Fault anomaly detection of synchronous machine winding based on isolation forest and impulse frequency response analysis

Y Chen, Z Zhao, H Wu, X Chen, Q Xiao, Y Yu - Measurement, 2022 - Elsevier
Synchronous machine is one of the critical power generation parts in the power system. Its
stable operation ensures people's normal economic activities. Winding is an essential …

Sensitivity analysis of different components of transfer function for detection and classification of type, location and extent of transformer faults

H Tarimoradi, H Karami, GB Gharehpetian… - Measurement, 2022 - Elsevier
Frequency response analysis is one of the best methods to diagnose mechanical defects in
the power transformer winding. In this paper, sensitivity analysis of four components of the …

Diagnostic of transformer winding deformation fault types using continuous wavelet transform of pulse response

Q Cheng, Z Zhao, C Tang, G Qian, S Islam - Measurement, 2019 - Elsevier
Abstract Impulse Frequency Response Analysis (IFRA) provides an alternative technique for
detection of mechanical type faults in power transformers among researchers. However, the …

High-frequency modeling of a three-winding power transformer using sweep frequency response analysis

Y Yoon, Y Son, J Cho, SH Jang, YG Kim, S Choi - Energies, 2021 - mdpi.com
A power transformer is an essential device for stable and reliable power transfer to
customers. Therefore, accurate modeling of transformers is required for simulation-based …

Application of SFRA for diagnostics on medical isolation transformers

G Bucci, F Ciancetta, A Fioravanti, E Fiorucci… - International Journal of …, 2020 - Elsevier
Medical environments must guarantee the electrical safety of medical personnel and,
especially, of patients in contact with electro-medical devices. These environments are …

Magneto Tuning of a Ferrite Dielectric Resonator Antenna Based on LiFe5O8 Matrix

JEV De Morais, AJN De Castro, RGM Oliveira… - Journal of Electronic …, 2018 - Springer
Abstract LiFe 5 O 8 (LFO) spinel-like material has been studied for use in ferrite resonator
antennas (FRAs). Antenna parameters such as gain and return loss were greatly affected …

FRA diagnostics measurement of winding deformation in model single-phase transformers made with silicon-steel, amorphous and nanocrystalline magnetic cores

M Kuniewski - Energies, 2020 - mdpi.com
The power transformer is a key object in the electrical power system. The working principle
hasn't changed since its discovery. The main work nowadays is focused on the rising of the …

Soluzioni IoT per incrementare la resilienza dei sistemi elettrici d'utenza

A Fioravanti - 2021 - tesidottorato.depositolegale.it
Il termine resilienza rappresenta in campo elettrico la capacità del sistema a reagire di fronte
a eventi severi ea riprendere lo stato di funzionamento precedente nel minor tempo …

On the Range of Influence of Magnetic Core on Frequency Characteristics of Transformers

T Daszczyński, Z Pochanke - 2021 Progress in Applied …, 2021 - ieeexplore.ieee.org
The main problem in interpreting the results of the sweep frequency response analysis
(SFRA) diagnostic tests is the lack of measurement information on a specific type of …