• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2013 IEEE International Conference on Applied Superconductivity and Electromagnetic Devices >Improvement on the corona model of ultra high voltage alternating current transmission lines
【24h】

Improvement on the corona model of ultra high voltage alternating current transmission lines

机译：超高压交流输电线路电晕模型的改进

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

In designing lightning insulation margin of substation equipment in China, the attenuation and distortion of intruding wave caused by corona in the transmission lines is neglected, thus making too strict insulation requirements on the electrical equipment, what's more, the impulse corona has a great impact on the shielding failure and lightning resisting level of ultra high voltage alternating current (UHV AC) transmission line, making it necessary to study the corona effect of UHV AC transmission lines. In this paper, a corona model is put forward in which the coupling among the wires and corona in the overhead ground wire are taken into consideration and the capacity changes of wire to ground is taken into consideration as well after conducting the parallel connection between corona capacity and air capacity in the ionization zone then carrying out the series connection with the air capacity in none-ionization zone so as to simulate the corona. Such model is more favorable to the actual conditions of corona discharging. The lightning shielding failure ATP-EMTP corona model in the UHV AC transmission line, to which the corona mentioned above, is added will be established. The results show that corona has the impact on the wave passing through the transmission line, causing the attenuation and distortion of amplitude and slope of lighting wave, thus improving the shielding failure and lightning resistance level of the transmission line.
机译：我国在设计变电站设备的雷电绝缘裕度时，忽略了输电线路中电晕所引起的侵入波的衰减和畸变，对电气设备的绝缘要求过于严格，此外，脉冲电晕对电气设备的冲击也很大。特高压交流输电线路的屏蔽失效和抗雷击水平，有必要研究特高压交流输电线路的电晕效应。本文提出了一种电晕模型，该模型考虑了导线与架空地线中电晕之间的耦合，并且在进行电晕容量之间的并联连接后还考虑了线对地的容量变化。然后将电离区中的空气容量与非电离区中的空气容量进行串联连接，以模拟电晕。这种模型更适合电晕放电的实际情况。将建立添加了上述电晕的特高压交流输电线路中的防雷击穿ATP-EMTP电晕模型。结果表明，电晕对穿过传输线的电波产生影响，引起光波振幅和斜率的衰减和畸变，从而改善了传输线的屏蔽失效和抗雷击水平。

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