How to calculate photovoltaic power generation?
Method 1: Calculation method of national standard formula.
According to the Code for the Design of Photovoltaic Power Stations GB50797-2012 Article 66.2 formulas, power generation (ep) = total solar irradiance in the horizontal plane (ha) installed capacity (paz) irradiance under standard conditions (es) comprehensive efficiency coefficient (k).
Method 2: Irradiation Calculation Method
ep = ha × s × k1 × k2。Among them, HA is the total solar irradiation of the inclined plane, S is the module area, K1 is the module conversion efficiency, and K2 is the comprehensive efficiency of the system. This method is suitable for inclination installation projects, the irradiance of the inclined surface needs to be obtained or converted according to the horizontal irradiance, and the overall efficiency of the system needs to consider a variety of losses, generally between 75% and 85%.
Method 3: Sunshine hours estimation method
ep = h × p × k。Among them, p is the installed capacity of the system, h is the local peak sunshine hours, and k is the overall efficiency of the system (the value is 75%-85%, and 80% can be taken). This method is simple and convenient, and can calculate the average daily energy generation, which is often used for estimating the power generation of projects in the early stage.
Method 4: PVSYST simulation calculations
PVSYST is a photovoltaic system design software that simulates the performance of photovoltaic systems under different conditions and calculates the power generation according to the project requirements.
Method 5: Swellsun software simulation calculation
Through the Sunshine simulation software, the simulation calculation of photovoltaic power generation can be carried out.
How to increase the power generation of photovoltaic power generation?
1.Adjust the tilt angle of the PV modules to maximize direct sunlight and achieve the optimal angle of power generation.
2.Choose solar modules with high efficiency of photoelectric conversion and avoid using low-cost and low-quality photovoltaic panels.
3.Choose an inverter with a moderate voltage range that meets the requirements of the grid, and install a rain and sun shelter.
4.Standardized system configuration based on multiple trials and data comparisons.
5.Regularly inspect and maintain the PV power plant, clean the modules and overhaul them.