Power flow controller with dc-to-dc converter linking shunt...

H - Electricity – 02 – J

Patent

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Details

H02J 3/18 (2006.01) H02J 3/24 (2006.01)

Patent

CA 2303534

A unified power flow controller has a dc-to-dc converter which uses the dc voltage produced by a first static inverter, connected in shunt with a transmission line and providing parallel reactive compensation, to establish the magnitude of a series compensation voltage injected into the transmission line by a second static inverter. The second static inverter then only has to regulate the phase angle of the series injected voltage. With the dc-to-dc converter turned off, the two inverters are decoupled and can be operated independently even if the other inverter is not operational.

Selon cette invention, une unité de commande du flux d'énergie unifiée comporte un convertisseur cc-cc qui utilise de la tension en courant continu produite par un premier inverseur statique, est connecté en parallèle avec une ligne de transmission et fournit une compensation réactive parallèle et ce, en vue d'établir le niveau d'une tension de compensation en série injectée dans la ligne de transmission par un second inverseur statique. Par la suite, ce second inverseur n'a qu'à réguler l'angle de phase de la tension injectée en série. Lorsque le convertisseur cc-cc s'est arrêté, ces deux inverseurs sont découplés et peuvent être exploités de manière indépendante même si l'autre inverseur ne fonctionne pas.

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