El 6633 – Transients, Surges and Faults in Power Systems




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EL 6633 – Transients, Surges and Faults in Power Systems


By: Gerry Volpe Fall 2009


Objective:


At the end of the term the participants should be able to analyze and compute the most common transients that occur in power systems. These are classified as line switching and lightning disturbances. Preventative methods to minimize these effects will be studied. Switching transients in simple electrical circuits will be analyzed and modeled with appropriate circuit analysis software. Significant focus will be on Transient Recovery Voltage (TRV)

Non-linear circuits devices needed to protect equipment and personnel will be introduced to form a basis for various class projects.

Three-phase circuits including transformers, machines, and other circuit elements will be studied under normal and fault conditions. Appropriate power system software will be utilized for analysis verification. Symmetrical components will be studied to analyze symmetrical and asymmetrical faults.

Introduction to transmission line theory. Transients on transmission lines due to reflections. Steady state analysis under load conditions

Textbook: “Electrical Transients in Power Systems”, A. Greenwood, John Wiley, 1991


ISBN: 978-0-471-62058-7


Reference Material:


[1] L. Van der Sluis, Transients in Power Systems, John Wiley & Sons, 2001.

ISBN: 978-0-471-48639-8


[2] P.E. Viemeister, "The Lightning Book", MIT Press, 1972.


[3] N. R. Watson and N. Watson, “Power Systems Electromagnetic Transients Simulation”, IEE Power & Energy Series, 2001.


[4] P. Chowdhuri, “Electromagnetic Transients in Power Systems”, Research Studies Press, 1996.


[5] J. Glover, et al. “Power System Analysis and Design”, Thomson, 2008


[6] L. Faulkenberry and W. Coffer, “Electrical Power Distribution and Transmission”, Prentice Hall, 1996



-------------------------------------------------------------------------
Dr. Gerald T. Volpe
Adjunct Professor, Polytechnic University of NY
238 Westwood Road, Stamford, CT, 06902
gbvolpe@att.net


SYLLABUS SCHEDULE

 




WK

DATE

TOPIC

TxtCh/CLNotes

Assignment










1

SEPT 9




Introduction


T-1



2

SEPT 16

Electrical Circuits Review

CN*

Prob. Set 1


3

SEPT 23




The Non-Linear Element

T-2




4

SEPT 30




Power Systems Modeling**

CN

Prob. Set 2

5

OCT 7




Three Phase Systems

CN




6

OCT 14



QUIZ #1





7

OCT 21




Switching Transients

T-3

Prob. Set 4

8

OCT 22




Transient Recovery Voltage

T-3

Prob. Set 5

9

NOV 5




Faults in 3 Phase Systems

CN


Prob. Set 3

10

NOV 12



Circuit Breaker Action**


T-4




11

NOV 19




Lightning Induced Transients

T-7




12






THANKSGIVING





***

13

DEC 2




Transmission Lines

T-3 & CN

Prob. Set 6

14

DEC 9




Transmission Lines

T-3 & CN




15

DEC 16


Transmission Lines

T-3 & CN

16

Dec 23

Final exam







* CN=Class Notes

** See Schneider Electric website




Detailed Syllabus





  1. Introduction

    1. Discussion of lightning, lightning rods and arresters

    2. Circuit breakers for over current protection

    3. Surge protection for equipment

    4. Ground shielding




  1. Electric Circuits:

    1. Current and voltage sources

    2. Resistance, inductance and capacitance

    3. Series and parallel RC,RL and RLC circuits

    4. Natural and forced responses

    5. MCAP or Workbench circuit examples

    6. Transient Recovery Voltage (TRV)




  1. The Non-Linear Element

    1. Arc analysis

    2. The Varistor

    3. Lightning arrester

    4. Semiconductors; SCR and Thyristor switches




  1. Power System Modeling

    1. Transmission lines

    2. Cables

    3. Transformers

    4. Generators




  1. Three Phase Systems

    1. Review of balanced three phase systems

    2. Symmetrical faults-equivalent single phase system

    3. Asymmetrical faults-Symmetrical components




  1. Transients in Three-Phase Systems

    1. Symmetrical components

    2. Modal transformations

    3. Connection of lines, transformers, capacitors and faults



  1. Transmission Lines

  1. Derivation of transmission line equation

  2. Reflection diagram

  3. Steady state analysis

  4. Pi equivalent for short lines




  1. Lightning

    1. Description of the problem

    2. Physical phenomena

    3. Effects in the power system



Grading:

Quizzes 50% Projects 30% Homework Assignments 20%




Plagiarism clause: Each student is expected to do his/her own work. If Internet information is used for an assignment or project it is required to cite the URL address of the source. Not doing so is plagiarism. If collaboration is warranted on an assignment or project, permission is required by the instructor well in advance of the due date. Violation of this rule is considered dishonest and the offender will be subject to disciplinary action.



http://home.att.net/~gbvolpe/Transients_Syllabus.htm



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