A hybrid on-load tap changer and a method of operating the same

Details A hybrid on-load tap changer and a method of operating the same A hybrid on-load tap changer and a method of operating the same

G - Physics

05

F

G05F 1/14 (2006.01) H01F 29/04 (2006.01) H01H 9/00 (2006.01)

Patent

CA 2645010

A hybrid on-load tap changer (70), for use in high voltage alternating current power transmission, comprises a selector (72) and a diverter (74) having two legs (80, 82) defining respective current paths. Each leg (80, 82) includes a pair (P1, P2) of opposed first and second semiconductor switches (84, 86). The hybrid on-load tap changer (70) also includes a controller (76) configured to switch on one of the first or second semiconductor switches (84, 86) of a given leg (80, 82) at a predetermined point within the alternating current cycle so as to commutate off a desired semiconductor switch (84, 86) in the other leg (80, 82).

L'invention concerne un changeur de prises en charge hybride (70), destiné à être utilisé dans une ligne de transmission de courant alternatif haute tension, comprenant un sélecteur (72) et un déviateur (74) pourvu de deux pieds (80, 82) définissant des trajets de courant respectifs. Chaque pied (80, 82) comprend une paire (P1, P2) de premier et deuxième commutateurs semiconducteurs (84, 86) opposés. Le changeur hybride (70) selon l'invention comprend également une unité de commande (76) configurée pour commuter le premier ou le deuxième commutateur semiconducteur (84, 86) d'un pied donné (80, 82), à un point prédéterminé du cycle de courant alternatif, de sorte à décommuter le commutateur désiré (84, 86) dans l'autre pied (80, 82).

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