EE 445 Course Presentation Power System Protection

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EE 445Course PresentationPower System
Protection

• Mohammed AL-Zeer
• 224026

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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?

4
Introduction

• How much it will cost to construct 1 km of T.L ?

5
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 You
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Q A