Microstructure and Degree of Degradation of ZnO Varistors in Surge Arresters Due to Operation

• Autorzy: Papliński P. , Wańkowicz J. , Ranachowski P. , Ranachowski Z.

Identyfikatory

DOI

10.24425/123800

• Języki publikacji: EN

Abstrakty

EN

The paper presents the test results for the microstructure of ZnO varistors comprising high voltage gapless surge arresters. The tests were performed on varistors produced in different periods and by various manufacturers. The research was inspired by different characteristics of changes in values of current flowing through surge arresters as a function of changes in values of system voltage in a 220 kV substation, and the temperature in a multi-year cycle. Furthermore, the effects of varistor microstructure degradation following a failure of an unsealed surge arrester were investigated. The results provided the grounds for assessment of ZnO varistor microstructure parameters in terms of their durability and resistance to degradation processes.

Słowa kluczowe

EN

surge arrester; MO varistor; microstructure of ceramics; ceramic material degradation

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 3
• Strony: 1267--1273
• Opis fizyczny: Bibliogr. 7 poz., rys., wykr.

Twórcy

autor

Papliński P.

• Institute of Power Engineering - Research Institute, 8 Mory Str., 01-330 Warsaw, Poland

autor

Wańkowicz J.

• Institute of Power Engineering - Research Institute, 8 Mory Str., 01-330 Warsaw, Poland

autor

Ranachowski P.

• Institute of Fundamental Technological Research Polish Academy of Sciences, 5b Pawińskiego Str., 02-106 Warsaw, Poland

autor

Ranachowski Z.

• Institute of Fundamental Technological Research Polish Academy of Sciences, 5b Pawińskiego Str., 02-106 Warsaw, Poland

Bibliografia

• [1] D. R. Clarke, On the equilibrium thickness of intergranular glass phases in ceramic materials, J. Am. Ceram. Soc. 85, 485-502 (1999).
• [2] L. M. Levinson, editor, Advances in Varistor Technology, Ceramic Transactions Am. Ceram. Soc. 3, (1989).
• [3] F. Greuter, G. Blatter, Electrical properties of grain boundaries in polycrystalline compound semiconductors, Semiconductors Science and Technology 5 (2), 111-137 (1990).
• [4] M. Jaroszewski, P. Kostyła, Z. Wacławek, The determination method for internal parameter values of a varistor based on the measurement of momentary current and voltage values, Przegląd Elektrotechniczny Konferencje 3, 115-116 (2007).
• [5] P. Papliński, P. Ranachowski, Testing of internal elements Surface in surge arresters, Przegląd Elektrotechniczny 5a, 73-76 (2012).
• [6] M. Pluta, Optical Microscopy, PWN, Warsaw (1982).
• [7] The method for wear condition diagnostics of surge arresters, Patent of Institute of Power Engineering - Research Institute No. 194 371 (2007).

Uwagi

PL

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