Patents by Inventor Goran Runvik

Goran Runvik 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).

  • Method and device for controlled reclosing of a circuit breaker
    Patent number: 8183718
    Abstract: A method for controlled reclosing of branch elements in an electric power system that has been subjected to a disturbance and that includes at least one branch element and at least one circuit breaker connected thereto. The angular difference between voltage vectors on both sides of the circuit breaker or at two end points of the branch element is detected and compared with a comparison value. In dependence on a magnitude of a deviation of the angular difference from the comparison value, the reclosing is either completed or blocked. The comparison value is updated automatically and regularly in such a way that an adaptive value is obtained. A system includes an element arranged to update the comparison value automatically and regularly in such a way that an adaptive value is obtained.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: May 22, 2012
    Assignee: ABB AB
    Inventors: Daniel Karlsson, Göran Runvik
  • Method and Device For Controlled Reclosing of a Circuit Breaker
    Publication number: 20080197715
    Abstract: A method for controlled reclosing of branch elements in an electric power system that has been subjected to a disturbance and that includes at least one branch element and at least one circuit breaker connected thereto. The angular difference between voltage vectors on both sides of the circuit breaker or at two end points of the branch element is detected and compared with a comparison value. In dependence on a magnitude of a deviation of the angular difference from the comparison value, the reclosing is either completed or blocked. The comparison value is updated automatically and regularly in such a way that an adaptive value is obtained. A system includes an element arranged to update the comparison value automatically and regularly in such a way that an adaptive value is obtained.
    Type: Application
    Filed: December 22, 2005
    Publication date: August 21, 2008
    Applicant: ABB AB
    Inventors: Daniel Karlsson, Goran Runvik