基于αβ变换的单相电压暂降检测方法对比与仿真  

Comparison and simulation of single-phase voltage sag detection method based on αβ transformation

作　　者：李婧瑄 党幼云[1] 董潭 罗辉 张翠 Li Jingxuan;Dang Youyun;Dong Tan;Luo Hui;Zhang Cui(School of Electronics and Information,Xi＇an Polytechnic University,Xi＇an 710048, China)

机构地区：[1]西安工程大学电子信息学院

出　　处：《电子测量技术》2018年第4期131-134,共4页Electronic Measurement Technology

摘　　要：电压暂降已成为现代电力系统中不可避免的电能质量问题,给人们的生活带来日益严重的危害,所以受到越来越多的关注。针对此现象的发生,可以通过准确检测出电压暂降的主要特征量实现相应的实时补偿。研究了迄今为止提出的3种单相基于αβ变换检测法,其中包括传统αβ变换检测法、改进的延时小角度检测法以及一种无锁相环检测法。通过运用MATLAB/Simulink进行仿真,对比分析了这3种检测方法的可行性和合理性,并证明其有效性。Nowadays,the voltage sag has become an inevitable power quality issue in modern power systems.We have pay more and more attention to the voltage sag because of the increasing harm to people′s life.In response to this phenomenon,it is possible to accurately detect the main characteristic amount of the voltage sag to achieve the corresponding real-time compensation.In this paper,we studied the so far put forward three kinds of single phase alpha beta transformation method,including the traditional alpha beta transform detection method,the improvement of delay small angle detection method and a kind of no PLL（phase lock loop）detection method.Through the use of Matlab/Simulink simulation,compare the feasibility and rationality of these three methods,and prove its effectiveness.

关 键 词：电压暂降 检测 ΑΒ变换 暂降幅值 

分 类 号：TM711[电气工程—电力系统及自动化]