关键词: 光伏发电系统, 石油化工企业, 光伏组件, 安装面积, 可利用面积, 发电量, 减碳排放量, 接网设计

Abstract:

The application case of a new substation project of a petrochemical enterprise was introduced, and the key issues such as the installation area of photovoltaic modules, the calculation of photovoltaic power generation and carbon emission reduction, and the design of grid connection were studied, and the payback period of investment costs was analyzed. Firstly, the effective installation area of rooftop photovoltaic modules was analyzed to determine the available area of photovoltaic module installation; Secondly, considering the front PV panels to shade the rear row for PV module arrangement, and determining the number of PV modules installed; Then, the calculation of photovoltaic power generation and carbon emission reduction was carried out; Finally, according to the total installed capacity of the photovoltaic power station, the grid connection voltage level was determined and the grid connection design was carried out. The power generation capacity of the photovoltaic power generation system in the first year is about 10 857 kW·h, and the carbon emission reduction in the first year is 8.48 kg/(m²·a)(measured in terms of CO₂). According to the average commercial electricity price of 0.8 yuan/(kW·h), taking into account factors such as operation, maintenance, equipment loss and other factors, the cost recovery will be achieved in about 6.5 years.

Key words: photovoltaic power generation system, petrochemical enterprise, photovoltaic module, installation area, usable area, power generation, carbon reduction, grid connection design