EE2401 Power System Operation and Control - SUBJECT CATALOG

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SYLLABUS:

EE2401           POWER SYSTEM OPERATION AND CONTROL            L T P C

3 0 0 3

AIM:

To understand the day to day operation of power system and the control actions to be implemented on the system to meet the minute-to-minute variation of system load demand.

OBJECTIVES:

i.	To have an overview of power system operation and control.
ii.	To model power-frequency dynamics and to design power-frequency controller.
iii.	To model reactive power-voltage interaction and the control actions to be      implemented	for

maintaining the voltage profile against varying system load.

UNIT I INTRODUCTION       9

System load – variation - load characteristics - load curves and load-duration         curve               (daily, weekly and annual) - load factor - diversity factor. Importance of            load     forecasting      and      simple techniques of forecasting. An overview of power     system  operation  and  control  and  the  role  of computers in the implementation.          (Qualitative treatment with block diagram).

UNIT II            REAL POWER - FREQUENCY CONTROL            9

Basics of speed governing mechanism and modeling - speed-load characteristics – load sharing between two synchronous machines in parallel. Control area concept      LFC  control  of  a  single- area system. Static and dynamic analysis of uncontrolled       and      controlled        cases.  Integration       of economic dispatch control with LFC. Two-area system – modeling - static analysis of uncontrolled case - tie line with        frequency bias control of two-area system - state variable model.

UNIT III           REACTIVE POWER–VOLTAGE CONTROL          9

level control using generator voltage magnitude setting, tap setting of	OLTC	transformer    and
MVAR injection of switched capacitors to maintain  acceptable   voltage	profile	and   to   minimize
transmission loss.

Basics of reactive power control. Excitation systems – modeling. Static and           dynamic analysis - stability compensation - generation and absorption of reactive power. Relation between voltage, power and reactive power at a node - method of voltage control - tap-changing transformer. System

UNIT IV           UNIT COMMITMENT AND ECONOMIC DISPATCH       9

Statement of economic dispatch problem – cost of generation – incremental cost curve co-ordination equations  without  loss  and  with  loss,  solution  by  direct  method  and  λ-iteration  method.          (No derivation of  loss  coefficients). Statement of  Unit  Commitment problem –  constraints; spinning reserve, thermal unit constraints, hydro constraints, fuel constraints and other constraints. Solution methods - Priority-list methods - forward dynamic programming approach.         Numerical

problems only in priority-list method using full-load average production cost.

UNIT V            COMPUTER CONTROL OF POWER SYSTEMS 9

Need of computer control of power systems. Concept of energy control centre (or) load dispatch centre and the functions - system monitoring  - data  acquisition  and  control. System hardware configuration – SCADA and EMS functions. Network topology - state estimation - security analysis and control. Various operating states (Normal, alert, emergency, in-extremis and restorative). State transition diagram showing various state transitions and control strategies.

TOTAL : 45 PERIODS

TEXT BOOKS

1. Allen. J. Wood and Bruce F. Wollenberg, ‘Power Generation, Operation and Control’, John Wiley

& Sons, Inc., 2003.

2.  Chakrabarti & Halder, “Power System Analysis: Operation and Control”, Prentice Hall of India,

2004 Edition.

REFERENCES

1.  D.P. Kothari and I.J. Nagrath, ‘Modern Power System Analysis’, Third Edition, Tata McGraw Hill

Publishing Company Limited, New Delhi, 2003. (For Chapters 1, 2 & 3)

2.  L.L. Grigsby, ‘The Electric Power Engineering, Hand Book’, CRC Press & IEEE Press, 2001.

3.   Hadi Saadat, “Power System Analysis”, (For the chapters 1, 2, 3 and 4)11th Reprint

2007.

4.   P.Kundur, ‘Power System Stability and Control’ MC Craw Hill Publisher, USA, 1994.

5.   Olle.I.Elgerd, ‘Electric Energy Systems theory An introduction’ Tata McGraw Hill

Publishing Company Ltd. New Delhi, Second Edition 2003.