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A low cost system for acoustic monitoring of partial discharge in power transformer by piezeletic sensor
(2016-07-01)
Partial discharge damages in power transformers require high cost monitoring procedures based on corrective maintenance or even interruptions of the power system. The development of online non-invasive monitoring systems ...
A Comparative Analysis Applied to the Partial Discharges Identification in Dry-Type Transformers by Hall and Acoustic Emission Sensors
(2022-03-01)
Dry-type insulated transformers stand out for their higher applicability in substations, high-voltage instrumentation systems, and electrical installations. In this machine, the insulation system is constituted of dielectric ...
Partial Discharge Detection of Transformer Bushing Based on Acoustic Emission and Current Analysis
(2021-08-05)
Partial discharge (PD) detection is one of the most important parameters which can classify the insulation condition of the distribution and power transformers. Among several components, the transformer bushing is an ...
Separation of Partial Discharges Sources and Noise Based on the Temporal and Spectral Response of the Signals
(2021-01-01)
The insulation systems of equipment, cables, and electrical machines subjected to high voltage are continuously exposed to multiple aging mechanisms of electrical, mechanical, thermal, and environmental type. Normally, a ...
Partial discharges location in transformer winding using wavelets and Kullback-Leibler divergence
(Elsevier Science Sa, 2016-07)
A new algorithm to partial discharges (PD) location in transformer windings by means of the discrete wavelets transform (DWT) and the Kullback-Leibler (KL) divergence is presented. When the insulation system of transformers ...
Análise de coeficientes wavelet para classificação de sinais acústicos de descarga parciais
(Universidade Federal de Santa MariaBrasilUFSMCentro de Tecnologia, 2023-01-10)
Insulation degradation in substation electrical equipment is a problem that
needs to be identified before the equipment is broken, in order to avoid causing an
unexpected interruption that affects the energy supply. ...