考虑负荷重要性的微电网电源容量优化配置

微电网内负荷分为重要负荷和可中断负荷。该文采用粒子群优化算法,在根据负荷特性的分布式电源选址基础上,对并网运行的高渗透微电网和低渗透微电网进行电源容量优化,并考虑电压水平、微电网对大电网的渗透性、分布式电源容量的限制,采用分布式电源折算到每年的建设费用、运行维护费用、向上级大电网售电或购电费用、网络损耗费用的经济性模型。该模型符合现实优化要求,算法求解效率高,其结果更具有实用性和经济性,对实际的微电网规划具有一定的指导意义。

Micro grid generation capacity optimization with consideration of load importance

Load in micro grid can be divide into the important load and the interruptible load. After the DG site ascertained according to characteristic of load,this paper proposed a new model for the DG size optimization of the high penetration ratio and low penetration ratio micro gird on parallel operation. The economic model includes the network power losses, DG installing and operating expenditure which is discounted to present value,the electric selling incomes from the superior system or buying costs to the superior system,and voltage levels, micro grid permeability, DG capacity constraints are also taking into account. Through the particle swarm algorithm, this model guarantees the practicality and economy of results, and it also has certain guidance for micro grid planning.