Fundamentals of Relay Protection Technology
Description: The discipline includes the use of special protective devices and complexes for the safe, trouble-free creation, transmission and distribution of electricity in the electric power system.
Amount of credits: 5
Пререквизиты:
- Transient Processes
Course Workload:
| Types of classes | hours |
|---|---|
| Lectures | 15 |
| Practical works | 15 |
| Laboratory works | 15 |
| 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: Profiling disciplines
Goal
- The aim is to study, both from the qualitative and quantitative side, the principles of construction and operation of individual devices and protections in general, methods for calculating the settings of these protections. This course, based on courses in physics, higher mathematics, transients in the electric power industry, theoretical foundations of electrical engineering, etc., contains a general theory of the construction of various types of protections and engineering methods for their calculation. It is of exceptional importance for the formation of the scientific outlook of specialists in the electric power industry.
Objective
- The task of studying the course is to master modern methods of analysis and calculation of parameters of relay protection and automation devices for, based on the use of various signs of accidents in the power system, knowledge of which is necessary for understanding and creative solutions to engineering problems of the specialty being studied.
Learning outcome: knowledge and understanding
- Possess basic knowledge and concepts of relay protection and automation, test methods, adjustment and repair of protective electrical equipment
Learning outcome: applying knowledge and understanding
- Be able to carry out calculations according to standard methods and design individual parts and relay protection units
Learning outcome: formation of judgments
- Make an informed choice of relay protection circuits and equipment
Learning outcome: communicative abilities
- Be able to solve the tasks of providing relay protection in a team
Learning outcome: learning skills or learning abilities
- Be ready to constantly master new knowledge in the field of relay protection, analyze the current state of relay protection technology
Teaching methods
When conducting training sessions, the use of the following educational technologies is envisaged: - In the conditions of credit technology of education, classes should be conducted mainly in active and creative forms. Among the effective pedagogical methods and technologies that contribute to the involvement of students in the search and management of knowledge, the acquisition of experience in independent problem solving, we should highlight: - technology of problem-based 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 method (situation analysis); - gaming technologies, in which students participate in business, role-playing, simulation games; - information and communication (including distance learning) 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 | Laboratory work 1 "Study of the operation of the MTZ and APV circuits of the power line" | 0-100 |
| Oral interview. Introduction. General concepts of relay protection and its purpose. Requirements for relay protection. Types of short circuits and their causes | ||
| IWS. Calculation of short-circuit currents in the power system | ||
| Laboratory work2 "Testing of electromagnetic time relays" | ||
| Oral interview. Current transformers in relay protection circuits | ||
| IWS. Calculation of secondary loads of current transformers | ||
| Laboratory work 3 "Maximum current protection" | ||
| Oral interview.Voltage transformers.Protection of networks with isolated neutral from single-phase earth faults | ||
| IWS. Current cut-off | ||
| Testing | ||
| Lecture notes | ||
| 2 rating | Laboratory work 4 "Calculation, adjustment and testing of directional current protection against phase-to-phase short circuits" | 0-100 |
| Oral interview.Maximum current protection with voltage blocking (start-up) | ||
| IWS. Calculation of maximum current protections | ||
| Laboratory work 5 "Zero sequence current transformers" | ||
| Oral interview. Directional maximum current protection | ||
| IWS. Calculation of transverse differential current protections of parallel lines | ||
| Laboratory work 6 "Parameterization of the SIPROTEC relay using digital means" | ||
| Oral interview. Differential protections. Longitudinal differential protection | ||
| IWS. Calculation of step-by-step current protections of the zero sequence | ||
| Laboratory work 7 "Protection of electric motors by means of digital relays" | ||
| Oral interview.Transverse differential protections | ||
| IWS. Calculation of longitudinal differential current protections of parallel lines | ||
| Testing | ||
| Lecture notes | ||
| 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
- Current transformers in relay protection circuits
- Voltage Transformers
- Protection of networks with isolated neutral from single-phase earth faults
- Current cut-off
- Maximum current protection with voltage blocking (start-up)
- Directional maximum current protection
- Differential protections
- Transverse differential protections
Key reading
- 1. Правила устройств электроустановок.-: Астана. 2015. – 607 с. 2. Федосеев А.М. Релейная защита электрических систем. - М.: Энергия, 2013 – 520 с. 3. Федосеев А.М. Основы релейной защиты. - М., 2015 – 423 с. 4. Авербух А.М.. Релейная защита в задачах с решениями и примерами.- 2012– 400 с. 5. Руководящие указания по релейной защите.- М.:2011 – 36 с. 6. Шабад М.А. . Расчеты релейной защиты. -М.: Энергия, 2015 – 243 с. 7. Беркович М.А., Семенов В.А. Основы техники и эксплуатации релейной защиты. - М.: Энергия, 2012 – 305 с
