| 引用本文: | 马文忠,邰宇阳,王玉生,等.面向新能源接入的电能路由器模式切换协调控制策略[J].电力系统保护与控制,2023,51(18):52-61.[点击复制] |
| MA Wenzhong,TAI Yuyang,WANG Yusheng,et al.Mode switching coordination control strategy of an electrical energy router for new energy access[J].Power System Protection and Control,2023,51(18):52-61[点击复制] |
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| 摘要: |
| 电能路由器(electrical energy router, EER)可实现新能源、储能及多种电能负载的灵活接入，协调控制和运行模式切换是其运行控制的重点。为实现EER运行模式的平稳过渡，降低EER运行模式切换时母线稳压单元控制模式改变导致的切换冲击，首先分析并网和孤岛两种运行模式切换时的电压扰动机理，研究系统内功率突变以及母线稳压单元控制器的调节过程对系统的影响。然后设计EER模式切换时序，提出一种基于移相比保持器、电流保持器的控制器输出量提前补偿的模式切换协调控制策略，能够实现端口功率的实时平衡，降低模式切换暂态过程中的电压扰动，提升系统的暂态稳定性。最后，通过Matlab/Simulink仿真软件搭建EER仿真模型，验证了所提控制策略的有效性。 |
| 关键词: 电能路由器 模块化多电平换流器 功率平衡 模式切换 协调控制 |
| DOI：10.19783/j.cnki.pspc.230256 |
| 投稿时间：2023-03-15修订日期：2023-08-08 |
| 基金项目:国家自然科学基金项目资助(52277208) |
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| Mode switching coordination control strategy of an electrical energy router for new energy access |
| MA Wenzhong1,TAI Yuyang1,WANG Yusheng2,JIAO Lixin1,JIN Qiongting1,ZHANG Jingshun1 |
| (1. Institute of New Energy, China University of Petroleum (East China), Qingdao 266580, China;
2. PetroChina Planning & Engineering Institute, Beijing 100083, China) |
| Abstract: |
| An electrical energy router (EER) can realize the flexible access of new energy, energy storage and a variety of electrical loads. Coordinated control and operational mode switching are the focus of its operation control. To achieve a smooth transition of the EER operating mode and reduce the switching impact caused by the change of control mode of the bus regulator during that mode switching, the voltage disturbance mechanism during grid-connected and isolated operating mode switching is first analyzed. The influence of power abrupt change in the system and the regulation process of the bus regulator controller on the system is studied. Then, the EER mode switching sequence is designed, and a coordinated mode switching control strategy based on the advance compensation of the controller output of the shift ratio holder and the current holder is proposed. This can achieve real-time port power balance, reduce voltage disturbance in the mode switching transient process, and improve the transient stability of the system. Finally, an EER simulation model is established in Matlab/Simulink simulation software to verify the effectiveness of the proposed control strategy. |
| Key words: electrical energy router modular multi-level converter power balance mode switching coordinated control |
