System of modular reactive power compensators
AssigneeGeneral Electric Company
InventorsArvind Kumar Tiwari, Jayanti Navilgone Ganesh, Kasi Viswanadha Raju Gadiraju, Robert Gregory Wagoner, Harmeet Singh Narang
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Abstract
A system of reactive power compensators for a wind farm includes a multi-winding transformer and a plurality of modular reactive power compensators (MVBs). The multi-winding transformer includes a primary winding and a plurality of secondary windings. The primary winding is configured to be coupled to a point of common coupling (POCC) for the wind farm. The plurality of MVBs are each coupled to a corresponding winding of the plurality of secondary windings.
Claims18
A system of reactive power compensators for a wind farm, said system comprising:
- a wind turbine;
- a doubly-fed induction generator (DFIG) coupled to said wind turbine and configured to generate alternating current (AC) power to be supplied to a point of common coupling (POCC) for the wind farm;
- a multi-winding transformer comprising:
- a primary winding configured to be coupled to the POCC upstream from a grid-side step-up transformer;
- and
- a plurality of secondary windings;
- and
- a plurality of modular reactive power compensators (MVBs) each coupled to a dedicated one of said plurality of secondary windings, wherein said plurality of MVBs are integrated with the POCC via the single primary winding upstream of the grid-side step-up transformer.
A wind farm comprising:
- a point of common coupling (POCC) configured to be coupled to an electric grid, the electrical grid having a grid-side step-up transformer downstream of the POCC;
- a plurality of doubly-fed induction generators (DFIGs) configured to generate alternating current (AC) power to be supplied to said POCC;
- a multi-winding transformer connected to the POCC comprising:
- a primary winding configured to be coupled to said POCC;
- and
- a plurality of secondary windings;
- and
- a plurality of modular reactive power compensators (MVBs), each of said plurality of MVBs coupled to a dedicated one of said plurality of secondary windings, wherein said plurality of MVBs are integrated with the POCC via the single primary winding upstream of the grid-side step-up transformer.
A method of operating a wind farm, said method comprising:
- supplying, by a plurality of double-fed induction generators (DFIGs) coupled to corresponding wind turbines, alternating current (AC) power to a point of common coupling (POCC) configured to be coupled to an electric grid upstream of a grid-side step-up transformer;
- coupling a primary winding of a multi-winding transformer to the POCC;
- and
- coupling a plurality of modular reactive power compensators (MVBs) to the POCC through a dedicated one of a plurality of secondary windings of the multi-winding transformer, wherein the plurality of MVBs are are integrated with the POCC via the single primary winding upstream of the grid-side step-up transformer.
Dependencies are inferred from the claim text.