420-4015/01 – Modeling of Electrical Power Systems II (MSS II)
| 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 | summer |
| | 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 advanced commonly used types 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 subject directly follows the lessons taken in the subject Modeling of electrical power systems I. 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. Zdroj: www.eagle.org
4.IEEE493/2007 Design of Reliable Industrial and Commercial Power Systems
Recommended 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. Zdroj: www.eagle.org
4.IEEE493/2007 Design of Reliable Industrial and Commercial Power Systems
Way of continuous check of knowledge in the course of semester
Completion and submission of individual project, assessed max. 15 points.
Calculation/modeling of chosen power systems - written/simulated test max. 2x10 points.
Credit part max. 35 points. The credit part is considered to be passed successfully by achieving min. 21 points
E-learning
Other requirements
Student shall pass the following subjects
- Basic rules in electrical engineering
- Electrical machines
- Modeling of industrial power systems I.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
List of lectures
1. Introduction of Dynamic stability studies of power systems working in off-grid (isle) mode. Failure modes with potential consequences to network stability, expected response of power system to failure states and fault clearance. Blackout and brownout in power systems.
2. Operation of synchronous machines operating in isle mode. – Ways of torque/power control for multiple generators (speed droop mode, load sharing mode), the speed governors and AVR control systems, block diagram of control systems in Laplace transform.
3. Motor Start Study – the aim of the study, building the model of simulated network, analysis method, presentation of results, output report generation. Problems related with partial motor stalling (brow condition).
4. Load shedding during faults and after fault clearance. Definition of power management system (PMS) for isle networks, typical behavior during and after defined failures.
5. Dynamic Stability Study – Simulation model setting, aim of the study, analysis method and presentation of result values, output report generation, the verification of initial design of the PMS system.
6. Harmonic analysis study – method of calculation acc. to IEC 1000-2-6, sources of disturbance, typical harmonic spectrum, obtaining the input data, simultaneity coefficients for multiple harmonic current/voltage sources according to PNE 33 3430. Voltage characteristics of electricity supplied by public electricity networks acc. to EN 50160.
7. Harmonic analysis study - building up the simulation model, setting up the simulation. Methods of analysis and presentation of output values. Harmonic analysis report completion.
8. Protection device coordination in LV supply systems: – Characteristics of protection devices, main rules for selection, installation and setting up the protective devices (TCC curves). Partial and full selectivity in LV supply systems, ways how to achieve the selectivity.
9. Dimenzování jištění v sítích vn – protection overview in MV networks. Numerical codes of protections according ANSI standard. Tripping characteristics of MV protections. The choice of appropriate device protection types according to ČSN 33 3051.
10. The assessment of ground fault currents in insulated supply systems. – Problems related with ground faults, the corresponding protection device coordination in MV supply systems, way of output report completion (Earth Fault Calculation Report).
11. The design and coordination of protection setting in MV supply systems - TCC curves, setting up and choice of appropriate protection type, protection setting tables (documentation of protection setting for particular relay). The ways of selectivity assemssment.
12. Dimensioning of CT/VT. – dimensioning of voltage transformers, current transformers for various types of protection.
13. FMEA analysis – Failure mode and effect analysis. Its use by design of critical parts of power systems.
14. Reliability and availability of industrial power systems. – Mathematical expressions for reliability, availability, maintainability and maintenance support terms, calculation methods acc to IEEE493/2007.
List of excercises:
1. Building up and verification of synchronous machine model I. –synchronous machine, AVR + GOV control blocks
2. Building up and verification of asynchronous machine model I. – verification model behavior, torque characteristics adjustment, setting up the load torque
3. Motor Start Study – simulation parameters, output data, simulation accuracy, practical output report completion
4. Setting up the network model for dynamic stability study
5. Dynamic stability study - simulation parameters, output data, simulation accuracy, practical output report completion
6. Test No. 1, assignment of individual project
7. Software Sichr for selectity and protection studies in LV supply systems
8. Software EcoDial for selectity and protection studies in LV supply systems
9. Practical assessment and protection set-up in MV supply systems. Protection device coordination (PDC) study I.
10. Practical assessment and protection set-up in MV supply systems. Protection device coordination (PDC) study II.
11. Test No. II.
12. Individual project defense, credit
Project: Numerical simulation of given power system analysis including report generation.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction