Course Objectives:
The objectives of the course are to make the students learn about:
Y bus and Z bus of a Power System network
Power flow studies by various methods.
Short circuit analysis of power systems.
Swing equation and its solution
Equal area criterion and its applications
UNIT -I
POWER SYSTEM NETWORK MATRICES
Representation of Power System Elements, Graph Theory: Definitions, Bus Incidence Matrix, Ybus Formation by Direct and Singular Transformation Methods, Numerical Problems. Formation of ZBus: Partial Network, Algorithm for the Modification of ZBus Matrix for Addition Element for the Following Cases: Addition of Element from a New Bus to Reference, Addition of Element from a New Bus to an Old Bus, Addition of Element Between an Old Bus to Reference and Addition of Element Between Two Old Busses (Derivations and Numerical Problems).- Modification of ZBus for the Changes in Network ( Problems )
UNIT – II
SHORT CIRCUIT ANALYSIS
Per-Unit System of Representation. Per-Unit Equivalent Reactance Network of a Three Phase Power System, Numerical Problems. Symmetrical Fault Analysis: Short Circuit Current and MVA Calculations, Fault Levels, Application of Series Reactors, Numerical Problems. Symmetrical Component Theory: Symmetrical Component Transformation, Positive, Negative and Zero Sequence Components: Voltages, Currents and Impedances. Sequence Networks: Positive, Negative and Zero sequence Networks, Numerical Problems. Unsymmetrical Fault Analysis: LG, LL, LLG faults with and without Fault Impedance, Numerical Problems.
UNIT – III
POWER FLOW STUDIES-I
Necessity of Power Flow Studies – Data for Power Flow Studies – Derivation of Static Load Flow Equations – Load Flow Solutions using Gauss Seidel Method: Acceleration Factor, Load Flow Solution with and without P-V Buses, Algorithm and Flowchart. Numerical Load flow Solution for Simple Power Systems (Max. 3-Buses): Determination of Bus Voltages, Injected Active and Reactive Powers (Sample One Iteration only) and Finding Line Flows/Losses for the given Bus Voltages.
UNIT – IV
POWER FLOW STUDIES-II
Newton Raphson Method in Rectangular and Polar Co-Ordinates Form: Load Flow Solution with or without PV Buses- Derivation of Jacobian Elements, Algorithm and Flowchart. Decoupled and Fast Decoupled Methods.- Comparison of Different Methods – DC Load Flow
UNIT – V
POWER SYSTEM STABILITY ANALYSIS
Elementary Concepts of Steady State, Dynamic and Transient Stabilities - Description of: Steady State Stability Power Limit, Transfer Reactance, Synchronizing Power Coefficient, Power Angle Curve and Determination of Steady State Stability and Methods to Improve Steady State Stability - Derivation of Swing Equation - Determination of Transient Stability by Equal Area Criterion, Application of Equal Area Criterion, Critical Clearing Angle Calculation. Solution of Swing Equation by 4th Order Runga Kutta Method (up to 2 iterations) - Methods to improve Stability - Application of Auto Reclosing and Fast Operating Circuit Breakers.
Study Material's for Power System Analysis
Power System Analysis(T.B) By Jhon J.Grainger: Download
2 Mark's for 5 Units: Download
Unit-1:
Power System Network Matrices: Download
Ybus & Zbus : Download
Unit-2:
Short Circuit Analysis (PPT): Download
Unit-3 &4:
Power Flow Analysis: Download
Unit-5:
Power System Stability: Download
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