At present, photovoltaic power plants use silicon-based solar cell modules, which are very sensitive to temperature. With the accumulation of dust on the surface of the module, the thermal resistance of the photovoltaic module is increased, which becomes the thermal insulation layer on the photovoltaic module, affecting its heat dissipation. After the component is blocked, it will induce the bypass protection element in the junction box behind it to start, and the direct current of up to 9A in the component string will be instantaneously loaded onto the bypass device, and the junction box will produce more than 100 degrees of high temperature, which has little impact on the panel and the junction box in the short term, but if the shadow effect is not eliminated and it exists for a long time, It will seriously affect the service life of the junction box and panel. In industry news reports, the junction box is often burned, and the shelter is one of the culprits.
