JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-requisites

Power System-I, Power System-II

Course Objectives:

• To understand real power control and operation
• To know the importance of frequency control
• To analyze different methods to control reactive power
• To understand unit commitment problem and importance of economic load dispatch
• To understand real time control of power systems

Course Outcomes

At the end of the course the student will be able to:

• Understand operation and control of power systems.
• Analyze various functions of Energy Management System (EMS) functions.
• Analyze whether the machine is in stable or unstable position.
• Understand power system deregulation and restructuring

UNIT - I

Load Flow Studies Introduction, Bus classification -Nodal admittance matrix - Load flow equations - Iterative methods - Gauss and Gauss Seidel Methods, Newton-Raphson Method-Fast Decoupled method-Merits and demerits of the above methods-System data for load flow study

UNIT - II

Economic Operation of Power Systems Distribution of load between units within a plant-Transmission loss as a function of plant generation, Calculation of loss coefficients-Distribution of load between plants.

UNIT - III

Load Frequency Control Introduction, load frequency problem-Megawatt frequency (or P-f) control channel, MVAR voltages (or Q-V) control channel-Dynamic interaction between P-f and Q-V loops. Mathematical model of speed- governing system-Turbine models, division of power system into control areas, P-f control of single control area (the uncontrolled and controlled cases)-P-f control of two area systems (the uncontrolled cases and controlled cases)

UNIT - IV

Power System Stability The stability problem-Steady state stability, transient stability and Dynamic stability-Swing equation. Equal area criterion of stability-Applications of Equal area criterion, Step by step solution of swing equation-Factors affecting transient stability, Methods to improve steady state and Transient stability, Introduction to voltage stability

UNIT - V

Computer Control of Power Systems 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 – Importance of Load Forecasting and simple techniques of forecasting.

R18 B.TECH EEE III YEAR

TEXT BOOKS

• 1. C. L. Wadhwa, Electrical Power Systems, 3rd Edn, New Age International Publishing Co., 2001.
• 2. D. P. Kothari and I. J. Nagrath, Modern Power System Analysis, 4th Edn, Tata McGraw Hill Education Private Limited 2011.

REFERENCES:

• 1. D. P. Kothari: Modern Power System Analysis-Tata Mc Graw Hill Pub. Co. 2003.
• 2. Hadi Sadat: Power System Analysis –Tata Mc Graw Hill Pub. Co. 2002. R18 B.TECH EEE III YEAR