Patents by Inventor Sandeep Pabbathi

Sandeep Pabbathi 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).

  • Publication number: 20240072533
    Abstract: Fault detection in a shunt capacitor bank connected to a power system is described. Voltage and current measurements are obtained at a terminal of the shunt capacitor bank. An electrical parameter is calculated based on the voltage and current measurements, where the electrical parameter is an impedance angle or an active power. A difference between a first and a second value of the electrical parameter is calculated, based on which a fault is detected.
    Type: Application
    Filed: August 26, 2021
    Publication date: February 29, 2024
    Inventors: Sourabh MEHNDIRATTA, Sandeep PABBATHI, Prabakaran SELVARAJ, Arulselvan GOVINDARAJ, Sachin SRIVASTAVA
  • Patent number: 10921386
    Abstract: The present disclosure relates to methods and devices for calculating winding currents at a delta side for a transformer. The transformer has two or more windings, with a first winding being a delta connected winding. The method includes obtaining line currents measured with measurement equipment associated with lines connected with the windings. The method further includes calculating zero sequence currents for at least a second winding, from the line currents of a corresponding line. The method further includes calculating zero sequence currents for the first winding, based on the zero sequence currents for at least the second winding, a phase displacement between the windings, and a turns ratio associated with the windings. The winding currents is calculated from the zero sequence currents of the first winding, and the line currents of a corresponding line.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: February 16, 2021
    Assignee: ABB Power Grids Switzerland AG
    Inventors: Sandeep Pabbathi, Prabakaran S, Suresh Maturu
  • Publication number: 20190391199
    Abstract: The present disclosure relates to methods and devices for calculating winding currents at a delta side for a transformer. The transformer has two or more windings, with a first winding being a delta connected winding. The method may comprise obtaining line currents measured with measurement equipment associated with lines connected with the windings. The method may further comprise calculating zero sequence currents for at least a second winding, from the line currents of a corresponding line. The method may further comprise calculating zero sequence currents for the first winding, based on the zero sequence currents for at least the second winding, a phase displacement between the windings, and a turns ratio associated with the windings. The winding currents may be calculated from the zero sequence currents of the first winding, and the line currents of a corresponding line.
    Type: Application
    Filed: June 20, 2019
    Publication date: December 26, 2019
    Inventors: Sandeep Pabbathi, Prabakaran S, Suresh Maturu