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Influence of dispersed generation on reliability of electric network

Malogulko Juliya

Przegląd Elektrotechniczny

2020

R. 96, nr 10

119--123

The article analyzes the pace of increase in the generation of photovoltaic stations in the context of the combined electricity system of Ukraine and the energy supply company of PJSC "Vinnytsyaoblenergo". An analysis of existing regulatory documents regulating the work of photovoltaic stations has been carried out. Within the framework of the considered documents, the criteria for assessing the reliability of the operation of electric networks, namely, the length of long breaks in electric power supply of consumers of electric energy SAIDI are defined. The interconnection of the change of reliability indices of electric networks operation with the increase in the number and installed capacity of renewable energy sources, in particular photovoltaic stations (PV), is shown. In order to increase the reliability of power supply, a method of its renewal has been proposed, due to the joint use of generation of small hydroelectric power stations and PV stations.

W artykule analizowano kombinowany system energetyczny na Ukrainie zawierający ogniwa fotowoltaiczne. Na podstawie dokumentacji analizowano niezawodność systemu biorąc pod uwagę przerswy w dostawie energii. Zaproponowano poprawę przez dołączenie małych elektrowni wodnych.

Selfoptimization local electric systems modes with renewable energy sources

Lezhniuk Petro, Kravchuk Serhii, Polishchuk Andriy

Przegląd Elektrotechniczny

2019

R. 95, nr 6

27--31

The article devoted creating optimal conditions for the integration of renewable energy source (RES) into electric grids, which were designed with power from centralized generation at large power plants. The possibility of simultaneous optimal functioning of electric grids and renewable energy sources is considered. The complex criterion of optimality is the economic mode of power sources, as well as the minimum losses of electricity during its transmission. To optimize the regimes of electricity grids with renewable energy sources, the principle of the least action is used. Optimal control of modes is carried out by the active-adaptive system.

W artykule analizowano optymalne warunki integracji do systemu energetycznego źródła energii odnawialnej. Zaproponowano metode symulacji uwzględniając warunki ekonomiczne i minimum strat przesyłowych. Do optymalizacji wykorzystano aktywny system adaptacyjny.