基于PVsyst软件的光伏电站PR影响因素的灵敏度分析  

SENSITIVITY ANALYSIS ON INFLUENCING FACTORS OF PV POWER STATION PR BASED ON PVsyst SOFTWARE

作　　者：李腾飞 刘雁羚 Li Tengfei;Liu Yanling(Southwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Chengdu 610057,China)

机构地区：[1]中国电力工程顾问集团西南电力设计院有限公司,成都610057

出　　处：《太阳能》2024年第10期52-60,共9页Solar Energy

摘　　要：随着全球光伏行业的蓬勃发展及高度竞争,优异的系统效率(PR)成为越来越多融资行和投资方决策项目可行性的先决条件,因此,有必要对光伏电站PR所关联的影响因素进行灵敏度分析。PVsyst是一款专业的光伏电站设计和仿真软件,用于指导光伏电站设计及发电量模拟计算。基于PVsyst软件,以沙特阿拉伯某座地面光伏电站为例,从光伏支架参数、光伏组件性能参数、电缆损耗、灰尘和污秽损失、不可利用率5个方面仿真分析了不同设计方案对光伏电站PR的影响,重点分析了不同影响因素对光伏电站PR的灵敏度,并有针对性的提出了可用于光伏电站设计的指导原则。研究结果表明:温度损耗系数、光伏组件功率偏差、光伏组件开路电压偏差和短路电流偏差、IAM测试方式、低压电缆损耗、灰尘和污秽损失,以及白天发电时间段停电这些因素对光伏电站PR的灵敏度均较高;光伏支架高度及其结构参数对光伏电站PR的灵敏度需要结合实际的项目边界条件进行分析。With the vigorous development and high competition of the global PV industry,excellent PR value has become a prerequisite for more and more financing banks and investors to make project feasibility decisions.Therefore,it is necessary to conduct sensitivity analysis on the influencing factors associated with PR of PV power station.PVsyst is a professional software for designing and simulating PV power stations,used to guide the design and simulation calculation the power generation capacity of PV power stations.This paper is based on PVsyst software and takes a ground PV power station in Saudi Arabia as an example.The impact of different design schemes on the PR of PV power stations is simulated and analyzed from five aspects:PV bracket parameters,PV module performance parameters,cable losses,dust and pollution losses,and unavailability rate.The sensitivity of different influencing factors on the PR of PV power stations is analyzed,and targeted guidance principles that can be used for PV power stations design are derived.The research results show that factors such as temperature loss coefficient,power deviation of PV modules,open circuit voltage deviation and short-circuit current deviation of PV modules,IAM testing method,low-voltage cable loss,dust and fouling loss,as well as power outages during daytime power generation,all have a high sensitivity on the PR of PV power stations.The sensitivity of the height and structural parameters of PV brackets on the PR of PV power stations needs to be analyzed in conjunction with actual project boundary conditions.

关 键 词：PVsyst软件 光伏电站 系统效率 灵敏度 独立发电商 指导原则 

分 类 号：TM615[电气工程—电力系统及自动化]