基于运行数据的光伏电站状态评估方法研究  

Research on photovoltaic power plant state evaluation based on operating data

作　　者：徐恒辉 姚杰 周萍 杜梦 于锦涛 朱昊天 XU Henghui;YAO Jie;ZHOU Ping;DU Meng;YU Jintao;ZHU Haotian(Guodian Environmental Protection Research Institute Co.,Ltd.,Nanjing 210031,China)

机构地区：[1]国电环境保护研究院有限公司,江苏南京210031

出　　处：《电力科技与环保》2023年第5期450-456,共7页Electric Power Technology and Environmental Protection

基　　金：国家能源集团科学技术研究院有限公司科技项目(HB2022Y01)。

摘　　要：在新能源体系战略与企业数字化转型的发展趋势下,光伏电站对于高效管理、优化产出、提升效率的需求愈发迫切。传统的光伏电站人工抽检评估模式存在效率低、覆盖面窄等弊端。本文提出基于运行数据分析的光伏电站状态评估模式,并以甘肃地区某光伏电站为应用案例,通过采集并分析各光伏子阵的电流、电压、功率等发电数据及辐照度、温度等环境数据,利用标准工况下的光功率修正模型计算各区域的光功率衰减程度,实现对电站运行状态的快速、全面分析和评估。研究结果表明,所评估电站经过11年的运行,其直流侧综合衰减幅度达到10.17%。参照工信部2021年《光伏制造行业规范条件》,该衰减幅度已高于常规8.5%的衰减水平;其中衰减幅度在8.5%~10%范围内的光伏子阵占比33.33%;衰减幅度超过10%的光伏子阵占比38.89%。该评估结果对于不同衰减程度的光伏区域利用逆变器编号予以定位,不仅实现了对光伏电站运行状态的全覆盖实时把控,也能够指导电站分区域运行维护工作的高效开展。研究成果对于光伏电站的少人化和高质量管理提供了有价值的借鉴和参考。Under the development trend of new energy system strategy and enterprise digital transformation,the demand for efficient management,optimization of output,and improvement of efficiency of photovoltaic power plants is becoming increasingly urgent.The traditional manual sampling evaluation model for photovoltaic power plants has drawbacks such as low efficiency and narrow coverage.This article proposes a state assessment model for photovoltaic power plants based on operational data analysis,and uses a photovoltaic power plant in Gansu Province as an application case.By collecting and analyzing the power generation data such as current,voltage,and power of each photovoltaic sub-array,as well as environmental data such as irradiance and temperature,the light power correction model under standard operating conditions is used to calculate the light power attenuation degree of each region,achieving rapid and comprehensive analysis and assessment of the plant's operating state.The research results show that after 11 years of operation,the comprehensive attenuation amplitude of the DC side of the evaluated power station has reached 10.17%.According to the 2021"Regulatory Conditions for the Photovoltaic Manufacturing Industry"issued by the Ministry of Industry and Information Technology,the attenuation level has exceeded the conventional attenuation level of 8.5%;Among them,the proportion of photovoltaic sub-arrays with attenuation amplitude ranging from 8.5%to 10%is 33.33%;The proportion of photovoltaic sub-arrays with attenuation amplitude exceeding 10%is 38.89%.The evaluation results allow for the positioning of photovoltaic areas with different degrees of attenuation using inverter numbers,which not only enables full coverage and real-time control of the operating status of photovoltaic power plants,but also guides the efficient implementation of regional operation and maintenance work for the power plants.The research results provide valuable references for the humanization and high-quality management of photovoltaic

关 键 词：光伏电站 逆变器 功率修正 标准工况 提升效率 数字化转型 环境数据 评估模式 

分 类 号：TM615[电气工程—电力系统及自动化]