420-4025/01 – Modeling of Electrical Power Systems I (MSS I)
| Gurantor department | Department of Electrical Engineering | Credits | 5 |
| Subject guarantor | Ing. Petr Orság, Ph.D. | Subject version guarantor | Ing. Petr Orság, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2016/2017 | Year of cancellation | 2021/2022 |
| Intended for the faculties | FEI | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
The aim of this subject is to acquaint students with basic kind of power system studies, the way of data mining and documentation, the simulation method and the way of reporting the results with clearly defined executive summary that assesses the presented outcomes.
Teaching methods
Lectures
Tutorials
Project work
Summary
The computer aided power system studies have significantly developed within last 30 years. Nowadays, these studies have become the common and indispensable part of large power system projects in electrical engineering. These studies are able to analyze the behavior under normal and contingency conditions and assess the dynamic stability of electric power systems, they are further able to optimize and design the protection device coordination, cable cross sections, switching and protective devices and other equipment which is a part of electrical installation.
Compulsory literature:
1. IEEE 399/1997 – IEEE Recommended Practice for Industrial and Commercial Power System Analysis
2. IEEE 141-1993 – IEEE Recommended Practice for Electric Power Distribution for Industrial Plants
3. ABS – rules for building and classing, steel vessels, 2012. Source: www.eagle.org
4. NFPA 070E Standard for Electrical Safety in the Workplace
5. IEEE 1854 IEEE Guide for Performing Arc-Flash Hazard Calculations
Recommended literature:
HD 60364 Low voltage electrical installations
HD 637 Power installations exceeding 1 kV a.c.
Way of continuous check of knowledge in the course of semester
1 x written test (setting up the load list) - 10 points
1 x PC modeling of chosen power systems - 10 points
1 x individual project - simulation of given power system and output report completion - 15 points
E-learning
1. Dudek, J. Projekce a konstrukce vyhrazených technických zařízení elektro I., Modelování a simulace silnoproudých systémů. Učební text, 204 stran, VŠB-TU Ostrava, 2014, ISBN 978-80-248-3535-8
2. ČSN EN 60909-0: Zkratové proudy v trojfázových střídavých soustavách - Část 0: Výpočet proudů
3. ČSN IEC 909-2: Data pro výpočty zkratových proudů v souladu s IEC 909: 1988
4. ČSN 34 1610: Elektrotechnické předpisy ČSN. Elektrický silnoproudý rozvod v průmyslových provozovnách
5. ČSN 33 2000-4-43 ed. 2: Elektrické instalace nízkého napětí - Část 4-43: Bezpečnost - Ochrana před nadproudy
6. IEEE 399/1997 – IEEE Recommended Practice for Industrial and Commercial Power System Analysis
7. IEEE 141-1993 – IEEE Recommended Practice for Electric Power Distribution for Industrial Plants
8. ABS – rules for building and classing, steel vessels, 2012. Zdroj: www.eagle.org
9. NFPA 070E Standard for Electrical Safety in the Workplace
10. IEEE 1854 IEEE Guide for Performing Arc-Flash Hazard Calculations
Other requirements
Student is supposed to pass the following subject prior to this one
- Basic rules in electrical engineering
- Electrical machines (knowledge of electrical machines principles)
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
List of lectures:
1. Electrical power system distribution in industrial workshops – Examples of designing the electrical installations, assessment of simultaneity coefficients, installed power, simultaneous power demand. Design and installation of electrical power installations according to ČSN 34 1610, installed power and simultaneity coefficients for various types of installation, importance levels of electric power supply. Documentation of installed power and simultaneity coefficient in power system studies.
2. Industrial power systems topology, definition and difference between isle (e.g. offshore) mode and on-grid (e.g. onshore) mode supplied from public utility grid. The ways and requirements for continuity of power supply.
3. The aim and creation of Load List, definition of investigated scenarios for power systems working in isle mode, and power systems supplied from public utility networks, necessary documents submitted by contractor. Assessment of preliminary results and its influence for further design stage and succeeding studies.
4. The examples of supply line dimensioning according to HD 60364-5-52 ed.2, temperature rise calculation during steady state, overload, and verification of temperature rise during and after short circuit.
5. The substitute circuit scheme of simulated electrical equipment – cables, transformers, induction machines, synchronous machines, passive loads, semiconductor converters, network feeders.
6. The way of numerical solution of simple radial network – the calculation of voltage drops, power losses, power demand with respect to simultaneity coefficient. The sources of typical and particular data values for substitute circuit schemes.
7. Calculation of short-circuit currents according to EN 60909-0, calculation method, definition of quantities, wavefornd of short-circuit current. The data sources of typical and particular data form substitute circuit schemes (short-circuit impedances).
8. Basic studies of electrical power systems – Load Flow Study, the types of active and passive loads, setting up the simulation parameters. Definition of other studies coming out from the Load Flow model.
9. Basic studies of electrical power systems – Load Flow Study, building up the model, input data representing all particular equipments, simulated LF scenarios, aim of studies and typical presentation of simulated data.
10. Basic studies of electrical power systems – Short-Circuit Study, the types of active and passive loads, setting up the simulation parameters. The feedback from Load Flow and Short-Circuit results for the design stage of electrical system design.
11. Basic studies of electrical power systems – Short-Circuit study, building up the model, input data representing all particular equipments, simulated LF scenarios, aim of studies and typical presentation of simulated data.
12. Life cycle stage of electrical power systems studies – presentation and synthesis of input data for numerical simulation, necessary documents, SoW (Scope of Work), revision and document revision in practical design stage. The way of submitting documents and information between originator and contractor. Formatting and structure of power system studies reports. Definition of FEED studies and studies for verification of the design.
13. Arc-Flash Study – aim and sense of the studies, the link between arc-flash studies and short-circuit studies. Analysis of arc-flashes acc. to IEEE 1587, the choice of personal protective equipment (PPE) acc. to NFPA 070E.
14. The overview of commercial and free software tools. Its use for specific electric power systems design, GUI, user comfort. .
List of Excercies:
1. Software EMTP-ATP – graphical preprocessor ATP Draw.
2. Software EMTP-ATP – setting up parameters for various types of simulations, solving the convergence problems, output report format, graphical postprocessor PlotXY.
3. Practical set-up of Load List – output report format, way of results presentation, and main conclusions.
4. Temperature rise of conductors and cables – calculation of steady state temperature rise, practical assessment of current carrying capability for various reference cable layout and for groups of several circuits. Temperature rise assessment during overload, design cable cross section with regards to short circuit current thermal effect.
5. Setting up the input data for numerical simulations - data sources, output report generation, typical value, catalogue datasheet and data obtained from factory acceptance tests (FATs)
6. Numerical calculation of voltage drops and power losses - dimensioning of supply lines, transformers, input data
7. Numerical calculation of Short-Circuit currents
8. Written test No. 1, assignment of semestral project
9. Building the numerical model for Load Flow analysis
10. Load Flow analysis – simulation parameters, simulation run, data mining from output simulation file, simulation accuracy, way of presentation and output report completion.
11. Building the simulation model for Short-Circuit analysis
12. Short-Circuit analysis – simulation parameters, simulation run, data mining from output simulation file, simulation accuracy, way of presentation and output report completion. The difference between EMTP-ARP and Short-Circuit studies in commercial software programs.
13. Written test No.2
14. Defense of individual project, credit
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction