System Design Of Diesel Generator Set

The diesel generator room is often located in the basement floor, where one or more diesel generator sets are set up. The generator sets adopt single or multiple parallel operation (types of parallel vehicles: self-synchronization, rough synchronization, and quasi-synchronization). Diesel generators are Whether to supply power to the equipment in the fire-fighting state or in the accident state, it is determined according to Party A’s use needs. If the power supply is separated, it is necessary to consider setting up separate outlet cabinets. In the power distribution system, the power supply of the primary and secondary loads is supplied by two mains at the same time. When one mains loses power, the other mains can pass through the end of the low-voltage bus coupler for self-input or hand-input power supply. When all kV independent high-voltage power supplies lose power, after the ATS switch is converted, the diesel generator is started, and the start signal is sent to the diesel generator room. The signal delays 0 to 10 s to automatically start the diesel generator set, and the diesel generator set reaches the rated speed within 15 seconds. After voltage and frequency, put it into operation with rated load. The generator set should be in the state of standing start, equipped with an automatic starting device to ensure that the building is always in the state of two power sources. When the mains power is restored for 30 to 60 s, the mains power supply will be automatically restored. The diesel generator set will automatically resume after the cooling delay. Shutdown, emergency conversion of diesel generator when two mains power is lost at the same time.

In the low-voltage power distribution system, it is necessary to set up an emergency bus section and a separate emergency bus room to ensure the reliability of the power supply. The emergency bus is powered by a diesel generator set to ensure the normal operation of important loads. The phase sequence of the diesel generator must be The phase sequence of the original power supply system is the same.