• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of electrical power and energy systems >Techniques for the diagnosis of oscillatory transients resulting from capacitor bank switching in medium voltage distribution systems
【24h】

Techniques for the diagnosis of oscillatory transients resulting from capacitor bank switching in medium voltage distribution systems

机译：由电容器组在中压配电系统中切换导致的振荡瞬态诊断技术

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

The oscillatory transient has well-dened characteristics such as short duration, considerable variations in the voltage's amplitude, and frequency, which can be manifested in any part of an Electric Power System and mainly caused by the capacitor bank switching. Knowing the effects caused, for possible mitigation of these, it is initially necessary to recognize their origin, since, for example, the possible disturbance recorders installed or other measuring equipment available on medium voltage systems do not point out the causes. The methodology presented in this research comprehends a complete study since the detection of an oscillatory transient until the extraction of the main characteristics of the signal in analysis, resulting from the capacitor bank switching. Initially, a comparative analysis of the processing time and the mean error in the detection was carried out by using Notch Filter, Wavelet Transform, and Mathematical Morphology techniques to identify the beginning of oscillatory transients in synthetic signals, with and without the presence of noise. The results obtained pointed out that the Mathematical Morphology identified with greater speed and less computational effort the presence of an oscillatory transient in comparison to the others. Later, applying the Matching Pursuit Algorithm with a structured data dictionary, it was possible to estimate the frequency (f), damping (d), and phase angle (a) parameters characteristic of the analyzed oscillatory transients.
机译：振荡瞬态具有良好的诸如短持续时间的良好的特性，电压幅度的相当多样化，并且可以在电力系统的任何部分中表现出并且主要由电容器组切换引起的。了解造成的效果，为了实现这些效果，最初需要识别它们的起源，因为例如，在中压系统上安装的可能的干扰记录器或其他测量设备不指出原因。本研究中呈现的方法理解完整的研究，因为检测振荡瞬态，直到提取信号在分析中的信号的主要特征，由电容器组切换产生。最初，通过使用陷波滤波器，小波变换和数学形态学技术来执行对检测中的处理时间和平均误差的比较分析，以识别合成信号中的振荡瞬变的开头，随着噪音的存在。获得的结果指出，以更大的速度和更少的计算努力确定的数学形态与其他相比之下的振荡瞬态的存在。稍后，使用结构化数据字典应用匹配追踪算法，可以估计分析的振荡瞬变的频率（F），阻尼（D）和相角（A）参数（A）参数。

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