Selection Methods of Capacity and Number of Common Generator Sets

Some generator sets need to be continuously operated for a certain period of time or often for a long time as a common power supply for electrical loads. Such generator sets are called common generator sets. The common generator set can be used as the common generator set and the standby generator set. Towns, islands, forest farms, mines, oil fields and other areas or industrial and mining enterprises that are far away from the large power grid need to install generator sets in order to supply local residents with electricity for production and living.

Important facilities such as national defense projects, communication hubs, radio stations, and microwave relay stations should be equipped with backup generator sets. This type of facility can be supplied by the mains power grid when it is used. However, due to earthquakes, typhoons, wars and other natural disasters or man-made factors, after the city power grid is damaged and the power is cut off, the standby units that have been set up should start up quickly and continue to operate uninterruptedly for a long time to ensure the power consumption of these important projects. The continuous power supply of the load, this standby generator set is also a common type of generator set. Commonly used generator sets continue to work for a long time, and the load curve changes greatly. The selection of unit capacity, number and type and the control method of units are different from those of emergency units.

1. Determination of the capacity of common generator sets

According to the long-term continuous operation of the unit, the output power can meet the maximum calculation load of the whole project, and the standby unit capacity of the generator set should be determined according to the importance of the load. The continuous output power of the diesel engine is generally 0.9 times the rated power.

2. Determination of the number of common generator sets

The number of commonly used generator sets is usually set to more than 2 to ensure the continuity of power supply and adapt to changes in the power load curve. Only when the number of generator sets is large can the number of generator sets to be put into operation can be determined according to the change of electricity load, so that the diesel engine often runs under the economic load, so as to reduce the fuel consumption rate and the cost of power generation. The best economical operating state of the diesel engine is between 75%-90% of the rated power.

In order to ensure the continuity of power supply, the common unit itself should consider setting up a spare unit, so that the generator unit can still meet the uninterrupted and continuous power supply to the important power load when the unit is faulty repaired or stopped for inspection.

Dingbo Power was founded in 2006 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.