中国电力 ›› 2015, Vol. 48 ›› Issue (5): 64-67.DOI: 10.11930.2015.5.64

• 安全专栏 • 上一篇    下一篇

计及风电出力不确定性的配电网保护策略研究

钱利宏1,王玮1,魏华2,何昊3   

  1. 1. 北京交通大学 国家能源主动配电网技术研发中心,北京 100044;
    2. 北京电信规划设计院有限公司,北京 100044;
    3. 国网吉林省电力有限公司辽源供电公司,吉林 辽源 136200
  • 收稿日期:2014-12-01 出版日期:2015-05-25 发布日期:2015-11-27
  • 作者简介:钱利宏(1986—),男,江西上饶人,硕士研究生,从事电力系统继电保护和配电网保护研究。E-mail: kevin_0627@163.com

Research on Protection Schemes for Distribution Network Considering Wind Power Supply Uncertainty

QIAN Lihong1, WANG Wei1, WEI Hua2, HE Hao3   

  1. 1. National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China;
    2. Beijing Telecom Planning & Designing Institute Co., Ltd., Beijing 100044, China;
    3. Jilin Liaoyuan Power Supply Corporation of State Grid, Liaoyuan 136200, China
  • Received:2014-12-01 Online:2015-05-25 Published:2015-11-27

摘要: 随着配电网中风电渗透率的不断提高,配电网的拓扑结构有了很大的变化,传统的配电网保护受其影响严重,将会出现保护可靠性和灵敏性降低以及选择性失效等问题。同时,风电的出力及运行特性易受风速、风向等自然条件的影响,具有不确定性,加剧了保护的复杂程度。通过分析风电的运行特性及其接入配电网后各故障电流的分布情况,提出了一种适用于不受其接入风电出力不确定性影响的配电网的分区域保护方案,并以某含风电的10 kV配电网为例,通过仿真分析,验证了该方案的有效性。

关键词: 电力, 风电, 配电网, 不确定性, 分区, 保护

Abstract: The distribution network topology varies significantly with continuous improvement of wind power interconnection. The traditional protection scheme for the distribution network is severely affected with reduced protection reliability, sensitivity and failure of selectivity. Furthermore, the operational characteristics of wind power are susceptible to uncertain wind speed and directions, which add more complexity to protections. A sub-regional protection method with consideration of wind power supply uncertainty is proposed. The novel method is based on the analysis of wind power operational characteristics and reluctant to the wind power generation uncertainty. The simulation result verifies validity and effectiveness of proposed protection method.

Key words: electric power, wind turbines, distribution network, uncertainty, sub-regional, protection

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