EH3250 Power System Automation 6.0 credits
The changes effecting the power system in terms of introduction of renewable production at lower voltage levels, electric vehicles and active consumers puts new requirements on automation and protection of power grids. This development is particularly dramatic at the distribution system level, where previously little or no automation was available. The new systems being installed require a much higher degree of flexibility and autonomy to fulfil modern requirements. Computer communication becomes a critical component of reliable automation and protection functions, requiring studies of ICT reliability to assess traditional power system reliability aspects.
Education cycleThird cycle
Main field of study
Grading scaleP, F
At present this course is not scheduled to be offered.
Intended learning outcomes
After completing the course, the participants should be able to:
· Analyse the new requirements facing transmission and distribution grids with a focus on automation and protection functions.
· Design automation functions for distribution grids, including for instance interlocking, switching schemes and protection.
· Create substation automation system architectures using the Substation Configuration Language.
· Interface automation devices with realtime simulators to evaluate protection settings against typical power system faults (over current, three phase fault, transformer internal fault)
· Analyse cybersecurity threats to substation automation systems and design appropriate detection and protection mechanisms.
Course main content
The course consists of lectures, substation automation system (SAS) design assignment and communication system design and evaluation. In addition, participants will perform an individual project in a field within the course scope.
The course has 8 lectures, covering the following topics:
Substation Engineering & Protection system design
Substation Automation System Architetures
Substation Communication Systems
Substation Configuration Language
Cybersecurity for Substation systems
IEC 61850 developments
Functional block programming and IEC 61850 station development
Substation architecture reliability analysis using PRMs
As preparation, participants will be asked to read relevant parts of the course litterature, information about exact content will be given during the course.
The participants will design a substation automation system using both software tools for architecture design and hardware devices, which must be interoperable to perform the necessary automation functions. The students are divided into groups, and potential functions to implement are: Interlocking, Automated Busbar switchover, and breaker maintenance switching.
Communication system design
The students will analyse communication needs and suggest a communication system, including security mechanisms, for the substation automation system. The system shall be implemented as models in the OPNET communication system simulator, and performance of the system under various fault conditions shall be evaluated.
The participants are tasked to design a research project into fields related to the course topics, suggested areas include:
1. Semantic models for data look up and identification in substation systems
2. Performance assessment of data encryption techniques in substation communication
3. Cybersecurity intrusion detection for substations.
4. Functional mapping of logical node interfaces
The work shall include definition of a research project in the area, including a literature review of related work in the field.
Admitted to PhD program at KTH.
The following literature is mandatory reading, and in addition a selection of reference documents from the IEC 61850 standard will be used.
 Substation Automation Handbook. Dr. Klaus-Peter Brand, Volker Lohmann, Dr. Wolfgang Wimmer, NettedAutomation.
 Electric Power Substation Engineering. John D McDonald (ed), ISBN:978-0849373831
 IEC 61850-7 Browsable models.pdf Karl-Heinz Schwarz.
 Modelling and Object Oriented Implementation of IEC 61850: The New International Standard on Substation Communications and Automation, C Ozansoy, ISBN:978-3838358482
- EXA1 - Examination, 6.0, grading scale: P, F
Requirements for final grade
Complete all three course components with a passing grade.
EECS/Electric Power and Energy Systems
Lars Nordström <firstname.lastname@example.org>
Course syllabus valid from: Spring 2017.
Examination information valid from: Spring 2019.