电力系统保护与控制2016，Vol.44Issue(10)：10-16,7.DOI:10.7667/PSPC151146
基于模型预测控制的 MMC-HVDC 系统控制策略研究
Study of control strategy for MMC-HVDC system based on model predictive control
摘要
Abstract
In order to improve the dynamic response speed of the inner loop of the HVDC transmission system based on modular multilevel converter (MMC-HVDC), a model predictive control method (MPC) for MMC-HVDC system is proposed. In this method, the optimal control voltage is obtained by predicting model, feedback correction and rolling optimization. MPC overcomes the problem of PI parameter tuning difficulties and slow dynamic response of traditional double closed loop control. In view of the outer loop PI controller parameters on the system sensitivity problem, the parameters of PI controller are adjusted adaptively. The robustness of the controller is improved by adjusting the PI parameters according to the input error and the output of the controller. In order to realize the voltage balance between sub module capacitor, the NLM voltage balance modulation algorithm based on the ranking method is adopted to realize the capacitor voltage balance between the sub modules. At last, the simulation model of 5 levels MMC-HVDC system is built on Matlab/Simulink platform. The simulation results show the effectiveness and feasibility of the proposed control strategy.关键词
模块化多电平变换器/MPC/准比例谐振/参数自适应/NLMKey words
MMC/MPC/quasi proportional resonance/parameter adaptive/NLM引用本文复制引用
代高富,符金伟,周胜,张冬凯..基于模型预测控制的 MMC-HVDC 系统控制策略研究[J].电力系统保护与控制,2016,44(10):10-16,7.基金项目
中央高校基本科研业务费专项资金资助(2682014 CX028)This work is supported by Fundamental Research Funds for the Central Universities (No.2682014CX028) （2682014 CX028）
