摘要
在介绍电压暂降基本概念、原因及危害的基础上,详细分析了电压暂降的主要检测方法和特点,提出不同场合应选取不同方法。其中,基于无功功率理论的d q0变换方法在目前动态电压恢复器装置中比较常用;新的单相d-q坐标变换检测方法实时性不够好;改进的电压暂降检测方法在对暂降幅值和相位跳变进行检测时扰动很小,实时性高。最后提出采用DVR装置补偿。
This paper outlines the problems of voltage dip in power system, including the basic concept, producing, harmful effects, and the methods and characteristics of analysis detection. Various methods are used in different cases. The dq0 transformation method based on instantaneous reactive power theory has been widely used in DVR at present. A new way to detect the dq transformation of single-phase instantaneous voltage does not good enough in real-time applicability. The improved method to detect magnitude and phase-angle jump has less perturbance and better detection accuracy. Finally,the technical measure of DVR compensation device is suggested.
出处
《吉林电力》
2006年第6期10-12,14,共4页
Jilin Electric Power
关键词
电压暂降
电能质量
检测方法
动态电压恢复器
voltage dip
power quality
detection methods
dynamic voltage restorer （DVR）
