Power system stability

This course provides a unique opportunity for engineers and specialists in the power industry to undertake a comprehensive and in-depth study of the most important aspects of power system stability. The aim is to bridge the gap between theory and practice by combining theoretical lectures with laboratory experiments. Participants will enhance their understanding of power system stability and control, including the mitigation of system oscillations following disturbances and contingencies.

POWER SYSTEM STABILITY – WHERE THEORY MEETS PRACTICE

Rejlers has extensive experience in the energy sector, supporting utilities and industries across conventional and renewable power generation, energy storage, and power distribution. With expertise spanning power system studies, control system optimization, and real-world testing and validation, Rejlers helps strengthen the stability, performance, and resilience of power systems.

Together with Chalmers University of Technology, Rejlers offers this comprehensive course in Power System Stability. By combining theoretical lectures with laboratory sessions at Chalmers and drawing on extensive practical experience from real power systems, the course gives participants the opportunity to develop a deep and hands-on understanding of power system stability and control.

The course has a long-standing history spanning approximately 15 years. It was originally arranged by Solvina AB, now merged into Rejlers, initially with Dr. Prabha S. Kundur as lecturer and later independently by Solvina. Today, the course continues within Rejlers, building on the same combination of theoretical knowledge, practical experience, and real-world application.

COURSE content

Swing equation and power transfer equations, modeling of the grid and synchronous machines, Laplace transforms and block diagrams, PID control and tuning, frequency domain analysis, and stability criteria.

Theory on different types of stability – transient, voltage, and small signal stability. Laboratory demonstrations of voltage and transient stability under various grid
conditions.

Theory on frequency stability, droop control, different prime movers and governors, and the overall impact of the power plant process. Laboratory demonstrations of frequency stability, governor testing and tuning, and the impact of droop and different prime movers.

Theory of voltage control in synchronous machines, different excitation systems and their characteristics, and AVR testing methods. Laboratory demonstrations of AVR control response, testing procedures, and tuning practices, including the impact of various exciter types.

Theory of electromechanical oscillations and damping, principles of the Power System Stabilizer (PSS), different types of PSS, and PSS tuning and testing.
Laboratory demonstrations of small signal stability and PSS testing and tuning.

About the lecturer

Bengt Johansson

Senior Power Specialist
Bengt Johansson is a senior specialist in power system dynamics with more than 25 years of experience in electrical power engineering. He holds a Master’s degree in Electrical Engineering from Chalmers University of Technology and has extensive experience from power plants, industrial facilities, and utilities. At Rejlers, he works with frequency and voltage control testing, island operation verification, AVR and PSS tuning, grid code compliance, and dynamic simulations for Swedish and international clients. Bengt also leads Rejlers' course Power System Stability and delivers tailored trainings worldwide, combining technical expertise with practical field experience to give participants a clear understanding of power system stability and control.