Patents by Inventor Niclas JOHANNESSON

Niclas JOHANNESSON 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: 9667058
    Abstract: A method in a power system which includes a protected unit, such as a transmission line, adapted to convey power from a first position in the protected unit to a second position in the protected unit, or vice versa, via a plurality of conductors. A first travelling wave differential current (ITWdiff) is determined based on a comparison between a determined first travelling wave current or a second travelling wave current in first and second positions and an estimation of the first travelling wave current or the second travelling wave current, respectively. The estimation is carried out using a propagation function which takes into account any distortion, attenuation and/or delay of the waveform of a wave due to propagation of the wave in the protected unit.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 30, 2017
    Assignee: ABB SCHWEIZ AG
    Inventor: Niclas Johannesson
  • Publication number: 20170117701
    Abstract: A method in a power system which includes a protected unit, such as a transmission line, adapted to convey power from a first position in the protected unit to a second position in the protected unit, or vice versa, via a plurality of conductors. A first travelling wave differential current (ITWdiff) is determined based on a comparison between a determined first travelling wave current or a second travelling wave current in first and second positions and an estimation of the first travelling wave current or the second travelling wave current, respectively. The estimation is carried out using a propagation function which takes into account any distortion, attenuation and/or delay of the waveform of a wave due to propagation of the wave in the protected unit.
    Type: Application
    Filed: March 17, 2014
    Publication date: April 27, 2017
    Applicant: ABB Schweiz AG
    Inventor: Niclas JOHANNESSON
  • Patent number: 9316671
    Abstract: A fault sensing system for a power system including a protected unit is disclosed. The fault sensing system is adapted to sense a fault in the protected unit. The fault sensing system includes at least one current sensing unit adapted to sense at least one first current in a first position in the protected unit and at least one second current in the second position in the protected unit and at least one voltage sensing unit adapted to sense at least one first voltage in the first position and at least one second voltage in the second position, and at least one processing unit.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: April 19, 2016
    Assignee: ABB TECHNOLOGY LTD
    Inventor: Niclas Johannesson
  • Publication number: 20150233976
    Abstract: A fault sensing system for a power system including a protected unit is disclosed. The fault sensing system is adapted to sense a fault in the protected unit. The fault sensing system includes at least one current sensing unit adapted to sense at least one first current in a first position in the protected unit and at least one second current in the second position in the protected unit and at least one voltage sensing unit adapted to sense at least one first voltage in the first position and at least one second voltage in the second position, and at least one processing unit.
    Type: Application
    Filed: October 3, 2012
    Publication date: August 20, 2015
    Applicant: ABB TECHNOLOGY LTD
    Inventor: Niclas JOHANNESSON