...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electric power systems research >The effect of wide band modeling of tower-footing grounding system on the lightning performance of transmission lines: A probabilistic evaluation
【24h】

The effect of wide band modeling of tower-footing grounding system on the lightning performance of transmission lines: A probabilistic evaluation

机译：塔式接地系统的宽带建模对输电线路雷电性能的影响：概率评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents a probabilistic evaluation, based on Monte-Carlo method, to estimate back flashover rate (BFR) and shielding failure flashover rate (SFFOR) of overhead transmission lines (TLs). In the proposed approach, as opposed to the conventional methods, a wide band model of the tower-footing grounding system is adopted assuming the soil electrical parameters to be either constant or frequency dependent. The statistical parameters affecting the TLs' outage rate are taken into account in the probabilistic studies. Simulations are done for a typical 400-kV transmission line which is modeled in EMTP.RV. From the simulation results, it is found that the BFR of transmission lines is markedly affected by the tower footing grounding system model. This effect is more pronounced when the soil electrical parameters are frequency dependent. It is also found that the SFFOR of the transmission lines is not significantly affected by The wide-band model of the tower-footing grounding system. (C) 2016 Elsevier B.V. All rights reserved.
机译：本文提出了一种基于蒙特卡洛方法的概率评估，以估计架空输电线路（TL）的反向闪络率（BFR）和屏蔽故障闪络率（SFFOR）。与传统方法相反，在建议的方法中，采用了塔底接地系统的宽带模型，并假定土壤电参数是恒定的或频率相关的。在概率研究中考虑了影响TL中断率的统计参数。对在EMTP.RV中建模的典型400 kV传输线进行了仿真。从仿真结果可以看出，输电线路的BFR明显受塔基础接地系统模型的影响。当土壤电参数与频率有关时，这种影响更为明显。还发现，输电线路的SFFOR不受塔底接地系统的宽带模型的影响。 （C）2016 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号