http://peertopatent.org/patent/665/prior_art/list An intelligent electronic device is operable to use a signal derived from an electrical power delivery system to effectively detect an islanding condition. The intelligent electronic device is configured to compare a frequency deviation (from nominal frequency) and a rate-of-change of frequency of the electrical power delivery system to a protection characteristic of the intelligent electronic device to quickly and securely detect islanding conditions thereby enhancing power protection, automation, control, and monitoring performance. The intelligent electronic device uses local measurements of the electrical power deliver system to provide reliable and economical means to properly separate a generation site from the remainder of the electrical power delivery system. Such may be useful to prevent reclosing out of synchronism. en-us Islanding detection in an electrical power delivery system Title: <br/>ISBN: <br/>Description: his paper presents an overview of power system islanding and islanding detection techniques. Tue, 08 Nov 2011 18:44:19 -0800 http://peertopatent.org/prior_art/1376/detail Islanding detection in an electrical power delivery system Title: IEEE Bologna Power Tech Conf<br/>ISBN: <br/>Description: Islanding detection methods for distributed resources are reviewed. Special emphasis is put on some of the detecting systems based on “active methods” which have been developed in Japan for rotating machine type distributed generations. Then, reduction of the islanding detection sensitivity with multiple distributed generations is discussed. Finally, a new concept of an islanded operation is introduced. Tue, 08 Nov 2011 18:38:28 -0800 http://peertopatent.org/prior_art/1375/detail Islanding detection in an electrical power delivery system Patent/Application #: 6864595<br/>Description: A method of controlling a generator system connected to an electric power system in which the output frequency characteristic of the generator system is measured, a first phase angle and frequency of the measured frequency characteristic is estimated using a first phase locked loop having a first bandwidth, and a second phase angle and frequency of the measured frequency characteristic is estimated using a second phase locked loop having a second bandwidth greater than the first bandwidth. Sun, 06 Nov 2011 22:16:10 -0800 http://peertopatent.org/prior_art/1366/detail