__EE3602__

__POWER SYSTEM OPERATION AND CONTROL__

**COURSE OBJECTIVES:**

**To
impart knowledge on,**

•
The significance of power system operation and control.

•
Real power-frequency interaction and design of power- frequency controller.

•
Reactive power-voltage interaction and the compensators for maintaining the
voltage profile.

•
The generation scheduling and economic operation of power system.

•
SCADA and its application for real time operation and control of power systems.

**UNIT I**

**INTRODUCTION**

Power
scenario in Indian grid - National and Regional load dispatching centres -
Requirements of good power system - Necessity of voltage and frequency
regulation - real power vs frequency and reactive power vs voltage control
loops - System load variation, load curves - Load forecasting - Computational
methods in load forecasting - Load shedding and Islanding - deregulation -
Basics of electrical energy tariff.

**UNIT II**

**REAL POWER FREQUENCY CONTROL**

Basics
of speed governing mechanisms and modelling - Speed regulation of two
generators in parallel Load Frequency Control (LFC) of single area system -
Static and dynamic analysis - LFC of two area system -Tie line modelling -
Block diagram representation of two area system - Static and dynamic analysis -
Tie line with frequency bias control - State variable model - Integration of
economic dispatch control with LFC.

**UNIT III**

**REACTIVE POWER - VOLTAGE CONTROL **

Generation
and absorption of reactive power - Basics of reactive power control - Automatic
Voltage Regulator (AVR) - Brushless AC excitation system - Block diagram
representation of AVR loop static and dynamic analysis - Stability compensation
- Voltage drop in transmission line - Methods of reactive power injection - Tap
changing transformer, SVC and STATCOM for voltage control.

**UNIT IV**

**ECONOMIC OPERATION OF POWER SYSTEM **

Statement
of economic dispatch problem - Input and output characteristics of thermal
plant incremental cost curve - Optimal operation of thermal units without and
with transmission losses (no derivation of transmission loss coefficients) -
Lambda-iteration method Base point and participation factors method. Statement
of Unit Commitment (UC) problem - Constraints on UC problem - Solution of UC
problem using priority list - Special aspects of short term and long-term
hydrothermal scheduling problems.

**UNIT V**

**COMPUTER AIDED CONTROL OF POWER SYSTEM**

Need
of computer control of power system - Concept of energy control centers and
functions - PMU system monitoring, Data acquisition and controls - System
hardware configurations - SCADA and EMS functions - State estimation -
Measurements and errors - Weighted least square estimation - Various operating
states - State transition diagram.

**TOTAL:
45 PERIODS**

**COURSE OUTCOMES:**

On
the successful completion of the course, students will be able to:

**CO1:
**Understand
the day-to-day operation of power system.

**CO2:**
Model and analyse the control actions that are implemented to meet the
minute-to- minute variation of system real power demand.

**CO3:**
Model and analyze the compensators for reactive power control and various devices
used for voltage control.

**CO4:**
Prepare day ahead and real time economic generation scheduling.

**CO5:
**Understand
the necessity of computer control of power systems.

**TEXTBOOKS:**

1.
Olle. I. Elgerd, 'Electric Energy Systems theory - An introduction', McGraw
Hill Education Pvt. Ltd., New Delhi, 2nd edition, 2017.

2.
Allen. J. Wood and Bruce F. Wollen berg, 'Power Generation, Operation and
Control', John Wiley & Sons, Inc., 3rd edition, 2013.

3.
Abhijit Chakrabarti and Sunita Halder, 'Power System Analysis Operation and
Control', PHI learning Pvt. Ltd., New Delhi, Fourth Edition, 2018.

**REFERENCE BOOKS:**

1.
Kothari D.P. and Nagrath I.J., 'Power System Engineering', Tata McGraw-Hill
Education, Second Edition, Reprint 2018.

2.
Hadi Saadat, 'Power System Analysis', McGraw Hill Education Pvt. Ltd., New
Delhi, 23rd reprint, 2015.

3.
Kundur P., 'Power System Stability and Control, McGraw Hill Education Pvt.
Ltd., New Delhi, 12th reprint, 2015.

4.
B.M. Weedy, B.J. Cory et al, 'Electric Power systems', Wiley, Fifth Edition,
2012.