集中式光伏发电站设备选型要点

Key points to equipment selection for a centralized photovoltaic power station

面对目前的光伏项目“竞价(平价)上网”政策,光伏项目必须进行降本增效,这对设备选型提出了更高的要求。对西北地区某光伏发电站展开设计研究,结合行业发展中涌现出的新技术,探讨、总结了就地升压变压器、逆变器、电缆等设备的选型要点,并对不同设备组合方案进行技术经济比选。经过分析,特别是通过对比工程造价,比选出适合大型集中式光伏发电站的设备选型方案,该方案力争选型合理、成本低、运行可靠。通过降低光伏发电站的工程造价降低上网电价,可进一步增大中国光伏产业的竞争力。

Under the current"bidding to grid"policy for photovoltaic(PV)projects,projects must reduce their costs and increase their efficiencies,which makes higher requirements on equipment selection.Considering the design for a photovoltaic power station in Northwest China and emerging technologies in the industry,key points to the type selection of in-situ step-up transformers,inverters,cables and other equipment were discussed,and integration plans with different equipment were proposed.Through technical and economic comparisons,especially considering the project cost,a suitable equipment selection solution for large-scale centralized PV power stations was selected.The reasonable solution is of lower cost and reliable operation.Lower construction cost of PV power stations lead to a cheaper on-grid electricity price,which improves the competitiveness of PV industry of China.