Automatic ac bus voltage regulation for power distribution grids

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.