Power supply arrangement for direct electrical heating of a...

H - Electricity – 02 – J

Patent

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Details

H02J 3/26 (2006.01) H02M 5/04 (2006.01)

Patent

CA 2737647

The invention relates to a power supply arrangement for supplying electrical power to the pipeline. The power supply arrangement (100) for direct electrical heating of a pipeline system comprises basically of a three phase transformer (2), a symmetrization unit (14), a compensation unit (22). The three phase transformer (2) is adapted to support a single phase load (4) connected between a first phase (6) and a second phase (8) of the transformer (2). The transformer (2) comprises at least one first tap changer (10) at a high voltage side (12) of the transformer (2). The symmetrization unit (14) comprising a first capacitor means (16) connected between the first phase (6) and a third phase (18) of the transformer and an inductor means (20) connected between the second phase (8) and the third phase (18) of said transformer (2). The compensation unit (22) comprising a second capacitor means (24) connected between the first phase (6) and the second phase (8) of the transformer (2). The first tap changer (10), the first capacitor means (16), the second capacitor means (24) and the inductor means (20) are adapted to be varied on-load.

L'invention concerne un dispositif d'alimentation électrique pour fournir de l'énergie électrique au pipeline. Le dispositif d'alimentation électrique (100) pour le chauffage électrique direct d'un circuit de pipeline comporte essentiellement un transformateur triphasé (2), un module de symétrisation (14) et un module de compensation (22). Le transformateur triphasé (2) est conçu pour supporter une charge monophasée (4) connectée entre une première phase (6) et une deuxième phase (8) du transformateur (2). Le transformateur (2) comporte au moins un premier changeur de prise (10) sur un côté haute tension (12) du transformateur (2). Le module de symétrisation (14) comporte un premier moyen de condensateur (16) connecté entre la première phase (6) et une troisième phase (18) du transformateur et un moyen d'inductance (20) connecté entre la deuxième phase (8) et la troisième phase (18) dudit transformateur (2). Le module de compensation (22) comporte un deuxième moyen de condensateur (24) connecté entre la première phase (6) et la deuxième phase (8) du transformateur (2). Il est possible de faire varier sous charge le premier changeur de prise (10), le premier moyen de condensateur (16), le deuxième moyen de condensateur (24) et le moyen d'inductance (20).

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