组串不同接线方式对光伏组件发电量的影响分析

ANALYSIS OF THE EFFECT OF DIFFERENT STRING WIRING METHOD ON THE POWER GENERATION OF PV MODULES

研究了单面和双面光伏组件的组串分别采用C字形和一字形接线方式时的发电特性。实证电站的结果表明:在为期1年的测试周期里,单面光伏组件组串采用C字形接线方式时每kW的全年发电量比采用一字形接线方式时的高0.12%;而双面光伏组件组串采用C字形接线方式时每kW的全年发电量比采用一字形接线方式时的高0.26%。利用PVsyst软件模拟组件发电量,并与实证数据进行比较,结果发现,模拟结果和实证数据的趋势一致。同时研究了组串不同接线方式时影响双面光伏组件发电量的3个主要因素。

The wiring method of each string in a PV power station mainly includes C-shaped wiring method and one-line-shaped wiring method.The power generation characteristics of single-sided and bifacial PV modules under different string wiring methods were studied.The results of the empirical power station showed that during the one-year test period,the annual power generation per kW of the single-sided PV modules using the C-shaped wiring method was 0.12%higher than that when the one-line-shaped wiring method was used.The bifacial PV modules adopts the C-shaped wiring method to generate 0.26%more power than the one-line-shaped wiring.The PVsyst software was used to simulate the power generation of the PV modules and compared with the empirical data.The results showed that the simulation results were consistent with the empirical data.At the same time,the three main factors that affect the power generation of bifacial PV modules when different string wiring methods are studied.