FRA interpretation using numerical indices: State-of-the-art
MH Samimi, S Tenbohlen - International Journal of Electrical Power & …, 2017 - Elsevier
Abstract Frequency Response Analysis (FRA) is an effective diagnostic technique for
detection of mechanical deformations inside a power transformer. The results of previous …
detection of mechanical deformations inside a power transformer. The results of previous …
Comprehensive study on transformer fault detection via frequency response analysis
SEH Kakolaki, V Hakimian, J Sadeh… - IEEE Access, 2023 - ieeexplore.ieee.org
The sudden outage of a transformer due to a fault can cause irreparable damage to the
electricity industry. Hence, by conducting momentarily inspections of the transformer's …
electricity industry. Hence, by conducting momentarily inspections of the transformer's …
High frequency electric circuit modeling for transformer frequency response analysis studies
Power transformers are subject to winding and core deformations due to short circuit faults
and other environmental conditions. Majority of these faults are of progressive nature and …
and other environmental conditions. Majority of these faults are of progressive nature and …
Using lumped element equivalent network model to derive analytical equations for interpretation of transformer frequency responses
B Cheng, Z Wang, P Crossley - IEEE Access, 2020 - ieeexplore.ieee.org
Frequency Response Analysis (FRA) is regarded as the most effective technique for
detecting mechanical faults in transformer windings. However, the main challenge in …
detecting mechanical faults in transformer windings. However, the main challenge in …
Effect of different connection schemes, terminating resistors and measurement impedances on the sensitivity of the FRA method
Frequency-response analysis (FRA) is an efficient method to examine the mechanical
integrity of a power transformer. Different connection schemes can be implemented for …
integrity of a power transformer. Different connection schemes can be implemented for …
Gray box modeling of power transformer windings for transient studies
R Aghmasheh, V Rashtchi… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
For the fast transient study of power transformers, several types of models are available that
can be categorized into three groups: white box models, black box models, and gray box …
can be categorized into three groups: white box models, black box models, and gray box …
Experimental studies on monitoring and metering of radial deformations on transformer HV winding using image processing and UWB transceivers
S Mortazavian, MM Shabestary… - IEEE Transactions …, 2015 - ieeexplore.ieee.org
In this paper, a novel method based on image processing is proposed for detecting the
presence and location of mechanical deformations on an actual power transformer winding …
presence and location of mechanical deformations on an actual power transformer winding …
High-frequency ladder network synthesis of transformer winding for its mechanical condition assessment
F Ren, Z Kang, S Ji, Q Li - IEEE Transactions on Industrial …, 2022 - ieeexplore.ieee.org
Fault localization and severity evaluation of transformer winding is crucial for its mechanical
condition assessment. Ladder network synthesis of winding entity based on its frequency …
condition assessment. Ladder network synthesis of winding entity based on its frequency …
Gray box modeling of power transformer windings based on design geometry and particle swarm optimization algorithm
R Aghmasheh, V Rashtchi… - IEEE transactions on …, 2018 - ieeexplore.ieee.org
Reliable models to predict the fast transient response of transformer windings are
categorized into three groups: 1) white box; 2) black box; and 3) gray box models. Each …
categorized into three groups: 1) white box; 2) black box; and 3) gray box models. Each …
Improving the numerical indices proposed for the FRA interpretation by including the phase response
The frequency response analysis (FRA) is an effective technique to diagnose the
mechanical deformations in a power transformer. Using the numerical indices is one of the …
mechanical deformations in a power transformer. Using the numerical indices is one of the …