2MVA无串联变压器级联多电平动态电压调节器的设计与仿真  

System Design and Simulation of 2MVA Cascaded Multilevel Dynamic Voltage Restorer without Series-Transformer

作　　者：尹忠东[1] 周丽霞[1] 于坤山[2] 

机构地区：[1]电力系统保护与动态安全监控教育部重点实验室(华北电力大学),北京市昌平区102206 [2]中国电力科学研究院,北京市海淀区100085

出　　处：《电网技术》2006年第1期80-84,共5页Power System Technology

摘　　要：研究了基于级联多电平结构的无串联注入变压器的2MVA动态电压调节器(Dynamicvoltagerestorer,DVR)的系统设计方案,针对DVR的主电路拓扑、电压暂降检测算法、底层载波移相控制策略、储能计算、滤波器设计及逆变器部分的损耗进行了分析研究,并对某生产基地6kV系统的电压暂降问题完成了DVR装置主电路参数和控制电路的功能设计,采用仿真软件EMTDC/PSCAD进行了仿真研究,验证了文中所提设计方案的正确性及有效性。A novel systemic design scheme for dynamic voltage restorer （DVR） with capacity of 2MVA based on cascaded multi-level topology without series transformer is proposed, the analytical study on main circuit topology, the algorithm to detect voltage sag, carrier phase-shifting SPWM control strategy, energy storage calculation, falter design and power loss of inverter are carded out. To solve the voltage sag in 6kV power system of a certain enterprise, the parameter design of DVR＇s main circuit and functional design of its control circuit are completed. The simulation research for these designs are conducted by simulation software EMTDC/PSCAD, simulation results show that the proposed design scheme is correct and effective.

关 键 词：动态电压调节器 级联多电平逆变器 电压暂降 串联变压器 电能质量 电力系统 

分 类 号：TM714.2[电气工程—电力系统及自动化] TM502