With the increasing global attention to renewable energy, photovoltaic power generation as a clean and efficient form of energy is gradually gaining popularity. However, how to accurately calculate the power generation of a photovoltaic power plant is the key to determining its return on investment and environmental benefits.
The calculation of the power generation of photovoltaic power stations mainly depends on the national standard formula. According to the Code for the Design of Photovoltaic Power Stations GB50797-2012 Article 66.With 2 formulas, we can get: ep=ha paz es k. Among them, EP represents power generation (kWh), HA is the total solar irradiance in the horizontal plane (kWh m2), PAZ is the installed capacity (KWP), ES is the irradiance (constant) under standard conditions, and K is the comprehensive efficiency coefficient.
The application of this formula requires us to grasp some key data. First of all, the total solar irradiance in the horizontal plane can be obtained through meteorological data or special solar radiation measurement equipment. Secondly, the installed capacity PAZ refers to the power of the photovoltaic power station, which is determined according to the design and equipment selection of the power station. Finally, the comprehensive efficiency coefficient k is affected by various factors such as inverter efficiency, collector line loss coefficient, surface pollution coefficient of photovoltaic modules, correction coefficient, etc., which needs to be calculated and adjusted according to the actual situation.
With the best inclination angle of 17° in Shenzhen, the installed capacity is 28The 8kw photovoltaic power station, for example, is calculated to have an annual power generation of 3145mwh。This value is based on a comprehensive consideration of the calculation of the amount of solar radiation in the area and the parameters of the plant equipment.
Overall, the calculation of the power generation of a photovoltaic power plant is a complex but necessary process. It requires a combination of factors, including the amount of solar radiation, equipment parameters, environmental conditions, etc. Only through accurate calculations can we have a clear picture of the operation and return on investment of photovoltaic power plants, so as to provide strong support for the development of renewable energy.
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