| Abstract |
In this thesis, one new-installed off-island diesel engine generator units was studied. The functions of the Supervisory Control and Data Acquisition (SCADA) System are first highlighted, and carried out the analyses, assignment, and modular organization for the functions of the electrical equipment, supervisory control and data acquisition system. Next is the introduction to the framework and utilization of the off-island new SCADA system, which includes controllers and human-machine interface (HMI) functions and their features. The graphical HMI of the supervisory control system is taken as the core, with the data communications as the platform, and integrated with the programmable logic controller (PLC) of each sub-system through the PROFIBUS PD network communication. It transfers all of the supervisory control data of each sub-system into the database in the central data management unit. Therefore, the operator can supervise and control the operation of the entire plant through the SCADA work-station in the central control room and on-site HMI.The monitoring and control consiles are situated in the central control room which includes electrical, fire-safety, water, central supervising, video recording, and public warning system, etc.. The central SCADA controlled diesel generator units and its electrical equipment systems is composed of the electrical, air conditioning, fire-safety, access, CCTV systems and others, and can achieve instantly supervisory control. This will not only effectively control the energy, material, and equipment aspects; it can also reduce the losses by activating fire-fighting related systems in the event of a fire alarm. And also provide user-friendly interfaces to allow the management system to achieve goals of computerization, automation, and information-oriented. Lastly, this thesis introduces the use of InTouch graphical control software and ICP DAS PLC to establish a SCADA control environment. A basic simulation board with function similar to the real SCADA system was constructed. It can demonstrate the similar and practical functions among I/O devices, PLC, HMI and SCADA system in the real power plant system. |
