基于综合发电收益的分布式光伏系统规划研究

为实现分布式光伏系统综合发电收益最优,首先建立了光伏DG系统综合收益模型,并结合工程实践,归纳出组成光伏DG系统的四种典型拓扑结构,通过分析拓扑结构中各节点特点,提出直流系统电压等级、系统容量配比、系统集成简化、系统功率平衡四种影响分布式光伏综合发电收益的关键指标;其次分析各关键指标的经济变量,得出光伏DG系统总体优化成本变量曲线。研究结果表明,随装机容量的增加,系统总体成本相应增加,度电收益基本稳定;综合收益模型优化后成本降低,度电收益提高。研究结果为降低工程造价和单位度电成本提供借鉴。

Research on Distributed PV System Planning Based on Comprehensive Generation Income

To realize comprehensive power gains the optimal distributed photovoltaic systems, photovoltaic (pv) was established by the comprehensive income model of DG system and combined with engineering practice, summing up the four kinds of typical of photovoltaic DG system topology structure, through analyzing the characteristics of the topology structure of each node, put forward dc system voltage level, simplified ratio of system capacity, system integration, system of power balance four influence the key indicators of comprehensive distributed photovoltaic power generation benefits;Secondly, the economic variables of each key index are analyzed, and the total optimization cost variable curve of pv DG system is obtained.The results show that the overall cost of the system increases with the increase of installed capacity, and the electric income is basically stable.Through the optimization of the comprehensive income model, the cost is reduced and the electric benefit is improved.The results can be used to reduce the cost of engineering and the cost of electrical unit.