李志浩

• 1:山西机电职业技术学院材料工程系

摘要(Abstract)：

本文利用PVsyst软件并结合Meteonorm 7.1气象数据库提供的气象数据对位于长治地区的某5 kW_p并网光伏发电系统在2019年的运行情况进行了统计分析。结果显示:6-9月,PVsyst软件模拟得到的光伏发电系统发电量与实际发电量的差别较大,模拟得到的月均发电量平均值比实际的月均发电量平均值高43.0%;而利用当地每日实测的太阳辐射数据,经过换算后再输入PVsyst软件进行模拟,得到的月均发电量和能效比(PR)值(67.1%)均与实际的月均发电量和PR值(56.5%)较为接近,因此,利用PVsyst软件进行光伏发电系统性能模拟时,根据逆变器工作时段动态调整太阳辐射量的计算,并将换算后的太阳辐射量输入软件能实现更精确的模拟。针对估算得到的该光伏发电系统归一化日发电量与世界其他地区的数值相比处于较低水平的情况,通过分析后发现是光伏发电系统故障导致了其发电量偏低。因此,在光伏发电系统投入运行前,应成立专业化的第三方工程验收团队对光伏发电系统进行全面检查和验收,为系统的正常运行提供必要保障。

关键词(KeyWords)： 光伏发电系统;发电量;能效比;可靠性;PVsyst软件;故障原因

Abstract:

Keywords:

基金项目(Foundation): 校级基金项目——光伏电站故障诊断的判定方法研究(KJC-21B03)

作者(Author): 李志浩

DOI: 10.19911/j.1003-0417.tyn20200908.03

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