Smart Grids and Renewable Energy Laboratory (21)

Laboratorijos vadovas

Smart Grids and Renewable Energy Laboratory


– mathematical modelling of power systems and networks, investigation of their control issues;
– modelling and optimisation research of ICT-based control systems of power systems.


  • mathematical modelling of power systems, analysis and assessment of their parameters;
  • investigation of PS control issues and development of respective algorithms to deal with frequency regulation, active and reactive power control, static and dynamic stability, minimization of transfer losses, electric power quality, emergency prevention;
  • investigation of advanced PS control methods and application of new automatic control devices and information and communication technologies (ICT);
  • analysis and assessment of PS reliability, security and risks;
  • optimisation of PS operation in competitive market environment, development of competitive balancing mechanisms and ancillary service mechanisms;
  • research on the integration of renewable energy sources (wind, solar, etc.) and distributed generation into PS;
  • legal regulation of PS control and use-of-electricity issues;
  • economic efficiency analysis related to PS control and extension, and use of electricity;

Power system (PS) is one of the most complex technical and organizational systems covering generators, power networks and consumers, which operate synchronously, i.e., under the same mode and with the same current frequency in large areas. The operational modes of PS, specified by energy, powers, currents, voltages, phase angles and other parameters, are characterized by continuous change. All the modes should be kept within the pre-determined parameter limits, and this is the major responsibility of the PS operator. Control is a rather complex task even under normal operation; however, systems often get into stressed modes, sometimes emergency and post-emergency modes, the control of which is more complicated. Out-of-control operational modes may lead to loss of stability, voltage collapses, and failures of individual parts or total blackout. System and preventive automatics with protection relays and multiple digital controllers, as well as data communication systems, connecting generators and network substations with dispatch control centers, help the dispatchers to operate the systems and networks and protect them from emergencies.
Operators prepare control measures (equipment switch-over plans, settings of automatics, dispatch control signals) based on modelling, i.e., on calculations. This is an activity requiring a great deal of scientific knowledge and methods: adequate algorithms, assessment methodologies and analysis procedures need to be developed.

Development of modern power systems features significant changes. “Inter-system” electricity trade is expanding both geographically and in scope of various products of the electricity market (active power reserves and other ancillary services, forward financial transactions). Users and small generators are included into electricity trade and supply of ancillary services. Electricity is becoming “greener” due to increase of generation from renewable energy sources and also, if any, due to development of nuclear energy. Resistance of power systems to accidents will increase; reliability of power supply and power quality (more regular form of the voltage sine curve, less voltage flicker, etc.) will improve. Enablers for such changes are mostly the smart technologies, based on information and communication technologies. The result of their implementation is described by new concepts like smart generation, smart grid, smart relay protection, smart metering, and even smart house. The smartness component is achieved by computer logic devices (controllers with microprocessors) and their communication with each other and with the dispatchers of the power grid. Smart technologies help operators to control the power grid in a more efficient and reliable manner in real time, and in some cases even make this work simpler (since smart controllers perform a part of the control and monitoring functions without human intervention). On the other hand, control is becoming more complicated for the operators since many additional algorithms and programmes have to be installed into controllers, which requires integration of their interaction, coordination and reproStructural chart of a mathematical model for calculation of electric power system operating modesgramming of controllers for addressing the detected faults of operation.



Stanelytė D. [LEI], Radziukynas V. [LEI]. Analysis of Voltage and Reactive Power Algorithms in Low Voltage Networks In: Energies. Basel: MDPI, 2022, Vol. 15, Iss. 5, 1843, p. 1-26. ISSN 1996-1073.
Stanelytė D. [LEI], Radziukynienė N. [LEI], Radziukynas V. [LEI]. Overview of Demand‐Response Services: A Review In: Energies. Basel: MDPI, 2022, Vol. 15, No. 5, 1659, p. 1-32. ISSN 1996-1073.
Jankevičienė J. [LEI], Kanapickas A.. Impact of Climate Change on Wind Potential in Lithuania Territory In: Environmental and Climate Technologies. Warsaw: Sciendo, 2022, Vol. 26, Iss. 1, p. 1-11. Scopus. ISSN 1691-5208, eISSN 2255-8837.


Stanelytė D. [LEI]. Optimal demand side management model based on the internet of things In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 341-341. ISSN 1822-7554.
Liubčuk V. [LEI]. Data transmission in remote power quality monitoring system: current state-of-the-art review and expansion In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 309-309. ISSN 1822-7554.
Trukšinas A. [LEI]. Review of the power system reliability assessment methodologies In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021 . Kaunas: Lietuvos energetikos institutas, 2021, p. 201-210. ISSN 1822-7554.
Cicėnas P. [LEI]. Review of synthetic inertia applying in the electric power systems In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 223-2231. ISSN 1822-7554.
Paulauskas B. [LEI], Marčiukaitis M. [LEI]. Techno-economic performance study of stand-alone hybrid system in Lithuania In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021. Kaunas: Lietuvos energetikos institutas, 2021, p. 39-43. ISSN 1822-7554.
Jankevičienė J. [LEI], Kanapickas A. [LEI]. Observed and projected trends of near-surface wind speed in lithuania for energy applications In: The 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021) Kaunas, Lithuania, May 24-28, 2021 . Kaunas: Lietuvos energetikos institutas, 2021, p. 16-17. ISSN 1822-7554.
Jankevičienė J. [LEI], Kanapickas A. [LEI]. Projected Near-Surface Wind Speed Trends in Lithuania In: Energies. Basel: MDPI, 2021, Vol. 14, 5425, p. 1-13. ISSN 1996-1073.
Andriušis A., Stanelytė D. [LEI], Kniukšta I., Vaičekauskas A.. Nedidelės galios saulės elektrinių inverterių tyrimas In: Aukštųjų mokyklų vaidmuo visuomenėje: iššūkiai, tendencijos ir perspektyvos. Mokslo darbai . Alytus: Alytaus kolegija, 2021, Nr. 1 (9), p. 22-26. Index Copernicus. ISSN 2029-9311.
Šantaras S.. A review of voltage and reactive power control algorithms in medium voltage distribution networks In: IOP Conference Series: Earth and Environmental Science, Volume 897, 4th International Conference on Renewable Energy and Environment Engineering 27-30 August 2021, Florence, Italy (Virtual)). Florence: IOP Publishing, 2021, Vol. 897, 012016, p. 1-16..


Gecevičius G., Marčiukaitis M. [LEI]. Wind Power Integration Peculiarities in the Electricity System of the Baltic States In: Environmental Research, Engineering and Management. Kaunas: Kauno technologijos universitetas, 2020, Vol. 76, No. 3, p. 6-15. ISSN 1392-1649 , eISSN 2029-2139.
Stanelytė D., Radziukynas V. [LEI]. Review of Voltage and Reactive Power Control Algorithms in Electrical Distribution Networks In: Energies. Basel: MDPI, 2020, Vol. 51, 58, p. 1-26. ISSN 1996-1073.
Valančius R., Perednis E. [LEI], Vaičiūnas J., Jurelionis A.. Lithuanian Photovoltaic Market between 2010 and 2020, European Background, Current State and Development Perspective In: Proceedings of the ISES EuroSun 2020 Conference – 13th International Conference on Solar Energy for Buildings and Industry (Virtual). Freiburg: International Solar Energy Society, 2020, p. 866-871. ISBN 978-3-9820408-2-0.


Gecevičius G. [LEI], Marčiukaitis M. [LEI], Tamašauskienė M. [LEI]. The investigation of factors determining wind power prediction accuracy: case study of western Lithuania In: Energetika. Vilnius: Lithuanian Academy of Sciences, 2019, Vol. 65, No. 1, p. 95-102. ISSN 0235-7208.


Černeckienė J., Valančius R., Stasiulienė L., Perednis E. [LEI], Vaičiūnas J.. Analysis of the criteria for selecting heating systems for residential buildings in cold climate In: Journal of sustainable architecture and civil engineering = Darnioji architektūra ir statyba. Kaunas: Kauno Technologijos universitetas, 2018, Vol. 23, Iss. 2, p. 69-78. Index Copernicus. ISSN 2029-9990, eISSN 2335-2000.
Šnipas M., Radziukynas V. [LEI], Valakevičius E.. Numerical solution of reliability models described by stochastic automata networks In: Reliability Engineering and System Safety. Didžioji Britanija, Oxfordas: Elsevier, 2018, Vol. 169, p. 570-578. ISSN 0951-8320.


Šnipas M., Radziukynas V. [LEI], Valakevičius E.. Modeling reliability of power systems substations by using stochastic automata networks In: Reliability Engineering & System Safety. 2017, Vol. 157, p. 13-22. ISSN 0951-8320.


Grigonytė E. [LEI], Butkevičiūtė E.. Short-term wind speed forecasting using ARIMA model In: Energetika. Vilnius: Lietuvos mokslų akademija, 2016, T. 62, Nr. 1-2, p. 45-55. ISSN 0235-7208.
Radziukynas V. [LEI], Klementavičius A. [LEI], Kadiša S. [LEI], Radziukynienė N. [LEI]. Challenges for the Baltic power system connecting synchronously to continental European Network In: Electric power systems research. Nyderlandai: Elsevier, 2016, Vol. 140, p. 54-64. ISSN 0378-7796.
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Grigonytė E. [LEI]. Methodological and practical aspects of the adequacy assessment methodology for ENTSO-E systems In: 12th Annual international conference of young scientists on energy issues (CYSENI 2015), Kaunas, Lithuania, May 27–28, 2015. Kaunas: Lietuvos energetikos institutas, 2015, p. 197-205. ISSN 1822-7554.


Klementavičius A. [LEI], Radziukynas V. [LEI], Radziukynienė N. [LEI], Pukys G.. Homogeneous generation period method for the analysis of wind generation variation In: Energy Conversion and Management. 2014, Vol. 86, p. 165-174. ISSN 0196-8904.
Katinas V. [LEI], Markevičius A. [LEI], Perednis E. [LEI], Savickas J. [LEI]. Sustainable energy development-Lithuania’s way to energy supply security and energetics independence In: Renewable & sustainable energy reviews. 2014, Vol. 30, p. 420-428. ISSN 1364-0321.
Katinas V. [LEI], Sankauskas D. [LEI], Markevičius A. [LEI], Perednis E. [LEI]. Investigation of the wind energy characteristics and power generation in Lithuania In: Renewable Energy. 2014, Vol. 66, p. 299-304. ISSN 0960-1481.


Katinas V. [LEI], Sankauskas D. [LEI], Perednis E. [LEI], Vaitiekūnas P.. Investigation of the wind characteristics and prospects of wind power use in Lithuania In: Journal of Environmental Engineering and Landscape Management. 2013, Vol. 21, No. 3, p. 209-215. ISSN 1648-6897.
Katinas V. [LEI], Karbauskaitė J., Perednis E. [LEI], Valančius R.. Efficiency analysis of combined biomass and solar energy in Lithuania In: Clean technologies and environmental policy. New York: Springer, 2013, Vol. 15, Iss. 4, p. 667-676. ISSN 1618-954X.


Augutis J. [LEI], Žutautaitė I. [LEI], Radziukynas V. [LEI], Krikštolaitis R. [LEI], Kadiša S. [LEI]. Application of Bayesian method for electrical power system transient stability assessment In: International journal of electrical power and energy systems. Amsterdam: Elsevier, 2012, Vol. 42, No. 1, p. 465-472. ISSN 0142-0615.


International projects

Seventh Framework Programme (FP7)


Main objective of the Researcher night 2011 is to enhancing public recognition of researchers and their work, through bringing public and researchers closer to one other, tackling theMore

Other international projects


Today climate change causes serious problems to the societies worldwide and Europe starts to feel its consequences. At the same time European community is facing economical problems. More

Projects in Lithuania

EU Structural Funds

ES fondų investicijos 2014-2020 m.

UAB Energy Ideas Group (EIG) together with its partner Lithuanian Energy Institute and associate partner THS Ukraine, LLC is implementing the European Union funded project “DeveloMore


Name, surname Position Office phone. e-mail
Virginijus Radziukynas Head (Senior research associate) 323-LK +37037401943
Paulius Cicėnas PhD student + Junior research associate 122-AK +37037401842
Justė Jankevičienė PhD student 112-AK +37037401917
Gabrielė Jenciūtė Technician 112-AK +37037401917
Arvydas Kanapickas Senior research associate 112-AK +37037401917
Vitoldas Kavaliauskas Junior research associate 324-AK +37037401939
Arturas Klementavičius Research associate 322-AK +37037401937
Algimantas Leonavičius Junior research associate 324-AK +37037401939
Vladislav Liubčuk PhD student + Junior research associate 321-AK +37037401942
Mantas Marčiukaitis Senior research associate 115/1-AK +37037401847
Sigitas Masaitis Junior research associate 114/1-AK +37037401917
Darius Naujokaitis Research associate 112-AK
Benediktas Paulauskas PhD student 121-AK +37037401853
Eugenijus Perednis Senior research associate 123-AK +37037401813
Neringa Radziukynienė Junior research associate 313-AK +37037401944
Daiva Stanelytė PhD student 321-AK
Artūras Trukšinas PhD student + Junior research associate 324-AK +37037401939


Mathematical modelling of electrical networks and control systems
Compilation of mathematical model of Lithuanian power systems and collecting of parameters.
Integration of renewable energy (wind, solar power) into the EU
The influence of wind and solar power plants on the Lithuanian PS.
Modelling and analysis of optimal development scenarios for energy systems or individual sectors (electricity, heat, fuel)
Examination and evaluation of PS parameters, mathematical modelling of networks and control systems, research of system operating modes.