Effect of specimen configuration on deterioration of silicone rubber for polymer insulators in salt fog ageing test

Marungsri, Boonruang; Shinokubo, H.; Matsuoka, Ryosuke; Kumagai, Seiji

doi:10.1109/tdei.2006.1593411

Cited by 54 publications

(16 citation statements)

References 8 publications

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“…The diameter of the largest craters was on the order of 50 mm (Figure 4 (b) and (c)), the same as that found in [18]. These craters might be caused by local discharges [17,18].…”

Section: Sem and Edx Analysissupporting

confidence: 64%

Surface degradation of styrene acrylonitrile exposed to corona discharge

Handala

Lamrous

2007

Int Trans Elec Energy Syst

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SUMMARYAn experimental investigation of the degradation of styrene acrylonitrile (SAN) exposed to corona discharge under ambient conditions was presented. SAN specimens were subjected to a corona stress generated by two plane parallel electrodes. The surface physicochemical changes were studied using scanning electron microscope, energy-dispersive X-ray analysis, Fourier transformed infrared spectroscopy and surface resistance measurements.The results showed significant damage on the specimen' surface caused by the corona discharge. Surface erosion was seen in the micrographs and colour change was observed on the aged surface.The surface resistance dropped rapidly during the first hours of exposure to the corona discharge, then approached a saturation value asymptotically. It was established that hydrophilic hydroxyl (O-H) and carbonyl (C --O) groups have formed on the surface of the aged sample. Moisture adsorbed by the hydrophilic OH groups plays an important role in the decrease of the surface resistance, as, under dry conditions after removal from the corona discharge, the surface resistance increased and tended to recover its original value.

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“…The diameter of the largest craters was on the order of 50 mm (Figure 4 (b) and (c)), the same as that found in [18]. These craters might be caused by local discharges [17,18].…”

Section: Sem and Edx Analysissupporting

confidence: 64%

Surface degradation of styrene acrylonitrile exposed to corona discharge

Handala

Lamrous

2007

Int Trans Elec Energy Syst

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“…Therefore, it is essential to investigate the process and mechanism of rime-ice flashover phenomena for the reliable application of composite insulators in such severe climate conditions. Besides the flashover voltage, the LC is one of the most widely used investigating methods for outdoor insulator, which effectively provides the valuable information of the insulator performance [5,[12][13][14][15][16][17][18][19]. Based on the temporal analysis of LC, the peak recording, surge counting and charge measurement have been employed for the investigation [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Recurrent plot analysis of leakage current on flashover performance of rime-iced composite insulator

Liu

2010

IEEE Trans. Dielect. Electr. Insul.

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Due to the wide application of composite insulators in the power industry, the insulator performance is challenged by various environments. To determine the flashover performance of rime-iced composite insulator, laboratory investigation was carried out in an artificial climate chamber to simulate different rime-ice morphology on the insulator surface. The configuration and characteristics of the rime-ice were demonstrated to establish the relationship between the rime-ice parameters and the flashover performance. In accordance with the discharge phenomena, the transition of leakage current (LC) until the flashover was analyzed by using a recurrent plot approach. After extracting the high frequency components by using a wavelet transform technique, the LC just before the flashover was extended to m dimensional phase space based on a phase space reconstructed method. The recurrent plot was obtained to reveal the non-linear characteristics of LC for identifying the dynamic behaviors on the insulator surface. It is shown that the propagation and properties of the discharges can be graphically projected on the topological structure of recurrent plot as a function of the rime-ice parameters. The process and underlying mechanism of flashover performance of rime-iced composite insulator can be visually reflected by the recurrent plot and the quantitative indicators of LC.Index Terms -composite insulator, rime-iced condition, flashover, leakage current, recurrent plot, dynamic behavior.

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“…Laboratory tests in high voltage fog chambers, especially the chambers with a salty fog are conducted quite often [5,6]. A thousand hour test in the salty fog has been standardized and is required in designing of tests for composite insulators [7].…”

Section: Introductionmentioning

confidence: 99%

Test method of composite insulators aged in high voltage rain chamber

Bretuj

Fleszyński

Wieczorek

2010

2010 International Conference on High Voltage Engineering and Application

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Rainfall can be a dangerous hazard for outdoor composite insulators. In the paper, a laboratory method of testing of ageing resistance of aerial composite insulators exposed to high voltage and water, simulating heavy rainfall, is presented. The method is illustrated by the results which show the impact of shed profile of the composite insulator with the housing made from silicone rubber on their aging resistance.

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Effect of specimen configuration on deterioration of silicone rubber for polymer insulators in salt fog ageing test

Cited by 54 publications

References 8 publications

Surface degradation of styrene acrylonitrile exposed to corona discharge

Surface degradation of styrene acrylonitrile exposed to corona discharge

Recurrent plot analysis of leakage current on flashover performance of rime-iced composite insulator

Test method of composite insulators aged in high voltage rain chamber

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