1. Will house shadows, leaves and even bird droppings on pv modules affect the power generation system?
A: the blocked PV cells will be consumed as load. The energy generated by other non blocked cells will generate heat at this time, which is easy to form hot spot effect. So as to reduce the power generation of PV system, and even burn PV modules in serious cases.
2. Will the power be insufficient when it is cold in winter?
A: the factors that directly affect the power generation are the irradiation intensity, sunshine duration and the working temperature of PV modules. In winter, the irradiation intensity will be weak and the sunshine duration will be shortened. Therefore, the power generation will be reduced compared with that in summer. However, the distributed PV power generation system will be connected to the power grid. As long as the power grid has power, the household load will not have power shortage and power failure.
3. Why can PV power generation be used preferentially?
A: PV power generation is a kind of power supply, which can output electric energy, and can only output electric energy. Power grid is a special power supply, which can not only provide electric energy to the load, but also receive electric energy as a load. According to the principle that the current flows from the place with high voltage to the place with low voltage, when PV power generation, from the perspective of load, The voltage of the grid connected inverter is always a little higher than that of the power grid, so the load gives priority to PV power generation. Only when the PV power is less than the load power, the voltage of the parallel node will drop, and the power grid will supply power to the load.
Post time: May-25-2023