Pregled bibliografske jedinice broj: 1263272
Impact of autotransformer inrush currents on differential protection operation
Impact of autotransformer inrush currents on differential protection operation // Electric power systems research, 220 (2023), 1-7 doi:10.1016/j.epsr.2023.109309 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1263272 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Impact of autotransformer inrush currents on
differential protection operation
Autori
Stipetić, Nina ; Filipović-Grčić, Božidar ; Perković, Marijan
Izvornik
Electric power systems research (0378-7796) 220
(2023);
1-7
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Autotransformer ; Inrush current ; Differential protection ; Parametric modelling
Sažetak
One of the main causes for incorrect operation of the transformer relay protection are inrush currents. The transient inrush currents occur when energizing the unloaded transformer, and it is a consequence of the transformer core saturation. This paper presents an analysis of transients caused by energization of three-phase autotransformer 300 MVA, with rated voltages 400/115/10.5 kV. Using the EMT software with parametric toolbox, a large number of simulations is performed to show the impact of model parameters on the amplitude and duration of inrush currents as well as the probability of differential current 2nd harmonic amplitude occurrence. Based on the simulation results, the optimal differential protection settings are determined, and the probability of a false relay protection operation is determined.
Izvorni jezik
Engleski
Znanstvena područja
Elektrotehnika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
