SCADA and Its Application in Electrical Power Systems

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Types of Sub

History of SCADA system

What is SCADA?

By Daniele Pugliesi — Own work, CC BY-SA 3.0, Link

Key features

  • Supervision:
  • Control:
  • Data collection:
  • Data communication:
  • Data presentation:

Components and its functions

By deramsey — Own work, CC BY-SA 4.0, Link

Applications of SCADA

  1. The system needs an uninterrupted power supply and a protected environment
  2. We would need to know the status of a complex power system in real-time
  3. We would need to monitor and control system that are in remote areas
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  1. The power generation, transmission and distribution sectors, supervision, monitoring, and control are the main aspects in all these areas. Therefore, the SCADA implementation of power system improves the overall efficiency of the system for optimizing, supervising, and controlling the generation, transmission & distribution systems. SCADA function in the power system network offers greater system reliability and stability for integrated grid operation.
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  • Continuous monitoring of speed and frequency of electrical machines
  • Geographical monitoring of coal delivery and water treatment processes
  • Electricity generation operations planning
  • Control of active and reactive power
  • Boiler and Turbine protection and their condition in case of thermal plant
  • Monitoring of renewable energy farms and load dispatch planning
  • Load scheduling
  • Historical data processing of all generation related parameters
  • Supervising the status of circuit breakers, protective relays, and other safety equipment
  • Power apparatus health monitor
  • The sequence of events recording
  • SCADA for power transmission system:
  • Re-routing services for station maintenance
  • Service restoration
  • Protective relay interface/interaction
  • Voltage regulation management
  • Load tap changer control
  • Transformer management
  • Real-time modeling
  • Automatic circuit isolation control and interactive switch control display
  • Interface real-time single-line displays
  • On-line operation and maintenance logs
  • Automatic system diagnostics by using system-defined controller alarms (alarm management)
  • SCADA for power distribution system:
  • Improving efficiency by maintaining a tolerable range of power factor
  • Limiting peak power demand
  • Trending and alarming the operators by identifying the problem spot
  • Historian data and viewing that from remote and barely inaccessible locations
  • Quick response to customer service interruptions
  • Feeder automation and Load Sectionalizer
  • Provide the ability to over-ride automatic control of capacitor banks
  • Automated meter reading
  • Circuit breaker control, lockout, and interlocking
  • Continuous monitoring and controlling of various electrical parameters in both normal and abnormal conditions which may affect the quality like harmonic distortions

Advantages of SCADA

  • Optimizing performance:
  • Reliability and robustness:
  • Maximize productivity:
  • Improve quality:
  • Reduce operating and maintenance costs:
  • Integrate with business systems:


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AllumiaX Engineering

AllumiaX Engineering

Leaders in Industrial & Commercial Power Systems Engineering