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Syllabus for

Academic year
ENM050 - Power system analysis
Syllabus adopted 2012-02-21 by Head of Programme (or corresponding)
Owner: MPEPO
7,5 Credits
Grading: TH - Five, Four, Three, Not passed
Education cycle: Second-cycle
Major subject: Electrical Engineering

Teaching language: English
Open for exchange students
Block schedule: B

Course module   Credit distribution   Examination dates
Sp1 Sp2 Sp3 Sp4 Summer course No Sp
0107 Examination 7,5 c Grading: TH   7,5 c   26 Oct 2012 pm M,  18 Jan 2013 pm V,  22 Aug 2013 am V

In programs

TIELL ELECTRICAL ENGINEERING - Electrical Engineering, Year 3 (compulsory elective)


Docent  Peiyuan Chen


EEK185   Power system design

Course evaluation:


For single subject courses within Chalmers programmes the same eligibility requirements apply, as to the programme(s) that the course is part of.

Course specific prerequisites

Basic electrical engineering courses, or equivalent.


The main aim of this course is to provide students theoretical methods and simulation tools for analyzing power system in steady state. This involves the development of mathematical models of main power system components to the implementation of large-scale power systems in normal and faulted operating conditions.

Learning outcomes (after completion of the course the student should be able to)

Upon graduation, the student would have sufficient knowledge and understanding of the basic steady-state operation of large power systems. Similarly the student would have gained skills and abilities to perform these analyses on his/her own.

With respect to Knowledge and Understanding, the graduated student will be able to:

1. Perform basic state evaluation of a small network using phasor-diagram, loss summation and two-port equations methods, and explain basic voltage control principle.

2. Model major components of power systems: three-phase power transformers, short-, medium- and long-transmission lines, loads, and reactive power compensation elements. Analyze the impact of different loading conditions on a transmission line.

3. Understand and use per unit system to perform studies in power systems.

4. Formulate network admittance matrix of a large power system.

5. Calculate power flows in a large power system by using various well-known algorithms (Gauss-Seidel, Newton-Raphson, Decoupled and Fast Decoupled Power Flow and DC Power Flow). Compare advantages and disadvantages of these algorithms. Select an appropriate algorithm for a specific power system application. Apply appropriate methods for control of voltages and power flows in a large power system.

6. Model and analyze the power systems in faulted conditions based on symmetrical components and sequence networks.

With respect to Skills and Abilities, graduated students will be able to:

7. Apply the above knowledge to design a small practical transmission network subject to normal operating, economic and reliability (contingency) constraints using offline power system simulation software. Document the work in a scientific report and present the design and control measures of your proposed power system.

8. Collaborate and work in a team with different backgrounds for the design project as well as for other occasions throughout the course.


The course is composed of lectures, tutorials, a computer-based project, and two laboratory exercises. The course covers the following topics. The indicated chapters refer to the course textbook by Hadi Saadat (see literature).

1. Fundamentals: State evaluation methods in small networks.

2. Power Transformers: The ideal transformer; Equivalent circuits for practical transformers; Three-phase transformer connections and phase shift; Transformers with off-nominal turns ratios. Per-unit system. Chp. 3

3. Transmission line modelling: RLC calculation of a transmission line; Short, medium, and long transmission line modelling; Important loading conditions of a long transmission line; Transmission capability and limitations of a long transmission line; Reactive power compensation techniques. Chp. 4, Chp 5

4. Network matrices and power flow analysis: Bus admittance matrix, power flow equations; Power flow solutions: Gauss-Seidel, Newton-Raphson methods; Decoupled power flow and fast decoupled power flow; dc (linearized) power flow; Regulating transformers in power flow analysis; Control measures for voltages and power flow, application of FACTS devices. Chp. 6

5. Symmetrical (balanced) faults: Thevenin equivalent method; Bus impedance matrix method. Chp. 9

6. Symmetrical components and sequence impedance: Definition of symmetrical components; Sequence impedances: transmission lines, transformers, synchronous machines. Chp. 10.1 ¿ 10.3

7.Analysis of unbalanced faults: system representation; single Line-to-Ground fault, Line-to-Line fault, double Line-to-Ground fault. Chp. 10.4 -10.8


The course is organized in about 18 lectures, 13 tutorials, 1 design project and 2 laboratory experiments.
In the project, the students will design a simple power system for power-flow calculations. The design is done using standard power-flow software, e.g., POWERWORLD SIMULATOR. Several operating conditions in both normal steady-state and various contingencies condition are to be enforced for a successful design.
In the first laboratory exercise, different operating conditions of a transmission line are demonstrated. In the second laboratory exercise, fault currents are measured and analyzed for different types of balanced and unbalanced short-circuit conditions on the transmission line.


The following book is the main textbook used throughout the course. Additional materials will be provided during lectures and/or be made available on the course homepage.

H. Saadat, "Power System Analysis", 3rd edition, PSA Publishing, 2010


The examination is based on the project report and the 'closed-book' written exam. The distribution of the final grade will be: i) project (20%), and ii) exam (80%). You will have to pass both in order to pass the course. The final grade will be 5, 4, 3 and U (fail).

Page manager Published: Thu 03 Nov 2022.