统一电能质量调节器控制目标解耦的CCS-MPC直接控制策略研究  

Research on Direct Control Strategy of CCS-MPC With Decoupled Control Objectives for Unified Power Quality Conditioner

作　　者：张超[1] 王超[1] 祝文超 郑宏[1] ZHANG Chao;WANG Chao;ZHU Wenchao;ZHENG Hong(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)

机构地区：[1]江苏大学电气信息工程学院,江苏省镇江市212013

出　　处：《电网技术》2024年第12期5046-5055,I0053,I0052,共12页Power System Technology

摘　　要：针对控制目标耦合导致统一电能质量调节器电能质量补偿响应速度慢、精度差、鲁棒性差等问题,提出了一种控制目标解耦的连续集模型预测(continuous control set model predictive control,CCS-MPC)直接控制策略。该控制策略依据当前时刻被控目标电压、电流参数,构建目标唯一的预测控制模型,在简化控制器结构的同时实现串、并联侧电感电流和电容电压解耦控制,显著提高统一电能质量调节器动态性能。基于偏导数获取模型预测控制价值函数的最优解,实现参数变化、外部扰动工况下负载电压、电网电流高精度补偿。仿真验证了所提控制策略的有效性。To address the issues of slow response speed,poor accuracy,and weak robustness of the traditional unified power quality conditioner,this study proposes a continuous control set model predictive control(CCS-MPC)direct control strategy that decouples control targets.The proposed control strategy constructs a unique prediction control model based on the current parameters of the controlled target voltage and current,achieving the decoupling control of the inductance current and the capacitance-voltage on both the series and parallel sides and enhancing the dynamic performance of the UPQC while effectively simplifying the structure of the controller.By obtaining the optimal solution of the value function through partial derivatives,the proposed control strategy achieves high precision compensation for changes in parameters and external disturbances such as load voltage and grid current.The effectiveness of the proposed control strategy is verified by simulation.

关 键 词：统一电能质量调节器 电能质量 连续集模型预测控制 直接控制 控制目标解耦 

分 类 号：TM721[电气工程—电力系统及自动化]