叶 影,徐冰雁,刘忠平,程启明,汤 波.基于新型电力系统不平衡电网下MMC-UPFC 的Lyapunov 控制策略研究[J].电测与仪表,2026,63(3):158-167. YE Ying,XU Bingyan,LIU Zhongping,CHENG Qiming,TANG Bo.Research on Lyapunov control strategy of MMC-UPFC based on unbalanced grid in novel power system[J].Electrical Measurement & Instrumentation,2026,63(3):158-167.
基于新型电力系统不平衡电网下MMC-UPFC 的Lyapunov 控制策略研究
Research on Lyapunov control strategy of MMC-UPFC based on unbalanced grid in novel power system
Aiming at the power flow tracking performance optimization problem of modular multilevel converter (MMC)-unified power flow converter (UPFC) in novel power system, a Lyapunov nonlinear control strategy of MMC-UPFC under unbalanced grid is proposed in this paper. Firstly, according to the MMC-UPFC topology, the MMC-UPFC mathematical model is established and its internal characteristics are analyzed. Secondly, the positive and negative sequence Lyapunov controllers of MMC-UPFC under unbalanced conditions are designed and the stability is proved. Then, the signal is transmitted to the MMC by the carrier phase shift modulation after the sub-module voltage equalization control. Finally, the MMC-UPFC simulation system is built for simulation verification, the effects of Lyapunov control and PI control are compared to verify the correctness and effectiveness of the proposed Lyapunov control under two different operating conditions.
