Automatic AC bus voltage regulation for power distribution grids
AssigneePerfect Galaxy International Limited
InventorsColin David Schauder, Leo F. Casey
Life of this patent
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Abstract
A system for automatically regulating voltage on a distribution-level AC bus having an actual voltage and a nominal voltage includes an electronic power converter connected to the distribution-level AC bus. The system generates a feedback signal representative of the actual voltage of the distribution-level AC bus and produces an input control signal in response to the feedback signal. The input control signal is representative of a commanded level of reactive power. The electronic power converter is responsive to the input control signal to deliver a commanded reactive power output to the distribution-level AC bus, and the commanded reactive power output pushes the actual voltage towards the nominal voltage.
Claims18
A system for automatically regulating voltage comprising:
- an AC bus voltage controller in communication with a distribution-level AC bus connected to a power distribution grid and having an actual voltage and a nominal voltage,
- the AC bus voltage controller being configured to generate an input control signal based on a feedback signal representative of said actual voltage of said distribution-level AC bus, a droop signal and a reference signal representative of said nominal voltage, said input control signal being representative of a commanded level of reactive power;
- and
- an electronic power converter connected to said distribution-level AC bus, wherein said electronic power converter is responsive to said input control signal to deliver a commanded reactive power output to said distribution level AC bus and said commanded reactive power output pushes said actual voltage towards said nominal voltage.
A system for automatically regulating voltage comprising:
- an AC bus voltage controller in communication with a distribution-level AC bus connected to a power distribution grid and having an actual voltage and a nominal voltage, the AC bus voltage controller being configured to generate an input control signal based on the actual voltage and the nominal voltage of the distribution-level AC bus, the input signal being representative of a commanded level of reactive power;
- an electronic power converter in communication with said distribution-level AC bus, wherein said electronic power converter is responsive to said input control signal to deliver a commanded reactive power output to said distribution level AC bus and said commanded reactive power output pushes said actual voltage towards said nominal voltage;
- and
- an apparent power management system in communication with the power converter and configured to manage an apparent power of said electronic power converter.
A system for automatically regulating voltage comprising:
- an AC bus voltage controller in communication with a distribution-level AC bus connected to a power distribution grid and having an actual voltage and a nominal voltage, the AC bus voltage controller being configured to generate an input control signal based on the actual voltage and the nominal voltage of the distribution-level AC bus, the input signal being representative of a commanded level of reactive power;
- an electronic power converter in communication with said distribution-level AC bus, wherein said electronic power converter is responsive to said input control signal to deliver a commanded reactive power output to said distribution level AC bus and said commanded reactive power output pushes said actual voltage towards said nominal voltage;
- and
- a real power feed-forward system configured to lower said commanded reactive power output in proportion to a measured instantaneous real power output.
Dependencies are inferred from the claim text.