UPFC串联换流器交叉耦合控制系统设计  

Design of Cross-coupling Control System for UPFC Series Converter

作　　者：李杰[1] 周志成[1] 刘黎明[2] 邹旭东[2] 谢天喜[1] 

机构地区：[1]江苏省电力公司电力科学研究院,江苏南京211103 [2]华中科技大学,湖北武汉430074

出　　处：《江苏电机工程》2015年第6期14-17,共4页Jiangsu Electrical Engineering

摘　　要：串联换流器是统一潮流控制器(UPFC)中的关键设备,其控制系统的性能直接关系到UPFC的调节能力。文中提出了一种UPFC串联换流器交叉耦合控制的方法,设计了相应的控制系统,采用频率特性法绘制了系统的Bode图,并由此确定PI调节器参数,利用MATLAB仿真软件建立UPFC系统仿真模型,计算线路有功传输功率指令发生阶跃变化时,UPFC系统经串联部分注入电网的功率、直流母线电压以及系统发送端电压的相角等的变化情况,结果表明本文设计的交叉耦合控制系统可以迅速独立地控制有功功率的调节,而对无功功率影响很小,验证了控制系统的有效性。The series converter is the key equipment of the unified power flow controller（UPFC）. The performance of its control system is directly related to the regulating ability of UPFC. This paper presents a crossing-coupled method and a system to control the series converter of UPFC. The Bode diagram of the control system is drawn to determine the PI controller parameters. A 380 V UPFC system simulation model is established in MATLAB to calculate the power injected to the line by the series part, the voltage of the DC bus and the changes of the voltage phase angle of the sending terminal. The results showed that the cross-coupling control system has a small interaction when the power flow is changed by UPFC, which verifies the effectiveness of this control system. This paper provides a reference for the future designs and applications of UPFC.

关 键 词：UPFC 串联换流器 交叉耦合控制 有功功率 

分 类 号：TM76[电气工程—电力系统及自动化]