Fault location in electric power delivery systems
First Claim
Patent Images
1. A system for determining a location of a fault in a radial electric power delivery system with at least two branches, comprising:
- a first device in electrical communication with the radial electric power delivery system for obtaining power system voltage and current information therefrom and determining whether a fault condition exists thereon; and
,a fault locator in communication with the first device, including;
a receive module for receiving;
an indication from the first device of a fault condition on the radial electric power delivery system; and
,radial electric power delivery system data including the voltage and current information or a value calculated therefrom from the first device;
a fault location determination module for determining possible fault locations and creating a list of the possible fault locations using;
the radial electric power delivery system data from the first device; and
,physical parameters of the radial electric power delivery system.
2 Assignments
0 Petitions
Accused Products
Abstract
Accurately calculating location of a fault even on a branched, non-homogenous, radial electric power distribution system. The calculation includes determining a calculated reactance or impedance to the fault, and uses the line parameters to determine locations on the system that match the calculated reactance to the fault. The calculation may further include a determination of faulted phase and eliminate fault location possibilities based on absence of the faulted phase at those locations. The calculation may further use data reported from line monitors such as faulted circuit indicators (FCIs).
88 Citations
49 Claims
-
1. A system for determining a location of a fault in a radial electric power delivery system with at least two branches, comprising:
-
a first device in electrical communication with the radial electric power delivery system for obtaining power system voltage and current information therefrom and determining whether a fault condition exists thereon; and
,a fault locator in communication with the first device, including; a receive module for receiving; an indication from the first device of a fault condition on the radial electric power delivery system; and
,radial electric power delivery system data including the voltage and current information or a value calculated therefrom from the first device; a fault location determination module for determining possible fault locations and creating a list of the possible fault locations using; the radial electric power delivery system data from the first device; and
,physical parameters of the radial electric power delivery system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
-
36. A method for determining a location of a fault having a fault type in a radial electric power delivery system, comprising a first intelligent electronic device in electrical communication with the radial electric power delivery system, the method comprising:
-
obtaining, at the first intelligent electronic device radial electric power delivery system voltage and current information from the radial electric power delivery system; determining, at the first intelligent electronic device a fault condition on the radial electric power delivery system; communicating the fault condition and radial electric power delivery system data including the voltage and current information or a value calculated therefrom from the first intelligent electronic device to a fault locator; determining using the fault locator a possible fault location on the radial electric power delivery system and creating, using the fault locator, a list of the possible fault locations using; the radial electric power delivery system data; and physical parameters of the radial electric power delivery system. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
-
Specification