基于残差生成器的分散补偿控制策略  

Decentralized Compensation Control Strategy Based on Residual Generator

作　　者：周文 杨少波 ZHOU Wen;YANG Shaobo(The State Grid Hebei Electric Power Company Electric Power Research Institute,Shijiazhuang 050021,Hebei,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021

出　　处：《电气传动》2022年第24期24-29,共6页Electric Drive

基　　金：国家电网有限公司科学技术项目(kjcb-2020-36)。

摘　　要：在直流微电网中,母线电压稳定是维持系统正常运行的关键。负载投切和分布式微源功率波动都会对直流母线电压的稳定造成影响。针对上述问题提出一种基于残差生成器的分散补偿控制策略。首先,将Boost变换器模型进行线性化处理得到其状态空间方程。其次,设计直流I—V下垂控制以及电压偏差补偿控制。最后,针对电流扰动设计基于残差生成器的补偿控制结构,并通过模型匹配求解补偿控制器。通过仿真实验可知,该控制结构在不改变原系统控制结构的前提下,可以有效地解决直流母线电压波动问题,增强整个直流微电网系统的鲁棒性。In the DC microgrid,bus voltage stability is the key to maintain the normal operation of the system.Load switching and distributed micro-source power fluctuations will affect the stability of the DC bus voltage.To solve the above problem,a compensation control strategy based on the residual generator was proposed.Firstly,the state-space model of the Boost system was established.Then,the DC I—V droop control method and voltage deviation compensation control were designed.Finally,a compensation control structure based on the residual generator was designed for current disturbance,and the voltage dynamic compensation controller was obtained by the model matching principle.Simulation experiments show that the control strategy can effectively solve the DC bus voltage fluctuation problem,and enhance the robustness of the DC microgrid system.

关 键 词：直流微电网 电能质量 残差生成器 模型匹配 

分 类 号：TM46[电气工程—电器]