...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of power & energy systems >FAULT LOCATION APPROACH FOR EHV OVERHEAD LINE COMBINED WITH UNDERGROUND POWER CABLE
【24h】

FAULT LOCATION APPROACH FOR EHV OVERHEAD LINE COMBINED WITH UNDERGROUND POWER CABLE

机译：超高压架空线与地下电缆组合的故障定位方法

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

A new accurate fault location technique for an underground power cable combined with an extra high voltage (EHV) transmission line is described in this paper. The analysis shows that the negative sequence voltages at the fault point and at the junction have different characteristics when the fault occurs in the overhead line or in the power cable, which can be used to discriminate the faulted section. In the selected section, the developed method, based on distributed parameters, could ensure high location precision. The new technique is suitable for both cable-overhead line (CO) and overhead-cable-overhead (OCO) transmission system. Considering the influence of the shunt capacitance and the distributed parameter, the method can obtain high accuracy. At the same time, the precision will not be affected by the fault resistance and unsynchronized data, thus, it also has a high reliability. The new fault location system is developed and the practical implementation is also demonstrated. Test results based on simulation and field data show its high precision under different conditions.
机译：本文介绍了一种结合超高压（EHV）传输线的地下电力电缆的精确故障定位新技术。分析表明，当架空线或电力电缆中发生故障时，故障点和结点处的负序电压具有不同的特性，可用于区分故障区域。在选定的部分中，基于分布式参数开发的方法可以确保较高的定位精度。这项新技术适用于架空电缆（CO）和架空电缆架空（OCO）传输系统。考虑到并联电容和分布参数的影响，该方法可以获得较高的精度。同时，精度不受故障电阻和数据不同步的影响，因此具有很高的可靠性。开发了新的故障定位系统，并演示了其实际实现。基于仿真和现场数据的测试结果表明其在不同条件下的高精度。

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