基于数学形态学和瞬时无功功率分解的电能质量扰动参数估计

Electric Energy Quality Disturbance Parameter Estimation Based on Mathemational Morphology and Instantaneous Reactive Power Decomposition

电能质量扰动参数是定义和分类电能质量扰动,评估电能质量水平的重要依据。提出了一种基于数学形态学和瞬时无功功率分解的电能质量扰动参数估计方法,该方法将电能质量扰动分为不同的类型,通过dq变换,广义形态滤波和高帽变换结合的方法对基波幅值变化类扰动进行分析,对分析结果进行参量计算用以估计电能质量扰动参数。仿真结果验证该方法是行之有效的。

Power quality disturbance parameters are important basis for delimiting or classifying power quality disturbances and assessing the level of power quality. The paper puts forward a power quality disturbances parameters estimationmethod based on mathematical morphology and instantaneous reactive power theory, the method classifies power quality disturbances to different types, extracts information through dq decomposition, generalized morphological filter and Top -hat transform, then gets the disturbance parameters by calculating. Simulation results verify that the method is effective.