PROPER PLANNING OF THE NATIONAL GENERATION MIX BY TAKING INTO ACCOUNT THE EQUIVALENT IMPACT ON THE SYSTEM OF DIFFERENT TYPES OF ELECTRICITY PRODUCTION CAPACITIES (CONVENTIONAL STABLE PRODUCTION SOURCES – VARIABLE RENEWABLE ENERGY SOURCES)

Elektrane (2025)  [pp. 9-17]

AUTHOR(S) / AUTOR(I): Nenad Šijaković

 

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DOI: https://doi.org/10.46793/EEP25.009S

ABSTRACT / SAŽETAK:

Variable renewable energy sources reflected in solar and wind power sources can be a very useful addition to the modern power system and are certainly part of the energy future of every national power system. The aforementioned is possible only in the correct combination of variable RES with other, conventional, stable capacities for the production of electricity with a high capacity factors, reflected primarily in thermal power capacities. This paper deals with defining the principle of equating the combined generator mix that contains conventional, stable thermal power capacities, hydro power capacities and variable RES, with the traditional power system whose generator mix consists mostly of conventional thermal power capacities and hydro power capacities for electricity production. In order for the power system with a significant share of variable renewable energy sources in its production mix to maintain the performance from the point of view of stability and sacurity of operation and supply, which the existing power system based exclusively on conventional, stable power sources for the production of electricity, currently posses, it is necessary to add a number of elements that will be discussed in this paper, and which includes the mandatory retention in operation, i.e. in reserve of an adequate level of stable thermal power capacity to cover base load, i.e. to ensure the security of supply of domestic consumption, as well as to provide necessary power and energy for system needs related to power system regulation, i.e. for static and dynamic stability and security of operation. The same must be taken into account when planning the optimal generation mix of the future at the national level, looking at the technical needs from the point of view of secure and stable operation of the power system, i.e. security of supply of the domestic population and the economy, as well as during the comparisson of different types of production capacities for the production of electricity from an economic and financial point of view. The paper proposes the introduction of a new term in this area: „equivalent impact on the system“ which would cover all of the above. The planning of the national generation mix for the production of electricity, from the point of view of the national energy policy and strategy, must be based on serious and complex study analyzes and solid technical and economic arguments, taking into account the newly introduced „equivalent impact on the system“ of different types of units for electricity production.

KEYWORDS / KLJUČNE REČI: 

combined production system, security of supply, security of power system operation, power system stability, sustainable energy transition.

ACKNOWLEDGEMENT / PROJEKAT:

REFERENCES / LITERATURA:

Magazines
  • Robert Idel, “Levelized Full System Costs of Electricity”, Rice University’s Baker Institute for Public Policy, 6100 Main Street MS-40, Houston, 77005, TX, United States
Conferences
  • Nenad Šijaković, Nikola Obradović, Nebojša Petrović, The impact of the integration of variable renewable energy sources on the security of supply margin of the power system, CIGRE 2024
  • Nenad Šijaković, Nikola Obradović, Nebojša Petrović, Security of supply of domestic consumption in conditions of partial transition of the power system to variable RES, ISBN-978-86-82317-92-0, DOI: 10.46793/CIGRE37.C2.18, CIGRE 202516
Reports
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