Identifying the Conditions of Maximum Electricity Demand Coverage in a Direct Mode, by Wind and Photovoltaic sources

Comendant Ion; Dupleva (Prepeliţa) Iulia; Turcuman Lilia

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COMENDANT, Ion, DUPLEVA (PREPELIŢA), Iulia, TURCUMAN, Lilia. Identifying the Conditions of Maximum Electricity Demand Coverage in a Direct Mode, by Wind and Photovoltaic sources. In: International Conference on Modern Power Systems, 16-17 iunie 2021, Cluj-Napoca. New Jersey, SUA: Institute of Electrical and Electronics Engineers Inc., 2021, Ediția a 9-a, p. 0. ISBN 978-166543381-5. DOI: https://doi.org/10.1109/MPS52805.2021.9492533

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International Conference on Modern Power Systems
Ediția a 9-a, 2021

Conferința "9th International Conference on Modern Power Systems"
Cluj-Napoca, Romania, 16-17 iunie 2021

Identifying the Conditions of Maximum Electricity Demand Coverage in a Direct Mode, by Wind and Photovoltaic sources

DOI:https://doi.org/10.1109/MPS52805.2021.9492533

Pag. 0-0

Comendant Ion, Dupleva (Prepeliţa) Iulia, Turcuman Lilia

Institute of Power Engineering

Proiecte:

Menționat în lucrare: 20.80009.7007.18 Soluţii tehnice ecoinovative de eficientizare a consumului de energie în clădiri şi elaborarea opţiunilor de dezvoltare a reţelelor inteligente cu integrare avansată a energiei regenerabile în R.M.

Disponibil în IBN: 24 august 2021

Rezumat

To reach the objectives of energy security and updated NDC targets, 100% RES scenario is considered for the R. Moldova. The specific goal of this study is to identify the conditions under which a maximum coverage of the annual electricity demand can be obtained directly from WF+PV sources. Two approaches are used to reach the goal: WF and PV cover energy demand in a direct mode without considering the balancing power-Technical Weight, and second, WF and PV cover the demand in a direct mode together with a source of balancing power-Gas turbine (GT)-Economic Weight. The results obtained: When the capacities of WF and PV are determined in a way to produce electricity equal to annual power demand, Technical Weight is equal to a maximum of 71-72%. If WF and PV electricity produced is higher than demand by 50%, WF+PV tandem may cover the energy demand in a direct mode at maximum level of 80.5%. Five variants of WF, PV and GT economic parameters variation were considered when these sources are operating together. The calculations done and analysis performed showed that: The minimum price of electricity produced by WF+PV+GT in Vl (basic variant, current data) takes place at a PV integration level of lS% (Zopt). At WF specific investment of 750/kW (V2), compared to 1445/kW in Vl, Zopt is equal to zero. That is, at such WF specific investment, PV implementation is not feasible. Price for electricity is lower than in Vl by 25.4%. Even at a specific investment of about 1000/kW for WF, the minimum energy price is obtained in the absence of PV. Decreasing PV specific investment by up to 50% (V3) compared to the level established in Vl has little influence on the maximum Technical Weight. The electricity price is lower than in Vl by circa S%. A 25% decline in TG specific investments (V4), or a 17% drop in the price for natural gas (V5) compared to Vl, have no material effect on the maximum Technical Weight.

Cuvinte-cheie
wind farms, photovoltaic sources, power demand, balancing power, renewable power supply

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