Patent ID: 7016793
Filing Date: 2006-03-21
Classification: G01R,H02J,Y02E

Abstract:
1. An apparatus for anti-islanding protection of a distributed generation with respect to a feeder connected to an electrical grid, the apparatus comprising: a sensor adapted to generate a voltage signal representative of an output voltage at the distributed generation, a current signal representative of an output current at the distributed generation, or any combination of signals comprising at least one of the foregoing; and a controller responsive to the signals from the sensor, and productive of a control signal directed to the distributed generation to drive an operating characteristic of the distributed generation out of a nominal range in response to the electrical grid being disconnected from the feeder; wherein the controller is configured to analyze the sensor voltage and current als in a vector format such that the resulting control signal is capable of driving both a voltage magnitude and a frequency magnitude of the distributed generation out of a nominal range.