Solar photovoltaic power generation needs to consider various factors comprehensively. Once the accurate data is mastered, the installation mode, minimum power and specifications of the panel can be determined (the effective power generation of solar panels must be too much for the load) and the battery. Capacity, performance and control. Make the product the best price/performance ratio. If the estimation of relevant factors is wrong, it will directly affect the performance and cost of the independent photovoltaic power generation system.
(1) The geographical location of the site.
Including: location, dimension, longitude, altitude, etc。
(2) Meteorological conditions at the installation site.
Including: monthly total solar radiation, direct radiation (or percentage of sunshine), annual average temperature, longest continuous rainy days, maximum wind speed and special meteorological conditions such as hail and snowfall.
(3) Maximum load
Including: the daily working hours of the load and the average power consumption, the time required for continuous cloud and rain.
(4) Load power characteristics
Since the current output by the solar array is DC, if the load is AC, it needs to be converted by the inverter to work normally, so that the energy loss of the final supply of the solar energy increases, and the required solar cell increases. This has led to an increase in the cost of solar power systems.
(5) AC load requirements for power supply
In addition to the need for larger solar panels, the AC load requirements for the inverter will vary from load to load. Generally speaking, a purely resistive load such as a heating wire is not required for the inverter, and an ordinary modified wave inverter can be used. TV and electric motors have relatively high requirements on power supply. The required inverter power and output characteristics are high. A high-power sine wave inverter is required to ensure that the load can work normally without interference. The load requirements are different and the cost is different.
(6) Use restrictions
Due to certain countries and regions, certain environmental requirements for batteries, especially nickel-cadmium batteries, have been severely restricted in Europe and the United States, and lead-acid batteries will also receive restrictions on transportation. These factors will lead to solar photovoltaic products. The cost is increasing.