Solar photovoltaic power generation system is a new type of power generation system that converts light energy into usable electrical energy, and is becoming more and more important in the field of new energy power generation. At present, it is mainly divided into two types: independent power generation and grid-connected power generation. However, the installation location and environment of the solar photovoltaic power generation system are quite special, and its equipment is very vulnerable to the attack of lightning. Therefore, in order to reduce the hidden danger of lightning strikes in the solar photovoltaic power generation system and ensure the normal and safe operation of the system, comprehensive lightning protection measures must be taken for the system.

Photovoltaic solar surge protector is a device used for lightning protection of solar power generation. It protects against induced lightning and direct lightning strikes or other transient overvoltage surges. It is suitable for the requirements of DC surge protection in industrial fields such as photovoltaic power generation and wind power generation.

In the photovoltaic system equipment, due to the inductive or capacitive coupling voltage caused by the lightning strike and the switching operation of the upstream power system, the resulting surge may damage the photovoltaic modules and inverters and other devices, which will give the photovoltaic system The operation will cause serious consequences. The Solar surge protector is a DC power lightning protection module specially developed for this purpose. The maximum working voltage can reach 1200V.

Equipment that may need protection in a PV system includes:

1. Inverter, including interface with low-voltage AC system and interface with DC system: photovoltaic array;

2. The photovoltaic system has its own wiring;

3. A component installed between the inverter and the photovoltaic array; a device used to control and monitor the photovoltaic system.

Overvoltage will reduce or destroy the performance of the photovoltaic system or even lead to failure, so the photovoltaic system should be protected against voltage.

Assessing the necessity of overvoltage protection and choosing the appropriate protection method requires the manufacturer to provide information on the withstand voltage of the equipment. If this information is not readily available, the provided withstand voltage rating Uw of the equipment can be used as a reference. Diverted lightning currents can cause accidental flashovers that can lead to fires, and effective solar surge protection can help reduce the risk of fires. Therefore, it is a very necessary option to equip the solar power system with a solar surge protector.