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A Quick Overview of Some of AECI’s SCADA Alarming Practices

This overview delves into AECI's SCADA alarming practices, focusing on alarm philosophy background, severity prioritization, consequences, and response time. Learn about MVA alarms for line loading, temperature data integration, voltage limits, and more. Understand how AECI rationalizes alarm severity and determines priority based on consequence severity and response time, impacting operational decisions in real-world scenarios.

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A Quick Overview of Some of AECI’s SCADA Alarming Practices

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  1. A Quick Overview of Some of AECI’s SCADA Alarming Practices

  2. Alarm Philosophy Background

  3. Should an alarm exist? An audible and/or visible means of indicating to the operatoran abnormal condition requiring a response. (ISA 18.2)

  4. How Severe? Rationalization Severity Priority High Medium Low How long before it happens? Consequence Time to Respond

  5. Severity of Consequence + Time = Priority

  6. In the real world…

  7. MVA Alarms – Line Loading

  8. MVA - Dynamic Limits • Temperature data from a weather service • G&Ts associated with a region to determine location temperature • Substation owner associated with lines and transformers • Calculate rating based on most limiting element at the temperature for that region • FAC 008 • Conductor ratings • Map temperature adjusted ratings to SCADA points on EMS.

  9. Voltage Alarms

  10. Voltage Limits

  11. CB, CSW, MOS, Disconnects

  12. Fin

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