THERMAL SCIENCE
International Scientific Journal
MONITORING AND DIAGNOSTICS OF POWER TRANSFORMER INSULATION
ABSTRACT
Liberalization of the energy market drives utilities to a more cost-effective power system. Power transformers are the most complex, important, and critical components of the transition and distribution power systems. Insulation system is the key component of life extension, better availability and higher reliability of a transformer. In order to achieve both decreasing operational cost and reliable service condition-based maintenance is needed. Monitoring and diagnostics methods and techniques, for insulation condition assessment of power transformers, are described. Date base and knowledge rules diagnostics management system, in internet oriented environment, is outlined. .
KEYWORDS
PAPER SUBMITTED: 2006-12-04
PAPER REVISED: 2006-12-07
PAPER ACCEPTED: 2006-12-14
THERMAL SCIENCE YEAR
2006, VOLUME
10, ISSUE
Issue 4, PAGES [43 - 54]
- An International Survey on Failures of Large Power Transformers in Service, CIGRE Working Group 12.05, Electra, No.88, 1983.
- IEEE Guide for application of Monitoring to Liquid-Immersed Transformers and Components, IEEE PC57.XXX Draft 9, March 2001.
- Evaluation and qualification of electrical insulation systems, IEC Committee, Tech. Rep. 98/60 505/Ed. 2,1998.
- T. K. Saha et al. Electrical and chemical diagnostics of transformer insulation part A: Aged transformer samples, IEEE Trans. Power Delivery, Vol. 12, pp 1547-1554, Oct. 1997.
- J. P. van Bolhuis et al. Monitoring and Diagnostic of Transformer Solid Insulation, IEEE Trans. Power Delivery, Vol. 17, pp 528-536, Apr. 2002.
- D. S. Kovacevic et al. Improvement and new methods development of insulation system conditions diagnostics of power and instrument transformers, Nikola Tesla Institute, Project report No. 210185, National energy efficiency program, Belgrade, 2005. (in Serbian language).
- D. S. Kovacevic et al. Data and knowledge base development of transformer oil diagnostics, Proceed. of 27. Juko Cigre Congress, R A2-10, Zlatibor, Serbia, 2005. (in Serbian language).
- S. Tenbohlen et al. Experience-based Evaluation of Economic Benefits of On-line Monitoring Systems for Power Transformers, CIGRE Session 2002, paper 12-110, Paris, 2002.