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Department of Electrical Engineering, GHRCE, Nagpur Teaching Plan, Session 2011-12 Subject: POWER SEMICONDUCTOR BASED DRIVES B.E. (Electrical) Sem-VIII Lecture No. 1 Unit No. Topics 1 Basic information about Ac and Dc drives Advantages of Electrical Drives, Choice of electrical drives B.D. of electrical Drives and Four quadrant operation of electrical drive Dynamics of electrical Drives Components of load torques, Nature and classification of load torque and control of electrical Drives Energy conservation in electrical Drive D.C. Motor Drives: Single phase fully controlled rectifier control of DC separately excited motor. Single phase Half controlled rectifier control of DC separately excited motor. Numerical based on above topics Numerical based on above topics Three phase fully controlled rectifier control of dc separately excited motor Three phase half controlled rectifier control of dc separately excited motor Numerical Dual converter control of DC separately excited motor Chopper controlled of separately excited DC motor drives Chopper control of series motor and power factor ,supply harmonics and ripple in motor current Unipolar and bipolar Brushless DC motor Comparison between both, advantages, speed control and application of BDC M Switched Reluctance motor Switched Reluctance motor Stepper motor Stepper motor Solar and battery powered drives Solar and battery powered drives Conventional Dc and AC traction drives Conventional Dc and AC traction drives Semiconductor converter controlled drives Semiconductor converter controlled drives DC traction employing polyphase AC motors DC traction employing polyphase AC motors AC traction employing polyphase AC motors AC traction employing polyphase AC motors Stator voltage control and variable frequency control from voltage sources Stator voltage control and variable frequency control from voltage sources Voltage source inverter control Voltage source inverter control Current source inverter control Current source inverter control Cycloconverter control Cycloconverter control Rotor resistance control : static rotor resistance Rotor resistance control : static rotor resistance Slip power recovery: Static Scherbius and static Kramer drives Slip power recovery: Static Scherbius and static Kramer drives Slip power recovery: Static Scherbius and static Kramer drives Synchronous motor variable speed drives and different modes Synchronous motor variable speed drives and different modes Self controlled SM drive employing load commuted thyrister inverter Self controlled SM drive employing load commuted thyrister inverter Self controlled SM drive employing cycloconverter Self controlled SM drive employing cycloconverter 2 3 4 5 6 2 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 5 6 3 4 Prof. M.Ahmad Section :- A Semester -VIII Prof. S.V.Umredkar Section :- B Semester –VIII Dr. S.B.Bodkhe HoD EE Department of Electrical Engineering, G.H.Raisoni College of engineering Teaching Plan, Session 2011-12 Subject: COMPUTER APPLICATION IN ELECTRICAL ENGG. B.E. (Electrical) Sem-VIII Lecture No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. Unit No. 1 2 3 4 5 6 Topic Introduction to the subject. Network Graph, Tree Co-tree, Basic definitions. Matrices: A^ and A and example. Matrices B, B^ ,C ,C^ and K. Examples on formation of matrices. Examples on formation of matrices. Primitive network: Impedance and admittance forms. Introduction to singular transformation. Derivations on singular transformation and examples. Introduction to Bus impedance matrix, partial network. Algorithm for addition of branch and example. Algorithm for addition of link and example. Z-BUS formation example. Z-BUS formation example. Z-BUS formation example. Z-BUS formation example. Z-BUS formation example. Representation of three phase systems: Impedance and admittance forms. Transformation Matrices Three phase balanced network elements with balanced excitation. Three phase balanced network elements with unbalanced excitation. Algorithm for formation of three phase Z-Bus Example on 3-phase Z-BUS Example on 3-phase Z-BUS Revision of section -A Introduction to Load-Flow and formation of Y-Bus by inspection method. Load flow by Gauss Seidel method with & without voltage controlled buses Example on Gauss-Seidel method. Load flow by N-R method Example on N-R method. Voltage controlled bus in GS-NR method Representation of tap changing transformer and phase shifting transformers. Comparison of different methods Introduction to short circuit studies and assumptions Three phase network short circuit calculations: L-G Fault Three phase network short circuit calculations: L-L-L-G Fault Three phase network short circuit calculations: L-L Fault Three phase network short circuit calculations: L-L-G and Three phase network short circuit calculations: L-L-L Fault Example on Short circuit analysis. Example on Short circuit analysis. Introduction to transient stability analysis. Swing equation and its derivation. Transient stability analysis by modified-Euler’s method. Transient stability analysis by modified-Euler’s method.(Examples) R-K Method R-K Method (Example) Revision of section -B Revision Revision Revision Prof. P.R.Sawarkar Section :- A Semester -VIII Prof. K. D. Joshi Section :- B Semester –VIII Dr. S.B .Bodkhe HoD EE Department of Electrical Engineering, GHRCE, Nagpur Teaching Plan, Session 2011-12 Subject: SWITCHGEAR & PROTECTION B.E. (Electrical) Sem-VIII Lecture No. 1 2 Unit No. 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 2 3 4 5 6 Topics Introduction to General Philosophy of Protective Relaying Protective Zones Primary Protection Back up protection Remote and Local Back up Selectivity Problems on above topics Medium Voltage Line Protection Over current relaying directional over current relays Problems on above topics Introduction to High Voltage Line Protection Distance relays carrier distance schemes Unit carrier schemes Problems on above topics Equipment Protection Principles of differential relaying protection of generator transformers and busbars by differential relaying and other relays Protection of Induction Motors against overloads Protection of Induction Motors against short circuits Protection of Induction Motors against thermal relays Protection of Induction Motors against miniature circuit breakers Introduction to Static Relays Comparison of static relays electro mechanical relays two input amplitude phase comparators and their duality Generation of various distance relay characteristics using above comparators Switchgear Circuit breakers Arc interruption therory Problems on above topics Problems on above topics recovery voltages Restriking voltages RRRV breaking of inductive currents breaking of capactive currents Problems on above topics Problems on above topics C.B. ratings different media of arc interruption overview of oil circuit breakers overview of oil circuit breakers construction of Air blast operation of Air blast SF6, vaccum breakers Revision Prof. S.K. Umathe Section : A Semester : VIII Prof. R.D.Saxena Section : B Semester : VIII Dr.S.B.Bodkhe HoD(EE) Department of Electrical Engineering, GHRCE, Nagpur Teaching Plan, Session 2011-12 Subject: EHVAC & HVDC TRANSMISSION B.E. (Electrical) Sem-VIII Lecture No. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Unit No. 1A 1B 2 3 25 26 27 28 4 29 30 5 31 32 33 34 35 36 37 38 39 40 6 Topics to be covered Subject Introduction Power handing capacities of EHV AC Transmission lines. Power handing capacities of EHV AC Transmission lines cont…. Power handing capacities of EHV AC Transmission lines cont…. Numericals on Power handing capacities of EHV AC Transmission lines. Voltage gradients : Electric field of point charge sphere gap- line charge, single and three phase lines sphere gap- line charge, single and three phase lines cont…. Maxwell’s potential co- efficients ,Mangolelt Formula Maxwell’s potential co- efficients , Mangolelt Formula cont…. Electrostatic and electromagnetic fields of EHV Lines, Electric shock and threshold current Capacitance of long object calculation of electromagnetic field of A.C. Lines (3-ph Single and double circuit line only) Effect of high electrostatics field measurement of electrostatic field, ground wires, electrostatic interference Corona : Types critical disruptive voltages Factor affecting corona Methods for reducing corona power loas corona current wave form charge voltage diagram audible noise and ratio interference Comparison of EHV AC and HVDC Systems. Conversion from AC to DC Rectifiers, conveters conversion from AC to DC Invertors. Kinds of DC Link Earth electrode and earth returns : Introduction objective, location and configuration, resistance of electrodes means of reducing earth electrode resistance Resistance troubles caused by earth electrode resistance trouble caused by earth current and remedies. Multiterminal HVDC System: Introduction 2 pole transmission. MTDC System with series and parallel connected convertors advantages parallel connected converters, advantages and applications configurations and types Power flow control in HVDC System: constant current constant voltage, constant ignition and exitation angle control, control characteristics. Parallel operation of AC and DC links (Synchronous and Asynchronous links) Harmonic Filters: Introduction Filters, Surge capacitors and Damping circuits shunt filters series Filters. Filters. AC filters, design of A. C. filters and tuned filters, double frequency and damped filters, cost considerations, Rating harmonics on D.C side of converters. D. C. Harmonic filters. Reactive power compensation: Reactive power requirements of HVDC converters, substations, effect of delay angle and extinction angle on reactive power. HVDC circuit breakers: Introduction, construction, Principle, switching energy. Interruption of D. C. current, application of MRTB, Types of HVDC C. B, capability and characteristics of HVDC circuit breakers. HVDC substation protection against short-circuits: Introduction, fault, clearing, protective, zones, protection, symbols, HVDC line pole protections (fault clearing and re-energizing. HVDC sub-station Protection against over-voltages Difference between insulation coordination of AC and DC systems. Fundamentals of switching over-voltages, D. V. on A. C. sides and on D.C. side, Surge-arresters protection scheme, insulation coordination and protection margin. Prof. P.S.Manware Section : A Semester : VIII Prof. M.Ahmad Section : B Semester : VIII Dr.S.B.Bodkhe HoD(EE)