武汉并网光伏电站性能与气象因子关系研究  

RELATIONSHIP BETWEEN PERFORMANCES OF GRID-CONNECTED PV POWER PLANT AND METEOROLOGICAL FACTORS IN WUHAN

作　　者：李芬 陈正洪 成驰 蔡涛[3] 杨宏青 申彦波[4] 

机构地区：[1]湖北省气象服务中心,武汉430074 [2]湖北省气象能源技术开发中心,武汉430074 [3]华中科技大学电气与电子工程学院,武汉430074 [4]中国气象局公共气象服务中心,北京100081

出　　处：《太阳能学报》2012年第8期1386-1391,共6页Acta Energiae Solaris Sinica

基　　金：财政部2010年度公益性行业(气象)科研专项(GYHY201006036);华中区域气象中心科技发展基金重点项目(QY-Z-201010);湖北省气象局科技发展基金青年项目(2012Q06)

摘　　要：利用华中科技大学并网光伏电站1a(2010年1～12月份)每5min电量资料和同期武汉站气象资料,统计了并网光伏电站的光伏阵列转换效率、逆变器效率基本特征及其与气象因子的关系,并采用指数曲线对逆变器效率进行模型模拟,评估其拟合精度和应用价值。最后,从能量平均角度,对表征光伏电站性能的综合效率进行分析,为武汉市光伏发电潜能(年发电量)估算和经济效益分析提供参考。结果表明:①斜面逐时辐照量较低时,阵列转换损失较大;随着斜面逐时辐照量的增加,阵列转换效率呈先增加后下降的趋势,主要是由于温度的作用(高温负影响);②推算出光伏并网逆变器效率接近稳定时,对应的输入斜面逐时辐照量临界值范围(或有效辐照量范围)为0.469～0.587kWh·m-2;③武汉市40°倾角安装的并网光伏电站年综合效率为0.56,每瓦光伏装机容量的年发电量约为0.64kWh。Power data per 5 min for whole year （Jan. to Dec. of 2010） from roof grid-connected photovoltaic power station in Huazhong University of Science and Technology and meteorological data per hour over the same period were collected. The basic parameters, such as conversion efficiency of PV array, inverter efficiency etc. were analyzed. From the energy-averaged point, the performance ratio was paid attention for calculating the potential of PV power in Wuhan. The results showed that （ 1 ） PV array efficiency increases firstly with the increase of solar radiation in plane of PV array, then PV array efficiency decreases when the radiation reaches certain level, due to the high temperature; （2）The inverter efficiency close to the stabile is quantitatively calculated, corresponding critical solar radiation in the plane of PV array from 0. 469 to 0. 587kWh.m^-2 ; （3）The performance ratio of the PV power station with 40°tihed-plane installation and the yearly power generation per 1Wp in Wuhan are 0.56 and 0.64kWh, respectively.

关 键 词：并网光伏电站 太阳能辐射 光伏阵列转换效率 逆变器效率 综合效率 

分 类 号：TM615[电气工程—电力系统及自动化]