基于形态滤波器预滤波的电压扰动检测方法  

Voltage Disturbance Detection Method Based on Morphological Filter Pre-filtering

作　　者：牛胜锁[1] 程博 李金博 吕林飞 伏修来 NIU Shengsuo;CHENG Bo;LI Jinbo;Lü Linfei;FU Xiulai(School of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,Hebei,China;Ningbo Power Supply Company,State Grid Zhejiang Electric Power Company,Ningbo 315000,Zhejiang,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]国网浙江电力公司宁波供电公司,浙江宁波315000

出　　处：《电气传动》2022年第24期35-40,共6页Electric Drive

基　　金：国家重点研发计划项目(2017YFB0902901)。

摘　　要：提出一种基于数学形态学滤波和求导法dq变换的电压扰动检测方法。首先为了减小待检测信号中脉冲、谐波等多种噪声对检测结果的干扰,利用自适应理论构建一种复合形态滤波器对含噪待检测信号进行预处理,然后利用多重直线形态滤波器改进的求导法dq变换对预处理后电压信号进行电压扰动检测,以快速准确地检测出待测电压的幅值、相位。搭建仿真模型,分别对自适应复合形态滤波器滤波流程、自适应复合形态滤波器性能、多重直线形态滤波器改进的求导法dq变换电压扰动检测性能进行仿真分析。最后搭建电压扰动发生硬件平台,对所提方法在扰动情况下的电压检测能力进行验证。Avoltage disturbance detection method based on mathematical morphological filtering and derivation dq transformation was proposed.Firstly,in order to reduce the interference of pulses,harmonics and other noises in the signals to be detected,a composite morphological filter was constructed based on adaptive theory to preprocess the noisy signals to be detected.Then the voltage disturbance of the preprocessed voltage signal was detected by the improved derivation dq transformation of multiple linear morphological filter,so that the amplitude and phase of the voltage to be measured can be detected quickly and accurately.The simulation model was built,the filtering flow of adaptive composite morphological filter,the performance of adaptive composite morphological filter,and the voltage disturbance detection performance of derivation dq transformation method improved by multiple linear morphological filter were analyzed.Finally,a voltage disturbance generation hardware platform was built to verify the voltage detection capability of the proposed method in the case of disturbance.

关 键 词：求导法dq变换 自适应复合形态滤波器 电压扰动检测 幅值相位 

分 类 号：TM933[电气工程—电力电子与电力传动]