• 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 ›› 2016, Vol. 37 ›› Issue (10): 54-.doi: 10.3969/j.issn.1000-7229.2016.10.008

• 输配电技术 • 上一篇    下一篇

特高压直流输电分极接入运行特性分析

王旌1, 韩民晓1,姚蜀军1,田春筝2,司瑞华2,唐晓骏3   

  1. 1.华北电力大学电气与电子工程学院, 北京市102206;2. 国网河南省电力公司 经济技术研究院,郑州市 450000;3. 中国电力科学研究院,北京市100192
  • 出版日期:2016-10-01
  • 作者简介:王旌(1993),女,硕士研究生,主要研究方向为高压直流输电; 韩民晓(1963),男,教授,博士生导师,主要研究方向为直流输电、柔性交流输电、电能质量分析等; 姚蜀军(1973),男,副教授,硕士生导师,主要研究方向为电力系统建模与仿真; 田春筝(1982),男,硕士,研究方向为电力系统规划、电力系统建模与仿真; 司瑞华(1984),男,硕士,研究方向为电力系统稳定分析与控制; 唐晓骏(1978),男,工程师,研究方向为电力系统运行控制技术。
  • 基金资助:
    国家电网公司科技项目(XTB51201601116)

Operation Characteristic Analysis for UHVDC Transmission in Separating Pole Connection Mode

WANG Jing1, HAN Minxiao1, YAO Shujun1, TIAN Chunzheng2, SI Ruihua2, TANG Xiaojun3   

  1. 1. School of Electrical&Electronic Engineering, North China Electric Power University, Beijing 102206, China; 2. Henan Electric Power Company Economic Research Institute, Zhengzhou 450000, China; 3. China Electric Power Research Institute, Beijing 100192, china
  • Online:2016-10-01

摘要: 为了从电网结构上有效解决传统两端特高压直流输电系统因大容量功率传输对受端交流系统冲击较大的问题,该文提出了采取分极接入交流电网的方式,将直流功率输送至2个不同区域、不同电压等级的电网中。建立了分极接入模式下交直流系统的等效模型,给出了分极接入短路比定义,并分析了分极接入模式下短路比对功率传输能力的影响;基于对特高压直流输电控制系统分层结构的分析,对分极接入控制系统结构配置方案进行优化;以河南电网2020年规划为依据,应用PSCAD/EMTDC仿真验证了控制策略的合理性并对故障响应进行了分析,研究一极发生故障对健全极功率传输的影响,验证了分极接入的优势,为特高压直流输电的电网规划提供设计参考。

关键词: 特高压直流输电, 分极接入, 短路比, 控制系统, 暂态响应

Abstract: The traditional two-terminal UHVDC transmission system has big impact on the receiving end because of its great capacity of power transmission. For this problem, this paper proposes a novel separating pole connection (SPC) mode, which can transmit power to two receiving power systems in different locations and voltage degrees. Firstly, this paper establishes the equivalent model of AC/DC system under SPC mode, presents the improved definition of separating pole connection short circuit ratio (SPCSCR), and analyzes the abilities of power transmission related with SPCSCRs. Based on the analysis on the layered structure of UHVDC transmission control system, this paper optimizes the structure configuration scheme of the SPC control. Based on the Henan Grid Planning in 2020, this paper verifies the rationality of the control strategy and analyzes its fault response through the simulation in PSCAD/EMTDC. Finally, this paper studies the impact of one pole fault on other poles power transmission, verifies the advantage of SPC, which can provide design reference for the grid planning of of UHVDC transmission.

Key words: UHVDC transmission, separating pole connection, short circuit ratio, control system, transient response

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