户用光伏系统发电量与系统综合效率分析  

Analysis of Power Generation and System Efficiency of Household Photovoltaic System

作　　者：陈涛 陈世杰 刘永生[1] CHEN Tao;CHEN Shi-jie;LIU Yong-sheng(Solar Institute of Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力学院太阳能研究所,上海200090

出　　处：《新能源进展》2019年第2期149-154,共6页Advances in New and Renewable Energy

基　　金：扬中高新区研究生双创实践基地专项资金项目(YZGXJS2018-KYCX-006)

摘　　要：为了解户用光伏系统发电量和系统各效率衰减情况,持续跟踪、记录容量为6 kW的户用光伏系统近几年的发电量相关数据。通过理论计算和电站记录的各项数据分析发现:上海地区2015～2017年发电量逐年增加;在这三年中,组件方阵每年衰减率在4.5%～6.5%之间,系统综合效率总的相对衰减不超过4%;晴天各时段方阵转换效率与系统综合效率变化趋势相同;雨天各时段逆变器效率、方阵转换效率、系统综合效率变化趋势几乎相同。To study the attenuation of power generation and system efficiency of the household photovoltaic (PV) system, a household PV system with capacity of 6 kW was designed and installed. The data of generating capacity in 2015, 2016 and 2017 was continuously tracked and recorded. Data analysis and theoretical calculation results showed that: during this 3 years, the power generation in Shanghai increased year by year;the annual attenuation rate of the square matrix was between 4.5% and 6.5%, and the overall relative attenuation of the PV system was less than 4%;the trend of the component matrix conversion efficiency was the same as the system comprehensive efficiency in different periods of sunny days;on rainy days, the trend of dc-to-ac converter efficiency, matrix conversion efficiency and system synthesis efficiency were the same.

关 键 词：户用光伏系统 发电量 方阵效率 系统效率 衰减 

分 类 号：TK51[动力工程及工程热物理—热能工程] TM615[电气工程—电力系统及自动化]