基于改进的STUKF电压暂降检测方法  

A method of voltage sag detection based on improved STUKF

作　　者：程志友[1] 杨韬 袁昊辰 

机构地区：[1]安徽大学电子信息工程学院,教育部电能质量工程研究中心,安徽合肥230039

出　　处：《安徽大学学报（自然科学版）》2016年第4期50-57,共8页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61172127);高等学校博士学科点专项科研基金资助项目(20113401110006)

摘　　要：为了准确检测电压暂降,提出一种基于改进的强跟踪无迹卡尔曼滤波(STUKF)的电压暂降检测方法.该方法在建立的电压信号状态模型基础上,利用改进的STUKF对发生暂降的电压信号状态进行跟踪,从而实时提取出电压的幅值和相位信息.仿真结果和实际数据检测表明,所提方法能够有效地检测电压暂降的幅值、持续时间和相位跳变.与传统的STUKF相比,改进的STUKF跟踪精度更高、鲁棒性更强.A method of voltage sag detection based on improved strong tracking unscented Kalman filter （STUKF） was proposed to detect voltage sag accurately. Based on the established state model of the voltage signal, the method used improved STUKF to track the state of the voltage signal, thus the real-time magnitude and phase information of the voltage could be traced out. The simulation results and actual detected data demonstrated that the proposed method could detect the magnitude, phase and duration of the voltage sag effectively. The improved method had higher tracking accuracy and stronger robustness compared with the traditional STUKF.

关 键 词：强跟踪 无迹卡尔曼滤波 电压暂降检测 

分 类 号：TM711[电气工程—电力系统及自动化]