Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Janowski Tadeusz, Wojtasiewicz Grzegorz
Rok wydania:	2012
Wersja dokumentu:	Elektroniczna
Język:	angielski
Numer czasopisma:	3
Wolumen/Tom:	22
Impact Factor:	1,199
Web of Science® Times Cited:	10
Scopus® Cytowania:	13
Bazy:	Web of Science \| Scopus
Efekt badań statutowych	NIE
Materiał konferencyjny:	NIE
Publikacja OA:	NIE
Abstrakty:	angielski
	Selection of the applicable 2G superconducting tapesfor transformer windings allows the use of a superconductingtransformer to limit short-circuit currents in a power networkand significantly reduce wear and tear of circuit breakers andother substation power equipment.In this case, the superconducting transformer can be regardedas an impedance coil whose impedance depends on the operatingconditions of the superconducting windings. The impedance of thetransformer in the superconducting state is small, equal to reactanceof the superconducting windings. After a quench, which iscaused by the growth of the short-circuit current, the impedanceof the transformer increases, due to appearance of additional superconductingwindings’ resistance. The level to which the fault current is limited by the superconducting transformer depends onthe operation characteristics of the superconducting windings andtheir construction and also on the parameters of theHTS tape used. This article presents the impact of the technical and operatingparameters of commercially available 2G HTS tapes on the valueof transformer’s impedance after a quench. An example analysis was performed to compare the short-circuit impedance and steadystatefault currents of a conventional copper transformer with asuperconducting transformers of equal nominal power.

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Possibility of using the 2G HTS superconducting transformer to limit short-circuit currents in power network

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