电能质量检测智能电子设备中的数据处理  

Data Processing of the Power Quality Monitoring Ingtelligent Electronic Device

作　　者：王英[1] 王军[1] 母秀清[1] 

机构地区：[1]西华大学电气信息学院,四川成都610039

出　　处：《自动化仪表》2010年第11期11-14,共4页Process Automation Instrumentation

基　　金：四川省重点学科基金资助项目(编号:SZD0503-09-0);四川省教育厅重点基金资助项目(编号:07ZA108)

摘　　要：为了确保电力系统的安全运行和电能质量的准确分析,构建了一种基于IEC 61850的电能质量监测智能电子设备框架,并提出一种基于FFT和小波变换相结合的数字信号处理方法。仿真结果证明,该方法不仅能够识别和检测扰动信号的起止时刻,也能够实时分析各次谐波的幅值和相位;在畸变和扰动的情况下,采用该改进算法具有很好的实用性和灵活性。In order to ensure the safety operation of power system and precise analysis for energy quality,the energy quality monitoring IED frame based on IEC 61850 is constructed,and the data processing method based on the combination of FFT and wavelet transform is proposed.The result of simulation proves that this method can be used for recognizing and detecting the start and stop time of disturbance signals,and analyzing various harmonics amplitude and phase in real time.The improved algorithm features excellent practicability and flexibility under conditions of distortion and perturbation.

关 键 词：电能质量 IEC 61850 智能电子设备 逻辑节点 快速傅里叶变换 小波变换 

分 类 号：TM712[电气工程—电力系统及自动化]