考虑储能和需求侧响应的微网光伏消纳能力研究

Research on the accommodation of photovoltaic power considering storage system and demand response in microgrid

在光伏发电迅速发展的情况下,分布式光伏的消纳成为人们关注的热点。构建了含有分布式光伏、储能系统以及需求侧响应的光伏微网系统。以光伏发电消纳量最大为首要目标,同时考虑微网系统的用电成本,并加入功率平衡、微网可靠性、储能系统功率上下限、需求侧响应以及光伏出力界限等约束条件。为了对比分析储能和需求侧响应对微网光伏消纳的影响,设立不考虑储能系统和需求侧响应、只考虑储能系统、只考虑需求侧响应、同时考虑储能系统和需求侧响应4种情景,使用改进帝国竞争算法解决约束条件较多的问题。通过对比发现,借助储能系统和需求侧响应能够有效地提高微网中分布式光伏的消纳率,同时也保证了微网用电的经济性。

In the case of the rapid development of distributed photovoltaic, the absorption of photovoltaic power has become an issue of concern. This paper establishes a microgrid system containing photovoltaic, energy storage system and demand response. The primary target is to maximize the absorption of photovoltaic power, and also considers minimizing the cost of power using. It sets several constraints for the objective function, including power balance, reliability of the microgrid, power bound of energy storage system, demand response and limit of pbotovoltaic output. In order to analyze the effects of energy storage and demand response on the absorption of photovoltaic, it sets four scenes including not considering energy storage system or demand response, only considering energy storage system, only considering demand response, considering both energy storage system and demand response. It uses the modified MICA to solve the problem of too many constraints. By comparison, it finds that using energy storage system and demand response can improve the absorption of photovoltaic power and also ensure the economic benefits at the same time.