Charles Ronald Grunewald

US Patent:

20180076622, Mar 15, 2018

Filed:

Mar 7, 2017

Appl. No.:

15/452414

Inventors:

Thomas Alexander Wilkins - , US
Steve Quade - Maple Grove MN, US
Charles Grunewald - Ottertail MN, US
Matthew R. Hadsell - Otesgo MN, US

International Classification:

H02J 3/16
H02J 3/38

Abstract:

Systems and methods for providing generated power to a power grid subject to active power, reactive power and voltage requirements during varying voltage conditions. An expanded reactive follower for distributed generation including but not limited to wind power plant and solar power plants and loads of other reactive controllers; that includes at least one reactive power generator coupled to an electric power system with a distributed power plant. The reactive power generator (e.g. a rapidly switched capacitor bank with fast reinsertion resistors, or inverter based reactive power generator) is located on either side of the point of interconnection of the power plant. A reactive follower controller controls the reactive power generator on the basis of an estimated reactive power commanded by a reactive power management system for distributed generation plant (e.g. Solar, Wind, Battery, etc. . . . ) and includes multi-variable control logic to determine when to increase reactive power produced by the reactive power generator based on the (estimated) reactive power commanded by the reactive power management system and point-of-interconnection measurements of power, reactive power, and voltage.