• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electric Power Components and Systems >Voltage-Sag Magnitude and Phase Jump due to Short Circuits in Distribution Systems with Variable Fault Resistance
【24h】

Voltage-Sag Magnitude and Phase Jump due to Short Circuits in Distribution Systems with Variable Fault Resistance

机译：可变故障电阻的配电系统中的短路引起的电压暂降幅度和相跳

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

Voltage sags mainly caused by line faults in transmission and distribution systems have become one of the most important power quality problems facing industrial and commercial customers, as well as utilities. Voltage sags are normally described by characteristics of both magnitude and duration. Phase-angle changes that greatly affect several electronic equipment should be taken into account in identifying and characterizing the sag phenomenon. In this article, voltage sags due to line faults, such as three phase-to-ground, single line-to-ground, and line-to-line faults, for fault impedance (resistance) variation are firstly characterized by using symmetrical component analysis. Different line fault types, fault resistance magnitudes, and their effect on voltage sag magnitude variations together with phase-angle jumps are examined. In order to verify the analyzed results, simulations based on power circuit models are presented. The described methodology is useful in short-circuit studies by giving a quick qualitative assessment of the voltage sag magnitude and phase jump when fault resistance is changed between its extreme values.
机译：主要由输配电系统线路故障引起的电压骤降已成为工业，商业客户以及公用事业面临的最重要的电能质量问题之一。电压骤降​​通常由幅度和持续时间的特征来描述。在识别和表征下垂现象时，应考虑到对几个电子设备有很大影响的相角变化。在本文中，首先通过对称分量分析来表征由于线路故障（例如三相对地，单线对地和线对线故障）引起的电压突降，以降低故障阻抗（电阻）的变化。研究了不同的线路故障类型，故障电阻幅度及其对电压骤降幅度变化以及相角跳变的影响。为了验证分析结果，提出了基于功率电路模型的仿真。当故障电阻在其极值之间变化时，通过快速定性评估电压骤降幅度和相位跳变，所描述的方法可用于短路研究。

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