ee 445 course presentation power system protection mohammed al-zeer 224026
TRANSCRIPT
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EE 445Course Presentation
Power System Protection
Mohammed AL-Zeer224026
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Outline• Introduction • Power System• Power System Protection• Relays• Conclusion
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Introduction• How much it will cost to build a
substation?
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Introduction
• How much it will cost to construct 1 km of T.L ?
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Introduction
• How much it will cost to buy a large generator?
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Introduction
25%
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Power System
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Power system Protection
• Transducer• Circuit breakers• Protective relays
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Transducer
• sensor & transformer• Current transformer (CT) & Potential transformer (PT)
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Circuit Breakers
• Mechanical device• Energize & interrupt electric
circuits
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Protective Relays
• Receive signals from transducers &
Control circuit breakers
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Protection Systems
• Main protection• Backup Protection
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Zones of Protection
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Requirements of Protection Systems
• Speed• Selectivity• Reliability• Sensitivity
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Types of Protective Relays
• Over-current Relays• Differential Relays• Percentage-Differential Relays• Directional Relays
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Over-current Relays
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Types of Protective Relays
• Over-current Relays
• Differential Relays• Percentage-Differential Relays• Directional Relays
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Differential Relays
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Types of Protective Relays
• Over-current Relays• Differential Relays
• Percentage-Differential Relays• Directional Relays
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Types of Protective Relays
• Over-current Relays• Differential Relays• Percentage-Differential Relays
• Directional Relays
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Application
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Conclusion
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References
• Electromechanical Energy Devices And Power Systems (EE 360)
• Power System Relaying (EE 466)
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Thank YouThank YouThank YouThank You
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Q & AQ & AQ & AQ & A