Transcript POWER SYSTEM TRANSIENTS

EE 2027 - POWER SYSTEM
TRANSIENTS
SEM: VIII
YEAR: IV
DEPT: EEE
R.HARIHARAN
LECT/ EEE
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EE2027 POWER SYSTEM TRANSIENTS
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SWITCHING TRANSIENTS
• Effect of transients on power systems
• Importance of study of transients in
planning
• Resistance switching
• Observations in RLC circuit and basic
transforms of the RLC circuit
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EE2027 POWER SYSTEM TRANSIENTS
LOAD SWITCHING
• Normal and abnormal switching
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transients
• Current chopping
• Capacitance switching
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• Effect of voltage regulation
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EE2027 POWER SYSTEM TRANSIENTS
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LIGHTNING TRANSIENTS
Causes of over voltage
Lightning phenomenon
Mechanisms of lighting strokes
Protection afforded by ground wires
Interaction between lightning and power
system
Mathematical model for lightning
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EE2027 POWER SYSTEM TRANSIENTS
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TRAVELLING WAVES ON TRANSMISSION
LINE AND TRANSIENTS
• Computation of transients
• Travelling wave concept
• Bewely’s lattice Diagram
• Reflection and refraction of travelling
waves
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EE2027 POWER SYSTEM TRANSIENTS
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TRANSIENTS IN INTEGRATED POWER
SYSTEM
• Distribution of voltage in a power
system
• Voltage transients on closing and
reclosing lines
• Switching surges on integrated
system
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EE2027 POWER SYSTEM TRANSIENTS
TEXT BOOK
REFERENCE BOOK
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EE2027 POWER SYSTEM TRANSIENTS
ASSIGNMENT TOPICS
• Capacitance switching
• Mathematical model for
lightning
• Bewley’s lattice
• EMTP for transient
computation
• Past university exam 2
marks
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EE2027 POWER SYSTEM TRANSIENTS
SEMINAR TOPICS
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Importance of transients
Ferro resonance
Protection against lightning transients
Classifications of transmission lines
Over voltage due to ground faults.
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