基于青海地区在运光伏电站监测数据的容配比提升分析

随着光伏发电技术进步,近年来光伏组件价格呈快速下降趋势,于是对早期光伏电站进行大规模的光伏组件扩容翻新有了实质性的经济意义。根据青海地区正在运行的光伏电站的实时监测数据,建立光伏组件-逆变器限电率模型,以度电成本(LCOE)为考核指标,分析在不同扩容工程的工程造价影响下,光伏组件-逆变器容配比(下文简称“容配比”)与LCOE的敏感性关系,以确定在运光伏电站扩容后的最佳容配比,为未来光伏电站扩容设计提供指导方法。

ANALYSIS OF CAPACITY RATIO INCREASING BASED ON DATA OF PV POWER STATION IN OPERATION IN QINGHAI

With the development of PV power generation technology in recent years,the price of PV modules has fallen rapidly.For early-stage PV power stations,the increase of the PV power station capacity ratio has economic benefits.Based on the analysis of the real-time monitoring data of PV power stations in operation in Qinghai,this paper establishes a model of the curtailment rate of PV inverters.Taking the levelized cost of electricity(LCOE)as the evaluation index,the relationship between the capacity ratio and LCOE under different project cost of expansion projects is analyzed.This result can be used as the criterion of the optimal capacity ratio for the increase of PV module capacity of PV power station in operation,and provide a guide method for the expansion design of the future PV power station.