Coordinated high-impedance fault detection systems and methods

摘要

Systems and methods are presented for detecting high-impedance faults (HIFs) in an electric power delivery system using a plurality of coordinated high-impedance fault detection systems. In certain embodiments, a method for HIFs may include receiving first and second current representations associated with first and second locations of the electric power delivery system respectively. Based on at least one of the first and second current representations, the occurrence of an HIF may be determined. A relative location of the HIF may be determined based on a relative amount of interharmonic content associated with an HIF included in the first and second current representations, and a protective action may be taken based on the determined relative location.

主权项

1. A method for detecting high-impedance faults in an electric power delivery system comprising:
receiving a first current representation associated with a first location of the electric power delivery system; receiving a second current representation associated with a second location of the electric power delivery system; determining, based on at least one of the first and second current representations, the occurrence of a high-impedance fault on the electric power delivery system; determining a relative location of the high-impedance fault based, at least in part, on a relative amount of signal content associated with a high-impedance fault included in the first and second current representations; coordinating a first protective action by one of a first intelligent electronic device (IED) and a second IED based on the determined relative location of the high-impedance fault, and implementing the first protective action by one of the first IED and the second IED based on the determined relative location.