基于内模和滑模控制的链式STATCOM控制策略研究  

Research on Integrated Control Strategy of Chain STATCOM Based on Internal Model Decoupling and Sliding Mode Control

作　　者：刘嘉博 刘桂英[1] LIU Jia-bo;LIU Gui-ying(School of Electrical&Information Engineering,Changsha University of Science&Technology,Changsha 410114,China;Qinglong County Power Supply Branch of State Grid Jibei Electric Power Company Limited,Qinhuangdao 066500,China)

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410114 [2]国网冀北电力公司青龙县供电分公司,河北秦皇岛066500

出　　处：《电工电气》2022年第5期19-24,共6页Electrotechnics Electric

摘　　要：推导了链式静止同步无功补偿器(STATCOM)的数学模型,并在此基础上提出了一种新的控制策略。针对链式STATCOM非线性、强耦合的特点,提出基于内模原理的解耦控制策略,并进一步引入滑模控制增强系统的鲁棒性。设计了基于PR控制的直流电容电压控制器,以抑制直流电容电压在启动过程中的超调和提高动态调节速度。通过MATLAB/Simulink仿真分析,验证了所提控制策略的有效性和优越性。This paper derived the mathematical model of chained STATCOM and proposed a new control strategy.It provided a decoupling control strategy based on the internal model principle in terms of the non-linear and strong coupling characteristics of chain STATCOM.Moreover,it introduced sliding mode control to enhance robustness.It designed a DC capacitor voltage controller based on PR control to suppress the overshoot of the DC capacitor voltage during the starting process and improve the dynamic adjustment speed.It verifies the effectiveness and superiority of the control strategy through MATLAB/Simulink simulation analysis.

关 键 词：链式STATCOM 内模解耦 滑模控制 电容电压平衡控制 

分 类 号：TM714.3[电气工程—电力系统及自动化]