Online Frequency Response Analysis of Electric Machinery through an Active Coupling System Based on Power Electronics

Sant’Ana, Wilson Cesar; Lambert‐Torres, Germano; Bonaldi, Erik Leandro; Gama, Bruno Renó; Zacarias, Tiago Goncalves; Areias, Isac Antônio dos Santos; Arantes, Daniel de Almeida; Assuncao, Frederico de Oliveira; Campos, Mateus Mendes; Steiner, Fabio M.

doi:10.3390/s21238057

Cited by 13 publications

(9 citation statements)

References 46 publications

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“…It consists of the comparison of two spectra (of an electrical parameter of the device under test) measured at different instants of the lifetime of the device and differences between the spectra may indicate the onset of a failure [ 93 ]. Apart from its use in transformers (in which case its use is guided by the standard IEEE-Std-C57.149 [ 94 ]; several types of commercial equipment are available in the market for this purpose [ 95 ]) some other innovative applications for FRA have been proposed as well. Among them, recently, Zacarias et al [ 96 ] proposed using FRA to detect failures in arresters.…”

Section: Resultsmentioning

confidence: 99%

A Bibliometric and Comprehensive Review on Condition Monitoring of Metal Oxide Surge Arresters

Zacarias,

Sant’Ana

2023

Sensors

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This paper presents a literature review on the subject of Condition-Based Maintenance of surge arresters. Both a bibliometric analysis and traditional comprehensive research are presented. The bibliometric analysis is useful for obtaining insights about the literature. It quantitatively highlights relationships between journals, authors and keywords (related to the monitoring methods) and reveals future trends for research based on the timeline of the keywords. The traditional comprehensive literature review is also presented. It summarizes the methods, their advantages and disadvantages and also points to some known measurement issues of the methods. Both online (leakage current, harmonic components, temperature, partial discharges, power loss and the counting of discharges) and offline (reference voltage, residual voltage, insulation resistance, polarization/depolarization, return voltage, microscopy, spectrometry, X-ray, RUS and the recent application of FRA) methods have been qualitatively analyzed.

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Section: Resultsmentioning

confidence: 99%

A Bibliometric and Comprehensive Review on Condition Monitoring of Metal Oxide Surge Arresters

Zacarias,

Sant’Ana

2023

Sensors

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“…The main issue concerning online operation is the supply voltage, which may damage the electronics of the FRA equipment. The literature on the use of FRA on electric machinery (transformers, motors and generators) has presented some efforts related to this adaptation (using a coupling system, either passive [ 45 ] or active [ 33 ]). In both cases, the coupling system acts as a high pass filter, allowing the high frequency of the FRA to be injected into the device under test and, at the same time, blocking the supply voltage to avoid damage to FRA electronics.…”

Section: Discussionmentioning

confidence: 99%

“…Frequency Response Analysis (FRA) has been widely used for offline diagnostics of transformers. For this purpose, it is a well-known technology and has several commercial equipment options available in the market [ 33 ]. Some other interesting applications of FRA have been proposed as well, such as condition monitoring of rotating machines [ 34 ] (although some issues with influence of rotor position have been reported in [ 35 ] and in [ 36 ]), detection of failures in tap changers [ 37 ] and detection of fluid degradation [ 38 ].…”

Section: Methodsmentioning

confidence: 99%

“…The current flowing through the arrester under test is measured indirectly using a shunt resistor (

). Based on the amplitude of the signal

(

) and on the amplitude of the signal resulting from the subtraction of

from

(

), the magnitude of the impedance Z of the arrester can be determined as Equation ( 1 ) [ 33 ]. Also, based on the phase of the signal

(

) and on the phase of the signal resulting from the subtraction of

from

(

), the phase angle of the impedance Z (

) of the arrester can be determined as Equation ( 2 ).…”

Section: Methodsmentioning

confidence: 99%

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Detection of Failures in Metal Oxide Surge Arresters Using Frequency Response Analysis

Zacarias

Martins²,

Xavier³

et al. 2023

Sensors

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This work presents an innovative application of Frequency Response Analysis (FRA) in order to detect early degradation of Metal Oxide Surge Arresters (MOSAs). This technique has been widely used in power transformers, but has never been applied to MOSAs. It consists in comparisons of spectra, measured at different instants of the lifetime of the arrester. Differences between these spectra are an indicator that some electrical properties of the arrester have changed. An incremental deterioration test has been performed on arrester samples (with controlled circulation of leakage current, which increases the energy dissipation over the device), and the FRA spectra correctly identified the progression of damage. Although preliminary, the FRA results seemed promising, and it is expected that this technology could be used as another diagnostic tool for arresters.

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“…The coupling is designed to minimise the impedance overlap between coupling and motor. An active coupling technology is introduced in [48] to avoid the direct connection between measurement equipment and power cord. In this way, the impedance overlap between coupling and motor is avoided.…”

Section: Fra Applied To Rotating Machinesmentioning

confidence: 99%

A Review of Broadband Frequency Techniques for Insulation Monitoring and Diagnosis in Rotating Electrical Machines

Ruiz-Sarrio,

Antonino-Daviu,

Navarro-Navarro

et al. 2024

IEEE Trans. on Ind. Applicat.

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Rotating electrical machines greatly suffer from insulation degradation and failure. The adoption of wide bandgap semiconductors in Variable-Frequency Drives (VFDs) hinder the utilization of traditional techniques such as on-line Partial Discharges (PD) to monitor and diagnose the insulation status and failure. Alternative techniques exploiting the broadband frequency behaviour of machine windings, and the increased high-frequency content of VFD excitation arise as a valid alternative. The present work provides a comprehensive analysis and review of cutting-edge broadband frequency techniques aimed to diagnose winding insulation degradation and faults. First, the broadband nature of machine windings is illustrated by explaining the per-turn equivalent circuit and the physical interpretation of its parameters. Then, the different insulation monitoring and diagnosis methods are thoroughly reviewed. The analysed methods include the Frequency Response Analysis (FRA) applied to rotating electrical machines, the analysis of Common Mode (CM) broadband impedance and parasitic capacitances, and methodologies based on the analysis of transient high-frequency current ringing. Specific focus is placed on the instrumentation, which often represents the main applicability limitations.

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Online Frequency Response Analysis of Electric Machinery through an Active Coupling System Based on Power Electronics

Cited by 13 publications

References 46 publications

A Bibliometric and Comprehensive Review on Condition Monitoring of Metal Oxide Surge Arresters

A Bibliometric and Comprehensive Review on Condition Monitoring of Metal Oxide Surge Arresters

Detection of Failures in Metal Oxide Surge Arresters Using Frequency Response Analysis

A Review of Broadband Frequency Techniques for Insulation Monitoring and Diagnosis in Rotating Electrical Machines

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