Application of electromagnetic continuous variable transmission in hydraulic turbines to increase stability of an off-grid power system


Тип публикации: статья из журнала

Год издания: 2022

Идентификатор DOI: 10.1016/j.renene.2022.06.062

Ключевые слова: dynamic stability, electromagnetic continuous variable transmission, hydraulic turbines, micro-hydroelectric power plant, off-grid power system, stabilization of output parameters

Аннотация: In the context of climate change, today's adoption of renewable energy sources in isolated power systems is becoming an increasingly more significant issue. Micro-hydro power plants are emerging as a mature balancing technology and a great alternative to large hydropower plants as they do not encounter population displacement and mПоказать полностьюany environmental problems. It is worth noting that hydroelectric power plants combined with various sources require improvement in control laws and algorithms. Strong disturbing impacts, namely transient processes, in an isolated electric power system cause an appreciable decrease in dynamic stability. This paper presents research conducted to ensure synchronous parallel operation of permanent-magnet generators used in micro-hydroelectric power plants in an isolated power system with a controllable flexible coupling between turbine and generator. The importance of this study lies in the issue of electromechanical compatibility to be achieved in parallel operation of generators that have different parameters of time constant of mechanical inertia of rotors of electrical machines. This paper provides an overview of possible solutions to the identified problem. A concept based on a controllable flexible coupling between generator and turbine is proposed as a promising avenue to solve this problem. The mathematical models are presented along with the laws and algorithms developed for automatic control of the generator speed. Oscillograms of simulation and physical modeling presented in the final part of the paper show parallel operation of permanent-magnet synchronous generators in an isolated electric power system for various electrical distances of three-phase short circuit points. © 2022 Elsevier Ltd

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Журнал: Renewable Energy

Выпуск журнала: Vol. 196

Номера страниц: 125-136

ISSN журнала: 09601481


  • Achitaev A.A. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Suslov K.V. (Irkutsk National Research Technical University, 83, Lermontov St, Irkutsk, 664074, Russian Federation)
  • Nazarychev A.N. (Saint Petersburg Mining University, 2, 21st Line, St, Petersburg, 199106, Russian Federation)
  • Volkova I.O. (National Research University Higher School of Economics, 20 Myasnitskaya Street, Moscow, Russian Federation)
  • Kozhemyakin V.E. (Siberian Federal University, Krasnoyarsk, Russian Federation)
  • Voloshin A.A. (National Research University “Moscow Power Engineering Institute”, 14, Krasnokazarmennaya, Moscow, 111250, Russian Federation)
  • Minakov A.V. (Siberian Federal University, Krasnoyarsk, Russian Federation, Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russian Federation)

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