• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Manufacturing Science and Technology >Traveling Wave Current Polarity Comparison Protection Using Wavelet Modulus Maxima for HVDC Transmission Lines
【24h】

Traveling Wave Current Polarity Comparison Protection Using Wavelet Modulus Maxima for HVDC Transmission Lines

机译：使用小波模量最大值的HVDC传输线路的行波电流极性比较保护

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

摘要

ABB and SIEMENS schemes based on the voltage change rate are the existing main protection for HVDC transmission lines. But the analysis and simulation tests show that these protection schemes may be unreliable as high impedance faults or as disturbances of above 2% noisy. The paper presents a new protection scheme of traveling wave current polarity comparison for a bipolar HVDC transmission line. The traveling wave current polarity is represented by the wavelet modulus maxima (WMM) of the fault current traveling wave. The traveling wave current polarity comparison protection scheme is evaluated by PSCAD. The extensive simulation studies show that the proposed scheme is reliable to distinguish internal faults from external faults of HVDC transmission lines. And the protection scheme is immune to high impedance faults and able to accurately detect the fault line under the electromagnetic coupling circumstance.
机译：基于电压变化率的ABB和SIEMENS方案是HVDC传输线的现有主保护。 但分析和仿真试验表明，这些保护方案可能与高阻抗故障不可靠或高于2％噪声的干扰。 本文介绍了双极HVDC传输线的行波电流极性比较的新保护方案。 行驶波电流极性由故障电流行驶波的小波模数最大值（WMM）表示。 PSCAD评估行波电流极性比较保护方案。 广泛的仿真研究表明，该方案可靠地区分内部故障从HVDC传输线的外部断层。 保护方案免受高阻抗断层的免疫力，能够在电磁耦合环境下精确地检测故障线。

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