基于顺序形态学-dq变换的动态电能质量扰动检测算法

Detection and analysis of transient power quality disturbance based on order morphology-dq transformation

介绍了基于形态学理论的顺序形态滤波原理,并结合改进的双dq变换提出了一种全新的动态电能质量扰动的检测方法。将顺序形态变换应用到一维电力信号处理中,选择合适的结构元素和百分位构造滤波器。电压信号分别进行正、负序的双dq变换和滤波处理后,可以准确地检测到动态电能质量扰动的各项特征值。仿真结果表明该方法具有良好的准确性和动态响应特性。

The paper proposes a new method to detect transient power quality disturbances based on order morphology and improved d-q transform. Using order morphological transformation in the process of disposing electric signal, an order morphological filter is formed, which selects appropriate structure element and percentile. Characteristics of transient power quality disturbances can be detected exactly when it passes through positive, negative d-q transformation and order morphological filter. Simulation results show that this method has favorable veracity and dynamic response characteristic.