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ANALYSE FREQUENTIELLE [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2024-05-08

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Transformers
CONT

Frequency response analysis (FRA) is [a] diagnostic tool for detecting winding and core deformation in power transformers ... Such deformations affect the equivalent, inductive, and capacitive components of the transformer, thereby altering its frequency response. ... an expert is required to analyze the obtained results, which makes the interpretation process inconsistent and reliant more on personnel expertise than standardized guidelines. Essentially, FRA is a comparative technique that requires a reference signature (fingerprint) with which future signatures are compared, to identify any changes due to various internal faults.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Transformateurs
CONT

L'analyse de la réponse fréquentielle est une technique couramment utilisée pour détecter des déformations au sein des équipements de puissance tels que les transformateurs de puissance. Les mesures permettent d'enregistrer une «empreinte digitale» unique du transformateur, laquelle peut être comparée à une mesure de référence. Cependant, l'interprétation des réponses en fréquence reste parfois très vague et ne permet toujours pas de localiser le défaut émergent.

Spanish

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Record 2 1999-09-24

English

Subject field(s)
  • Combinatorial Analysis (Mathematics)
  • Statistics
  • Hydrology and Hydrography
DEF

Procedure involved in interpreting a past record of hydrological events in terms of future probabilities of occurrence, e.g. estimates of frequencies of floods, droughts, storages, rainfall, water quality, waves.

French

Domaine(s)
  • Analyse combinatoire (Mathématiques)
  • Statistique
  • Hydrologie et hydrographie
DEF

Méthodes utilisées pour l'interprétation de séries d'événements hydrologiques passés en termes de probabilités de future apparition, par ex. estimation de la fréquence des sécheresses, des crues, des volumes stockés, des pluies, de la qualité des eaux, de la propagation des ondes.

Spanish

Campo(s) temático(s)
  • Análisis combinatorio (Matemáticas)
  • Estadística
  • Hidrología e hidrografía
DEF

Procedimiento para interpretar series registradas de sucesos hidrológicos en términos de probabilidad de que vuelvan a ocurrir; por ejemplo estimaciones de frecuencias de crecidas, sequías, precipitaciones, volúmenes almacenados, calidad del agua, olas.

Save record 2

Record 3 1984-10-24

English

Subject field(s)
  • Radioelectricity

French

Domaine(s)
  • Radioélectricité
OBS

Essais non destructifs. Ultrasons-analyse par variation de la fréquence. Source : Jack Newbury (CANMET).

Spanish

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