采用柔性直流技术的智能配电网接入交流电网方式

发布时间：2018-09-19 12:41

【摘要】：基于柔性直流技术的智能配电网与交流电网的连接方式是系统设计的基础,也是直流配电中的关键技术之一,为此针对±10kV基于柔性直流技术的智能配电网接入交流电网的方式开展了理论和仿真分析。首先从理论上简要分析了其与10kV交流配电网之间可能的连接方式及各种连接方式下交直流系统故障之间的相互影响。然后在电磁暂态仿真软件PSCAD/EMTDC中建立不同连接方式下的仿真模型并开展典型故障下的仿真计算,从过电压和过电流的角度分析交直流系统故障间的相互影响。最后,从系统运行可靠性和经济性的角度提出基于柔性直流技术的智能配电系统与交流电网之间推荐的连接方式,即直流配电系统通过联接变压器与交流电网连接。
[Abstract]:The connection between smart distribution network and AC power network based on flexible DC technology is the basis of system design and one of the key technologies in DC distribution. For this reason, the theory and simulation analysis of the way of connecting the smart distribution network to AC power grid based on the flexible DC technology of 卤10kV is carried out. In this paper, the possible connection modes with 10kV AC distribution network and the interaction between AC and DC system faults under various connection modes are analyzed in theory. Then the simulation models under different connection modes are established in the electromagnetic transient simulation software PSCAD/EMTDC and the simulation calculation under typical faults is carried out. The interaction between AC / DC system faults is analyzed from the point of view of overvoltage and overcurrent. Finally, from the point of view of the reliability and economy of the system operation, the recommended connection between the intelligent distribution system and AC power network based on flexible DC technology is proposed, that is, the DC distribution system is connected to the AC power network through the connection transformer.
【作者单位】：华南理工大学电力学院;深圳供电局有限公司;
【基金】：国家高技术研究发展计划(863计划)资助项目(2013AA050104) 国家自然科学基金资助项目(51541704) 广东省自然科学基金资助项目(2014A030313249)~~
【分类号】：TM721.1

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