What are the uses of diesel generator sets?

　　Diesel generator sets are a type of power generation equipment. Their principle is to convert thermal energy into mechanical energy by burning diesel fuel in an engine, and then use the rotating engine to drive a generator to cut the magnetic field, ultimately generating electricity. Its uses are mainly in the following five aspects:

　　First, self-sufficient power supply. Some power-using units do not have grid power supply, such as islands far from the mainland, remote pastoral areas, rural areas, military camps, work stations, and radar stations in deserts and plateaus. They need to be equipped with self-sufficient power supplies. The so-called self-sufficient power supply is a self-generated and self-used power supply. When the power generation capacity is not very large, diesel generator sets often become the first choice for self-sufficient power supplies.

　　Second, backup power supply. The main purpose is that although some power-using units already have a relatively stable and reliable grid power supply, in order to prevent accidents, such as circuit failures or temporary power outages, they can still be configured for emergency power generation. Power-using units generally have high requirements for power supply security; even a second of power outage is not allowed. Emergency power generation must replace the grid power supply the moment it stops, otherwise it will cause great losses. These units include some traditional units with high power supply security requirements, such as hospitals, mines, power plant security power supplies, and factories using electric heating equipment; in recent years, network power supplies have become a new growth point for backup power supply demand, such as telecommunications operators, banks, airports, command centers, databases, highways, high-grade hotels and office buildings, and high-end catering and entertainment venues. Due to the use of network management, these units are increasingly becoming the main users of backup power supplies.

　　Third, alternative power supply. The role of the alternative power supply is to make up for the insufficient grid power supply. There may be two situations: one is that the grid electricity price is too high, and a diesel generator set is chosen as an alternative power supply from the perspective of cost savings; the other is that when the grid power supply is insufficient, the use of grid electricity is restricted, and the power supply department has to cut off power everywhere. At this time, in order to maintain normal production and work, power-using units need an alternative power supply to provide relief. Several market hot sales of diesel generator sets in China in recent years, such as the nationwide hot sales in the first half of the 1980s, the hot sales in South China in the early 1990s, and the hot sales in East China in 2003-2004, were all caused by national and regional power shortages. In order to cope with large-scale power outages, various power-using units purchased diesel generator sets as alternative power supplies.

　　Fourth, mobile power supply. A mobile power supply is a power generation facility that does not have a fixed location and is moved around. Due to its light, flexible, and easy-to-operate characteristics, diesel generator sets have become the first choice for mobile power supplies. Mobile power supplies are generally designed in the form of power vehicles, including self-propelled power vehicles and trailer power vehicles. Power-using units using mobile power supplies mostly have mobile work characteristics, such as oil fields, geological exploration, field engineering exploration and adventure, camping and picnicking, mobile command posts, trains, ships, and power car compartments (warehouses) of freight containers, as well as mobile weapon equipment power supplies for the military. Some mobile power supplies also have emergency power supply properties, such as emergency power supply vehicles for urban power supply departments, and engineering rescue vehicles and repair vehicles for water and gas supply departments.

　　Fifth, fire-fighting power supply. Fire-fighting generator sets are mainly power supplies equipped for building fire-fighting equipment. Once a fire occurs, the mains power is cut off, and the generator set becomes the power source for the fire-fighting equipment. With the widespread implementation of fire safety regulations, the domestic real estate fire-fighting power supply market will have huge potential for development.

　　It can be seen that the above four uses of diesel generator sets have emerged in response to different stages of social development. Among them, self-sufficient power supplies and alternative power supplies are power demands generated due to backward power supply infrastructure construction or insufficient power supply capacity, which are the key market demands in the early stages of socio-economic development; while backup power supplies and mobile power supplies are power demands generated due to improved power supply security requirements and the continuous expansion of power supply coverage, which are the key market demands in the advanced stages of socio-economic development. Therefore, if we examine the market uses of diesel generator sets from the perspective of social development, it can be said that their use as self-sufficient power supplies and alternative power supplies is a transitional use, while their use as backup power supplies and mobile power supplies is a long-term use. In particular, fire-fighting power supplies, as a market with huge potential demand, will gradually be released.

　　As power generation equipment, diesel generator sets have some unique advantages: ① Relatively small size, flexible and convenient, easy to move. ② Easy to operate and control. ③ Widely available energy sources (fuel). ④ Relatively low one-time investment. ⑤ Quick start, allowing for quick power supply and quick shutdown. ⑥ Stable power supply, power supply quality can be improved through technological improvements. ⑦ Direct point-to-point power supply to the load. ⑧ Less affected by various natural climates and geographical environments, capable of generating power around the clock.

　　Because of these advantages, diesel generator sets are considered the better form of backup and emergency power supplies. Currently, although there are many other means of solving backup and emergency power supply, such as UPS and dual-circuit power supply, they cannot replace the role of diesel generator sets. In addition to price factors, this is mainly because the reliability of diesel generator sets as backup and emergency power supplies is higher than that of UPS and dual-circuit power supply.

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The working principle of the generator set

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The working principle of the generator set

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