Key Technologies and Development Modes of Flexible Interconnection of Low-voltage Distribution Station Area

被引：0
|
作者：
Xu Y. [1 ]
Liu H. [1 ]
Xiong X. [1 ]
Ji Y. [1 ]
Shao Y. [1 ]
Zhang H. [1 ]
Sun L. [1 ]
Wu M. [1 ]
机构：
[1] State Grid Shanghai Energy Interconnection Research Institute Co., Ltd., Pudong New District, Shanghai
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2022年 / 42卷 / 11期
关键词：
Development mode; Distribution station area; Flexible DC interconnection; Operation control; Structure topologies; Typical scenarios;
D O I：
10.13334/j.0258-8013.pcsee.210578
中图分类号：
学科分类号：
摘要：
Low-voltage distribution area interconnected by flexible DC technology is an effective means to realize dynamic capacity expansion and rapid transmission of power restoration, and improve the reliability of power supply and the ability to accept the distributed power. In long term, the flexible network of low-voltage hybrid AC and DC power system can be used to adapt to large-scale multi-mode sources and loads access, and achieve the goal of flexible and efficient interaction between the source network and the load storage. The paper proposed typical scenarios suitable for flexible interconnection of power distribution area, including large-scale distributed power access, terminal electrification rate increase, new infrastructure construction requirements and seasonal load fluctuations. The latest progress of key technologies were summarized from five aspects of planning and construction, interconnection topologies and grid structure design, key equipment, operation control and rapid relay protection. Combined with operation control, a primary construction plan and a secondary IoT architecture for the flexible interconnection system were proposed. On the basis, the advanced application and future development mode of the flexible interconnection system in the distribution station area were prospected. © 2022 Chin. Soc. for Elec. Eng.
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页码：3986 / 4000
页数：14
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