一种基于相关算法的电能质量信号定位方法

电能质量扰动是目前电能质量研究中的重要问题,快速、准确定位电力系统中暂态电能质量信号是实现电力补偿和电能质量分析的前提。相关算法是时域检测微弱信号中非常有效的算法,其原理简单、容易物理实现,且具有较强的滤波能力,因而具有广泛的用途。文章提出一种基于相关检测的电能质量信号定位方法,能有效定位电能质量信号发生的起止时间。通过比较几种不同的电能质量信号定位方法验证了本方法具有明显的优势。

A New Method to Locate Power Quality Disturbing Signals Based on correlation Algorithm

Power quality disturbing signals is an important issue in power quality research. To locate the power quality disturbing in power system rapidly and precisely becomes the precondition of analyzing and compensating. And correlation algorithm is effective in weak signal detecting. Its algorithm is simple and it can be made with no complicated components, especially for its capability in filtering noise, making it the most spreading useful tool in signal analyzing. This paper proposed a new method to locate power quality signals based on correlation algorithm. It can locate the starting and ending of power quality signals effectively. Through comparing several locating method, the effectiveness of the method can be proved.