基于实时电价的产消者综合响应模型

产消者作为新兴的特殊电力消费者,拥有电力供给和消费的双重角色,具有较强参与实时市场的响应潜力。为提高分布式发电利用率和用户供用电收益,提出基于实时电价的产消者的多阶段综合响应模型。前期优化阶段,综合考虑用户用电经济性、舒适度和电价激励作用,提出用户最优小时需求出价模型;以用户供电收益最大为目标,考虑储能容量和功率约束、储能闭锁和动作死区等因素,提出用户最优小时供给报价模型。出清响应阶段,基于实时电价,结合用户最优小时供需出报价信息,提出用户可控负荷需求响应和分布式发电—储能系统供给响应交替的综合响应模型。算例分析表明,所提综合响应方法能及时响应实时电价的波动,不仅灵活削减和转移了用户在电价高峰区的负荷,而且实现了分布式发电供给从低电价区域向高电价区域的转移,提高产消者供用电的经济性。

Real-time Electricity Price Based Integrated Response Model for Prosumers

Prosumers, a group of special end-users emerging in recent years, have the dual roles of power supply and consumption with high potential in responding to the real-time market. In order to improve the efficiency of distributed generation and profits of energy supply and consumption, a multi-stage integrated response model is proposed for prosumers based on real-time electricity price. In the stage of pre-optimization, an hourly optimal demand bidding model is established with a comprehensive goal considering the incentive effect on economic, comfort and price of power consumption. With the goal of maximizing the profits of energy supply and considering the factors e. g. storage capacity and charge/discharge power constraints, storage blocking and dead zone, an hourly optimal supply offering model is presented. In the stage of response, an integrated response model is developed based on real-time electricity price and using hourly optimal demand bidding and supply offering information. It is essentially a model alternated by demand response for controllable load and supply response for distributed generation-storage system. Case study shows that the proposed integrated response approach not only notably reduces and shifts load at a high real-time price, but also successfully transfers power supply from low electricity price zones to high electricity price zones, which significantly improves the economics of power supply and consumption.