• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2017, Vol. 38 ›› Issue (4): 112-.doi: 10.3969/j.issn.1000-7229.2017.04.015

• 特高压输电 • 上一篇    下一篇

 大容量直流输电系统的受端接入模式比较

 朱林1,高琴1,蔡泽祥1,张东辉2,金小明2,周保荣2

 
  

  1. 1.华南理工大学电力学院,广州市 510640;2. 南方电网科学研究院,广州市 510080
     
  • 出版日期:2017-04-01
  • 作者简介:朱 林(1979),男,副教授,硕士生导师,主要研究方向为电力系统稳定与控制、直流输电技术; 高 琴(1992),女,硕士研究生,本文通信作者,主要研究方向为电力系统稳定与控制、直流输电技术; 蔡泽祥(1960),男,教授,博士生导师,主要研究方向为电力系统保护、控制与自动化; 张东辉(1984),男,高级工程师,主要研究方向为电力系统稳定分析、控制与规划; 金小明(1963),男,教授级高级工程师,主要研究方向为电力系统规划、分析与直流输电技术; 周保荣(1974),男,博士,高级工程师,主要研究方向为电力系统规划与分析。
  • 基金资助:
     国家自然科学基金项目(51407079)

 Comparison and Analysis of Receiving-End Connection Modes for Large-Capacity HVDC
 

 ZHU Lin1, GAO Qin1, CAI Zexiang1, ZHANG Donghui2, JIN Xiaoming2, ZHOU Baorong2

 
  

  1.  1. School of Electric Power, South China University of Technology, Guangzhou 510640, China; 
     
    2. Electric Power Research Institute of China Southern Power Grid, Guangzhou 510080, China
  • Online:2017-04-01
  • Supported by:
     Project supported by the National Natural Science Foundation of China (51407079)
     

摘要:  摘  要:首先分析了大容量直流输电(large-capacity high voltage direct current,large-capacity HVDC)系统常规接入模式(general connection mode,GCM)、分极接入模式(separate poles mode,SPM)和分层接入模式(hierarchical connection mode,HCM)的结构特点,对比了3种接入模式对系统中其他直流系统多馈入短路比(multi-feed short-circuit ratio,MISCR)的影响,并得到落点选择的约束条件,使受端交流系统对直流系统的电压支撑能力整体提升,较好地平衡了限制短路电流与增加多馈入短路比间的矛盾。之后,提出了基于最大功率曲线法的静态稳定接纳系数指标用于判断受端电网接纳直流功率的能力。最后,结合南方电网2020年的规划数据,从多个方面对比分析了3种接入模式的优缺点,为直流系统接入模式的规划提供决策参考和技术支撑。

 

关键词:  , 大容量直流输电(large-capacity HVDC), 常规接入模式(GCM), 分极接入模式(SPM), 分层接入模式(HCM), 多馈入短路比(MISCR), 静态稳定接纳系数

Abstract:  ABSTRACT:  This paper firstly analyzes the structural characteristics of three connection modes for large-capacity high voltage direct current (large-capacity HVDC) systems: general connection mode (GCM), separate poles mode (SPM) and hierarchical connection mode (HCM), compares the impacts of these three connection mode on the multi-feed short-circuit ratio (MISCR) of other DC systems and obtains the constraint conditions of placement selection, which can improve the voltage supporting ability of receiving-end AC system for DC system, and better balance the contradiction between the short circuit current limiting and multi-feed short-circuit ratio (MISCR). And then this paper puts forward a margin receiving indicator of steady-state stability to evaluate the DC power absorbing ability of receiving system based on the maximum power curve method. Finally, combing with the 2020 planning data from the China Southern Power Grid, this paper compares and analyzes the advantages and disadvantages of the 3 access modes from several aspects, which can provide decision reference and technical support for the planning of DC system access mode.

 

Key words:  large-capacity HVDC, general connection mode (GCM), separate poles mode (SPM), hierarchical connection mode (HCM), multi-feed short-circuit ratio (MISCR), margin receiving indicator of steady-state stability

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