摘要
基于年负荷持续曲线,建立了一种确定配电网中分布式电源最优安装容量的双层优化模型。模型中,分布式电源为独立投资商所有。上层优化的主体方为分布式电源投资商,投资商通过决策各类发电机的安装容量及相应的合同电价,使投资收益最大化;下层优化的主体方为配电网运营方,配电网运营方通过调度各类电源出力,使得自身运行成本最小。运用KKT最优化条件将下层优化问题转化为上层约束,利用分支定界算法求解。算例仿真分析结果表明:安装DG对投资商和配电网运行均有明显的经济效益;DG能明显的降低网损,减少网络阻塞。
Based on the annual load duration curve, a bilevel optimization model is set up to determine the optimal installation capacity of distributed generation in distribution network.In this model, the distributed generation is owned by independent investor. The subject of upper-level is the independent investor of distributed generation, which maximizes his investment profit by deciding the installation capacity of various generators and the corresponding contract price.The subject of lower-level is distribution network operator, which minimizes the operating costs through the dispatch of various types of power. The lower-level optimization problem can be converted to the upper bound using the Karush-Kuhn-Tucker optimality conditions. Then, this single level optimization model can be solved by branchand-cut solvers. The simulation results show that the installation of DG has obvious economic benefits for investors and distribution network operation. DG can significantly reduce network loss and network blocking.
出处
《智慧电力》
2017年第8期90-95,102,共7页
Smart Power
关键词
年负荷持续曲线
分布式电源
容量规划
双层优化
annual load duration curves
distributed generation
capacity planning
bilevel optimization
