Impact of Integrated Renewable Energy Sources with Variable Power Output in Terms of Constrained Voltage Stability Limit


  • N.R. Rakhmanov Azerenerji LLC, Azerbaijan Scientific-Research and Design-Prospecting Power Engineering Institute, Baku, Azerbaijan
  • H.B. Guliev Azerbaijan Technical University, Baku, Azerbaijan
  • N.V. Tomin Melentiev Energy Systems Institute of Siberian Branch of Russian Academy of Sciences, Irkutsk, Russia
  • A.F. Yagubov Azerenerji LLC, Azerbaijan Scientific-Research and Design-Prospecting Power Engineering Institute, Baku, Azerbaijan
  • N.R. Husseynov Azerishiq OJSC, Baku, Azerbaijan



power system, variable renewable energy sources, balancing power, load flow in the electrical network, voltage stability


The paper is concerned with the development of a methodology for estimating the amount of balancing power in a system with a high penetration of renewable energy sources. To this end, it is crucial to analyze the influence of growing installed capacity of wind farms on the value of the balancing power of the energy system and random characteristics of its variability for various numbers of wind farms operating in the system. The possibilities of balancing power distribution are considered for characteristic critical load conditions of the system. The operating conditions of a real-world power system are simulated using wind speed measurement data obtained for the geographical locations of wind farms. The simulation is performed on a PC using developed programs for various combinations of these farms. The research involves constructing the relationships for the balancing power, determining the conditions for its reduction and the conditions for its limitation in terms of voltage stability in the balancing part of the system.


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