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EE 2027 - POWER SYSTEM TRANSIENTS

SEM: VIII YEAR: IV DEPT: EEE

R.HARIHARANLECT/ 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

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LOAD SWITCHING • Normal and abnormal switching

transients • Current chopping • Capacitance switching • 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

R.HARIHARAN, LECT / EEE

TEXT BOOK REFERENCE BOOK

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EE2027 POWER SYSTEM TRANSIENTS

R.HARIHARAN, LECT / EEE

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

R.HARIHARAN, LECT / EEE

SEMINAR TOPICS

• Importance of transients• Ferro resonance• Protection against lightning transients• Classifications of transmission lines• Over voltage due to ground faults.