基于原子分解的电压闪变检测  

Atomic decomposition based voltage flicker detection

作　　者：贾清泉[1] 王宁[1,2] 李林川[2] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛066004 [2]天津大学电力系统仿真控制教育部重点实验室,天津300072

出　　处：《电力科学与技术学报》2013年第2期16-21,27,共7页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(50877069)

摘　　要：根据信号原子分解的思想,针对电压闪变的特点构造电压闪变原子库。首先应用匹配追踪算法提取基波分量,然后对去除基波分量的残余信号提取电压闪变分量,并根据电压闪变分量参数检测电压闪变;对3种不同电压闪变的验证结果表明,该方法不仅能较精确地提取各电压闪变的参数,而且迭代次数少,计算量不大。该电压闪变参数为治理或抑制电压闪变提供了依据。A new detection method of voltage flicker was proposed in this paper. Voltage flicker dictionary was designed by analyzing voltage flicker characteristics based on the atomic decompo- sition. Firstly, the fundamental frequency component was extracted, then the Matching Pursuits （MP） algorithm was used to extract voltage flicker from the residual signals. In each iteration step, the voltage flicker parameters were obtained and used to distinguish whether the voltage flicker was correct or not. The iteration stopped until the extracted signal was a fake one. Three different voltage flickers were simulated. Simulation results showed that the voltage flicker pa- rameters are accuracy, and the method is with small computational complexity. The voltage flicker parameters supply a strong basis to regulate the voltage flicker.

关 键 词：电压闪变 原子分解 匹配追踪 电能质量 

分 类 号：TM866[电气工程—高电压与绝缘技术]