Why Can Diesel Generator Sets Be Widely Used

Sep. 24, 2021

Diesel generator sets are power generation equipment powered by diesel engines. In recent years, the market share of diesel generator sets has increased. They are widely used in communications, mining, construction, forestry, farmland irrigation, field construction and national defense projects, etc. In various fields, diesel generator sets have the following advantages compared with commonly used power generation equipment such as steam turbine generator sets, water turbine generator sets, gas turbine generator sets, and atomic power generator sets:

 

1. There are many levels of stand-alone capacity.

 

The single-unit capacity of diesel generator sets is several to tens of thousands of kilowatts. At present, the largest single-unit capacity of domestically-made units is several kilowatts. It is used as a stand-alone capacity of emergency generator sets and backup generator sets for post and telecommunications, high-rise buildings, industrial and mining enterprises, and military facilities. It has a wide range of selectable capacities and has the advantage of being suitable for power loads of various capacities.

 

2. The supporting equipment has a compact structure and flexible installation location.

 

The supporting equipment of the diesel generator set is relatively simple, with less auxiliary equipment, small in size and light in weight. Compared with the need to build dams for water turbines, which need to be equipped with boilers, fuel storage and water treatment systems, diesel generators have a small footprint, fast construction speed, and low investment costs.Commonly used generator sets mostly adopt independent configuration, while standby generator sets or emergency generator sets are generally used in conjunction with substation and distribution equipment. Since the unit generally does not operate in parallel with the city grid, the unit does not require sufficient water source [the cooling water consumption of the diesel engine is 34~82L/(kW.h), which is only 1/10 of that of the steam turbine generator unit], and it occupies an area The area is small, so the installation location of the unit is more flexible.


Why Can Diesel Generator Sets Be Widely Used

 

3. High thermal efficiency and low fuel consumption.

 

The effective thermal efficiency of diesel engine is 30%~46%, the thermal efficiency of high-pressure steam turbine is about 20%~40%, and the thermal efficiency of gas turbine is about 20%~30%. It can be seen that the effective thermal efficiency of the diesel engine is relatively high, so its fuel consumption is low.

 

4. Start quickly and reach full power quickly.

 

The start of a diesel engine generally only takes a few seconds, and it can be brought to full load within 1 min in an emergency state; it can be brought to full load in about 5 to 30 minutes under normal working conditions, while steam power plants generally need to be brought to full load from starting to full load. 3~4h.The shutdown process of the diesel engine is also very short, and it can be started and stopped frequently. Therefore, diesel generator sets are very suitable as emergency generator sets or backup generator sets.

 

5. Simple maintenance and operation, fewer operators are required, and easy maintenance during the standby period.

 

6. The overall cost of construction and power generation of diesel generator sets is the lowest.

 

The diesel engine in the diesel generator set is generally a four-stroke, water-cooled, high-speed internal engine, which burns non-renewable diesel, and the emissions of NO2, CO, HC, PM after combustion pollute the environment, and the exhaust noise is relatively large.Nevertheless, diesel generator sets have obvious advantages compared with hydropower, wind, solar and other renewable energy power generation as well as nuclear power and thermal power generation. That is, the construction of diesel generator sets and the comprehensive cost of generators are relatively low.

 

Diesel generator sets are technology-intensive products, which involve technologies in multiple disciplines such as diesel engines, motors, and automatic control. In summary, we know that diesel generator sets have the characteristics of compact structure, small footprint, high thermal efficiency, rapid starting, flexible control and convenient fuel storage. If you also want to purchase diesel generator sets, please contact Dingbo Power via email dingbo@dieselgeneratortech.com.


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