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Generator vibration fault diagnosis method based on rotor vibration and stator winding parallel branches circulating current characteristics

Rotor vibration characteristics are first analyzed, which are that the rotor vibration of fundamental frequency will increase due to rotor winding inter-turn short circuit fault, air-gap dynamic eccentricity fault, or imbalance fault, and the vibration of the second frequency will increase when the... Full description

Journal Title: Chinese journal of mechanical engineering 2005, Vol.18 (4), p.592-596
Main Author: Wan, Shuting
Format: Electronic Article Electronic Article
Language: English
Quelle: Alma/SFX Local Collection
Publisher: College of Mechanical Engineering,North China Electric Power University, Baoding 071003, China%College of Electrical Engineering,North China Electric Power University, Baoding 071003, China
ID: ISSN: 1000-9345
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recordid: cdi_wanfang_journals_jxgcxb_e200504026
title: Generator vibration fault diagnosis method based on rotor vibration and stator winding parallel branches circulating current characteristics
format: Article
creator:
  • Wan, Shuting
ispartof: Chinese journal of mechanical engineering, 2005, Vol.18 (4), p.592-596
description: Rotor vibration characteristics are first analyzed, which are that the rotor vibration of fundamental frequency will increase due to rotor winding inter-turn short circuit fault, air-gap dynamic eccentricity fault, or imbalance fault, and the vibration of the second frequency will increase when the air-gap static eccentricity fault occurs. Next, the characteristics of the stator winding parallel branches circulating current are analyzed, which are that the second harmonics circulatingcurrent will increase when the rotor winding inter-turn short circuit fault occurs, andthe fundamental circulating current will increase when the air-gap eccentricity fault occurs, neither being strongly affected by the imbalance fault. Considering the differences of the rotor vibration and circulating current characteristics caused by different rotor faults, a method of generator vibration fault diagnosis, based on rotor vibration and circulating current characteristics, is developed. Finally, the rotor vibration and circulating current of a type SDF-9 generator is measured in the laboratory to verify the theoretical analysis presented above.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 1000-9345
fulltext: fulltext
issn:
  • 1000-9345
  • 2192-8258
url: Link


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descriptionRotor vibration characteristics are first analyzed, which are that the rotor vibration of fundamental frequency will increase due to rotor winding inter-turn short circuit fault, air-gap dynamic eccentricity fault, or imbalance fault, and the vibration of the second frequency will increase when the air-gap static eccentricity fault occurs. Next, the characteristics of the stator winding parallel branches circulating current are analyzed, which are that the second harmonics circulatingcurrent will increase when the rotor winding inter-turn short circuit fault occurs, andthe fundamental circulating current will increase when the air-gap eccentricity fault occurs, neither being strongly affected by the imbalance fault. Considering the differences of the rotor vibration and circulating current characteristics caused by different rotor faults, a method of generator vibration fault diagnosis, based on rotor vibration and circulating current characteristics, is developed. Finally, the rotor vibration and circulating current of a type SDF-9 generator is measured in the laboratory to verify the theoretical analysis presented above.
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abstractRotor vibration characteristics are first analyzed, which are that the rotor vibration of fundamental frequency will increase due to rotor winding inter-turn short circuit fault, air-gap dynamic eccentricity fault, or imbalance fault, and the vibration of the second frequency will increase when the air-gap static eccentricity fault occurs. Next, the characteristics of the stator winding parallel branches circulating current are analyzed, which are that the second harmonics circulatingcurrent will increase when the rotor winding inter-turn short circuit fault occurs, andthe fundamental circulating current will increase when the air-gap eccentricity fault occurs, neither being strongly affected by the imbalance fault. Considering the differences of the rotor vibration and circulating current characteristics caused by different rotor faults, a method of generator vibration fault diagnosis, based on rotor vibration and circulating current characteristics, is developed. Finally, the rotor vibration and circulating current of a type SDF-9 generator is measured in the laboratory to verify the theoretical analysis presented above.
pubCollege of Mechanical Engineering,North China Electric Power University, Baoding 071003, China%College of Electrical Engineering,North China Electric Power University, Baoding 071003, China
doi10.3901/CJME.2005.04.592