输线模型,杆塔不同部位用不同波阻抗和不同视在波速模拟。EMTP实例仿真结果表明雷击杆塔后各横担上电位差值小于系统电压峰值,系统电压的相角将会决定闪络的相别,较精确地反映了同塔多回线路杆塔中雷电波传播的暂态过程。这是集中电感或单一波阻抗模型无法模拟的。
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| 关 键 词： | 杆塔模型 同塔多回 防雷 |
| 文章编号： | 1003-6520（2006）01-0076-02 |
| 收稿时间： | 2005-02-15 |
| 修稿时间： | 2005-02-15 |
Tower Model in Calculation of Lightning Protection on Multi-circuit Transmission Line with Same Tower |
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| LIANG Yiming,GE Dong. Tower Model in Calculation of Lightning Protection on Multi-circuit Transmission Line with Same Tower[J]. High Voltage Engineering, 2006, 32(1): 76-77,87 |
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| Authors: | LIANG Yiming GE Dong |
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| Affiliation: | 1. Jilin Electric Power Research Institute, Changchun 130021, China; 2. China Electric Power Research Institute, Beijing 100085, China |
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| Abstract: | A distributed line tower model of multi-circuit transmission line is constructed;different part of towers are modeled by different surge impedance and different wave velocity.EMTP simulation results by the distributed line tower model show that the voltage between adjacent cross arms is lower than the peak value of system voltage,and the phase angle of system voltage can determine the phase of flashover,which can not be simulated by the lumped inductance model or single surge impedance model.The distributed line tower model is precisely applied to the multi-circuit transmission line tower. |
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| Keywords: | tower model multi-circuit transmission line on same tower lightning protection |
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