Search International and National Patent Collections

1. (WO2017019136) FREQUENCY THRESHOLD DETERMINATION FOR FREQUENCY-RESPONSIVE LOAD CONTROLLERS

Pub. No.:    WO/2017/019136    International Application No.:    PCT/US2016/028901
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Sat Apr 23 01:59:59 CEST 2016
IPC: G05B 13/02
G05D 19/00
H02J 3/00
H02J 3/12
H02J 3/14
H02J 7/00
Applicants: BATTELLE MEMORIAL INSTITUTE
Inventors: LIAN, Jianming
SUN, Yannan
MARINOVICI, Laurentiu, D.
KALSI, Karanjit
HANSEN, Jacob
Title: FREQUENCY THRESHOLD DETERMINATION FOR FREQUENCY-RESPONSIVE LOAD CONTROLLERS
Abstract:
Systems, methods, and computer media for managing frequency response in a power grid are provided herein. Individual grid-connected electrical devices can be turned on and/or off by corresponding frequency-responsive load controllers when frequency deviations beyond a threshold are detected. Each controller selects, for the corresponding electrical device, a frequency threshold from available frequencies in a frequency range. If the selected frequency falls within a deadband frequency range, then the controller sets the frequency threshold to a frequency outside of the deadband (e.g., to a closest available frequency outside of the deadband). On a system-wide level, this approximates a uniform distribution of frequency thresholds over the entire frequency range, including the deadband, and achieves the proper power-to-frequency relationship for grid stability. A supervisory coordinator can determine the frequency range from which a frequency threshold is selected based on aggregated power information for devices and controllers throughout the grid.