Invention Grant
- Patent Title: Fault location system using voltage or current measurement from diverse locations on a distribution network
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Application No.: US16827077Application Date: 2020-03-23
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Publication No.: US11378609B2Publication Date: 2022-07-05
- Inventor: Yoav Sharon
- Applicant: S&C Electric Company
- Applicant Address: US IL Chicago
- Assignee: S&C Electric Company
- Current Assignee: S&C Electric Company
- Current Assignee Address: US IL Chicago
- Main IPC: G01R31/08
- IPC: G01R31/08 ; G01R19/25 ; G01R27/16 ; G01R31/62 ; G01R31/64 ; H02H3/40 ; H02H7/26 ; G01R21/00

Abstract:
A method for identifying a location of a fault in an electrical power distribution network that includes identifying an impedance of an electrical line between each pair of adjacent utility poles, measuring a voltage and a current of the power signal at a switching device during the fault, and estimating a voltage at each of the utility poles downstream of the switching device using the impedance of the electrical line between the utility poles and the measured voltage and current during the fault. The method calculates a reactive power value at each of the utility poles using the estimated voltages, where calculating a reactive power value includes compensating for distributed loads along the electrical line that consume reactive power during the fault, and determines the location of the fault based on where the reactive power goes to zero along the electrical line.
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