动态电压恢复器直流储能单元的数字电压控制  

Digital Voltage Control for DC Energy Storage Unit of Dynamic Voltage Restorer

作　　者：王长柱[1] 李鹏[1] 白茜[1] 

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),河北省保定市071003

出　　处：《电网技术》2007年第6期84-87,92,共5页Power System Technology

基　　金：华北电力大学重大预研基金项目(200613003)的资助

摘　　要：阐述了有源功率因数校正(active power factor correction,APFC)技术的工作原理,为消除动态电压恢复器(dynamic voltage restorer,DVR)直流储能单元充电过程中的谐波和无功电流,将APFC技术引入到DVR直流储能单元的电压控制中,提出了DVR直流储能单元的数字电压控制技术和电压、电流控制器的设计方法。仿真结果表明采用APFC技术能够主动消除DVR充电电流中的谐波和无功电流,提高储能单元的电压稳定性和动态响应性能。The working principle of active power factor correction （APFC） technology is expounded. To eliminate harmonics and reactive current during the charging process of DC energy storage unit of the dynamic voltage restorer （DVR）, leading APFC technology into the voltage control of DC energy storage unit of dynamic voltage restorer, the digital voltage control algorithm for DC energy storage unit of DVR is proposed and the design approach for voltage controller and current controller is given. Simulation results show that by use of APFC technology the harmonics and reactive current in charging current of DVR can be actively eliminated and both voltage stability and dynanlic response of DC energy storage unit can be improved.

关 键 词：电能质量 动态电压恢复器(DVR) 有源功率因数校正(APFC)直流储能单元 数字控制 

分 类 号：TM715[电气工程—电力系统及自动化]