In a solar power system, photovoltaic panels absorb sunlight and generate direct current through the photovoltaic effect. If the solar power system does not ensure quality and safety, it not only reduces the efficiency and life of the system, but also causes the risks of short-circuit, electric fire, serious loss of health and energy. In addition, photovoltaic panels made of damaged cells will have low efficiency and quickly degrade in performance, adversely affecting system performance.