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EE119 Power System –II L-T-P-Cr: 3 - 1 -0-4 Objective- To learn operation of power plant, economy of power system Pre-requisite-Power System-1 Outcome: Student will be able to understand process of power generation, power flow, behaviour of power system under different fault condition and stability of power system Syllabus: Unit 1. Power Plants: Hydro power Station: Site selection, Layout, Calculation of available Power, Classification, Salient features, Pumped hydro plants. Thermal Power Station: Site selection, layout, calculation of coal requirements, cooling water/ tower, efficiency, co-ordination of hydro and thermal power stations. Nuclear power plant 8 Hours Unit 2. Economy of Power System: Load Curves, Load duration Curves, Diversity Factor, Base and Peak Load Stations, Cost allocation of Power station – Fixed cost, Operating Cost, Two Par Tariff and Evaluation. 4 Hours Unit 3. Load Flow Analysis: Different types of buses, Power flow equation, Classification buses, Objective of load flow, problem formulation, Formation Y-bus matrix, Calculation of voltage by Gauss and Gauss-Siedel Method, Covergence problem, Flow chart of load flow analysis for all kinds of buses. 8 Hours Unit 4. Symmetrical three phase faults on synchronous machines: Short Circuit current and reactance of Synchronous machines, Internal Voltage of Loaded Machines under transient conditions. 4 Hours Unit 5. Symmetrical Components: Synthesis of unsymmetrical phases from their symmetrical components, operators. The Symmetrical components of unsymmetrical phase, phase shift in transformer bank, power in terms of symmetrical components; unsymmetrical series impedances; Sequence impedances and sequence networks; sequence networks of unbalanced generators; Sequence impedance of circuit elements positive and negative sequence networks; Zero sequence network. 6 Hours Unit 6. Unsymmetrical Faults; Single line to ground fault, line to line fault, double line to ground fault on unloaded generator and power systems, Interpretation of inter guidance sequence networks. 6 Hours Unit 7. Power System Stability: Steady State power limit of cylindrical rotor and salient pole machines without saturation, Maximum power transmitted to a transmitting network, series capacitor. Transient stability Power Angle curve, Inertia clearance angle, equal swing equation, equal area criterion and its application. 6 Hours Suggested Readings: 1. Stevention, Elements of Power System Analysis; 3rd Edition McGraw Hill 2. C.L. Wadhwa, Electrical Power System, Wiley Eastern 3. Nagrath & Kothari, Modern Power System Analysis, Tata McGraw Hill 4. Soni, Gupta and Bhattnagar, A Course of Electrical Power; Dhanpat Rai & Sons 5. P Kundu, Power System Stability and Control, TMH