Diesel generator set is a kind of energy conversion equipment, which converts chemical energy into heat energy, then into mechanical energy, and finally into required electrical energy. Fuel oil is its raw material, and electrical energy is its product. The diesel generator set is divided into standby power supply, self-contained power supply and emergency power supply in terms of use mode.

The standby power supply is also called emergency power supply. The main purpose is that some units have a stable power supply, but in order to prevent accidents, such as circuit failure or temporary power failure due to force majeure, they still configure their own power supply for emergency power generation. Users include: telecommunications industry, bank airport, command center, data center, expressway, high-grade hotel office building, hospital, etc.

Self provided power supply: some power users do not have network power supply, such as military camps, workstations, radar stations, etc. on islands, remote villages, pastoral areas, desert plateau. Under the condition that the electric power is not too large, the diesel generator set becomes the first choice of self-contained power supply.

Emergency power supply: Mobile power supply is a power generation facility that has no fixed place of use and is transferred everywhere. Diesel generator set has become the first choice of mobile power supply due to its portability, flexibility, easy operation and other characteristics. There are self powered vehicles, trailers, trailers, etc. Most of the users have the nature of mobile work, such as communication emergency, oil field, geological exploration, field operations, engineering rescue, etc.