Electric Power Lines and Systems
Description: The course "Electrical networks and systems" occupies the main place among the special disciplines that determine the theoretical level of professional training of bachelors of electric power engineering. The discipline includes concepts and calculations of transmission and distribution of electricity, solving problems of transmission and distribution of electricity
Amount of credits: 5
Пререквизиты:
- Mathematical Problems and Computer Modeling in the Electric Power Industry
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 | a written exam |
Component: University component
Cycle: Base disciplines
Goal
- Formation of knowledge in the field of theory of calculations and analysis of modes of electrical systems and networks, ensuring efficiency, reliability and quality of electricity during their design and operation
Objective
- To teach students to draw up replacement schemes, determine their parameters and calculate the modes of electrical networks and systems; to teach the basics of designing electrical networks and systems and methods to improve their efficiency, reliability and quality of electricity; to familiarize with the physical essence of the phenomena accompanying the process of production, distribution and consumption of electricity; to familiarize with the designs of elements of power transmission lines.
Learning outcome: knowledge and understanding
- Know the basic laws of operation and design of electrical networks and systems
Learning outcome: applying knowledge and understanding
- Be able to carry out calculations according to standard methods and design individual sections and nodes of electrical networks and systems using standard design automation tools in accordance with the terms of reference
Learning outcome: formation of judgments
- be able to make a reasonable selection of equipment and modes of electrical networks and systems based on technical and economic calculations
Learning outcome: communicative abilities
- be able to perform complex tasks on the study of electrical networks and systems in a team
Learning outcome: learning skills or learning abilities
- be ready to master new knowledge of designing and optimizing the operation of electrical networks and systems
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 | IWST. Determination of parameters of power line replacement circuits. | 0-100 |
| Colloquium 1 | ||
| IWST. Determination of parameters of transformer and autotransformer replacement circuits | ||
| IWS 1. Electrical network. Classification of electrical networks | ||
| Settlement work. Electrical calculation of RES together with transformers and autotransformers | ||
| Colloquium 2 | ||
| Boundary control 1 | ||
| 2 rating | IWST. Determination of power and energy losses in network elements. | 0-100 |
| Colloquium 2 | ||
| Settlement work. Calculation of open MES by permissible voltage loss with one or more loads at the end | ||
| IWS2 | ||
| IWST. Determination of conductor cross sections by permissible voltage loss | ||
| Colloquium 4 | ||
| Boundary control 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
- Electrical network, as part of an electrical system
- Classification of electrical networks
- Construction of power lines
- Replacement schemes and parameters of elements of electrical networks
- Parameters of the transformer replacement circuit
- Characteristics of the main electrical receivers
- Loss of power and electricity in the elements of the network
- Vector diagrams of power lines
- Calculation of electrical network modes
- Calculation of local networks for voltage loss
- Calculation of wire cross sections by permissible voltage loss
- Calculation of modes of simple closed networks
- Power balance in the power system
- Reactive power in the power system
- Methods of voltage regulation
Key reading
- 1. Idelchik, V.I. Electrical systems and networks: Textbook for universities. / V.I. Idelchik. - M.: Alliance, 2016. - 592 p. 2. Khrushchev, Yu.V. Electric power systems and networks. electromechanical transients: A textbook for applied bachelor's degree / Yu.V. Khrushchev, K.I. Zapodovnikov, A.Yu. Yushkov. - Lyubertsy: Yurayt, 2016. - 153 p. 3. Klimova, G.N. Electric power systems and networks. Energy saving: A textbook for applied bachelor's degree / G.N. Klimova. - Lyubertsy: Yurayt, 2016. - 179 p. 4. Gerasimenko, A.A. Electric power systems and networks: calculations, analysis, optimization of operating modes and design solutions of electric networks: Textbook / A.A. Gerasimenko, V.T. Fedin. - Ph/D: Phoenix, 2016. - 48 p. 5 Lykin A.V. Electrical systems and networks : textbook.manual / A.V.Lykin . - Novosibirsk : Publishing House of NSTU, 2019. - 247 p.
Further reading
- 1 Fundamentals of modern energy in 2 volumes : Textbook : rec. Min. mod. RF :T 2. Modern electric power engineering/ ed. by E.V. Ametistov. – M.: Izdat. MEI House, 2010. – 632 p. 2 Kuzhekov S.L. Practical guide to electrical networks and electrical equipment/ S. L. Kuzhekov, S. V. Goncharov. -3rd ed.. - Rostov n/A: Phoenix, 2011. -493 p. 3 Pospelov G.E., Fedin V.T., Lychev V.P. Electrical systems and networks. Technoprint Publishing House. 2012 4 Gerasimenko A.A. transmission and distribution of electrical energy. Technoprint Publishing House. 2009
