摘要
以某研究院30 kW光伏工程为背景,以提高光伏组件输出效率为目的,仿真研究了光伏表面积灰对光伏组件输出性能的影响,提出了该光伏组件的清洁周期与清洁方法。通过分析光伏效应,在Matlab/Simulink平台上建立光伏电池模型,并据此建立光伏组件表面积灰影响光伏电池输出特性的模型。设置积灰浓度从0逐步增加到4 g/m2,仿真结果显示随着积灰浓度的增加,光伏输出功率受到明显的限制,单体最大功率点下降幅度分别为7.51%、13.27%、18.16%、22.24%。该30 kW光伏工程项目运行数据统计结果显示经清洁后光伏组件的输出效率有明显的提升,平均效率提高1.57%。考虑到光伏工程运行的组件安装形式、天气条件与安装地点等条件,确定该光伏工程的清洁周期,大大提高了能源利用率。
Taking the 30 kW photovoltaic engineering in certain laboratory as background, improving the efficiency of PV module output for the purpose, this paper uses simulation technology to research the impact ofphotovoltaic surface ash on the performance of PV module output and proposes the cleaning cycle of PV modules and cleaning methods. Through the analy- sis of the photovoltaic effect, this paper establishes the model of photovoltaic cells on Matlab/Simulink platform, with which this paper established the PV module surface area of the gray model, set fouling concentration increasing from 0 to gradually and the simulation results show that with the increase of dust concentra- tion, the PV output power subjected to obvious limitations, with the single largest power point decline of 7.51%, 13.27%, 18.16%, 22.24%. The 30kW photovoltaic projects running sta- tistical results after the cleaned output efficiency of PV modules have improved significantly, with an average efficiency of 1.57%. Taking into account the photovoltaic projects runping components installment, weather conditions and the installation site to determine the photovoltaic project cleaning cycle im- proves the utilization rate of energy.
出处
《电力学报》
2013年第5期397-399,共3页
Journal of Electric Power
关键词
新能源
光伏组件
积灰
清洁
new energy
photovoltaic module
ash deposition
clean
