2024-12-17
Power generation (kWh)= total installed capacity of solar modules (kW)x solar irradiation intensity (kWh/m squared)x power generation efficiency of photovoltaic system
Payback period (years)= total cost of photovoltaic system one year of electricity savings
Total installed capacity (kW)= installed capacity of a single solar module (kW)x number of solar modules
Electricity cost saved per year (Yuan)= annual average power generation per day (kWh)x Electricity price (yuan /kWh)x power generation days (days)
In addition, due to the large installed capacity of centralized grid-connected photovoltaic power stations, land occupation must be sufficiently large, and land sites are usually relatively remote due to the nature of the land.
Generally, the occupation of land, water, etc. is occupied, and the new land mode ground-type site selection constantly expands.
The site selection of the ground station is concentrated in mountains, beaches, swamps, Gobi, deserts, contaminated land, and other idle or abandoned land. Once the relevant procedures are completed, the construction is sustainable and enjoys the national benchmark electricity price subsidy, so the income is stable.
In the design of distributed photovoltaic power station, there are many factors influencing comprehensively in the inclination design of the photovoltaic array, and because the distributed photovoltaic power plants need to combine different architectural design forms, most distributed photovoltaic power plants cannot be designed according to the optimal tilt angle. The main factors for consideration in the inclination design of distributed photovoltaic array include:
The ratio of module capacity to inverter capacity of photovoltaic power station.
(Capacity ratio = installed capacity of photovoltaic system/rated capacity of photovoltaic system), increasing the appropriate capacity ratio in a certain range can improve the utilization rate of other equipment, dilute the investment cost, reduce the construction and power generation cost, and also make the output smoother and improve the friendliness of the grid.
It means the point at which the failure of the grid or disturbance created due to the photovoltaic power station junction voltage fluctuation, the photovoltaic power station can be connected to the grid without interruptions in operation within the enclosure.
Installed capacity
After packaging and protection in series, solar cells can form a large area of solar cell modules.
Together with the power controller and other components to form a photovoltaic power generation device, the generating power of this device
It is the installed capacity
Photovoltaic, photovoltaic effect
It is called the photovoltaic effect. The absorption of photons by an object causes electromotive force. When an object is exposed to light, the charge distribution inside the object changes and produces an effect of electromotive force and current
Photovoltaic power generation
Photovoltaic power generation technology, which converts solar energy directly into electric energy by using the photovoltaic effect.
Unit
Watt (W), kilowatt (KW), megawatt (MW), giga watt (GW), terawatt (TW)
Calculation formula
1TW=1000GW=1000000MW=1000000000KW=1000000000000W
1MW=1000KW
A unit of energy for electricity
Kilowatt-hour (KWh) A kilowatt-hour of electricity is one kilowatt-hour of electricity.
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