Patents by Inventor Sai Krishna Raghupathula

Sai Krishna Raghupathula 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: 11677268
    Abstract: An intelligent electronic device (IED) includes memory and a processor operatively coupled to the memory. The processor is configured to establish, over a communication network of a power system, a connection association (CA) with a receiving device using a MACsec Key Agreement (MKA). The processor is configured to automatically send an announce message indicating a set of enabled application protocols on the IED to the receiving device.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: June 13, 2023
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Colin Gordon, Sai Krishna Raghupathula
  • Publication number: 20220069619
    Abstract: A software defined network (SDN) switch of a communication network includes a memory and a processor operatively coupled to the memory. The SDN switch receives a media access control security (MACsec) frame of power system data. The SDN switch detects an SDN flow match based at least in part on a port identifier of the MACsec frame. The SDN switch performs an action based on the SDN flow match.
    Type: Application
    Filed: September 1, 2020
    Publication date: March 3, 2022
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Colin Gordon, Sai Krishna Raghupathula, Jason A. Dearien
  • Publication number: 20220069618
    Abstract: An intelligent electronic device (IED) includes memory and a processor operatively coupled to the memory. The processor is configured to establish, over a communication network of a power system, a connection association (CA) with a receiving device using a MACsec Key Agreement (MKA). The processor is configured to automatically send an announce message indicating a set of enabled application protocols on the IED to the receiving device.
    Type: Application
    Filed: September 1, 2020
    Publication date: March 3, 2022
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Colin Gordon, Sai Krishna Raghupathula
  • Patent number: 9912158
    Abstract: The present disclosure pertains to distributed controllers configured to control a plurality of electrical generators in an electrical generation and distribution system. In one embodiment, a distributed controller consistent with the present disclosure may include a communication subsystem configured to communicate via a network. The communication system may receive a first plurality of time-stamped electrical parameter measurements associated with a first electrical generator. A measurement analysis subsystem may detect a change caused by an event in the measurements associated with the first electrical generator, and may detect a change in a second plurality of time-stamped electrical parameter measurements associated with a second electrical generator. A magnitude of the event may be determined based on the first and second plurality of time-stamped electrical parameter measurements.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: March 6, 2018
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Krishnanjan Gubba Ravikumar, Scott M. Manson, Sai Krishna Raghupathula
  • Patent number: 9906041
    Abstract: The present disclosure pertains to distributed controllers configured to control a plurality of electrical generators in an electrical generation and distribution system. In one embodiment, a distributed controller consistent with the present disclosure may include a communication subsystem to obtain a first plurality of time-stamped electrical parameter measurements from a first node. A measurement analysis subsystem may compare the first plurality of time-stamped electrical parameter measurements and the second plurality of time-stamped electrical parameter measurements. The first node and the second node may be associated in an electrical island by a topology detection subsystem based on the correlation. A control subsystem may be configured to implement a control action based on the association of the first node and the second node in the electrical island.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: February 27, 2018
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Krishnanjan Gubba Ravikumar, Scott M. Manson, Sai Krishna Raghupathula
  • Publication number: 20170271872
    Abstract: The present disclosure pertains to distributed controllers configured to control a plurality of electrical generators in an electrical generation and distribution system. In one embodiment, a distributed controller consistent with the present disclosure may include a communication subsystem configured to communicate via a network. The communication system may receive a first plurality of time-stamped electrical parameter measurements associated with a first electrical generator. A measurement analysis subsystem may detect a change caused by an event in the measurements associated with the first electrical generator, and may detect a change in a second plurality of time-stamped electrical parameter measurements associated with a second electrical generator. A magnitude of the event may be determined based on the first and second plurality of time-stamped electrical parameter measurements.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 21, 2017
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Krishnanjan Gubba Ravikumar, Scott M. Manson, Sai Krishna Raghupathula
  • Publication number: 20170271882
    Abstract: The present disclosure pertains to distributed controllers configured to control a plurality of electrical generators in an electrical generation and distribution system. In one embodiment, a distributed controller consistent with the present disclosure may include a communication subsystem to obtain a first plurality of time-stamped electrical parameter measurements from a first node. A measurement analysis subsystem may compare the first plurality of time-stamped electrical parameter measurements and the second plurality of time-stamped electrical parameter measurements. The first node and the second node may be associated in an electrical island by a topology detection subsystem based on the correlation. A control subsystem may be configured to implement a control action based on the association of the first node and the second node in the electrical island.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 21, 2017
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Krishnanjan Gubba Ravikumar, Scott M. Manson, Sai Krishna Raghupathula