Partial discharge activity in oil - paper insulated system under DC superimposed AC and harmonic voltage

• Autorzy: Zhenquan S. , Chaomin G. , Xufeng Z. , Yanming L.

Warianty tytułu

PL

Wyładowania niezupełne w izolacji papierowo-olejowej przy napięciu DC oraz składowej AC

• Języki publikacji: EN

Abstrakty

EN

In the present study, the partial-discharge activity under nonstandard voltage formed by ac, harmonic, and dc voltages was studied. It is identified that the negative dc voltage superposed with ac and high frequency harmonic enhances the discharge activity in the medium and if the negative dc voltage is superposed with ac and low frequency harmonic, it can mitigate the discharge activity. The signal of the partial discharges in oil-paper insulated systems under the composite voltage formed by dc superposed with ac and harmonic voltages, has a dominant frequency content at around 20 MHz.

PL

Analizowano wyładowania niezupełne przy niestandardowych napięciach złożonych z napięć AC i DC. Stwierdzono, że obecność napięcia stałego zwiększa prawdopodobieństwo wyładowań. Zbadano wyładowania niezupełne w izolacji papierowo-olejowej.

Słowa kluczowe

EN

harmonic voltage; composite voltage; oil-paper insulated system; partial discharge; electrical technology

PL

izolacja olejowo-papierowa; wyładowania niezupełne; elektrotechnika

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2011
• Tom: R. 87, nr 7
• Strony: 199--201
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Zhenquan S.

autor

Chaomin G.

autor

Xufeng Z.

autor

Yanming L.

• State Key Laboratory of Electrical Insulation and Power Equipment,

Bibliografia

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• [3] Derler J. Kirc, Ch. Krause and E. Schneider, "Development of a design method for insulating structures exposed to electric stress in long oil gap along oil/transformer board interfaces", 7th Intern. Sympos. High Voltage Eng., Dresden, Germany, pp. 73-76, 1991.
• [4] IEEE Trial use standard generał reguirements and test code for oil immersed HVDC converter transformers, IEEE Std C57.129-1999, IEEE USA
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• [7] U. Fromm, "Interpretation of partial discharges at DC voltage", IEEE Trans. Dielectr. Electr. Insul., Vol. 2, pp. 761-769, 1995.
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• [9] S. Wenrong, L. Junhao, Y. Peng, H. Haibo and L. Yanming, "Digital detection, grouping and classification of partial discharge signals at DC voltage", IEEE Trans. Dielectr. Electr. Insul., Vol. 15, pp.1663-1674,2008.
• [10] IEC Publications 60270, "Partial discharge measurements" 3rd ed. 2000.