大容量多端柔性直流系统换流站布置方案研究

发布时间：2018-06-28 19:34

本文选题：柔性直流换流站设计 + 直流系统电气主接线　；参考：《华北电力大学(北京)》2017年硕士论文

【摘要】：柔性直流输电技术能解决目前交直流输电面临的诸多技术瓶颈,是构建智能电网的重要技术手段。为满足柔性直流输电容量进一步提升的需求,对大容量多端柔性直流系统换流站的设计势在必行。本文的研究以目前正在规划的张北可再生能源柔性直流电网示范工程为背景,开展3000MW柔性直流换流站的布置方案研究,分别从电气主接线、主要设备选择和分区域布置3个方面出发,通过研究分析、仿真计算和分区域固化模块等方法,提出了3000MW柔性直流换流站的布置的概念设计,提出了该容量换流站采用双极对称+金属回线,直流出线采用单母线接线的技术方案,明确了双极对称接线情况下换流阀、直流断路器、换流变等关键设备的选型,研究并提出了阀厅、户外直流场和换流变区域3个模块的布置方案,并以功能分区明确、布置方正为目的,得到了一个适应3000MW柔性直流换流站的整体布置方案。本文的研究成果,对3000MW柔性直流换流站的布置起到了一定的指导作用,为今后实际大容量多端柔性直流换流站的工程实施提供了技术支持。
[Abstract]:Flexible direct current (HVDC) transmission technology can solve many technical bottlenecks faced by AC / DC transmission and is an important technical means to construct smart grid. In order to meet the need of further enhancing the capacity of flexible DC transmission, it is imperative to design the converter station of large capacity multi-terminal flexible DC system. In this paper, based on the demonstration project of Zhangbei flexible direct current network for renewable energy, the layout scheme of the 3000MW flexible DC converter station is studied, respectively from the main electrical connection. Based on three aspects of main equipment selection and sub-area layout, the conceptual design of 3000MW flexible DC converter station layout is put forward by means of research and analysis, simulation calculation and sub-area solidification module, etc. This paper puts forward the technical scheme that the capacity converter station adopts the bipolar symmetrical metal loop and the DC outlet using the single bus connection. The selection of the key equipment such as converter valve, DC circuit breaker, rheology and so on under the condition of bipolar symmetrical connection is defined. The layout scheme of three modules, valve hall, outdoor DC field and rheological exchange zone, is studied and put forward, and an overall layout scheme adapted to 3000MW flexible DC converter station is obtained for the purpose of clear functional partition and positive layout. The research results of this paper have played a guiding role in the layout of the 3000MW flexible DC converter station and provided technical support for the practical project implementation of the multi-terminal flexible DC converter station in the future.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM721.1

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