太阳能光伏发电与并网技术的应用解析

Analysis of the Application of Solar Photovoltaic Power Generation and Grid-connected Technology

在全面贯彻国家碳达峰、碳中和目标达成的背景下,全面推进新型清洁能源广泛应用,成为完成绿色低碳转型的新方向,太阳能光伏发电系统的应用比例也因此大幅度提升。但是由于并网技术未能得到全面提高,以至于出现了电压波动、谐波干扰、孤岛效应等影响光伏发电并网效果的问题。文章结合当前光伏发电项目建设案例和发展趋势,对光伏发电并网技术类型进行分析,同时从储能系统组成结构、主设备选型、升压系统、保护措施与防雷接地等方面探讨了并网技术的应用方案,旨在提高光伏电池组效率,改善逆变器的转换效率,增强入网传输效率,提高光伏并网的应用可靠性与安全性。

Under the underground of the achievement of the goal of the comprehensive national carbon dioxide peaking and carbon neutrality,comprehensively promoting the wide application of new clean energy has become a new direction to complete the green and low-carbon transformation,and the application proportion of solar photovoltaic power generation systems has also been greatly increased.However,because the grid-connected technology has not been comprehensively improved,there are some problems affecting the grid-connected effect of photovoltaic power generation,such as the voltage fluctuation,harmonic interference and islanding effect.Combined with the current construction cases and development trends of photovoltaic power generation projects,this paper analyzes the types of grid-connected technologies of photovoltaic power generation,and discusses the application scheme of grid-connected technology from the aspects of structure of energy storage systems,main equipment selection,boost systems,protection measures and lightning protection grounding,aiming to improve the efficiency of photovoltaic cell packs,improve the conversion efficiency of inverters,enhance the transmission efficiency in the network,and improve the reliability and security of photovoltaic grid-connected applications.