Influence of the shape of composite insulators housing on their aging resistance in presence of high DC voltage and clean fog

• Autorzy: Wieczorek K.

Identyfikatory

DOI

10.15199/48.2018.10.19

Warianty tytułu

PL

Wpływ kształtu osłon izolatorów kompozytowych na ich odporność starzeniową w obecności wysokiego napięcia stałego i czystej mgły

• Języki publikacji: EN

Abstrakty

EN

The increased interest in transmission of electricity by using high DC voltage forced the need to examine the ageing resistance of silicone rubber insulators exposed to high DC voltage. Under operating conditions, in the presence of a high DC voltage due to electrostatic phenomena is observed even a fourfold increase in the accumulation of contaminants on the surface of the insulator compared to the high AC voltage. Lack of crossing zero values by current and voltage curves favors to the maintenance of surface discharges concentrated especially in the presence of water. In the paper tests results of the model composite insulators with different inclination of upper surface sheds in the clean fog chamber under high DC voltage is described. The aim of the research is to recognition of degradation ageing process of composite insulators electric properties and the phenomena of leakage current development. Laboratory test results allow to inference about the influence of the shape and design parameters of sheds on the behavior of the silicone composite insulators in operation. ().

PL

W artykule przedstawiono wyniki rozkładów napięcia na połączonych w łańcuch izolatorach: kompozytowym na 110 kV i pojedynczym izolatorze kołpakowym pokrytym warstwą silikonu RTV. Zasymulowano zmianę właściwości powierzchniowych izolatorów w czasie eksploatacji. Stwierdzono, że dołączenie do izolatora kompozytowego niewielkiego izolatora ceramicznego, powleczonego silikonem RTV, w istotny sposób łagodzi występującą na izolatorze kompozytowym nierównomierność rozkładu napięcia.

Słowa kluczowe

EN

composite insulator; high DC voltage; fog chamber; aging; leakage current

PL

izolator kompozytowy; wysokie napięcie stałe; starzenie; prąd upływu

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2018
• Tom: R. 94, nr 10
• Strony: 81--84
• Opis fizyczny: Bibliogr. 21 poz., rys., tab., wykr.

Twórcy

autor

Wieczorek K.

• Politechnika Wrocławska, Katedra Podstaw Elektrotechniki i Elektrotechnologii, ul. Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

Bibliografia

• [1] Liu H., Cash G. A., Sovar R. D., George G. A., Birtwhistle D. , Studies of the diffusion of LMW silicone fluids on polluted HV silicone insulators. I. Use of diffuse reflectance FTIR, IEEE Trans. Dielectr. Electr. Insul, (2006), Vol. 13, No.4, 877-884,
• [2] Swift D .A., Spellman C., Haddad A., Hydrophobicity transfer from silicone rubber to adhering pollutants and its effect on insulator performance, IEEE Trans. Dielectr. Electr. Insul, (2006), Vol. 13, No. 4, 820-829
• [3] Jia Z., Gao H., Guan Z., Wang L., Yang J., Study on hydrophobicity of RTV coatings based on a modification of absorption and cohesion theory, IEEE Trans. Dielectr. Electr. Insul, (2006), Vol. 13, No. 6, 1317-1324
• [4] Karady G. G. , Flashover Mechanism of non-ceramic insulators, IEEE Trans. Dielectr. Electr. Insul, (1999), Vol. 6, No. 5, 718-723
• [5] Kim S.H. , Cherney E.A. , Hackam R. , Suppression mechanism of leakage curren on RTV coated porcelain and sillicone rubber insulators, IEEE Trans. on Power Delivery, (1991), Vol. 6, No. 4, 1549-1555
• [6] Cherney E.A. , RTV silicone - a high tech solution for a dirty insulator problem, IEEE Electrical Insulation Magazine, (1995), Vol. 11, No. 6, 8-14
• [7] Gorur R.S., Cherney E.A., Hackam R., The AC and DC performance of polymeric insulating materials under accelerated aging in a fog chamber, IEEE Transactions on Power Delivery, (1988), Vol. 3, No.4, 1892- 1899
• [8] Wańkowicz J. , Operational experience with the composite insulators in high voltage overhead lines and coated with RTV silicone elastomer in Poland (in Polish), VI Symposium Maintenance Problems of High Voltage Insulation Systems EUI 97, (1997), 419-425
• [9] Xiong Y., Rowland S. M., Robertson J., Hoffmann S. , Characterization of Field-Aged 400 kV Silicone Rubber Composite Insulators, Ed. 2006 IEEE: 2006 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, (2006), 417-420
• [10] Gubanski S., Sweadish Research on the Application of Composite Insulators in Outdoor Insulation, IEEE Electrical Insulation Magazine, (1995), Vol.11, No 5, 24-31
• [11] El-Hag A.H., Jayaram S.H., Cherney E.A., Effect of insulator profile on aging performance of silicone rubber insulators in salt-fog, IEEE Trans. Dielectr. Electr. Insul,(2007), Vol. 14, No. 2, 352-359
• [12] Fleszyński J., Pohl Z., Różecki S., The need to optimize the shape and electrical design parameters of composite insulators, Przegląd Elektrotechniczny, (2006), Vol. 1, 75-78
• [13] Bretuj W., Fleszyński J., Tymań A., Accelerated aging tests of composite insulators in the rain chamber, (in Polish), Electrical Review, (2002), Vol. 10, 26-29
• [14] Ghunem R. A., Jayaram S.H., Cherney E.A., Erosion of Silicone Rubber Composites in the AC and DC Inclined Plane Tests, IEEE Trans. Dielectr. Electr. Insul,(2013), Vol. 20, No. 1, 229-236
• [15] CIGRE 518, Working Group C4.303, Outdoor Insulation in Polluted Conditions: Guidelines for Selection and Dimensioning. Part 2:The DC case, , December 2012.
• [16] Morshuis P. , Cavallini A . , Fabiani D., Montanari C. G., Azcarraga C., Stress Conditions in HVDC Equipment and Routes to in Service Failure, IEEE Trans. Dielectr. Electr. Insul,(2015), Vol. 22, No. 1, 81 - 91
• [17] CIGRE Working Group 15. 4 , Development of a test technique to assess of polymer’s long term ability to suppress leakage current under high voltage and low conductivity salt fog conditions, Electra, (2002),No.201, 8-19
• [18] El -Hag A.H. , Jayaram S.H. , Cherney E.A. , Influence of shed parameters on the aging performance of silicone rubber insulators in salt-fog, IEEE Trans. Dielectr. Electr. Insul, (2003), Vol. 10, No. 4, 655-664
• [19] Marungsri B., Shinokubo H., Matsuoka R., Kumagai S. , Effect of specimen configuration on deterioration of silicone rubber for polymer insulators in salt fog ageing test, IEEE Trans. Dielectr. Electr. Insul,(2006), Vol. 13, No. 1, 129-138
• [20] STRI Guide 92/1: Hydrophobicity Classification Guide
• [21] Bretuj W. , Fleszyński J., Tyman A., Wieczorek K. , Effect of silicone rubber insulators profiles on aging performance in rain conditions, 15th International Symp. On High Voltage Eng., Ljubljana, Slovenia, (2007), Paper T4-258, 170

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).