电测与仪表2012，Vol.49Issue(10)：9-13,5.
基于改进的卡尔曼滤波电压骤降检测方法
Method of Voltage Sag Detection Based on Improved Kaman Filter
摘要
Abstract
In order to detect the voltage sag accurately, this paper proposes a new method based on improved Kalman filter. When the frequency fluctuation is large enough to influence the detection of voltage characteristics, this method gets the frequency correction by calculating the slope of phase curve of state variables, then corrects the state transition matrix to get accurate tracking results. Experimental platform is MATLAB7.6, and the simulation results show that even in the case of frequency offset, harmonics and noise. This method can also exactly detect the voltage sag characteristics (sag amplitude, starting and ending time and angle jump), has strong robustness.关键词
电压骤降/频率校正/Kalman滤波/相位跳变Key words
voltage sag/ frequency correction/ Kalman filtering/ phase jump分类
信息技术与安全科学引用本文复制引用
王海元,李开成,李燕平,何顺帆,李辰,张晓康..基于改进的卡尔曼滤波电压骤降检测方法[J].电测与仪表,2012,49(10):9-13,5.基金项目
国家自然科学基金资助项目(5107708) （5107708）
国家支撑计划资助项目(2008BAC36B02) （2008BAC36B02）
