Workflow design and analysis of the function of a PLC ship power station management system
In order to improve the continuity and reliability of power supply, ships are often equipped with a number of generating units. With the change of working condition, there are several combinations of the unit operation modes. A single diesel generator can supply power to a whole ship, and two diesel generators may parallel to serve this purpose. Sometimes, a diesel generator may parallel with a shaft generator transiently for operating mode switching. All these can be used to perform control functions, such as starting and stopping, paralleling, load distribution, load transferring, and splitting. In general, these functions are implemented by controlling the speed and voltage of the generator.