摘要
极端场景下微电网与主网断开形成多个孤岛时,微电网内重要负荷的持续可靠供电面临极大挑战。微电网群内的电动汽车储能参与负荷支撑是提高系统韧性的有效技术手段。针对微电网孤岛供电问题,提出了一种基于电动汽车储能的多微电网两阶段韧性提升策略。首先,建立正常运行时多微电网能量管理模型,通过协调系统内各类发电资源进行能量互济,实现运行成本最小化。然后,针对台风极端事件引起的孤岛微电网持续可靠供电问题,通过多微电网各类发电资源和电动汽车储能进行能量互济,构建了多微电网两阶段韧性提升模型,最大限度地减少切负荷量,使系统运行成本最优。最后,采用Shapley值对涌现收益进行合理分配,并通过与传统多微电网能量管理方法进行对比,验证了所提韧性提升策略的有效性。
An island microgrid is formed when the microgrids are disconnected from the grid in an extreme scenario.Thus the sustainability and reliability of power supply for critical loads in microgrids faces great challenges.The participation of electric vehicle(EV)energy storage in load support within the microgrid cluster is an effective technical means to enhance system resilience.Therefore,addressing the issue of power supply for island microgrids,a two-stage resilience enhancement strategy based on EV energy storage is proposed.First,an energy management model is established for normal operation,aiming to minimize operating costs by coordinating various power generation resources within the system for energy exchange.Second,in response to the issue of sustained and reliable power supply for isolated microgrids caused by extreme typhoon events,a two-stage resilience improvement model for a multi-microgrid is constructed by using various power generation resources and electric vehicle energy storage to achieve energy exchange.This model minimizes load shedding and optimizes system operating costs.Finally,the Shapley value is used to allocate the emerging benefits reasonably,and the effectiveness of the proposed resilience improvement strategy is verified by comparing it with traditional multi-microgrid energy management methods.This work is supported by the National Natural Science Foundation of China(No.52377110).
作者
孙科
陈文钢
陈佳佳
尹文良
SUN Ke;CHEN Wengang;CHEN Jiajia;YIN Weniang(College of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China)
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2023年第24期53-65,共13页
Power System Protection and Control
基金
国家自然科学基金项目资助(52377110)。
