• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Lightning Protection >Statistical lightning simulations for a HV “mixed” overhead-cable line: Preliminary studies
【24h】

Statistical lightning simulations for a HV “mixed” overhead-cable line: Preliminary studies

机译：用于HV“混合”高线缆线的统计闪电模拟：初步研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The paper addresses the statistical simulation of the backflashover performance of an Italian 150 kV-50 Hz mixed overhead-cable subtransmission line, focusing on direct lightning strokes to the overhead-cable transition tower. An ATP-EMTP-based Monte Carlo procedure, developed by the authors, has been applied to assess the backflashover rate (BFR) of the mixed line (ML). In addition, the procedure was applied to the statistical evaluation of some ML components' stresses, such as the energy duty of metal oxide surge arresters (MOSAs) installed at the transition tower, the energy duty of sheath voltage limiters (SVLs) connected to the cross-bonded cable sheaths and the cable sheath voltages near the cable entrance. The backflashover response of the overhead portion of the ML differs from an all-overhead line only at the transition tower, so that the overall performance practically coincides with that of an all-overhead line. A non-negligible probability of damage to SVLs installed at the first minor cross-bonding section is found, whereas a much lesser energy stress is associated to MOSAs. Lastly, maximum cable sheath over-voltages are always well below 50 kV.
机译：本文介绍了意大利150 kV-50Hz混合架空电缆分层线的反射性能的统计模拟，专注于直接电缆过渡塔的直接闪电冲程。由作者开发的基于ATP-EMTP的蒙特卡罗程序已经应用于评估混合线（ML）的反射率（BFR）。此外，将该程序应用于一些ML组分的应力的统计评估，例如安装在过渡塔的金属氧化物浪涌避雷器（MOSAS）的能量占空比，连接到的护套电压限制器（SVL）的能量占空比电缆入口附近交叉粘合的电缆护套和电缆鞘电压。 ML的顶部部分的反向射回响应仅在过渡塔的全架线线的不同之处，使得整体性能实际上与全架空线的线相一致。找到安装在第一小交叉键合部分的SVL损坏的不可忽略的概率，而能量应力更大的能量应力与MOSAS相关联。最后，最大电缆护套过电压始终远低于50 kV。

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