• 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 ›› 2015, Vol. 36 ›› Issue (8): 79-83.doi: 10.3969/j.issn.1000-7229.2015.08.013

• 电力规划 • 上一篇    下一篇

特高压接入对天津500  kV电网短路电流影响及限制措施

罗涛,刘丽霞,王魁,李媛媛   

  1. 国网天津市电力公司经济技术研究院,天津市 300010
  • 出版日期:2015-08-01
  • 作者简介:罗涛(1986),男,硕士,工程师,主要从事电网规划及电力系统分析计算方面的工作; 刘丽霞(1981),女,硕士,高级工程师,主要从事电网规划及电力系统稳定分析计算方面的工作; 王魁(1988),男,硕士,主要从事输电网规划及分析计算方面的工作; 李媛媛(1988),女,硕士,主要从事输电网规划及电力系统分析计算方面的工作。

Influence of UHV Grid on Short-Circuit Current of Tianjin 500  kV Grid and Its Restrictive Measures

LUO Tao, LIU Lixia, WANG Kui, LI Yuanyuan   

  1. State Grid Tianjin Economic Research Institute, Tianjin 300010, China
  • Online:2015-08-01

摘要:

采用中国电力科学研究院开发的PSD-BPA软件,详细分析了特高压接入对天津500  kV电网的影响。天津南特高压站投产对天津500  kV电网潮流、电压和暂态稳定水平影响不大,但对短路电流影响较大,提高了天津500  kV变电站的短路水平,使得天津南和静海500  kV侧短路电流超标。针对短路电流超标问题提出限制短路电流的3种措施,采用PSD-BPA软件对3种限制措施进行分析,检验3种限制措施的效果。最后,从限制短路电流效果和对电网安全稳定运行的影响2方面对3种限制措施进行比较分析,论述了3种限制措施的优劣性。

关键词: 特高压, 天津500 , kV电网, 短路电流, 限制措施

Abstract:

With using the PSD-BPA software developed by China Electric Power Research Institute, this paper studied the influence of UHV grid on Tianjin 500  kV Grid in detail. The operation of UHV substation in Tianjin South has little influence on the current, voltage and transient stability level of Tianjin 500  kV Grid, but has large influence on the short-circuit current, which enhances the short-circuit level of Tianjin 500 kV substation, so as to the short-circuit current of Tianjin South and Jinghai substation exceeding the standard. According to the over-limitation problem of short-circuit current, this paper proposed three measures to limit the short-circuit current, analyzed three restrictive measures with using PSD-BPA software and verified those limiting effect. Finally, this paper compared these three measures from two aspects of the limiting effect for short-circuit current and the impact on the security and stability operation of power grid, and discussed the advantages and disadvantages of these three restrictive measures.

Key words: UHV, Tianjin 500 , kV Grid, short-circuit current, restrictive measures

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