电力系统及其自动化学报2018，Vol.30Issue(1)：76-80,87,6.DOI:10.3969/j.issn.1003-8930.2018.01.012
基于瞬时对称分量变换的单相电压暂降检测
Detection of Single-phase Voltage Sag Based on Instantaneous Symmetrical Component Transform
摘要
Abstract
Voltage sag is one of the most serious power quality problems that affects the normal operation of industrial sensitive equipment and even leads to the interruption of continuous production process. Therefore,its detection is the key premise to guarantee the continuous normal industrial production. In this paper,voltage sag detection method is studied based on instantaneous symmetrical component(ISC)transform. First,a single-phase voltage is regarded as a three-phase asymmetrical voltage with two phase voltages being zero,and ISC method is used to extract the positive-se-quence component. Then,the voltage's amplitude and phase angle are calculated by abc/dq transform in complex do-main to realize the detection of voltage sag. Unlike other methods,the proposed method only uses d or q transform in complex domain by taking advantage of the phase angle information contained in the phase quantities,thus the computa-tion load and hardware requirements are reduced. Simulation results in Matlab validate the effectiveness of the proposed method.关键词
电压暂降/同步坐标变换/瞬时对称分量/复域/检测Key words
voltage sag/abc/dq transform/instantaneous symmetrical component(ISC)/complex domain/detection分类
信息技术与安全科学引用本文复制引用
李希年,庞清乐,孙静..基于瞬时对称分量变换的单相电压暂降检测[J].电力系统及其自动化学报,2018,30(1):76-80,87,6.基金项目
国家自然科学基金资助项目(61403236) （61403236）
山东省教育厅科技发展规划资助项目(J15LN10) （J15LN10）
烟台市科技计划资助项目(2014ZH079,2016ZH055) （2014ZH079,2016ZH055）
