Under normal operating conditions, the main generators supply electrical power through distribution buses to the main step-up transformers and the unit stationservicetransformer;
正常运行时，发电机发出电能至配电母线，然后通过主变压器和厂用变；
2
The onsite electric power system consists of the main generator, the unit station transformers, the common stationservicetransformer, the diesel generators and the electric distribution system.
厂内配电系统由主发电机，主变压器，厂用变压器，柴油发电机和相关的配电设备组成。
3
Stationservice electrical system and generator-transformer block is of importance to the operation of power system.