Increasing Technical Efficiency of Renewable Energy Sources in Power Systems

Andrzej Smolarz (), Petro Lezhniuk (), Stepan Kudrya, Viacheslav Komar, Vladyslav Lysiak, Iryna Hunko, Saltanat Amirgaliyeva, Saule Smailova and Zhassulan Orazbekov
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Andrzej Smolarz: Faculty of Electrical Engineering and Computer Science, Lublin University of Technology, 20-618 Lublin, Poland
Petro Lezhniuk: Department of Electric Power Stations and System, Vinnytsia National Technical University, 21021 Vinnytsia, Ukraine
Stepan Kudrya: Institute of Renewable Energy of the National Academy of Sciences of Ukraine, 02094 Kyiv, Ukraine
Viacheslav Komar: Department of Electric Power Stations and System, Vinnytsia National Technical University, 21021 Vinnytsia, Ukraine
Vladyslav Lysiak: Department of Electric Power Engineering and Control Systems, Lviv Polytechnic National University, 79013 Lviv, Ukraine
Iryna Hunko: Department of Electric Power Stations and System, Vinnytsia National Technical University, 21021 Vinnytsia, Ukraine
Saltanat Amirgaliyeva: Academy of Logistics and Transport Almaty, Almaty 050012, Kazakhstan
Saule Smailova: D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk 070000, Kazakhstan
Zhassulan Orazbekov: Abai Kazakh National Pedagogical University, Almaty 050010, Kazakhstan

Energies, 2023, vol. 16, issue 6, 1-14

Abstract: This paper presents a method for refining the forecast schedule of renewable energy sources (RES) generation by its intraday adjustment and investigates the measures for reserving RES with unstable generation in electric power systems (EPSs). Owing to the dependence of electricity generation by solar and wind power plants (PV and WPPs, respectively) on natural conditions, problems arise with their contribution to the process of balancing the power system. Therefore, the EPS is obliged to keep a power reserve to compensate for deviations in RES from the planned generation amount. A system-wide reserve (mainly the shunting capacity of thermal and hydroelectric power plants) is used first, followed by other means of power reserve: electrochemical, hydrogen, or biogas plants. To analyze the technical and economic efficiency of certain backup means, mathematical models based on the theory of similarity and the criterion method were developed. This method is preferred because it provides the ability to compare different methods of backing up RES generation with each other, assess their proportionality, and determine the sensitivity of costs to the capacity of backup methods with minimal available initial information. Criterion models have been formed that allow us to build dependencies of the costs of backup means for unstable RES generation on the capacity of the backup means. It is shown that, according to the results of the analysis of various methods and means of RES backup, hydrogen technologies are relatively the most effective. The results of the analysis in relative units can be clarified if the current and near-term price indicators are known.

Keywords: electric power system; renewable energy sources; instability of generation; reserve means; similarity theory; criterion method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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