US 12,323,079 B2
System and method for controlling hybrid and grid power in an electric fracturing spread
Jose L Maldonado, Houston, TX (US); and Glenn Howard Weightman, Duncan, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Nov. 1, 2023, as Appl. No. 18/386,013.
Prior Publication US 2025/0141385 A1, May 1, 2025
Int. Cl. H02P 27/04 (2016.01); E21B 43/26 (2006.01)
CPC H02P 27/047 (2013.01) [E21B 43/2607 (2020.05)] 22 Claims
OG exemplary drawing
 
1. A load phase back system for controlling a plurality of electrical loads in an electric fracturing spread comprising:
monitoring circuitry configured to monitor input power received from an electric power source, the monitoring circuitry configured to determine a measured voltage and a measured frequency of the input power; and
a controller configured to control the power applied to the plurality of electrical loads from a power bus according to a value of the measured voltage and a value of the measured frequency of the input power, the controller configured to reduce power applied to a selected one of the plurality of electrical loads from the power bus when at least one of the measured voltage is less than a first threshold and the measured frequency is less than a second threshold.