摘要
微网以一种更为有效的方式集成了分布式能源、储能设备和可控负荷。经济调度是微网经济运行的关键,该文从供能和负荷控制角度对微网经济优化调度问题进行研究。综合考虑不同用电特性的可平移负荷单元,建立可平移负荷模型,并提出负荷平移求解策略。将经济调度视为离散最优控制问题,构建基于动态规划的微网经济优化调度模型。然后将其转化为二次规划问题,采用预估校正内点算法求解。算例分析了负荷平移对调度结果的影响,从而验证了所提模型和算法的有效性。
Microgrid integrates distributed energy resources, storage devices and controllable loads in a more effective way. Economic dispatch for microgrid is the key to economic operation of microgrid. This paper studies the problem of optimal economic dispatch for microgrid from the views of energy supply and load control. Considering shiftable load units with different load consumption characteristics, the model of shiftable load and the strategy for load shifting are proposed. The economic dispatch problem is regarded as a discrete-time optimal control problem, and the optimal economic dispatch model for microgrid based on dynamic programming is established. Then it is converted to a quadratic programming problem and the predictor-corrector interior-point algorithm is adopted to solve it. Examples analyze the influence of load shifting on the dispatch results, which prOve the validity of proposed model and algorithm.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2014年第16期2612-2620,共9页
Proceedings of the CSEE
基金
上海市重点支撑攻关计划(13160500800)
上海绿色能源并网工程技术研究中心(13DZ2251900)
国家自然科学基金资助项目(51177098)~~
关键词
微网
可平移负荷
经济调度
动态规划
二次规划
预估校正内点算法
microgrid
shiftable loads
economic dispatch
dynamic programming
quadratic programming
predictor-corrector interior-point algorithm
