Power Supply
Description: In this discipline, students study the physical foundations of the formation of power consumption modes, the development of basic methods for calculating the integral characteristics of modes and determining design loads, indicators of power supply quality, the study of methods for achieving a given level of reliability of electrical equipment and power supply systems.
Amount of credits: 5
Пререквизиты:
- Theoretical Background of Electrotechnics
Course Workload:
| Types of classes | hours |
|---|---|
| Lectures | 15 |
| Practical works | 30 |
| Laboratory works | |
| SAWTG (Student Autonomous Work under Teacher Guidance) | 30 |
| SAW (Student autonomous work) | 75 |
| Form of final control | Exam |
| Final assessment method | exam |
Component: Component by selection
Cycle: Base disciplines
Goal
- The purpose of studying the discipline is to gain knowledge about the construction and operating modes of power supply systems of industrial enterprises.
Objective
- Practical application of the already acquired knowledge, to be able to apply them creatively for the purposes of practical design, taking into account regulatory, technical and reference materials.
Learning outcome: knowledge and understanding
- Methods for determining electrical quantities, methods for calculating electrical loads, power quality indicators
Learning outcome: applying knowledge and understanding
- After studying this discipline, students should gain knowledge of the main sections of the studied course, learn how to apply them to practical design, analysis of the state of existing and newly developed electric power systems.
Learning outcome: formation of judgments
- After studying this discipline, students should have: A clear idea of the power supply of facilities, industrial enterprises.
Learning outcome: communicative abilities
- Selection of the optimal power supply option, development and execution of design and technical documentation
Learning outcome: learning skills or learning abilities
- Skills of practical application of the acquired knowledge, the use of methods of analysis of power supply systems, the use of modern computational design tools.
Teaching methods
In the conditions of credit technology of training, classes should be conducted mainly in active and creative forms. Among the effective pedagogical techniques and technologies that contribute to the involvement of students in the search and management of knowledge, the acquisition of experience in solving problems independently, it should be highlighted: - technology of problem- and project-oriented learning; - technologies of educational and research activities; - communication technologies (discussion, press conference, brainstorming, educational debates and other active forms and methods); - case study method (situation analysis); - game technologies in which students participate in business, role-playing, simulation games; - information and communication (including distance education) technologies.
Assessment of the student's knowledge
Teacher oversees various tasks related to ongoing assessment and determines students' current performance twice during each academic period. Ratings 1 and 2 are formulated based on the outcomes of this ongoing assessment. The student's learning achievements are assessed using a 100-point scale, and the final grades P1 and P2 are calculated as the average of their ongoing performance evaluations. The teacher evaluates the student's work throughout the academic period in alignment with the assignment submission schedule for the discipline. The assessment system may incorporate a mix of written and oral, group and individual formats.
| Period | Type of task | Total |
|---|---|---|
| 1 rating | Practical work No. 1 "Graphs of electrical loads of industrial enterprises" | 0-100 |
| Practical work No. 2 "Determination of design loads for power supply units and the shop as a whole by the method of "Ordered load diagrams" | ||
| Practical work No. 3 "Load calculation and reactive power compensation" | ||
| Practical work No. 4 "Determination of electrical loads by the method of "average power and the coefficient of the shape of load graphs", average power and deviation from the average calculated load (statistical method)" | ||
| Practical work No. 5 "Selection of protection devices (fuses and automatic machines), cross sections of wires, cables and busbars of the workshop network" | ||
| SRS No. 1"Selection of power cables and switching equipment of high and low voltage" | ||
| SRS No. 2 "Drawing up a replacement circuit for calculating short-circuit currents." | ||
| SRS No. 3 "Selection of the scheme of the supply distribution network of the workshop." | ||
| Boundary control No. 1 | ||
| 2 rating | Practical work No. 6 "Checking the selected automata and fuses for breaking capacity and sensitivity" | 0-100 |
| Practical work No. 7 "Operating modes of the simulated power supply system of industrial enterprises" | ||
| Practical work No. 8 "Determination of the load center of the enterprise and the choice of shop transformers" | ||
| Practical work No. 9 "Power supply schemes for industrial enterprises with a voltage above 1 kV" | ||
| Practical work No. 10 "Determination of power and electricity losses. Technical and economic calculation. Reactive power compensation" | ||
| SRS No. 4 "Designs and applications of switchgear and complete equipment up to and above 1 kV." | ||
| SRS No. 5 "Modern requirements for electricity accounting" | ||
| SRS No. 6 "Protective measures of electrical safety." | ||
| Boundary control No. 2 | ||
| Total control | Exam | 0-100 |
The evaluating policy of learning outcomes by work type
| Type of task | 90-100 | 70-89 | 50-69 | 0-49 |
|---|---|---|---|---|
| Excellent | Good | Satisfactory | Unsatisfactory |
Evaluation form
The student's final grade in the course is calculated on a 100 point grading scale, it includes:
- 40% of the examination result;
- 60% of current control result.
The final grade is calculated by the formula:
| FG = 0,6 | MT1+MT2 | +0,4E |
| 2 |
Where Midterm 1, Midterm 2are digital equivalents of the grades of Midterm 1 and 2;
E is a digital equivalent of the exam grade.
Final alphabetical grade and its equivalent in points:
The letter grading system for students' academic achievements, corresponding to the numerical equivalent on a four-point scale:
| Alphabetical grade | Numerical value | Points (%) | Traditional grade |
|---|---|---|---|
| A | 4.0 | 95-100 | Excellent |
| A- | 3.67 | 90-94 | |
| B+ | 3.33 | 85-89 | Good |
| B | 3.0 | 80-84 | |
| B- | 2.67 | 75-79 | |
| C+ | 2.33 | 70-74 | |
| C | 2.0 | 65-69 | Satisfactory |
| C- | 1.67 | 60-64 | |
| D+ | 1.33 | 55-59 | |
| D | 1.0 | 50-54 | |
| FX | 0.5 | 25-49 | Unsatisfactory |
| F | 0 | 0-24 |
Topics of lectures
- Introduction
- Characteristics of industrial electricity consumers
- Electrical loads of industrial enterprises
- The main indicators (coefficients) for determining electrical loads
- Determination of electrical loads by various methods
- Reactive power compensation
- Design of reactive power compensation
- Distribution of electricity at a voltage of up to 1 kV
- Protective equipment for networks up to 1000 V
- In-plant distribution of electric energy on the territory of the enterprise with a voltage of 6-10 kV
- Substations of industrial enterprises with a voltage above 1 kV (GPP, PGV)
- Overhead and cable lines and current lines with a voltage above 1 kV
- Equipment of substation switchgears with voltage above 1 kV
- The quality of electrical energy
- Electricity accounting
Key reading
- 1. Kudrin B.I. Power supply of industrial enterprises: Textbook for higher educational institutions. – M.: IntermetEngineering, 2015. – 672 p.
- 2. Power supply and electrical equipment of shops / V.I. Grigoriev, E.A. Kireeva, V.A. Mironov, A.N. Gokhonelidze. – M.: Energoatomizdat, 2013. – 246 p.
- 3. Rules for the technical operation of consumer electrical installations. – M.: Izd-voNTSENAS, 2014. – 304 p.
- 4. Guidelines for the calculation of short-circuit currents and the choice of electrical equipment. -M.: PTSENAS, 2017. - 152 p.
- 5."Теоретические основы электротехники. Линейные электрические цепи: Учебное пособие" / Атабеков Г.И. 2019.
- 6."Электротехника (лабораторно-практические работы)" / Алиференко В.В., Яшный В.Г. 2018.
- 7."Основы электротехники и электроснабжения предприятий лесного комплекса. Основы электротехники. Учебник" / Кольниченко Г.И., Тарлаков Я.В., Сиротов А.В, Кравченко И.Н. 2019.
- 8."Электротехника" (12-е изд.) / Бутырин П.А. 2018
- 9. "Электротехника и электроника в экспериментах и упражнениях: Практикум на ElectronicsWorkbench. В 2-х томах" / Под ред. Д.И. Панфилова - М.: ДОДЭКА, 2018.
Further reading
- 5. Zhelezko Yu.S. Calculation, analysis and regulation of electricity losses in electrical networks. / Yu.S. Zhelezko, A.V. Artemiev, O.D. Savchenko. - M.: Publishing House of NTsENAS, 2017. - 278 p.
- 6. Kireeva E. A. Power supply and electrical equipment of workshops of industrial enterprises: study guide / E. A. Kireeva. – M.: KNORUS, 2011. – 368 p.
- 7. Korobov GV Power supply. Course design: Textbook / Under the general. ed. G. V. Korobova. 2nd ed., corrected. Idop. - St. Petersburg: Publishing house "Lan", 2019. - 192 p.
