摘要
动态电压恢复器(DVR)是补偿电压暂降最经济、最有效的装置。研究DVR的检测算法是设计DVR最重要和最主要的任务之一。常见的检测算法有每相电压量导数算法、单相电压延迟60°构造三相电压dq变换法、求导数法构造三相虚拟电压的dq分解法和两点法。通过对各种检测算法的理论分析和在实际装置上的仿真波形研究,确定两点法具有原理明确、实现方法简单、计算误差小等优点,更适合作为工程用DVR装置的检测算法。
Because dynamic voltage restorer （DVR） is the most economical and efficient device for voltage sag compensation, study on DVR inspection algorithms is one of the most important tasks in DVR design. Common algorithms include derivation of voltage of each phase, DQ transformation method by delaying single phase voltage by 60~ to construct three-phase voltage, DQ decomposition method through derivation to construct three-phase virtual voltage, and two-point method. Through theoretical analysis of each algorithm and simulated waveform studies on actual devices, it is concluded that the two-point method has many advantages, such as clear in principle, simple to implement, and high accuracy, etc., so that it is more appropriate for engineering DVR device inspection.
出处
《电力建设》
2008年第9期80-83,共4页
Electric Power Construction
关键词
动态电压恢复器
电压暂降
检测算法
两点法
dynamic voltage restorer （DVR）
vohage sag
inpection algorithm
two-point method
