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基于数据挖掘技术的沈阳地区分布式光伏实际发电效率研究

2021-02-28王明睿王明馨任佳星

现代信息科技 2021年16期

王明睿 王明馨 任佳星

摘  要:文章通过对沈阳地区已并网运行的不同装机容量分布式光伏发电数据进行数据分析,得出该地区分布式光伏发电单位装机容量在一个年度中各月份,以及重点月份中每天,与各时段的实际发电效率变化规律和特点。进而分析出该地区分布式光伏发电项目单位装机容量的实际最大发电效率。文章研究结果可为光伏发电技术经济分析及商业化运营决策提供依据,对促进碳中和背景下分布式光伏产业发展提供参考价值。

关键词:分布式;光伏;发电效率研究

中图分类号:TM615;TP311.13              文献标识码:A文章编号:2096-4706(2021)16-0049-07

Research on Actual Efficiency of Distributed Photovoltaic Power Generation in Shenyang Based on Data Mining Technology

WANG Mingrui1, WANG Mingxin2, REN Jiaxing3

(1.College of Science, Northeast Electric Power University, Jilin  132012, China; 2.Water Conservancy College, Shenyang Agricultural University, Shenyang  110866, China; 3.College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang  110866, China)

Abstract: By analyzing the data of  grid-connected distributed photovoltaic power generation with different installed capacity in Shenyang, this paper obtains the change rules and characteristics of the actual power generation efficiency of unit installed capacity of distributed photovoltaic power generation in the area in each month of the year and each day in key months and each period.. The actual maximum power generation efficiency per unit installed capacity of distributed photovoltaic power generation projects in this region is analyzed. The research results of this paper can provide a basis for technical and economic analysis and commercial operation decision-making of photovoltaic power generation, and provide reference value for promoting the development of distributed photovoltaic industry under the background of carbon neutralization.

Keywords: distributed; photovoltaic; research on power generation efficiency

0  引  言

分布式光伏發电通常是指在用户场地附近建设,运行方式以用户侧自发自用为主,多余电量上网,并以配电系统平衡调节为特征的光伏发电设施,其具有因地制宜、清洁高效、分散布局、就近利用的特点。其利用半导体界面的光生伏特效应,将光能直接转变为电能的一种技术。这种技术的关键元件是太阳能电池,光纤照射在太阳能电池上被界面层吸收,界面层吸收的光能越多,在太阳能电池中形成的电流就越大。影响光伏发电量的因素包含太阳辐射量、电池组的倾斜角度、电池组件转化效率、组合损失、灰尘遮挡、温度特性、线路变压器损失、逆变器效率、阴影积雪遮挡等多种因素,这些因素在光伏发电站建设安装和运行维护过程中已经得到了广泛关注。本文将从沈阳地区已经投入使用的分布式光伏发电站的运行情况入手,通过分析其2020年实际发电数据,对沈阳地区分布式光伏发电站的实际发电情况进行分析。……

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