Model Predictive Control Strategy of Multi-Port Interline DC Power Flow Controller  

作　　者：He Wang Xiangsheng Xu Guanye Shen Bian Jing 

机构地区：[1]Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin,132012,China [2]Marketing Department,State Grid Jilin Electric Power Co.,Ltd.,Changchun,130061,China

出　　处：《Energy Engineering》2023年第10期2251-2272,共22页能源工程（英文）

基　　金：funded by National Natural Science Foundation of China (52177074).

摘　　要：There are issues with flexible DC transmission system such as a lack of control freedom over power flow.In order to tackle these issues,a DC power flow controller(DCPFC)is incorporated into a multi-terminal,flexible DC power grid.In recent years,a multi-port DC power flow controller based on a modular multi-level converter has become a focal point of research due to its simple structure and robust scalability.This work proposes a model predictive control(MPC)strategy for multi-port interline DC power flow controllers in order to improve their steady-state dynamic performance.Initially,the mathematical model of a multi-terminal DC power grid with a multi-port interline DC power flow controller is developed,and the relationship between each regulated variable and control variable is determined;The power flow controller is then discretized,and the cost function and weight factor are built with numerous control objectives.Sub module sorting method and nearest level approximation modulation regulate the power flow controller;Lastly,theMATLAB/Simulink simulation platformis used to verify the correctness of the establishedmathematicalmodel and the control performance of the suggestedMPC strategy.Finally,it is demonstrated that the control strategy possesses the benefits of robust dynamic performance,multiobjective control,and a simple structure.

关 键 词：DC power flow controller model predictive control modular multi-level converter control strategy dynamic performance 

分 类 号：TH137.52[机械工程—机械制造及自动化]