Control, Protection and Automation of Power Supply and Distribution Networks
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Published: 28 October 2016
Programme Summary
Major: 13.04.02 Power Industry and Electrical Engineering
Specialisation: Power Supply
Degree: Master
Course units:
Unit 1. Management, monitoring and alarm systems of power plants and station
Unit 2. General principles of power plant and power station management
Unit 3. Secondary circuits
Unit 4. Building control and alarm circuits for high-voltage switches
Unit 5. Secondary protection devices
Unit 6. Transducers, current and voltage transformers
Unit 7. Control current. Control current sources.
Unit 8. Microprocessor-based protection systems
Unit 9. A microprocessor-based protection devices diagram. Hardware elements of microprocessor-based relay protection devices.
Unit 10. Majors manufacturers of microprocessor-based protection devices. Classification of relay protection device functions.
Unit 11. Protection of 6-35 kV lines
Unit 12. Protection of 110-220 kV lines
Unit 13. High-frequency protection
Unit 14. Protection of motors with rated voltages above 1 kV
Unit 15. Protection of power transformers
Unit 16. Protection of furnace transformers and converter transformers
Unit 17. Protection of power lines with voltages below 1 kV
Unit 18. Linear and emergency control devices in electric power systems
Unit 19. Discussion of reports
Coursecontents:
The course is about protection and automation devices used in 0.4 to 220 kV networks of industrial-scale power supply systems and covers both electromechanical and microprocessor-based protection devices.
Activities:
- Teacher-led group activities in a classroom;
- Extracurricular self-study of the teacher’s assignments and tasks, including the use of educational facilities (obligatory);
- Teacher-led laboratory classes;
- Office-hours.
Total hours – 180
Total points – 5
Classroom hours – 65
Unsupervised hours – 79
Laboratory work – 26 hours
Term paper – 30 hours
Midterm assessment – Examination
Modelling of Electrical Power Systems
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Published: 28 October 2016
Programme Summary
Major: 13.04.02 Power Industry and Electrical Engineering
Specialisation: Power Supply
Degree: Master
Course units:
Unit 1. Basics of modelling theory. The concept of model and classification
Unit 2. Modelling of complex electric power systems for ferrous metallurgy
Unit 3. Basics of modelling in Matlab by Mathworks with the Simulink and National Instruments Multisim applications
Unit 4. Math modelling of the electric loop of an electric arc furnace
Unit 5. Math modelling of the ‘Thyristor converter/Separately excited DC motor’ system
Unit 6. Math modelling of a static VAR compensator for non-linear and abruptly variable load (EAF and TC-M)
Unit 7. Modelling of high-voltage synchronous motor
Unit 8. Modelling of synchronous generator
Unit 9. Modelling of the ‘Frequency converter/AC motor’ system
Course contents:
Unit 1. Basics of modelling theory. The concept of model and classification.
The concept of modelling. Classification of models by presentation (full-scale, material or mathematical), by level of accuracy (complete, incomplete, approximate), by the time factor (static and dynamic). Mathematical modelling. Requirements to math models. Similarity and adequacy. The concept of experiment and classification.
Unit 2. Modelling of complex electric power systems for ferrous metallurgy
Complex power system. Types of power systems utilized at metallurgical sites (superpower electric arc furnaces with static VAR compensators, thyristor motor drives of hot and cold rolling mills, high-voltage synchronous motors of oxygen plants and the roughing stands of a hot mill, synchronous generators of in-house power plants; advanced high-power lines built with AC motors and frequency converters of various make) and their features. Purpose and problems of modelling of the above objects.
Unit 3. Basics of modelling in Matlab by Mathworks with the Simulink and National Instruments Multisim applications
Basics of Matlab by Mathworks (the graphic interface; basic operations with data; basics of the embedded programming language; basic Simulink libraries; dealing with the main blocks of the SimPowerSystem library; model calculation techniques; presentation of math modelling outcomes). Basics of National Instruments Multisim (the graphic interface; dealing with the main blocks of electrical elements; presentation of math modelling outcomes).
Unit 4. Math modelling of the electric loop of an electric arc furnace
Math modelling of the electric loop of an electric arc furnace (EAF). Simplified EAF model with the electric arc presented in the form of variable active resistance. Single-phase and three-phase EAF models with the electric arc presented in the form of back EMF. Single-phase and three-phase EAF models with the use of the Cassie arc equation. Comparison of the EAF electrical characteristics obtained with the above models. Assessment of the EAF current harmonic content. Assessment of the AEF impact on the supply mains through modeling.
Unit 5. Math modelling of the ‘Thyristor converter/Separately excited DC motor’ system
Modeling of back-EMF 6- and 12-pulse rectifiers with current control. Identification of key energy and electrical parameters of a thyristor converter, such as overlap angle, delay angle, average rectified current and voltage. Calculation of the higher current harmonics produced by a thyristor converter.
Unit 6. Math modelling of a static VAR compensator for non-linear and abruptly variable load (EAF and TC-M)
Math model of filter compensation networks. Obtaining the resulting frequency response of the supply mains and the higher harmonics filters. Math model of a thyristor-reactor group (TRG). Implementing a TRG control system. Studying the reactive power compensation for different modes of EAF and TC-M.
Unit 7. Modelling of high-voltage synchronous motor
Building a synchronous motor (SM) model based on the Park-Gorev equations. Matrix model of a synchronous motor. SM model built with the SimPowerSystem library blocks. Designing an automatic excitation controller to ensure a stable dynamic response of a SM in case of solid state load surges or main power dips etc. Exploring a SM in transition modes.
Unit 8. Modelling of synchronous generator
Building a synchronous generator (SG) model based on the Park-Gorev equations. Designing an automatic excitation controller. Exploring a SG in transition modes.
Unit 9. Modelling of the ‘Frequency converter/AC motor’ system
Math model of a frequency converter with a DC link. Math model of a converter with an active front end rectifier. Building AC motor u/f and vector control systems. Studying the pulse width modulation algorithms. Exploring the energy and power characteristics of a frequency converter.
Activities:
- Teacher-led group activities in a classroom;
- Extracurricular self-study of the teacher’s assignments and tasks, including the use of educational facilities (obligatory);
- Office-hours.
Total hours – 108
Total points – 3
Classroom hours – 15
Unsupervised hours – 93
Midterm assessment – Pass/fail examination