摘要
针对电能路由器交流侧模块化变流器的协同控制,以及孤岛运行模式下提高系统频率稳定性的需求,提出基于虚拟同步机算法的电能路由器交流侧变流器本地控制策略,以及基于一致性算法的变流器分布式二次控制策略,实现了系统频率与电压的二次控制以及有功、无功功率按比例分配控制。所提分布式一致性协同控制策略结合了多智能体理论,只需建立稀疏通信网络完成相邻分布式发电单元的信息交互,系统灵活性高、冗余性好,可做到变流器模块即插即用,不受线路阻抗因素干扰,改进变流器的功率分配精度。最后,结合半实物实时仿真机和DSP控制板搭建了三电平变流器的半实物实验平台,实验结果验证了所提控制策略的有效性。
In order to realize the cooperative control of the modular converters on the AC side of the power router and to improve the frequency stability of the system in the island operation mode,a local control strategy for the converters on the AC side of the power router based on the virtual synchronous machine algorithm is proposed,and a consensus-based distributed secondary-control strategy of the converter based on the algorithm realizes the secondary control of the system frequency and voltage and the proportional distribution control of active and reactive power.The proposed distributed consensus-based cooperative control strategy combined with the multi-agent theory only needs to establish a sparse communication network to complete the information interaction between adjacent distributed power generation units.The system has high flexibility and good redundancy,and the converter module can support plug and play.It is not disturbed by line impedance factors and improves the power distribution accuracy of the converter.Finally,a hardware-in-the-loop experimental platform of the three-level converter was built by combining the hardware-in-the-loop real-time simulator and the DSP control board.The experimental results verify the effectiveness of the proposed control strategy.
作者
施永
张立博
解宝
苏建徽
SHI Yong;ZHANG Libo;XIE Bao;SU Jianhui(Engineering Research Center of Ministry of Education of Photovoltaic System,Hefei University of Technology,Hefei 230009,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2023年第4期43-54,共12页
Electric Machines and Control
基金
中央高校基本科研业务费专项资金(PA2022GDGP0032)
国家自然科学基金(51907045)。
关键词
电能路由器
虚拟同步机
模块化接口
分布式二次控制
多智能体理论
功率均分
electric power router
virtual synchronous machine
modular interface
distributed secondary control
multi-agent theory
power sharing
