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首页> 外文会议>Conseil International des Grands Reseaux Electriques;International Council on Large Electric Systems;CIGRE session >RD progress of ±1100kV UHVDC technology
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RD progress of ±1100kV UHVDC technology

机译：±1100kV特高压直流技术的研发进展

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摘要

The successful construction and reliable operation of Xiangjiaba-Shanghai project fully proved theperformance of ±800kV UHVDC technology. Considering the huge power export of Sinkiang andTibet area, SGCC (State Grid Corporation of China) started R&D of higher voltage level UHVDCtechnology on 2008. Considering the capacity and distance of power transmission, the economics ofdifferent voltage level development were evaluated as well as the feasibility of key equipments. On theend of 2010, several key parameters are decided. For the 10,000MW power transmission over 2350kMor longer, the selected rated voltage is ±1100kV, and rated current is 4750A with capacity 10,450MW.In addition, the R&D schedule is presented.In this paper, the current R&D progress and the scheduled study of ±1100kV UHVDC are presented.The content is organized into six parts.In part I, the basics and operation status of Xiangjiaba-Shanghai project is given. Then, the demand of±1100kV project is introduced, as well as pilot project.In part II, the R&D progress of key technology is given. Main circuit scheme and the technicalspecification of equipments are introduced. The main circuit configuration is same with Xiangjiabaproject. The two series converter scheme is connected with equivalent voltage distribution in one pole.By optimizing the configuration and parameters of surge arresters, the over-voltage level is suppresseddeeply including AC side and valve side of transformer, critical points in DC circuit, etc. Theinsulation level is also proposed. The study of external insulation and electromagnetic environment,are presented, which have significant impact on the project construction cost. The length of insulatorsand air clearance are proposed.,In third part, the R&D progress of key equipment is introduced. Firstly, the crucial points of all DCequipments are reviewed, and give possible solution. Secondly, the roadmap and technical solution ofconverter transformer and wall bushing is discussed ,In part IV, the scheme of converter transformer on-site assembling is proposed. Due to thetransportation limit, it is impossible to transport the whole transformer to Sinkiang area by railway orroad. Then, the on-site assembling idea is proposed and studied. In the scheme, the high-end valve hallof pole II is used for transformer assembling. The current technical solutions are introduced includingmanufacture, fault treatment and test. In addition, the preliminary manufacture and test equipmentlayout in valve hall is also given. Then, this paper discusses the key points in the solution, and ideas.In part V, the R&D of next step is presented.
机译：向家坝—上海项目的成功建设和可靠运行充分证明了这一点。 ±800kV特高压直流技术的性能。考虑到新疆的巨大电力出口和 国家电网公司西藏自治区西藏自治区高电压特高压直流输电技术研发 技术在2008年。考虑到输电能力和距离， 评估了不同电压等级的开发以及关键设备的可行性。在 2010年底，确定了几个关键参数。超过2350kM的10,000MW输电 或更长的时间，所选的额定电压为±1100kV，额定电流为4750A，容量为10,450MW。 此外，还列出了研发时间表。 本文介绍了当前的研发进展和±1100kV特高压直流输电的计划研究。 内容分为六个部分。 第一部分给出了向家坝—上海项目的基本情况和运行状况。然后，需求 介绍了±1100kV项目以及试点项目。 第二部分给出了关键技术的研发进展。主电路图及技术 介绍设备规格。主电路配置与向家坝相同 项目。两串联转换器方案在一个极中以等效电压分布连接。 通过优化电涌放电器的配置和参数，可以抑制过电压电平 包括变压器的交流侧和阀门侧，直流回路中的关键点等。 还提出了绝缘等级。对外部绝缘和电磁环境的研究， 介绍，这对项目的建设成本有重大影响。绝缘子长度 和空气间隙的建议。， 第三部分介绍了关键设备的研发进展。首先，所有DC的关键点 审查设备，并提供可能的解决方案。其次，路线图和技术解决方案 讨论了换流变压器和墙壁套管， 第四部分提出了换流变压器的现场组装方案。因为 运输限制，不可能将整个变压器通过铁路或铁路运输到新江地区 路。然后，提出并研究了现场组装的思想。在方案中，高端阀门大厅 极II的极数用于变压器组装。介绍了当前的技术解决方案，包括 制造，故障处理和测试。此外，初步制造和测试设备 还给出了阀室的布局。然后，本文讨论了解决方案中的关键点和思路。 在第五部分中，介绍了下一步的研发。

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