The AC power lightning protection module is suitable for power protection in distribution rooms, distribution cabinets, switchgear, AC/DC distribution panels, communication, electronics, power, networks, energy, railways, highways, and other systems; There are outdoor input distribution boxes and building floor distribution boxes inside the building; Used for low-voltage (220/380VAC) industrial and civilian power grids· Signal lightning arrester is used for overvoltage protection of line intrusion; Lightning rods are used for direct lightning protection; In the power system, it is mainly used for the input or output terminals of three-phase power supply in the power supply panel of the automation room and substation main control room. The generation of lightning begins with the generation of thunderstorms, and in fact, there are several clouds related to lightning, such as stratiform cumulus clouds, cumulus clouds, cumulonimbus clouds, and most importantly, cumulonimbus clouds, also known as thunderstorms. Thunder clouds are huge, opaque, and charged black clouds composed of water droplets, ice crystals, and gas dust above the atmosphere. The fundamental reason for their formation is the airflow movement of water vapor. With the continuous development and accumulation of thunderstorms, lightning and thunder phenomena will be caused, which is called thunderstorms. There are two main types of thunderstorms: frontal thunderstorms and thermal thunderstorms. Frontal thunderstorms are caused by the fact that when two air masses flow on the surface meet, the cold air mass flows below the hot air mass due to its high density, forming relative motion at the interface between the two and suddenly lifting the hot air mass up. The hot air flow forms a strong upward column and vortex, which will form cumulus clouds. At this point, if the temperature of the hot air mass is high enough and there is enough water, a huge thunderstorm cloud can be formed. Hot thunderstorms occur in mountainous areas. Due to sunlight, the temperature of the hills and their surfaces increases, and hot air flows into the sky due to low density. The temperature of nearby trees, lakes, and rivers is lower, and the relatively cold airflow around them concentrates in areas with higher temperature and lower density of the hills. At the same time, these airflow is heated by the high temperature on the surface of the hills and flows into the sky, forming a thermal thunderstorm