摘要
模块化多电平换流器(MMC)在柔性直流输电领域具有广阔的发展前景,对模块化多电平换流器输电系统控制策略进行研究,提出了一种MMC-HVDC系统模型预测控制策略,为了实现柔性直流系统多个不同目标的有效控制,建立了相应的目标函数,并求其最优解,提出的控制策略控制效果很好,计算量小,并且不需要考虑权重因子的影响,控制系统结果较简单。在仿真平台上建立了双端柔直系统仿真模型,验证了提出的控制策略的优越性能。
Modular multilevel converter(MMC)has a broad development prospect in the field of flexible DC transmission.This paper studies the control strategy of the modular multilevel converter transmission system and proposes a predictive control strategy for the MMC HVDC system model.In order to achieve effective control of flexible and straight systems with multiple different objectives,the corresponding objective function is established and its optimal solution is obtained.The control effect of the proposed control strategy is very good,and the calculation amount is small,And the influence of weight factor need not be considered,and the control system results are simple.The simulation model of double ended flexible and straight system is established on the simulation platform,which verifies the superior performance of the proposed control strategy.
作者
刘远
何凯
罗磊
LIU Yuan;HE Kai;LUO Lei(State Grid Hunan Extra High Voltage Substation Company,Changsha 410000,China)
出处
《电气应用》
2023年第4期49-57,共9页
Electrotechnical Application
关键词
模块化多电平换流器
模型预测控制
子模块电容电压平衡
环流抑制
目标函数
modular multilevel converter
model predictive control
sub module capacitor voltage balance
circulating current suppression
objective function
