18EE71 Power System Analysis – 2 syllabus for EE

Network Topology:

Introduction and basic definitions of Elementary graph theory Tree, cut-set, loop analysis. Formation of Incidence Matrices. Primitive network- Impedance form and admittance form, Formation of Y Bus by Singular Transformation. Ybus by Inspection Method. Illustrative examples.

Load Flow Studies:

Introduction, Classification of buses. Power flow equation, Operating Constraints, Data for Load flow, Gauss Seidal iterative method. Illustrative examples.

Load Flow Studies(continued)

Newton-Raphson method derivation in Polar form, Fast decoupled load flow method, Flow charts of LFS methods. Comparison of Load Flow Methods. Illustrative examples.

Economic Operation of Power System:

Introduction and Performance curves Economic generation scheduling neglecting losses and generator limits Economic generation scheduling including generator limits and neglecting losses Economic dispatch including transmission losses Derivation of transmission loss formula. Illustrative examples.

Unit Commitment:

Introduction, Constraints and unit commitment solution by prior list method and dynamic forward DP approach (Flow chart and Algorithm only).

Symmetrical Fault Analysis:

Z Bus Formulation by Step by step building algorithm without mutual coupling between the elements by addition of link and addition of branch. Illustrative examples.Z bus Algorithm for Short Circuit Studies excluding numerical.

Power System Stability:

Numerical Solution of Swing Equation by Point by Point method and Runge Kutta Method. Illustrative examples. 

Course Outcomes:

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

• Formulate network matrices and models for solving load flow problems.
• Perform steady state power flow analysis of power systems using numerical iterative techniques.
• Solve issues of economic load dispatch and unit commitment problems.
• Analyze short circuit faults in power system networks using bus impedance matrix.
• Apply Point by Point method and Runge Kutta Method to solve Swing Equation.

Question paper pattern:

• The question paper will have ten questions.
• Each full question is for 20 marks.
• There will be 2 full questions (with a maximum of three sub questions in one full question) from each module.
• Each full question with sub questions will cover the contents under a module.
• Students will have to answer 5 full questions, selecting one full question from each module.

Module 1 Y _Bus Matrix size limited to 3X3 for illustrative examples.

Module 2 NR Method limited to 3 bus system with one iteration for illustrative examples.

Text Books

1 Modern Power System Analysis D P Kothari, I J Nagrath McGraw Hill 4 th Edition, 2011

2 Computer Methods in Power Systems Analysis Glenn W. Stagg Ahmed H Ei - Abiad Scientific International Pvt. Ltd. 1 st Edition, 2019

3 Power Generation Operation and Control Allen J Wood etal Wiley 2 nd Edition,2016

Reference Books

1 Computer Techniques in Power System Analysis M.A. Pai McGraw Hill 2 nd Edition, 2012

2 Power System Analysis Hadi Saadat McGraw Hill 2ndEdition, 2002