基于集合竞价拍卖的大规模多微网能量共享方法  

Call Auction Mechanism-Based Energy Sharing Method for Many Multiple Microgrids

作　　者：何帅 刘念 张泽坤 裴霁雪 HE Shuai;LIU Nian;ZHANG Zekun;PEI Jixue(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Source(North China Electrical Power University),Beijing 102206,China)

机构地区：[1]新能源电力系统国家重点实验室(华北电力大学),北京市102206

出　　处：《电力建设》2023年第8期128-141,共14页Electric Power Construction

基　　金：国家重点研发计划项目(2022YFB2403400)。

摘　　要：能量共享是提升多微网系统经济性、促进分布式光伏就地消纳的有效手段,而多微网能量共享的高效公平运行依赖于适合的市场框架。因此,提出了基于集合竞价拍卖的大规模多微网能量共享模型。首先,建立了基于集合竞价拍卖的能量共享市场框架,各微网以购售电双重身份向能量共享服务商提交购电和售电的投标信息。能量共享服务商的出清目标为考虑配电网过网费的多微网社会福利最大。该框架下微网仅需上报投标电价和电量,有助于保护微网的隐私。其次,建立了微网的优化运行模型,基于灵敏度分析和滑动平均滤波,得到微网关于交互电功率的边际效用。由于微网数量较多,能量共享市场处于完全竞争状态,提出了基于边际效用的微网投标策略。最后,以含20个微网的IEEE 33节点配电系统为例,验证了所提方法的有效性和可行性。Energy sharing is an effective method for enhancing the economics of multi-microgrid systems and promoting the local consumption of distributed photovoltaic systems.The efficiency and fairness of multi-microgrid energy sharing rely on a suitable market framework.Therefore,herein,an energy-sharing model,based on the call auction mechanism,is proposed for multiple microgrids.First,an energy-sharing market framework based on the call auction mechanism is established,in which each microgrid submits bids for both power purchase and sale to an energy-sharing service provider.The energy-sharing service provider aims to maximize the social welfare of multiple microgrids by considering the distribution-network costs.The microgrid in this framework only needs to submit the bid price and quantity,which helps protect the privacy of the microgrid.Second,an optimal operation model of the microgrid is established to determine the marginal utility of the microgrid in terms of interactive electric power based on sensitivity analysis and moving average filtering.Because of the large number of microgrids,the energy-sharing market is in a state of perfect competition;thus,a microgrid bidding strategy based on marginal utility is proposed.Finally,an IEEE-33 node distribution system containing 20 microgrids is used to verify the effectiveness and feasibility of the proposed method.

关 键 词：多微网 能量共享 集中竞价拍卖 过网费 边际投标 光伏消纳 

分 类 号：TM73[电气工程—电力系统及自动化]