Static var compensator apparatus
AssigneeABB Technology AG
InventorsLennart Angquist, Lars Paulsson, Ake Petersson, Bjorn Thordvaldsson
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Abstract
A one-phase static var compensator apparatus includes a compensator string consisting of a first static var compensator connected serially to a thyristor valve. The compensator string is arranged to be connected on its first end to one phase of a transmission grid of a rated voltage exceeding 69 kV. Moreover, the thyristor valve includes a plurality of thyristors connected serially and the compensator string is arranged to be directly connected to the transmission grid. A corresponding three phase apparatus is also presented.
Claims17
A single phase static var compensator system used in connection with a transmission grid, the compensator system comprising:
- a compensator string including:
- a static var compensator;
- a plurality of serially connected thyristors;
- a capacitor;
- said static var compensator connected in series with said plurality of serially connected thyristors;
- said capacitor connected in parallel with said plurality of serially connected thyristors;
- said compensator string directly galvanically connected to one phase of the transmission grid, the transmission grid having a rated voltage exceeding 69 kV.
A three phase static var compensator system used in connection with a three phase transmission grid, the three phase static var compensator system comprising:
- three compensator strings, each compensator string directly galvanically connected to one phase of the three phase transmission grid, each compensator string including:
- a static var compensator;
- a plurality of serially connected thyristors;
- a capacitor;
- said static var compensator connected in series with said plurality of serially connected thyristors;
- said capacitor connected in parallel with said plurality of serially connected thyristors;
- said transmission grid having a rated voltage exceeding 69 kV.
Dependencies are inferred from the claim text.