基于MPC的构网型柔直受端换流站主动频率支撑研究

孙承章; 任永峰; 云平平; 米玥; 方琛智; 贺彬

doi:10.19912/j.0254-0096.tynxb.2024-0251

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (6) : 401-409. DOI: 10.19912/j.0254-0096.tynxb.2024-0251

基于MPC的构网型柔直受端换流站主动频率支撑研究

孙承章¹, 任永峰¹, 云平平², 米玥², 方琛智¹, 贺彬¹

作者信息 +

RESEARCH ON ACTIVE FREQUENCY SUPPORT FOR GRID-FORMING FLEXIBLE DIRECT RECEIVING END CONVERTER STATION BASED ON MODEL PREDICTIVE CONTROL

Sun Chengzhang¹, Ren Yongfeng¹, Yun Pingping², Mi Yue², Fang Chenzhi¹, He Bin¹

Author information +

文章历史 +

摘要

针对柔性直流输电系统受端换流站频率主动支撑和调节能力不足的问题,提出一种基于模型预测控制（MPC）的构网型模块化多电平换流器（MMC）控制策略。首先,介绍构网型MMC的频率支撑原理,分析构网型MMC的一次调频特性;其次,在传统下垂控制的基础上引入MPC算法,解决了传统下垂控制二次调频能力不足的问题,该控制方法可生成实时最优控制函数间接实现下垂系数的动态调整,使系统频率稳定追踪给定值起到二次调频的效果;最后,通过Matlab/Simulink软件平台进行时域仿真,验证了所提控制策略的可行性与有效性。

Abstract

This paper addresses the issue of insufficient active frequency support and regulation capabilities at the receiving converter stations of flexible direct current transmission systems. A control strategy based on model predictive control （MPC） for grid-forming modular multilevel converters （MMC） is proposed. Firstly, the paper introduces the principle of frequency support for grid-forming MMCs. Subsequently, the MPC algorithm is integrated into the traditional droop control to overcome the inherent limitations of secondary frequency regulation in conventional droop control. This control method generates real-time optimal control functions that indirectly enable the dynamic adjustment of the droop coefficient, thus allowing the system frequency to stably track the setpoint and achieve the effect of secondary frequency regulation. Finally, time-domain simulations conducted on the Matlab/Simulink software platform validate the feasibility and effectiveness of the proposed control strategy.

导出引用

孙承章, 任永峰, 云平平, 米玥, 方琛智, 贺彬. 基于MPC的构网型柔直受端换流站主动频率支撑研究[J]. 太阳能学报. 2025, 46(6): 401-409 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0251

Sun Chengzhang, Ren Yongfeng, Yun Pingping, Mi Yue, Fang Chenzhi, He Bin. RESEARCH ON ACTIVE FREQUENCY SUPPORT FOR GRID-FORMING FLEXIBLE DIRECT RECEIVING END CONVERTER STATION BASED ON MODEL PREDICTIVE CONTROL[J]. Acta Energiae Solaris Sinica. 2025, 46(6): 401-409 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0251

中图分类号： TM72

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