TECHNICAL CONDITION ASSESSMENT METHODS FOR POWER TRANSFORMER MONITORING SYSTEM

Authors

  • Ivan Vasylovych Prytyskach Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського», Ukraine https://orcid.org/0000-0002-1892-0054

DOI:

https://doi.org/10.20535/1813-5420.0.2014.151730

Keywords:

monitoring, power transformer, state assessment, electricity supply system, thermal model

Abstract

Malfunction of power transformers directly affect the reliability of the power system as a whole, which explains the high demands placed on their reliability. To detect defects in transformers at an early stage of development the most effective are continuous monitoring system that evaluates the current state. This article examines the possibility of using different models of the physical processes that affect the state of the transformer as part of the monitoring system. The most commonly damaged part is transformer insulation system that suffers from the thermal, electrical and mechanical influences. To assess the aging of insulation the most important parameter is the temperature of the hot spots. As thermal model for use in the monitoring of power transformer may be proposed a model described in the standard IEC and IEEE, and a more accurate models described in the modern works.

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