Patents Represented by Attorney, Agent or Law Firm John I. Kajander
  • Anti-islanding detection scheme for distributed power generation
    Patent number: 6603290
    Abstract: An arrangement is provided for detecting the occurrence of an islanding condition in the connection of a distributed power generation source to an electrical power system or utility. In accordance with the present invention, a voltage or current signal is injected into the system, and the resulting system impedance is determined. The resulting determination is used as an indicator of the islanding condition. The detection arrangement allows the detection of islanding conditions even when the load is well matched to the generated power.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: August 5, 2003
    Assignee: Visteon Global Technologies, Inc.
    Inventor: Clark Glenn Hochgraf