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Abstract
Varistors are commonly used elements which protect power supply networks against high-voltage surges or lightning. Therefore, quality and endurance of these elements is important to avoid losses when an expensive laboratory equipment would not be protected from random overvoltages. Additionally, excessive leakage currents generate serious costs due to high energy consumption. The paper presents shortly properties of varistors that comprized different ZnO grain types and can have various quality which changes continuouslyduring exploitation (due to exposition to overheating and overvoltage pulses. Therefore, it is important to monitor varistors during their ageing (causing changes within their microstructures). A few methods of varistor property diagnosis were considered and compared with the methods currently applied in laboratory or industry applications. A new measurement (diagnostic) system that can monitor varistors during ageing and can be widely applied in power networks is presented. The proposed system fulfills requirements of the industrial customers which demand various methods for power line protection. The proposed system can be simply developed into a more advanced wireless diagnostic system of long power supply lines.
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.2478/v10178-012-0034-7
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
Metrology and Measurement Systems
no. XIX,
pages 395 - 404,
ISSN: 0860-8229 - Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Smulko J., Olesz M., Hasse L., Kaczmarek L., Lentka G.: Problems of varistor quality assessment during exploitation// Metrology and Measurement Systems. -Vol. XIX, nr. No. 2 (2012), s.395-404
- DOI:
- Digital Object Identifier (open in new tab) 10.2478/v10178-012-0034-7
- Verified by:
- Gdańsk University of Technology
Referenced datasets
- dataset Impedance spectra of ZnO varistor type 440 model A ver. M
- dataset Impedance spectra of ZnO varistor type 280 model O M ver. 89
- dataset Impedance spectra of ZnO varistor type 680 model A M ver. 93
- dataset Impedance spectra of ZnO varistor type 680 model O M ver. 65 13
- dataset Impedance spectra of ZnO varistor type 680 model A M ver. xx
- dataset Impedance spectra of ZnO varistor type 280 model A ver. M
- dataset Impedance spectra of ZnO varistor type 280 model 0 ver. 89
- dataset Impedance spectra of ZnO varistor type 280 model O ver. 68
- dataset Impedance spectra of ZnO varistor type 440 model O ver. 68
- dataset Impedance spectra of ZnO varistor type 680 model O M ver. 65 60
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