Internet protocol based monitoring and control system for Iraqi power generation stations.

Suhail Najim Obaid Al-Qaisy
Dr. Nasser N. Al-Ani

Abstract: As electrical power industry enters the new century, Computer-based Supervisory Control and Data Acquisition (SCADA) systems have been evolved from standalone, traditional compartmental operations into networked architectures that communicate through computer networks across large distances. The SCADA system that monitors and controls the Iraq power generation plant suffers from repeated failure in the data transfer via the radio link of the communication network used because of the unavailability and instability of this link which is affected by the military jamming signals and by other external interference signals which degrade the system operation and decrease the system stability and performance. Moreover the used serial communication links of typical data rate (300-19200 bit/second) are considered relatively low bit rate especially when planning to add more services to the SCADA system which increase the system limitation. This thesis addresses the design of an IP based SCADA system and proposes the use of an optical communication backbone as a communication media instead of the radio media because of its very high immunity to external interference signals and high bit rate up to several gigahertz. The optical fiber backbone is used because of its facilities and because it is already installed in Iraq so there is no need to install a new infrastructure which saves the cost of installing a new one. The proposed communication network has been simulated and was operated successfully. Most of the proposed SCADA system elements have been configured. The proposed services have been tested over local and global (over the internet) networks and were operational.