极端自然环境下配电网快速复电弹性研究

Research on Rapid Restoration Resilience of Distribution Network in Extreme Natural Environments

极端自然环境对电网有着极大的威胁。配电网作为电网中相对薄弱部分,更易受到自然环境的影响,而配电网和用户直接相关,因此急需提升配电网快速复电弹性。文中基于极端自然环境提出了一种“灾前-灾中-灾后”三阶段弹性提升策略。首先,从薄弱地点硬件能力方面提升灾前预先准备能力;随后,从事故预案方面提升灾中抵御吸收、响应适应能力;然后,从全感知配电网自愈技术方面提升灾后快速恢复能力;最后,介绍了浙江地区配电网在快速复电弹性、抗台风和雷电方面的实际工程经验,为其他地区在极端自然环境下配电网快速复电弹性建设提供参考。

The extreme natural environments are the great threat to power grid. As the relatively weak part of power grid, the distribution network is more vulnerable to natural environments. Moreover, the distribution network is directly related to the customers, so it is urgent to improve the rapid restoration resilience of distribution network. Therefore, a three-stage resilience enhancement strategy based on "pre-disaster-disaster-post-disaster" is proposed for extreme natural environments. Firstly, the pre-disaster preparation capability is improved in terms of hardware capability at weak location. Secondly, the resilience and absorption, response and adaptation capability in the disaster are enhanced in accident plan, and then the post-disaster rapid recovery capability is enhanced in terms of full-awareness distribution grid self-healing technology. Finally, the actual engineering experiences in Zhejiang region in terms of rapid restoration resilience, typhoon and lightning resistance are introduced, which will provide a reference for other regions in building rapid restoration resilience of distribution grid under extreme natural environments.