The first-year students at the technical universities often face the problem of using the previously acquired knowledge at a higher level required by engineering education. To solve this problem, the authors developed a series of lectures dedicated to establishing theoretical background, based on simulations in DigSILENT Power Factory software. In the lectures, the physical values and quantities as well as the purpose and characteristics of the power equipment are explained on the example of the simple models.
This article includes the detailed description of a lesson “Introduction into Power Systems” and presents some models and ways of explaining the material. The sections below concentrate on the lecture format focusing on methods for explanation of physical quantities and introducing power system components. Sequential parts create the mosaics of grid, with the following description of basic laws and principles in power systems.
 J. E. Tate, T. J. Overbye, J. Sebestik, and G. C. Reese, “Interactive Lessons for Pre-University Power Education,” IEEE Trans. Power Syst., vol. 23, no. 3, pp. 824–830, Aug. 2008. https://doi.org/10.1109/tpwrs.2008.920734
 M. Kezunovic, A. Abur, G. Huang, A. Bose, and K. Tomsovic, “The Role of Digital Modeling and Simulation in Power Engineering Education,” IEEE Trans. Power Syst., vol. 19, no. 1, pp. 64–72, 2004. https://doi.org/10.1109/tpwrs.2003.821002
 A. Pahwa, K. L. Butler-Purry, and H. Zareipour, “Foreword for the Special Section on Power and Energy Education,” IEEE Trans. Power Syst., vol. 29, no. 4, pp. 1871–1873, Jul. 2014. https://doi.org/10.1109/tpwrs.2014.2325408
 V. Akhmatov and A. Hejde Nielsen, “A Small Test Model of the Transmission Grid with a Large Offshore Wind Farm for Education and Research at Technical University of Denmark,” in 2006 IEEE PES Power Systems Conference and Exposition, pp. 650–654, 2006. https://doi.org/10.1109/psce.2006.296395
 T. Strasser, M. Stifter, F. Andrén, and P. Palensky, “Co-Simulation Training Platform for Smart Grids,” IEEE Trans. Power Syst., vol. 29, no. 4, pp. 1989–1997, Jul. 2014. https://doi.org/10.1109/tpwrs.2014.2305740
 Energiaturg.ee, Võrdle, vali ja sõlmi soodsaim elektrileping. [Online]. Available: http://energiaturg.ee/ [Accessed: 15 Mar. 2018].
 M. El-Hawary and G. S. Christensen, Optimal Economic Operation of Electric Power Systems. New York: Academic Press, 1979.
 J. Klimstra, Power Supply Challenges, 2nd ed. Vaasa: Wärtsilä Finland Oy, 2014.
 M. Keel, V. Medvedeva-Tšernobrivaja, J. Shuvalova, H. Tammoja, and M. Valdma, “On Efficiency of Optimization in Power Systems,” Oil Shale, vol. 28, no. 1S, pp. 253–261, 2011. https://doi.org/10.3176/oil.2011.1s.16
 M. Valdma, H. Tammoja, and M. Keel, Optimization of Thermal Power Plants Operation. Tallinn: TUT press, 2009.