Invention Grant
- Patent Title: Fault detection and direction determination
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Application No.: US14956125Application Date: 2015-12-01
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Publication No.: US10247767B2Publication Date: 2019-04-02
- Inventor: Michael Ennis , Adam Gardner , Alejandro Montenegro , 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 ; H02H7/22 ; H02H3/38

Abstract:
Methods and apparatus are provided for fault detection and direction determination with a phase overcurrent relay using individual phase torques and the negative sequence torque, and with a ground overcurrent relay using the zero sequence torque. A directional element includes a ground element logic circuit, a negative element logic circuit and a phase element logic circuit to evaluate the operation state of the system, detect a fault condition and determine the direction of the fault condition in an electrical power distribution system having multiple sources on a power grid.
Public/Granted literature
- US20160266193A1 FAULT DETECTION AND DIRECTION DETERMINATION Public/Granted day:2016-09-15
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