Electrical calculation of solar power plants
This section involves calculating the optimal number of photovoltaic modules (PVM), their spatial arrangement, and connection schemes to inverter equipment to ensure maximum efficiency of the solar power plant (SPP).
Main stages and principles of calculation:
Determining the power of the array (DC): Calculation of the total number of panels based on the design power of the station and the specifications of the selected PVM (STC).
String configuration: Distribution of panels into series circuits (strings) considering the operating voltage range of the inverter's MPPT trackers. The calculation is performed with mandatory consideration of temperature coefficients: peak open-circuit voltage at minimum winter temperatures and voltage drop during summer heating of the PVM.
Spatial orientation: Determining the optimal tilt angle of the panels and azimuth to maximize annual generation considering local insolation (according to PVGIS data).
Minimizing losses: Calculation of the cross-section of direct current (DC) cable lines to limit linear power losses within the limits of
Main stages and principles of calculation:
Determining the power of the array (DC): Calculation of the total number of panels based on the design power of the station and the specifications of the selected PVM (STC).
String configuration: Distribution of panels into series circuits (strings) considering the operating voltage range of the inverter's MPPT trackers. The calculation is performed with mandatory consideration of temperature coefficients: peak open-circuit voltage at minimum winter temperatures and voltage drop during summer heating of the PVM.
Spatial orientation: Determining the optimal tilt angle of the panels and azimuth to maximize annual generation considering local insolation (according to PVGIS data).
Minimizing losses: Calculation of the cross-section of direct current (DC) cable lines to limit linear power losses within the limits of
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