In the power supply design of high-rise building, it is necessary to set up diesel generating set obviously. Under the circumstances, we should start with the loading level of the high-rise building:
Fire fighting pumps, smoke control facilities, fire elevators and emergency lighting in high-rise buildings, such as a class of high-rise buildings should be required to supply power at the first level, and two types of high-rise buildings should be powered by two level load requirements.
The first load shall be supplied by two power supplies. Two stage load, when conditions permit, should also be supplied by two circuits, especially belonging to the two stage load of fire fighting electricity, and the power supply should be supplied according to the two circuit requirements of the two stage load. Thus, the high power supply of high-rise building reliability requirements, require two power supply. Therefore, the principle of setting up diesel generating set is as follows:
For the power grid to provide two independent power supply of high-rise buildings, according to specifications, has met the requirements of the one or two level load, in principle, no diesel generator sets. However, it is important for the high-rise buildings (such as high-rise building), which contains the special important load, should be considered a fault or maintenance of power system, power system and other serious fault occurs, the general should set diesel generator for emergency power supply.
For the local power grid can only provide a power supply, or access to second power supply difficult or uneconomical and reasonable high-rise buildings, diesel generator sets should be provided to provide second power supply. At this point, diesel generators are used as backup power sources, not just for emergency use.
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