三相四线动态电压调节器的单周控制策略与仿真分析  

One-Cycle Control Strategy and Simulation of Dynamic Voltage Regulator for Three-Phase Four-Wire System

作　　者：李承[1] 邹云屏[1] 

机构地区：[1]华中科技大学电气与电子工程学院,湖北省武汉市430074

出　　处：《电网技术》2007年第2期52-56,共5页Power System Technology

摘　　要：提出了一种三相四线系统动态电压调节器(dynamic voltage regulator,DVR)的单周控制模型。在分析主电路的基础上推导出了DVR的单周控制模型。在电压骤降、骤升以及电源中含有谐波的情况下对新建立的模型进行了仿真研究。结果表明,单周控制用于三相四线DVR既具有较好的动态特性,又控制电路简单。在电压变化范围不大于30%时有较好的补偿效果,并对电源谐波有一定的抑制作用。A new one-cycle control scheme of dynamic voltage regulator （DVR） for three-phase four-wire system is proposed. On the basis of main circuit analysis, the one-cycle control model for DVR is deduced and simulated under voltage sag by 35% of rated voltage, voltage swell by 35% of rated voltage and the condition that there are harmonics in power source. Simulation results show that DVR with one-cycle control for three-phase four-wire system not only possesses better dynamic characteristics, but also its control circuit is simple. The DVR with one-cycle control can offer better compensation while the voltage variation extent is less than 30% and can restrain harmonics in power source as well.

关 键 词：动态电压调节器 单周控制策略 三相四线系统 控制建模 电能质量 

分 类 号：TM731[电气工程—电力系统及自动化] TP272[自动化与计算机技术—检测技术与自动化装置]