Optical fiber sensor-based detection of partial discharges in power transformers

Deng, Jiangdong; Xiao, Hai; Huo, Wei; Luo, Ming; May, Russ; Wang, Anbo; Liu, Yilu

doi:10.1016/s0030-3992(01)00022-6

Cited by 106 publications

(56 citation statements)

References 16 publications

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“…Based on literature reports [1][2][3][4][5][6][7][8][9][10][11] it can be concluded that at an adequate regime of metrology, the optical spectrophotometry method not only enables for accurate detection of radiation generated by electrical discharges, but also for widely understood analysis.…”

Section: Introductionmentioning

confidence: 99%

Influence Estimation of the Voltage Value on the Measurement Results for the Optical Radiation Generated by Partial Discharges on Bushing Isolator

Frącz

2011

Acta Phys. Pol. A

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The subject area of the paper concerns determination of possibility and application scope suggestion for the optical spectrophotometry method in the linear isolators diagnosis. Measurements results of the optical radiation emitted by partial discharges generated on a model of bushing isolator, which was placed in the air, are presented in the paper. Recording was done by use of a spectrophotometer that enabled for measurement of optical radiation in the range from 250 to 1700 nm. The main aim of laboratory research works performed was to estimate the influence of the supply voltage value changes in range from 0 to 60 kV on the intensity and character of the optical radiation spectrum emitted by surface partial discharges occurring on the ceramic insulating surface of the bushing isolator. In the scope of research works, analysis of voltage value changes influence on the gathered spectra was performed while its accretion and decrease was investigated. Furthermore, the measurements and analysis performed enclose the influence estimation of the time, when the voltage was attached to the high voltage electrode, on the proceeding of the optical phenomena connected with generation of surface partial discharges. In addition a comparative analysis of measurements results gathered for two designed and implemented models of bushing insulators, which differ in geometric dimensions, was performed.

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Section: Introductionmentioning

confidence: 99%

Influence Estimation of the Voltage Value on the Measurement Results for the Optical Radiation Generated by Partial Discharges on Bushing Isolator

Frącz

2011

Acta Phys. Pol. A

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“…Apart from AE method, there may be pointed such main methods as a spectrophotometry method based on light emission (Deng et al, 2001;Frącz et al, 2012;2013;Frącz, 2013;Wang et al, 2006), thermovision method, based on heat emission, dissolved gas analysis (DGA) method, based on chemical reactions results, electrical method, based on electrical capacitance changes, transient earth voltage (TEV), based on electromagnetic radiation in high frequency range, and ultra-high frequency (UHF) method, based on radio frequency radiation. From among all those techniques only an electrical method is a PD direct measurement method, which means it delivers exact information about testing phenomena, i.e.…”

Section: Introductionmentioning

confidence: 99%

Study on Descriptors of Acoustic Emission Signals Generated by Partial Discharges under Laboratory Conditions and in On-Site Electrical Power Transformer

Kunicki¹,

Cichoń²,

Borucki³

2016

Archives of Acoustics

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An acoustic emission method (AE) is widespread and often applied for partial discharge (PD) diagnostics, mainly due to its ease of application as well as noninvasiveness and relatively high sensitivity. This paper presents comparative analysis of AE signals measurement results archived under laboratory conditions as well as on-site actual AE signals generated by inside PDs in electrical power transformer during its normal service. Three different PD model sources are applied for laboratory research: point to point, multipoint to plate and surface type. A typical measuring set up commonly used for on-site transformer PD diagnostics is provided for the laboratory tasks: piezoelectric joint transducer, preamplifier, amplifier and measuring PC interface. During the on-site research there are three measuring tracks applied simultaneously. Time domain, time-frequency domain and statistical tools are used for registered AE signals analysis. A number of descriptors are proposed as a result of the analysis. In the paper, attempt of AE signals descriptors, archived under laboratory condition application possibilities for on-site PD diagnostics of power transformers during normal service is made.

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“…Literature reports point at the following frequency bands characteristic for these phenomena: Barkhausen's acoustic eect from 10 to 65 kHz [3], magnetostriction phenomena up to 10 kHz [4], noise connected with circulation of the oil and other noises of the medium about 50 kHz [5]. Eects of these limitations are, proposed in the literature, frequency bands useful for observation of partial discharges within power transformers by means of AE method: 70 180 kHz [3,6], 100200 kHz [5], 110200 kHz [7,8] and above 500 kHz [9,10].…”

Section: Introductionmentioning

confidence: 99%

Identification of Deformation Processes within Power Oil Transformers Using Maps of ADC Descriptors in Selected Frequency Bands

Olszewska

2013

Acta Phys. Pol. A

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The paper presents identication results of deformation processes within power oil transformers where according to dissolved gas analysis investigation results partial discharges took place. The original method worked out for analysis of acoustic emission signals recorded within tested transformer and particularly maps of ADC descriptors have been applied. Analysis has been carried out within chosen frequency bands in order to distinguish signals coming from dierent sources (among other things partial discharges, Barkhausen's eect, circulation of the oil, and outer acoustic sources). One source of partial discharges has been identied within the tested transformer as a result of analysis of acoustic emission signals.

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Optical fiber sensor-based detection of partial discharges in power transformers

Cited by 106 publications

References 16 publications

Influence Estimation of the Voltage Value on the Measurement Results for the Optical Radiation Generated by Partial Discharges on Bushing Isolator

Influence Estimation of the Voltage Value on the Measurement Results for the Optical Radiation Generated by Partial Discharges on Bushing Isolator

Study on Descriptors of Acoustic Emission Signals Generated by Partial Discharges under Laboratory Conditions and in On-Site Electrical Power Transformer

Identification of Deformation Processes within Power Oil Transformers Using Maps of ADC Descriptors in Selected Frequency Bands

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