考虑微网综合性能的并网型微网优化配置模型

摘要

For grid-connected microgrid, this paper proposes an evaluation index system, which contains reliability, autonomy, regulation of interactive power, environment-friendly degree and utilization of tie-line and renewable energy, and then translates them into the form of constraint. In conjunction with the output characteristic of distributed generators, and taking the lowest total cost as objective function, it constructs the optimal planning model of microgrid. Based on the real data of load and meteorological, this paper analyzes the effect of index constraints to capacity allocation of microgrid, and the relationship between different indicators. The results show that the index system improves the rationality of the optimized allocation and enhances the flexibility of the optimization model, meeting the diversification demand of users.%针对并网型微网,提出了包含可靠性、自治能力、交互功率波动性、环境友好度、联络线及新能源利用率的微网综合性能评估指标体系,并将其转化为约束形式.结合各分布式电源出力特性,以规划总成本最低为目标函数,构建了微网优化配置模型.基于某地区实际负荷和气象数据,分析了各类指标约束对微网容量配置的影响及不同指标间的关系.分析结果表明该指标体系提高了并网型微网优化配置结果的合理性,增强了优化模型工程应用的灵活性,满足用户的多样化需求.