Title :
Analysis and interpretation of dissolved gases in transformer oil: A case study
Author :
Hettiwatte, Sujeewa N. ; Fonseka, H.A.
Author_Institution :
Sch. of Eng. & Energy, Murdoch Univ., Murdoch, WA, Australia
Abstract :
Condition monitoring plays a vital role in any asset management plan. Dissolved gas analysis is a routine test carried out on power transformers to monitor their condition. Four power transformers selected from a repository of power transformers due to their dissolved gas levels exceeding the normal levels are analyzed using the Key Gas Method, the Roger´s Ratio Method and the Duval Triangle Method to diagnose any faults. The results show that for some transformers all three diagnosis methods agree on the type of fault, whilst for others it is not so straightforward in diagnoses. In this study, the condition of each power transformer is predicted using the above methods.
Keywords :
condition monitoring; transformer oil; Duval triangle method; Roger´s ratio method; asset management plan; condition monitoring; diagnosis methods; dissolved gas analysis; key gas method; power transformers; transformer oil; Fault diagnosis; Gases; Monitoring; Oil insulation; Partial discharges; Power transformer insulation; Duval Triangle Method; Key Gas Method; Roger´s Ratios Method; dissolved gas analysis; power transformers;
Conference_Titel :
Condition Monitoring and Diagnosis (CMD), 2012 International Conference on
Conference_Location :
Bali
Print_ISBN :
978-1-4673-1019-2
DOI :
10.1109/CMD.2012.6416435
