考虑保障收购年利用小时数的光伏发电系统最佳容配比分析

ANALYSIS OF OPTIMAL PV/INVERTER RATIO OF PV POWER GENERATION SYSTEM CONSIDERING GUARANTEED ACQUISITION ANNUAL UTILIZATION HOURS

针对目前普遍通过分析度电成本来确定光伏发电系统最佳容配比(光伏组件的标称功率之和与逆变器功率的比值)的现状,本文提出了一种采用净现值法确定已设定保障收购年利用小时数的光伏发电系统最佳容配比的方法。以太阳能资源较好的银川地区为例,通过计算该地区建立的光伏电站在不同保障收购年利用小时数下的净现值,分析了不同交易电价、不同保障收购年利用小时数对光伏发电系统最佳容配比的影响,最终给出了考虑保障收购年利用小时数时光伏发电系统最佳容配比的变化规律。

In view of the current situation that the optimal PV/inverter ratio(ratio of sum of the nominal power of PV modules to the inverter power)of PV power generation system is generally determined by LCOE,this paper proposes a method to determine the optimal PV/inverter ratio of PV power generation system that have been set to guaranteed acquisition annual utilization hours by using net present value method.Taking Yinchuan area with better solar energy resources as an example,by calculating the net present value of PV power station established in this area under different guaranteed acquisition annual utilization hours,and analyzing the influence of different transaction electricity prices and different guaranteed acquisition annual utilization hours on the optimal PV/inverter ratio,it is finally given the change rule of optimal PV/inverter ratio by considering guaranteed acquisition annual utilization hours.