New Method of Protection against Lightning Overvoltages for High Voltage GIS Substations
نویسندگان
چکیده
In the present paper simulations of the lightning overvoltages propagation phenomenon in a typical 420 kV SF6 GIS substations are presented. A new overvoltage mitigating passive device in a form of a high-voltage L-C filter is proposed. A process of its development and research is explained along with a simulation results. As demonstrated, the proposed device can be used in HV networks as an alternative or additional improvement for lightning overvoltages mitigation purposes. All simulations have been conducted using MATLAB and ATP/EMTP software. Streszczenie. W artykule przedstawiono symulacje wyładowań atmosferycznych i propagacji fali przepięciowej w typowych stacjach GIS. Zaprezentowano możliwość zapewnienia dodatkowej ochrony przeciwprzepięciowej poprzez ograniczenie maksymalnej wartości przepięć za pomocą filtru L-C. Proponowane rozwiązanie może być użyte jako alternatywne lub spełniające dodatkową ochronę przeciwprzepięciową. Symulacje przeprowadzono przy użyciu programów MATLAB i ATP/EMTP. (Nowa metoda na ograniczenie przepięć piorunowych w stacjach typu GIS).
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