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MEHRAN UNIVERSITY OF ENGINEERING AND TECHNOLOGY, JAMSHORO DEPARTMENT OF ELECTRICAL ENGINEERING Title of Subject Discipline Term Effective Pre-requisites Marks Assessment : : : : : : : Credit hours Minim Contact hrs : : Aims : Objectives : Power Electronics (EL-421) B.E. Electrical Engineering 8th Seemster 13EL-Batch and onwards Electronic Devices & Circuits Theory : (100) Sessional work : 20 % Mid Semester Exam: 20 % Final Semester Exam: 60% 03 42 Co-requisite: Practical : (50) Sessional work : 40 % Semester Lab Exam: 60% 01 42 After completion of the course the student will be able to: To provide adequate Knowledge and clear understanding about the construction, principle of operation, characteristics, protection, problems and applications of various Power electronic Semiconductor devices and their Control Circuits. Upon successful Completion of this course the student will be able to: Describe principle of operation, construction, characteristics and applications of various Power Semi Conductor Devices. Describe Ratings, protection, Cooling, Commutation techniques, firing circuits, Series and Parallel operation of Thyristors. Describe applications of thyristors as static switches, voltage controllers, Converters, Inverters, Choppers and Cyclo converters. Understand how to start and control speed of various types of Electric motors through various Power Electronic circuitries. Understand clearly the problems and remedial methods of the generation of harmonics caused due to Power Electronic Circuitries in Systems networks. Contents : INTRODUCTION: Recent advancement in Power Electronics and its Application, Power diodes, Free wheeling diodes Diodes with RC and RL , LC and RLC loads. Types of Power transistors and their Characterstics. THE THYRISTOR: Principle of operation, characteristics, two transistor model of SCR, Thyrister types, Ratings, Protection and cooling, Thyristor Turn-on and Turn off , Commutation techniques, Series and Parallel operation of thyristors, Thyristor firing circuits. STATIC SWITCHESS: Single phase and three phase A.C switches, Three phase reversing switches, AC switches for bus transfer, DC switches, Solid state relays, Design of static switches. THYRISTOR CONVERTERS: AC voltage controllers, controlled rectifiers, Inverters, DC link converters, DC Choppers, Cyclo converters. SOLID STATE DRIVES: Thyristor starting and speed control of Induction motors, Direct current motors and synchronous motors, Brushless excitation system. APPLICATIONS AND PROBLEMS: Applications of power electronics, Harmonics generation types and their problems. Analysis of harmonics and their remedial methods. Note : Practical/Simulation work is based on the above theoretical course (Latest available editions) M.H. Rashid, Power Electronics Circuits, Devices and Applications, Latest Edition P.S. Bimbhra, Power Electronics, Latest Edition C. W. Lander, "Power Electronics", McGraw Hill, Latest Edition. Approval: : Board of Studies, EL. Engg Board of Faculty of EECE Academic Council Books Recommended Res. No. 2.2 Res. No. 7.3 Res. No. 85.10 Dated : 29-05-2013 Dated : 29-12-2014 Dated : 07-07-2015 MEHRAN UNIVERSITY OF ENGINEERING AND TECHNOLOGY, JAMSHORO DEPARTMENT OF ELECTRICAL ENGINEERING Title of Subject Discipline Term Effective Pre-requisites Marks Assessment : : : : : : : Credit hours Minim contact hrs : : Aims : Objectives : : Contents Power System Stability and Control (EL-422) B.E. Electrical Engineering 8th Semester 13EL-Batch and onwards Power System Analysis Theory: 100 Sessional work : 20 % Mid Semester Exam: 20 % Final Semester Exam: 60% 03 42 Co-requisite: Practical : 50 Sessional work : 40 % Semester Lab Exam: 60% 01 42 To develop the skills of student and provide adequate knowledge about the concepts of automated power system control. The course will equip student with the understanding of SCADA and various other application functions used in the modern power system. Upon successful Completion of this course the student will be able to: Describe the objectives of power system control and various power system operation modes Describe SCADA and its functions Explain various control structures and their families Discuss the organization of power system operations Elaborate the technical realization of power system control and system maintenance Provide the application of various power system function POWER SYSTEM STABILITY: Definition and classification of power system stability. Steady state and Transient Stability. The swing equation. Equal area criterion: application to a sudden increase in power input and application to a short circuit fault. Critical fault clearing time. INTRODUCTION TO POWER SYSTEM CONTROL: Need and objective of power system control. Automated power system control concept, Power system operation modes. SCADA: Supervisory control, Variables and time intervals for data acquisition, Monitoring and event processing, Control functions, Disturbance data collection and analysis, Human-Machine communication methods POWER SYSTEM CONTROL STRUCTURES: Control Structures, Sub system: Local system, communication system, central system, System classes, Remote Terminal Units (RTU). SYSTEM INTERACTION: Operation organization, Allocation of functions in hierarchical control systems, Control system configurations APPLICATION FUNCTIONS: Active power and frequency control, Reactive power and voltage control, Economic dispatch, Note : Practical/Simulation work is based on the above theoretical course Books Recommended (Latest available editions) : Trosten Cegrel, Power System Control Technology, Publisher Prentice/Hall International, Latest Edition Allen J. Wood , Bruce f. Woolenbarg, Power Generation , Operation and Control, Latest Edition Approval: : Board of Studies, EL. Engg Board of Faculty of EECE Academic Council Res. No. 2.2 Res. No. 7.3 Res. No. 85.10 Dated : 29-05-2013 Dated : 29-12-2014 Dated : 07-07-2015 MEHRAN UNIVERSITY OF ENGINEERING AND TECHNOLOGY, JAMSHORO DEPARTMENT OF ELECTRICAL ENGINEERING Title of Subject Discipline Term Effective Pre-requisites Marks Assessment : : : : : : : Credit hours Minim Contact hrs : : Aims Objectives Contents Power System Protection (EL-423) B.E. Electrical Engineering 8th Semester 13EL-Batch and onwards Power System Analysis, Electrical Power Transmission Co- requisite: Theory : (100) Practical : (50) Sessional work : 20 % Sessional work : 40 % Mid Semester Exam: 20 % Semester Lab Exam: 60% Final Semester Exam: 60% 03 01 42 42 : After completion of the course the student will be able to: Learn to represent the power system components into their equivalent parameters. Understand various causes of overvoltage resulting in insulation failure and principles of protection against over voltages. Learn about very basic protection equipment, from the fuses to very complex and robust circuit breakers, their construction and their working principle, their types and their ratings etc. : The objective of the course is to give the student the knowledge of construction, principle of operation, and ratings of various protective equipment used in power system along with clear understanding of various protection schemes for major components of power system. : OVERVOLTAGES: Causes of over voltages. Propagation of surges. Determination of system voltages produced by travelling wave surges. Insulation co-ordination. Protection against lightning. Surge arresters and diverters. FUSES: Types of fuses. Selection of fuse material. Fuse performance. Main features of H.R.C fuses. Selection and co-ordination of fuses. SHORT CIRCUIT CALCULATION AND REACTORS: Short circuit calculation. Purpose reactors. Types of reactors. Location of reactors. Selection of reactors. SWITCHGEAR: Arc phenomenon, initiation and extinction of arc. Arc recovery voltage and restriking voltage. Classification of circuit breakers: oil circuit breakers, Air blast circuit breakers, SF6 circuit breakers, Vacuum circuit breakers. Metal clad switch gears. H.V. load breaking switches. RELAYS: Protection relays. Fundamental requirement of protective relaying. Operation and principle of Electromagnetic, Electromechanical and Static Relays. Microprocessor controlled relaying system. PROTECTION SCHEMES: Overcurrent, ground fault, Differential protection. Distance protection, Unit protection schemes. Generator protection. Motor protection. Power transformer and feeder protection. Bus bar protection, Protection level versus cost Note : Practical/Simulation work is based on the above theoretical course Books Recommended (Latest available editions) Approval: : Y.G. Paithankar, S.R. Bhide, Fundamentals of Power System Protection.. PHI, Latest Edition J. Duncan Glover, Mulukutla S. Sarma, Power System Analysis and Design., Latest Edition, Brooks/Cole Badri Ram, D.N. Vishwakarma, Power System Protection and Switchgear. Tata Mc Graw – Hill, Latest Edition Power System Protection Vol. 1,2,3, Latest Edition, The Electricity Council, Latest Edition C. L Wadhwa, Electrical Power Systems, Latest Edition : Board of Studies, EL. Engg Board of Faculty of EECE Academic Council Res. No. 2.2 Res. No. 7.3 Res. No. 85.10 Dated : 29-05-2013 Dated : 29-12-2014 Dated : 07-07-2015