Invention Application
- Patent Title: GENERATOR ROTOR TURN-TO-TURN FAULT DETECTION USING FRACTIONAL HARMONICS
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Application No.: US17003477Application Date: 2020-08-26
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Publication No.: US20210067072A1Publication Date: 2021-03-04
- Inventor: Matchyaraju Alla , Ritwik Chowdhury , Normann Fischer , Dale S. Finney , Rogerio Scharlach
- 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
- Main IPC: H02P9/00
- IPC: H02P9/00 ; H02P9/02 ; G01R31/62 ; G01R19/252
Abstract:
Detection and protection against electric power generator rotor turn-to-turn faults, rotor multi-point-to-ground faults, and rotor permanent magnet faults is provided herein. A fractional harmonic signal is used to determine the rotor fault condition. The fractional harmonic signal may be a fractional harmonic magnitude of the circulating current of one phase. The fractional harmonic may be a fractional harmonic magnitude of a neutral voltage. A tripping subsystem may issue a trip command based upon detection of a rotor turn-to-turn fault condition.
Public/Granted literature
- US11316455B2 Generator rotor turn-to-turn fault detection using fractional harmonics Public/Granted day:2022-04-26
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