期刊文献+

一种新型混联模块化储能系统及其高效柔性电能路由策略 被引量:1

Modular Flexible Energy-Storage System Integrated with Distributed Generation and its Efficient Energy Routing Strategy
原文传递
导出
摘要 可再生能源的接入使配电网面临运行方式不够灵活、负载不均衡、合环操作扰动大、可再生能源消纳能力受限等诸多问题,现急需一种运行灵活可控,能够对可再生能源快速消纳的拓扑结构。提出一种新型模块化交直流混联储能系统,该系统兼具分布式与集中式的柔性功率端口,适用于新型电力系统配电网柔性互联应用。系统采用模块化设计,分布式发电单元、储能单元和关键负载等多类型终端连接到级联H桥单元中压直流链路;各模块通过高频磁隔离通道连接至负载母线,将发电、储能端口配置成完全分布式结构;各模块交流侧串联连接实现与三相中高压交流电网的功率交互,从而形成低压直流、中压直流、中压交流的混合型端口。另外为维持系统稳定运行,进一步实现涉及交流电网、分布式发电、储能和负载的完全自主能量路由,提出一种分段能量管理策略。最后通过软件仿真验证所提模块化交直流混联储能架构及其控制策略的可行性。 Access to renewable energy in distribution networks causes many problems such as inflexible operation modes,unbalanced loads,large disturbances in closed-loop operation,and limited capacity for renewable energy consumption.Currently,flexible and controllable topologies that can rapidly consume renewable energy are urgently required.This paper proposes a new modular AC/DC hybrid energy-storage system that has both distributed and centralized flexible power ports and is suitable for flexible interconnection applications in new power system distribution networks.The system adopts a modular design,with multiple types of terminals such as distributed power-generation units,energy-storage units,and critical loads connected to the medium-voltage DC link of the cascaded H-bridge unit.Each module is connected to the load bus through a high-frequency magnetic isolation channel,which configures the power generation and storage ports into a fully distributed structure.The AC side of each module is connected in series to achieve the power interaction with the three-phase medium-and high-voltage AC power grid,resulting in the formation of low-voltage DC,medium-voltage DC,medium-voltage DC,medium-voltage DC,and medium-voltage AC hybrid ports.In addition,a segmented energy management strategy is proposed to maintain stable system operation and achieve fully autonomous energy routing involving the AC grid,distributed generation,energy storage,and loads.The feasibility of the proposed modular AC-DC hybrid energy-storage architecture and its control strategy were verified using software simulation.
作者 代子阔 徐妍 张东升 何明 张海洋 张佳琪 汪诚 DAI Zikuo;XU Yan;ZHANG Dongsheng;HE Ming;ZHANG Haiyang;ZHANG Jiaqi;WANG Cheng(State Grid Liaoning Electric Power Co.,Ltd.,Shenyang 110801,China;State Grid Tieling Electric Power Co.,Ltd.,Tieling 112099,Liaoning Province,China;State Grid Anshan Electric Power Co.,Ltd.,Anshan 114003,Liaoning Province,China;State Grid Fushun Electric Power Co.,Ltd.,Fushun 113012,Liaoning Province,China;State Grid Shenyang Electric Power Co.,Ltd.,Shenyang 110003,China;School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China)
出处 《电力建设》 CSCD 北大核心 2024年第11期34-49,共16页 Electric Power Construction
基金 江苏省自然科学基金项目(BK20190461) 国网辽宁省电力有限公司科技项目(2021YF-63)。
关键词 能量管理 分级控制 混合功率模块 故障穿越 energy management hierarchical control hybrid power module fault toleration
  • 相关文献

参考文献22

二级参考文献333

共引文献624

同被引文献12

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部