SCADA Supervisory Control and Data Acquisition

[seminar class]

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Supervisory Control and Data Acquisition (SCADA)
SCADA systems are used for monitoring and controlling chemical or transport processes and can be used in a factory environment such as electric power generation, water supply systems, gas and oil pipelines or any other distributed processes. In the field of electrical engg. SCADA is used in Distribution Automation.
• What we get out of distribution automation by SCADA systems??
SCADA principles of operation
• Master station and HMI
• Master station - The term "Master Station" refers to the servers and software responsible for communicating with the field equipment (RTUs, PLCs, etc)
• HMI(Human Machine Interface) - The HMI of a SCADA system is where data is processed and presented to be viewed and monitored by a human operator. This interface usually includes controls where the individual can interface with the SCADA system.
• HMI
Interface with physical studies
• Programmable Logic Controllers(PLC)
• Intelligent Electronics Devices(IED)
• Remote Terminal Units (RTU)
Communication Interface
• Fiber optics
• Low power radio
• Communications by fiber optics
• SCADA Functionalities
• Monitoring and control of EHV and HV network
• Distribution network power flow - To execute real-time power flow studies for optimal switching
• Fault location, isolation and service restoration
• Switching procedure management – execute switching orders
• Outage management systems – keeps records of forced and planned outages
• Load shedding and restoration
• Short term load forecasting
• Alarming facilities on fault detection
Future of SCADA in Distribution Automation
• The future SCADA systems are expected to centralize all the aspects of distribution i.e., supervisory, monitoring and controlling.
• Degree of automation and control is being improved which are to be used in future “Smart power grids”