Invention Grant
- Patent Title: Generator stator ground protection using third harmonic
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Application No.: US16106538Application Date: 2018-08-21
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Publication No.: US10931097B2Publication Date: 2021-02-23
- Inventor: Ritwik Chowdhury , Dale S. Finney
- Applicant: Schweitzer Engineering Laboratories, Inc.
- Applicant Address: US WA Pullman
- Assignee: Schweitzer Engineering Laboratories, Inc.
- Current Assignee: Schweitzer Engineering Laboratories, Inc.
- Current Assignee Address: US WA Pullman
- Agent Bradley W. Schield; Richard M. Edge
- Main IPC: G01R31/34
- IPC: G01R31/34 ; H02H7/06 ; F01D15/10 ; H02H3/52 ; G01R31/50 ; H02H3/08 ; G01R19/25 ; G01R21/00 ; H02H3/16
Abstract:
Detection of electric power generator stator ground fault conditions and protection of the generator due to such conditions is provided herein. In one embodiment, a generator protection element may calculate generator third harmonic voltage quantities using measurements from the generator terminals, and determine a stator ground fault condition using the calculated generator third harmonic voltage quantity. A tripping subsystem may issue a trip command based upon detection of a stator ground fault condition.
Public/Granted literature
- US20190097417A1 GENERATOR STATOR GROUND PROTECTION USING THIRD HARMONIC Public/Granted day:2019-03-28
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