含多种分布式电源的微电网经济调度研究

Research on economic dispatch of microgrid with multi-distributed generation

微电网的优化调度是一个新的具有重要社会和经济效益的复杂问题。基于实际风光资源、负荷和微电网运行成本数据,将用户效益、环境保护以及社会效益量化为运行及维护成本、未满足负荷、污染气体排放量、容量短缺等指标,采用模糊评价函数将多目标转化为单目标,提出了针对该微网的短期经济优化调度模型。选取一年中的典型情况为算例进行经济运行分析,并采用小生境遗传算法进行求解,得出了在各典型情况下各微电源的最优出力和最佳电能交易计划,验证了所提调度策略的正确性与有效性。

The optimal dispatch of microgrid is a new complex issue with both important social benefits and economic benefits. In this paper, based on the actual meteorological data, the actual load data, and the actual microgrid＇ s operation cost data, the user benefits, the environmental protection and the social benefits are quantized into the indices of operation and maintenance cost, deficient load, pollution gas emissions and capacity shortage. Fuzzy evaluation function is adopted to convert the multi-objective into the single-objective, and the short term optimal e- conomic dispatch model of the microgrid is proposed. The Niche-based genetic algorithm is adopted to solve the e- conomic operation examples of typical days of a year, and then obtain the optimal output of each micro-source and the corresponding best power trading scheme in each typical ease. The results demonstrate the feasibility and the effectiveness of the proposed dispatch strategies.