Department of Electric Power Engineering

– Themes in connection with TET4515, TET4525 and TET5505 Specialization courses

A Specializating course consists of 2 themes a 3,75 points. Institute of Electric Power Engineering gives following themes:

ELK-10 Quality of supply in electrical power systems

Supervisor: Kjell Sand

Objective: To give an introduction to the analysis of voltage quality and reliability in electrical power systems
Content: Quality of supply comprises both power system reliability and different voltage quality phenomena e.g. slow voltage variations, flicker, harmonics etc. Legislation and standards give requirements and limits for various quality of supply phenomena and quality of supply is a major decision criteria in the design of power systems. The physics of the different phenomena will be described as well as the possible problems the phenomena might give. Measurement and mitigation techniques are also covered.

ELK-11 Cost-benefit analysis in distribution network planning

Aim: To learn cost-benefit analysis (CBA) of investments, reinvestments and maintenance in distribution networks, including theory, models, tools and application with exercises.

Content: Laws and regulations regarding distribution (external conditions), planning processes/workflow, socio-economic analysis, planning criteria, use of network information system (NIS), load estimation, utilization time for electrical loads and losses, life cycle costs (LCC), cost of power losses, outage costs, optimal conductor cross-section, net present value and profitability analysis, failure models, life curves, estimation of annual failure probability and mean residual life based on technical condition, risk analyses, risk-based maintenance and renewal.

Background literature is mainly written in Norwegian.


ELK-12 Wind power in electric power systems

Supervisor: Trond Toftevaag

Objective: To give a thorough introduction to different topics related to integration of offshore and onshore wind power in electric power systems.

Content: Norway has excellent wind power resources both offshore and onshore and the course will discuss how these resources might be utilized and integrated into the energy and power system in an economic efficient, technical robust and reliable way. Different wind turbine technologies, use of power electronics, design of wind parks, grid integration and network interface and principles for control and system operation are subjects that will be studied. The differences between offshore and onshore wind power will be discussed. Further, the course will present and discuss economy and market issues related to large-scale integration of wind power.

Lectures both by guest lecturers and by my own.

Recommended previous knowledge:
The NTNU courses TET4155 Infrastrutcure for Energy Transmission and Distribution, TET4110 Electrical machines, TET4115 Power system analysis, TEP4100 Fluid Mechanics (basics) or similar


ELK-15 Hydro Power Scheduling

Supervisor: Gerard Doorman

Objective: To gain understanding of methods and tools for power production operation scheduling with focus on hydro power.

Necessary background: Subject TET4135 Planning and operation of energy systems or corresponding knowledge. Some background in operations research.

Content: The Norwegian power system is an integrated part of a common Nordic system with about 50 % hydro, close to 50 % thermal and nuclear power and an increasing share of renewable production. The Nordic system has strong interconnections with the UCTE system on the European continent. The subject deals with scheduling methods for the various operational planning phases (long, mid and short term) in this system, with focus on hydro production. An introduction is given to central scheduling models like EMPS and EOPS for the long and mid term as well as SHOP for the short term optimization problem.


ELK-16 Advanced power system analysis

Supervisor: Kjetil Uhlen and Vijay Venu Vadlamudi

Objective: In TET 4115, students were previously given exposure to the traditional methods of power flow analysis and introductory optimal power flow studies. This specialization course is primarily aimed at exploring the more advanced aspects of these topics. The goal is to provide the student with an increased scope of understanding the practical relevance of power flow analysis and its derivatives. The student is expected to develop a working knowledge of some of the crucial issues encountered in the planning and operation of power systems, by utilizing computer-aided techniques. The course will include typical lectures and elements of flipped classroom pedagogical model.

Necessary background: TET 4115, TET 4180.

Content: Selected topics within power flow and dynamic analysis, including FACTS devices and HVDC, contingency analysis, continuation power flow and voltage stability, optimal real and reactive power flow studies, and power system state estimation. 



ELK-20 Design of Power Electronic Converters 

Supervisor: Dimosthenis Peftitsis

Necessary background: TET4190 Power electronics for renewable energy or corresponding knowledge

Content: The physical construction and operation of power semiconductors like diodes, BJTs, MOSFETs, thyristors, GTOs and IGBTs are taught. Based on this, designs of power electronic converters including drive circuits and snubbers are studied. These are for hard switched and resonant type converters. Also heat sinks and construction of low inductive converter circuit and inductive components are covered. Dimensioning of passive components as capacitors and EMC filters. Guest lecturers are invited as a part of the course.


ELK-21 Electronics for Control of Power

Supervisor: Lars Norum

Electronics for Control of Power 3,75 credits
The course shall train the students in design of electronic systems for instrumentation and control of electric energy conversion.

Contents: The subject includes both practical and theoretical studies in connection with analog and digital signal conditioning used for monitoring and control of electric energy conversion systems. Technologies for realization of such systems are studied. Design and programming of digital signal processors will be discussed.


ELK-22 Design of Electromagnetic Devices

Supervisor: Robert Nilssen

Content: The course focuses on the design of components used in electric power engineering . Physical modelling (field models) and economic models which are used in connection with optimization are emphasized. Design and optimization of a permanent magnetic machine will be completed as a part of the course.

FEMLAB, Matlab (optimization) are important tools.


ELK-23 Power Electronics in Future Power Systems

Supervisor: Elisabetta Tedeschi

Required background: Power electronics for renewable energy, Motor drives course or similar courses.
Objective: To give knowledge on the evolution of the power system, where all electric power, from its production to its end use, will be controlled to flow through some power electronics interfaces, creating new challenges and opportunities.
Content: With power electronics developments, the power system is under transformation in a transition from being mechanically controlled to being electronically controlled. Power electronics is today being used to make dc/dc and ac/dc converters for a wide range of applications ranging from utility, transportation, and renewable energy integration in general. Among the utility applications high-voltage dc (HVDC) transmission, Flexible AC Transmission (FACTS) devices (static VAR compensators), and interfaces for renewable energy converters rely on power electronics to for the compatibility with utility transmission and distribution networks. Similarly, microgrids, smartgrids, wind parks, PV parks and wave parks are all enabled by power electronics controllable interfaces.
The flexible platform offered by power electronics with its fast digital signal processing boards are the ideal basis to enable control solutions that, when properly designed, can serve to diverse purposes and add to the flexibility to offer real-time power management features highly demanded by the power systems today. These applications and the control solutions for power electronics will be the specific focus of the course. 



ELK-30 Condition assessment of high voltage components

Supervisor: Erling Ildstad

Content: The course describes principle and equipment for condition assessment of power cables, transformers, switches, arresters, power lines and SF6-insulated switchgears. Such diagnostic testing is needed in order to evaluate the need for maintenance and replacement with respect to reliability of the components and cost-benefit analysis. In addition a brief summary of relevant ageing and degradation mechanisms, type of fault and fault frequency will be given.


ELK-31 Computer Simulation of Electrical Transients

Supervisor: Hans Kristian Høidalen

Necessary background: TET4130 Over voltages and over voltage protection, TET4190 Power electronics for renewable energy or corresponding knowledge.

Content: The course will give you an introduction to numerical methods for calculation of transient responses in electrical circuits. System description and modelling of inductances, capacitors, switches, transmission lines, and nonlinear elements using the trapezoidal rule. MathLab will be used to implement solution methods and solve simplified electrical circuits. Usage of EMTP (Electromagnetic Transient Program) and ATPDraw compared with other programs as KREAN and EMTDC. Examples of calculation of circuit responses in electrical power systems are illustrating the theory.


ELK-32 Intelligent Installations in Buildings

Supervisor: Eilif Hugo Hansen

Content: The course gives knowledge about planning of data based control systems in buildings. Demand and functional analysis, central operation control (COC), installation bus systems, planning methodology, system integration tools, economy.

Data communication: Protocols, transmission media and characteristics.