中国电力 ›› 2016, Vol. 49 ›› Issue (5): 30-34.DOI: 10.11930/j.issn.1004-9649.2016.05.030.05

• 安全专栏 • 上一篇    下一篇

基于多馈入直流评估指标的江苏电网安全稳定性研究

黄俊辉1,王海潜1,汪惟源2,谢珍建1,张文嘉1,孙文涛1   

  1. 1.江苏省电力公司经济技术研究院,江苏南京210008;
    2.江苏省电力公司,江苏南京210008
  • 收稿日期:2015-12-26 出版日期:2016-05-16 发布日期:2016-05-16
  • 作者简介:黄俊辉(1965—),男,湖北黄冈人,高级工程师,从事电网规划研究及管理工作。E-mail: huangjh@js.sgcc.com.cn

Study on the Security and Stability of Jiangsu Power Grid Based on Multi-infeed DC Assessing Index

HUANG Junhui1, WANG Haiqian1, WANG Weiyuan2, XIE Zhenjian1, ZHANG Wenjia1, SUN Wentao1   

  1. 1. State Grid Jiangsu Economic Research Institute, Nanjing 210008, China;
    2. State Grid Jiangsu Electric Power Company, Nanjing 210008, China
  • Received:2015-12-26 Online:2016-05-16 Published:2016-05-16

摘要: 针对多馈入直流的接入对江苏电网安全稳定性会产生较大影响的问题,建立基于多馈入等效短路比、多馈入影响因数和换相失败系数对多馈入直流接入电网的安全稳定性评估方法,并应用于江苏电网安全稳定性仿真分析计算中。多馈入影响因数指标计算结果表明,江苏电网属于强交流系统,其安全稳定性较高,满足安全稳定运行要求。其中锦苏直流位于受端中心,容量较大,严重故障下容易发生换相失败。通过在锦苏直流近区电网安装动态无功补偿装置能够改善直流换相失败问题。

关键词: 多馈入直流, 短路比, 换相失败, 安全稳定

Abstract: Multi-infeed HVDC has significant negative impact on the security and stability of Jiangsu power grid. In this paper, an appraisal method is proposed for assessing the impact of multi-infeed DC integration on the security and stability of power grid based on the Multi-Infeed Effective Short Circuit Ratio(MIESCR), Multi-Infeed Interaction Factor(MIIF) and Commutation Failure Immunity Index(CFII), and it has been used for simulating the security and stability of Jiangsu power grid integrated with multi-infeed DC system. The simulation result shows that Jiangsu power grid has a strong AC system, which is high in security and stability and can satisfy the requirement for safe operation. The Jinping-Suzhou UHVDC system is located in the center of receiving end with huge capacity, which is vulnerable in commutation failure. In order to solve this problem, the dynamic reactive power compensation can be used in the power grid near the Jinping-Suzhou UHVDC system.

Key words: multi-infeed HVDC, short circuit ratio, commutation failure, power grid security and stability

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