2021
DOI: 10.1049/hve2.12081
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Classification of partial discharge severities of ceramic insulators based on texture analysis of UV pulses

Abstract: Inspection of partial discharge before contamination flashover is of great importance for preventing exterior insulation accidents. In this study, a new method for identification of discharge severities is proposed. Specifically, a low-cost ultraviolet (UV) sensor detection system was combined with time-frequency method, texture analysis and support vector machine (SVM) classifier to classify partial discharge severities for ceramic insulators. The visible images and the root-mean-square value of leakage curre… Show more

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Cited by 14 publications
(6 citation statements)
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“…Based on this, the UV detection images when G i = 75% were obtained by adjusting gains of UV imagers G i in the laboratory environment with good visibility, a temperature of 292.15 K, and an atmospheric pressure of 0.9895 atm, as shown in Figure 6. In accordance with the facular areas S ECoro , S ECg and S EZt at the discharge points detected by the three types of UV imagers, the radiant fluxes Φ ECoro , Φ ECg and Φ DZt of the 240-280 nm band of the UV imagers at the discharge points could be obtained by use of Equations ( 9)- (11). Specific results are listed in Table 3.…”
Section: Application Of the Consistency Methods For Uv Detection Resultsmentioning
confidence: 99%
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“…Based on this, the UV detection images when G i = 75% were obtained by adjusting gains of UV imagers G i in the laboratory environment with good visibility, a temperature of 292.15 K, and an atmospheric pressure of 0.9895 atm, as shown in Figure 6. In accordance with the facular areas S ECoro , S ECg and S EZt at the discharge points detected by the three types of UV imagers, the radiant fluxes Φ ECoro , Φ ECg and Φ DZt of the 240-280 nm band of the UV imagers at the discharge points could be obtained by use of Equations ( 9)- (11). Specific results are listed in Table 3.…”
Section: Application Of the Consistency Methods For Uv Detection Resultsmentioning
confidence: 99%
“…Some methods for detecting composite insulators using UV imaging technology were proposed in [7][8][9][10]. The local discharge intensity of ceramic insulators was classified by combining the UV detection system with time-frequency method, texture analysis, and a support vector machine classifier [11]. Meanwhile, the correspondence between UV signals and different discharge faults was established.…”
Section: Introductionmentioning
confidence: 99%
“…PD activity is typically detected using radio interference voltage (RIV) detectors, electromagnetic PD detectors, sound level meters [ 38 ] or radio frequency [ 39 ], and ultrahigh frequency antennas [ 40 , 41 ]. Surface PD activity can also be detected using optical methods [ 37 , 42 , 43 , 44 ], such as optical spectrophotometers [ 45 ], due to the ultraviolet (UV) and visible light emissions.…”
Section: Introductionmentioning
confidence: 99%
“…Electric power grids are responsible for supplying electricity to the consumer with security and reliability. Many distribution networks are installed outdoors without insulation on the conductors; thus, these networks become vulnerable to environmental conditions [1]. A major problem of electrical power systems installed outdoors is the presence of contaminants, which accumulate on the structures and increase the conductivity of the insulating components [2].…”
Section: Introductionmentioning
confidence: 99%