Method for monitoring the radial gap between the rotor and...

H - Electricity – 02 – K

Patent

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Details

H02K 11/00 (2006.01) H02K 15/16 (2006.01)

Patent

CA 2394705

The invention relates to a method for monitoring the radial gap (10) between the rotor (6) and the stator (8) of an electric generator (2). The aim of the invention is to provide a method that allows an especially reliable analysis of the shape of the radial gap (10) during operation of the generator (2). To this end, a measuring cycle is carried out in the stationary and balanced operating mode of the generator at defined intervals. In every measuring cycle, current parameters (120) of the radial gap (10) are determined from current marginal values (50) of the generator (2), from current influential values (80) of the generator (2) and from current measuring data (100). These parameters are used to determine and evaluate the shape of the radial gap (10) and the distance between the rotor (6) and the stator (8) by comparing them with reference parameters. The inventive method allows to better predict when repairs have to be made.

L'invention concerne un procédé pour la surveillance de la fente radiale (10) entre le rotor (6) et le stator (8) d'un générateur électrique (2). L'invention vise à assurer de manière particulièrement sûre une analyse de la forme de la fente radiale (10) pendant le fonctionnement du générateur (2). A cet effet, un cycle de mesure est exécuté à intervalles de temps fixes dans un état de fonctionnement stationnaire et équilibré du générateur (2). A chaque cycle de mesure, des grandeurs caractéristiques en cours (120) de la fente radiale (10) sont déterminées à partir de grandeurs marginales en cours (50) du générateur (2), de grandeurs d'influence en cours (80) du générateur (2) et de données de mesure en cours (100) de la fente radiale (10). Il est procédé à partir de ces grandeurs caractéristiques à une détermination et à une évaluation de la forme de la fente radiale (10) et de l'écartement entre le rotor (6) et le stator (8) par comparaison à des grandeurs caractéristiques de référence afin de pouvoir mieux prévoir les réparations.

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