Analysis of Ionizing Radiation Generated by Partial Discharges

Zmarzły, D.; Nagi, Łukasz; Borucki, S.; Boczar, T.

doi:10.12693/aphyspola.125.1377

Cited by 20 publications

(13 citation statements)

References 5 publications

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“…Accordingly, the following diagnostic methods for insulating systems have been developed: invasive and non-invasive electrical methods [3][4][5][6][7][8][9][10][11] ; gas chromatography; wideband methods: UHF (ultra high frequency) or VHF (very high frequency) [12][13][14] ; the acoustic emission (AE) method [15][16][17][18][19][20][21][22][23][24][25] ; and optical spectrophotometry [26][27][28][29][30] . The subject area of this paper covers improving the AE method applications.…”

Section: Acoustic Emissionmentioning

confidence: 99%

“…Considerable interest in the AE method was observed in the 1960s, when the method was applied in studies of the PD phenomenon [31][32] . Studies involving perfecting the AE method applied to diagnose high-voltage insulating systems in power transformers have been carried out by many scientific and research centres [15][16][17][18][19][20][21][22][23][24][25][33][34] . However, diagnostic measurements related to applying the method for insulating systems in power capacitors are much narrower in scope.…”

Section: Acoustic Emissionmentioning

confidence: 99%

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Application of a mobile system in diagnostics of power capacitors using the acoustic emission method

Błachowicz¹,

Boczar²,

Wotzka³

2016

Insight

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in the fields of informatics, electronics and electrical engineering. He obtained a PhD degree in engineering sciences and electrical engineering in 2014 from Opole University of Technology, Poland. The main objective of the work he has undertaken is diagnostics of the partial discharge (PD) effect occurring in medium voltage power capacitors. The work carried out also covers the modelling process for the phenomenon of acoustic emission generated by PDs. a PhD degree in electrical engineering from the Silesian University of Technology, Institute of Electrical Power Engineering, Gliwice, Poland. At the present time he is engaged in different applications of the acoustic emission method and other non-destructive methods, particularly in diagnostics of the insulation set-ups of electric appliances. In these fields he has published more than 300 journal and conference papers, five monographs and three books. Currently, he is a lecturer and research worker at Application of a mobile system in diagnostics of power capacitors using the acoustic emission method This paper presents the results obtained from measurements and analyses of acoustic emission (AE) signals generated by partial discharges (PD) in a model of power capacitors during experiments carried out under laboratory conditions.A remotely-controlled mobile unit (RCMU) has been used in experimental tests, allowing the safe execution of measurements in hazardous conditions. The measurement set-up and construction of the RCMU is presented. The study confirmed that it is possible to use a remotely-controlled mobile unit for carrying out measurements under high voltage.The most significant contribution of the paper lies in the idea that the PD of a condenser for electric power is detected using a mobile system, which can also be applied for other purposes related to the non-destructive diagnosis of power equipment systems working under difficult operating conditions.

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Section: Acoustic Emissionmentioning

confidence: 99%

Section: Acoustic Emissionmentioning

confidence: 99%

Application of a mobile system in diagnostics of power capacitors using the acoustic emission method

Błachowicz¹,

Boczar²,

Wotzka³

2016

Insight

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“…Clamp-on highfrequency current transformers (HFCTs) are mostly used for diagnostic purposes if no bushing tap measurement or coupling capacitors are available. Furthermore, emission of light and ionizing radiation [6,7] can be used for PD diagnostic purposes. Usually, in the case of power transformers, the structure and the available measurement devices limit the application of these measurement techniques.…”

Section: Introductionmentioning

confidence: 99%

Calibration Proposal for UHF Partial Discharge Measurements at Power Transformers

Siegel¹,

Coenen

Beltle

et al. 2019

Energies

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The continuous, non-intermitted service of electrical grids relies on the reliability of their assets, e.g., power transformers. Local insulation defects can result in serve failures such as breakdowns with severe subsequent costs. The prevention of such events is crucial. Hence, partial discharge (PD) activity at power transformers is evaluated directly in the factory before shipment. Additionally, PD activity can be monitored during service using the ultra-high frequency (UHF) method. In this contribution, a calibration procedure is proposed for the UHF method. The calibration process is required to ensure both, reproducibility and comparability of UHF measurements: Only a calibrated UHF measurement procedure can be introduced supplementary to IEC 60270 in acceptance tests of power transformers. The proposed calibration method considers two factors: The influence of the UHF-antenna's sensitivity and the PD recorder characteristics including accessories such as cable damping, pre-amplifier, etc. The former is addressed by a characterization of UHF sensors using the standard antenna factor (AF) in a gigahertz transverse electromagnetic (GTEM) cell. The PD recorder's influence is corrected by using a defined, invariable test signal as reference for all recording devices. A practical evaluation of the proposed calibration procedure is performed in a laboratory setup using different UHF recording devices and UHF sensors using artificial PD signals and real voltage-driven PD sources.

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“…PD detection is proved to be one of the most effective insulation condition monitoring tools. There are many well-known and widespread PD detection methods but only electrical method (EM) supports a calibrated apparent charge measurement [4][5][6][7][8][9]. Measurement methodology and procedures are described in IEC 60270 standard.…”

Section: Introductionmentioning

confidence: 99%

Comparison of capacitive and inductive sensors designed for partial discharges measurements in electrical power apparatus

Kunicki

2017

E3S Web Conf.

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Abstract. In the paper results of simultaneously conducted measurements achieved using capacitive and inductive sensors are presented according to different PD model sources immersed in a mineral transformer insulation oil. All measurements are preceded under laboratory conditions using typical measurement set up commonly applied for on-site PD detection: measuring impedance and capacitor and high frequency current transformer (HFCT) are used respectively. Measuring frequency and voltage level influence as well as phase resolved PD patterns analysis are investigated in the research. Various fundamental PD signal descriptors assigned for selected frequencies are also proposed and compared for chosen sensors. The main purpose of the presented research is to compare PD measurement results achieved using selected type of sensors during laboratory measurements and to point the best application areas in fields of PD detection in high voltage apparatus under normal operating conditions. Furthermore a proper measurement results interpretation coming from different sensors as well as measurement conducting problems and achieved patterns disparities are also discussed in the paper.

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Analysis of Ionizing Radiation Generated by Partial Discharges

Cited by 20 publications

References 5 publications

Application of a mobile system in diagnostics of power capacitors using the acoustic emission method

Application of a mobile system in diagnostics of power capacitors using the acoustic emission method

Calibration Proposal for UHF Partial Discharge Measurements at Power Transformers

Comparison of capacitive and inductive sensors designed for partial discharges measurements in electrical power apparatus

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