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电力大数据:2019,22(9):-
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城市直流配电工程拓扑结构的研究
(1.贵州电网有限责任公司电力科学研究院;2.贵州大学电气工程学院)
The Research of Topology for Urban DC Power Distribution System
(1.Electrical Science Institute of Guizhou power grid Co,Ltd;2.Department of Electrical Engineering,Guizhou University)
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投稿时间:2018-08-13    修订日期:2019-06-12
中文摘要: 本文简要介绍了城市直流配电系统的优势和特点,介绍了国内外研究的两端“点对点”柔性直流配电系统、辐射形直流配电网、“手拉手”直流配电网、珠海三端柔性直流配电网等几种城市直流配电系统拓扑结构。在总结以上直流配电系统拓扑结构优缺点的基础上,研究设计了一种多端、中低压、交直流混合、接入多种分布式能源的城市直流配电系统拓扑结构,并应用于贵州城市直流配电示范工程。对该拓扑结构的特点、电压等级、运行方式、效能和可扩展性进行了介绍,指出该拓扑结构对于研究直流配电系统分布式能源的就地消纳,交直流配电的能效对比、运行方式的灵活性方面具有显著优势。通过自主研发的智能配电网半实物仿真平台,实现任意柔性互联交直流配电网的模拟,解决了现在直流配电网作为示范工程应用研究重复建设问题。
Abstract:This paper briefly introduces the advantages and characteristics of urban DC power distribution system. This paper introduces several kinds of urban DC distribution systems such as "point-to-point" flexible DC distribution system, radiation-type DC distribution network, "hand-hand" DC distribution network and Zhuhai three-terminal flexible DC distribution network. On the basis of summarizing the advantages and disadvantages of the topology of DC distribution system above, a kind of urban DC distribution system topology with multi-mode, medium-and low-voltage, AC-DC mixing and access to various distributed energy sources is designed and applied to the DC distribution demonstration project in Guizhou city. The characteristics, voltage class, operation mode, efficiency and extensibility of the topology are introduced, and it is pointed out that the topology can be used to study the distributed energy of DC distribution system. The comparison of energy efficiency and flexibility of operation mode of AC and DC distribution has significant advantages. Through the self-developed intelligent distribution network semi-physical simulation platform, the simulation of arbitrary flexible interconnected AC and DC distribution network is realized, which solves the problem that DC distribution network needs to be repeated as a demonstration project application research..
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基金项目:基金项目:中国南方电网公司重点科技项目“城市配电网柔性互联关键技术的研究”(GZKJQQ00000417)。
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