Power Transformer's Technical Condition Assessment by Dissolved Gas Analysis Considering Unit's Current Working Life Parameter

Electrical and Control Technologies 2008 : Proceedings of the 3rd International Conference on Electrical and Control Technologies (ECT-2008) 2008
Jānis Dainis Dirba, Sandra Vītoliņa

Classification of the most commonly used dissolved gas analysis (DGA) data interpretation methods is given in this paper as well as causes for developing new methods are analyzed. Comparative diagnostic criterion is proposed which is based on typical gas concentration typical level for separate groups of power transformers with varied current age. Transformers’ grouping principle and analysis of typical gas concentration of several representative DGA data samples are the main points of case study in which 224 power transformers with the voltage 110 kV in Latvian transmission network are reviewed.

Keywords
diagnostics, dissolved gas analysis (DGA), power transformers, reliability

Dirba, J., Vītoliņa, S. Power Transformer's Technical Condition Assessment by Dissolved Gas Analysis Considering Unit's Current Working Life Parameter. In: Electrical and Control Technologies 2008 : Proceedings of the 3rd International Conference on Electrical and Control Technologies (ECT-2008), Lithuania, Kaunas, 8-9 May, 2008. Kaunas: Technologija, 2008, pp.241-247. ISSN 1822-5934.

Publication language
English (en)