Patent ID: 11881709
Assignee: U.S. DEPARTMENT OF ENERGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 0:
1. An operating system coupled to and controlling at least one Distributed Energy Resource (DER) in a smart grid, the operating system comprising:
a network system having first and second inputs and one output, the network system mapping all active and reactive power of power flows of the smart grid and providing measurements of an objective function;
a plurality of 2-dimensional Extremum Seeking (2D-ES) controllers operating in parallel to minimize, or maximize, a same value of the objective function, each of the 2D-ES controllers comprising:
an active power loop that governs an active power contribution, the active power loop in communication with the first input and the output, wherein the active power loop receives the measurements of the objective function which contain static and oscillatory components, wherein the active power loop comprises a highpass filter, a multiplier, a lower pass filter, an integrator and a summation device;
a reactive power loop that governs a reactive power contribution, the reactive power loop in communication with the second input and the output, wherein the reactive power loop receives the measurements of the objective function which contain the static and oscillatory components, wherein the reactive power loop comprises a highpass filter, a multiplier, a lower pass filter, an integrator and a summation device,

wherein the plurality of 2D-ES controllers work in a normal mode or a decay mode, wherein in response to a derivative of an averaged version of the objective function exceeding a predetermined value or in response to a value of the objective function deviating away from a predefined value, the plurality of 2D-ES controllers exit the decay mode and enter the normal mode.