Analysis of the spectrum of electromagnetic radiation generated by electrical discharges

Nagi, Łukasz; Kozioł, Michał; Wotzka, Daria

doi:10.1049/iet-smt.2018.5414

Cited by 16 publications

(11 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Corona activity tends to degrade insulating materials, mostly due to the fast oxidation [26] induced by high-energy species and the ozone generated during the discharge process, which can increase the electrical conductivity of the insulating material and compromise their performance. Electrical discharges also produce electromagnetic radiation, covering visible light, UV, and high-energy ionizing radiation [27]. Partial discharges themselves are among the primary sources of electrical insulation degradation [28] which can lead to early insulation failure in power cables [29].…”

Section: Corona Effect and Arc Trackingmentioning

confidence: 99%

Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

Riba

Gómez-Pau

Moreno-Eguilaz

2020

Sensors

View full text Add to dashboard Cite

Visual corona tests have been broadly applied for identifying the critical corona points of diverse high-voltage devices, although other approaches based on partial discharge or radio interference voltage measurements are also widely applied to detect corona activity. Nevertheless, these two techniques must be applied in screened laboratories, which are scarce and expensive, require sophisticated instrumentation, and typically do not allow location of the discharge points. This paper describes the detection of the visual corona and location of the critical corona points of a sphere-plane gap configurations under different pressure conditions ranging from 100 to 20 kPa, covering the pressures typically found in aeronautic environments. The corona detection is made with a low-cost CMOS imaging sensor from both the visible and ultraviolet (UV) spectrum, which allows detection of the discharge points and their locations, thus significantly reducing the complexity and costs of the instrumentation required while preserving the sensitivity and accuracy of the measurements. The approach proposed in this paper can be applied in aerospace applications to prevent the arc tracking phenomenon, which can lead to catastrophic consequences since there is not a clear protection solution, due to the low levels of leakage current involved in the pre-arc phenomenon.

show abstract

Section: Corona Effect and Arc Trackingmentioning

confidence: 99%

Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

Riba

Gómez-Pau

Moreno-Eguilaz

2020

Sensors

View full text Add to dashboard Cite

show abstract

“…In the study, an optical method was used to detect and identify partial discharges in insulators of equipment and power cables [14]. This method is often combined with others using different ranges for the detection of electromagnetic radiation emitted from PDs [15,16]. Research on arcs and preceding corona discharges (CDs) is also important in aeronautics.…”

Section: Introductionmentioning

confidence: 99%

Optical Radiation from an Electric Arc at Different Frequencies

2020

Self Cite

View full text Add to dashboard Cite

The article presents research on the electric arc generated by AC current at different frequencies. The measurement procedure and system are described. Optical spectra of the generated arc in the air were recorded using a spectrophotometer. Optical spectra for five frequencies were obtained. The article also presents the energy balance of the components of the registered spectrum. The visible changes in the spectra that depend on the frequency of the AC current generating the electric arc can be significant to the diagnostics of gas insulators. The research presented in the article can be used in multiple areas of technology where an electric arc is used. The influence of the frequency of the current supplying the electric arc on the electromagnetic radiation spectrum in the area of light radiation emitted by the electric arc allows for the construction of systems that can shape the desired characteristics of the electric arc.

show abstract

“…The measurement systems and methodology are presented, e.g., in [16,17]. The electromagnetic radiation coming from PD is also registered in the Ultra high frequency (UHF) range [18] and high ionizing energies [19,20]. Not only measuring devices, systems, and methods, but also all kinds of descriptors have been developed to assess the damage in both liquid and gas and solid insulators.…”

Section: Introductionmentioning

confidence: 99%

Electrical Strength of Natural Esters Doped by Iron Nanopowder in a Hydrophobic Carbon Shell

Nagi¹,

Płużek²

2020

Materials

Self Cite

View full text Add to dashboard Cite

The paper presents the results of measurements of electrical strength of Midel 1204 natural ester doped with iron nanopowder in a hydrophobic carbon shell. The research was conducted for different concentrations of the dopant. The samples were prepared in the High Voltage Technique Laboratory. After mixing, they were tightly closed, and the first measurements were taken after 5 weeks of dissolution of the dopant in liquid. The tests were repeated after another 2 weeks and 3 weeks of dissolution of nanoparticles. An increase in both mean and maximum breakdown voltage was shown for the tested liquid mixtures. The concentration for which the value of electrical strength begins to decrease was indicated. It was also shown that a longer time of dissolution of nanoparticles causes an increase in the electric strength value for the tested samples.

show abstract

Analysis of the spectrum of electromagnetic radiation generated by electrical discharges

Cited by 16 publications

References 38 publications

Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

Optical Radiation from an Electric Arc at Different Frequencies

Electrical Strength of Natural Esters Doped by Iron Nanopowder in a Hydrophobic Carbon Shell

Contact Info

Product

Resources

About