Patents by Inventor Abdel Rahman Khatib

Abdel Rahman Khatib has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11038352
    Abstract: Systems and methods described herein may be used to search for a minimum load overshed in a power system. For example, a control system includes memory and a processor operatively coupled to the memory. The processor may obtain an amount of power consumed by each load in a total set of loads in a microgrid. The processor may detect a difference between the amount of power generated and the amount of power consumed. The processor may select a subset of loads to shed from the total set of loads by searching a tree of potential load shed amounts to substantially balance the amount of power generated with the amount of power consumed. The processor may send one or more signals to one or more electronic devices to cause the selected subset of loads to be shed.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: June 15, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai
  • Publication number: 20210159700
    Abstract: Systems and methods described herein may be used to search for a minimum load overshed in a power system. For example, a control system includes memory and a processor operatively coupled to the memory. The processor may obtain an amount of power consumed by each load in a total set of loads in a microgrid. The processor may detect a difference between the amount of power generated and the amount of power consumed. The processor may select a subset of loads to shed from the total set of loads by searching a tree of potential load shed amounts to substantially balance the amount of power generated with the amount of power consumed. The processor may send one or more signals to one or more electronic devices to cause the selected subset of loads to be shed.
    Type: Application
    Filed: November 26, 2019
    Publication date: May 27, 2021
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai
  • Patent number: 11009931
    Abstract: The present disclosure relates to systems and methods of predicting voltages for various contingencies. For example, a monitoring system may include a processor that acquires at least one contingency of an electric power delivery system. The processor may acquire an expected control action based on the at least one contingency from controllers/IEDs. The processor may predict a voltage of at least one bus of the electric power delivery system by simulating the change in the state of the electric power delivery system caused by the expected control action. The processor may determine that the voltage of the at least one bus is predicted to violate one or more operational settings of the electric power delivery system if the at least one contingency were to occur. The processor may provide an indication that the voltage violates the one or more operational settings on a display of the electronic device.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: May 18, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai
  • Patent number: 10992134
    Abstract: The present disclosure relates to shedding loads based on perturbation of active power and perturbation of reactive power. For instance, a method includes receiving electrical measurements of a power system. The method includes detecting a contingency in the power system. The method includes determining perturbation of the active power and perturbation of reactive power in the power system based on the electrical measurements. The method includes shedding one or more loads of the power system due to the contingency based on the perturbation of the active power and the perturbation of reactive power.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: April 27, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Niannian Cai, Abdel Rahman Khatib, Niraj Kiritkumar Shah
  • Patent number: 10931109
    Abstract: The present disclosure relates to a computationally efficient technique for determining loads to shed based on both active and reactive power. For example, a monitoring and control system may receive electrical measurements of a power system. The monitoring and control system may determine an active power and a reactive power of each bus in the power system based on the received electrical measurements. The monitoring and control system may send a command to trip at least one breaker to cause the at least one breaker to shed a load based at least in part on both the active power and the reactive power consumed by each bus in the power system.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: February 23, 2021
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Niannian Cai, Abdel Rahman Khatib, Niraj Kiritkumar Shah
  • Publication number: 20200356128
    Abstract: The present disclosure relates to shedding loads based on perturbation of active power and perturbation of reactive power. For instance, a method includes receiving electrical measurements of a power system. The method includes detecting a contingency in the power system. The method includes determining perturbation of the active power and perturbation of reactive power in the power system based on the electrical measurements. The method includes shedding one or more loads of the power system due to the contingency based on the perturbation of the active power and the perturbation of reactive power.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 12, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Niannian Cai, Abdel Rahman Khatib, Niraj Kiritkumar Shah
  • Publication number: 20200358310
    Abstract: A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai
  • Patent number: 10763695
    Abstract: A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: September 1, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai
  • Publication number: 20200227915
    Abstract: The present disclosure relates to a computationally efficient technique for determining loads to shed based on both active and reactive power. For example, a monitoring and control system may receive electrical measurements of a power system. The monitoring and control system may determine an active power and a reactive power of each bus in the power system based on the received electrical measurements. The monitoring and control system may send a command to trip at least one breaker to cause the at least one breaker to shed a load based at least in part on both the active power and the reactive power consumed by each bus in the power system.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 16, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Niannian Cai, Abdel Rahman Khatib, Niraj Kiritkumar Shah
  • Publication number: 20200026337
    Abstract: The present disclosure relates to systems and methods of predicting voltages for various contingencies. For example, a monitoring system may include a processor that acquires at least one contingency of an electric power delivery system. The processor may acquire an expected control action based on the at least one contingency from controllers/IEDs. The processor may predict a voltage of at least one bus of the electric power delivery system by simulating the change in the state of the electric power delivery system caused by the expected control action. The processor may determine that the voltage of the at least one bus is predicted to violate one or more operational settings of the electric power delivery system if the at least one contingency were to occur. The processor may provide an indication that the voltage violates the one or more operational settings on a display of the electronic device.
    Type: Application
    Filed: February 25, 2019
    Publication date: January 23, 2020
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai
  • Publication number: 20180034317
    Abstract: A microgrid power flow monitoring and control system is described herein. The control system may determine active and reactive power sharing shortage on the electric power delivery system. The control system may utilize the control strategies of generation units, such as ISO control, droop control and constant power control to estimate power flow within a microgrid or other isolated system. A control strategy of one or more generators may be modified based on the determined power flow.
    Type: Application
    Filed: July 7, 2017
    Publication date: February 1, 2018
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Abdel Rahman Khatib, Niannian Cai