A Method to Estimate Leakage Current of Polluted Insulators

• Autorzy: Xia Y. , Jiang X. , Sun C. , Dong B.

Warianty tytułu

PL

Metoda określana prądu upływu zabrudzonych izolatorów

• Języki publikacji: EN

Abstrakty

EN

The effects of the applied voltage(U), equivalent salt deposit density (�PESDD) and relative humidity density(RH) on the leakage current (LC) are studied based on the least squares algorithm (LSA) in this study. Experiments' results show that, the maximal amplitude of LC Ih increases with the increase of �PESDD by an power function with a positive index 0.451, while increases with the increase of both U and RH by an exponential function with a positive index 0.017 for U and 9.751 for RH. The result can be used to evaluate the pollution condition of insulators based on LC.

PL

Zbadano prąd upływu zabrudzonych izolatorów uwzględniając przyłożone napięcie, względne zasolenia i względna wilgotność. Stwierdzono, że prąd upływu rośnie wraz z zasoleniem ze współczynnikiem potęgowym 0.45.

Słowa kluczowe

EN

leakage current; insulator; equivalent salt deposit density; relative humidity density; least squares algorithm

PL

prąd upływu; izolator

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2012
• Tom: R. 88, nr 3b
• Strony: 161--164
• Opis fizyczny: Bibliogr. 19 poz., schem., tab., wykr

Twórcy

autor

Xia Y.

autor

Jiang X.

autor

Sun C.

autor

Dong B.

• The State Key Laboratory of Power Transmission Equipment & System Security and New Technology, College of Electrical Engineering, Chongqing University, Zhengjie Street 174, Shapingba District, Chongqing, 400030, China,

Bibliografia

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• [3] Zhang Z., Jiang X., Chao Y., Sun C., Hu J., Influence of Low Atmospheric Pressure on AC Pollution Flashover Performance of Various Types of Insulators, IEEE Trans. Dielectr. Electr. Insul., 17(2010), No.2, 425-433
• [4] Jiang X., Shi Y., Sun C., Zhang Z., Evaluating the Safety Condition of Porcelain Insulators by the Time and Frequency Characteristics of LC Based on Artificial Pollution Tests, IEEE Trans. Dielectr. Electr. Insul., 17(2010), No.2, 481-488
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• [14] Li J., Sima W., Sun C., Use of Leakage Currents of Insulators to Determinethe Stage Characteristics of the Flashover Processand Contamination Level Prediction, IEEE Trans. Dielectr. Electr. Insul., 17(2010), No. 2, 490-501
• [15] Li J., Sun C., Sebo S.A., Humidity and contamination severity impact on the leakage currents of porcelain insulators, IET Gener. Transm. Distrib., 5(2011), No.1, 19-28
• [16] Suda T., Frequency Characteristics of Leakage Current Waveforms of Artificially Polluted Suspension insulators, IEEE Trans. Dielectr. Electr. Insul., 8(2005), No.4, 705-709
• [17] Gouda O.E., Amer G.M., Factors Affecting The Leakage Current Bursts Of High Voltage Polluted Insulators, IEEE Conf. Universities Power Engine., Tainan, China, 2004, 114-117,
• [18] IEC 60507, Artificial Pollution Tests on High-Voltage Insulators to be Used on A. C. Systems, 1991
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