Title :
Study of an Assessment Method for the Reliability of Tap-changers in Power Transformer Based on Fault-Tree Analysis
Author :
You-yuan, Wang ; Jing-jing, Zhou ; Wei-gen, Chen ; Lin, Du ; Ren-gang, Chen ; Liang, Zhang ; Song Wei-guang
Author_Institution :
State Key Lab. of Power Transm. Equip.&Syst. Security & New Technol., Chongqing Univ., Chongqing, China
Abstract :
Based on the further analysis of typical failure modes and influences of tap-changers in power transformer, the fault-tree of tap-changers is set up by using fault-tree analysis(FTA) techniques and the assessment method for the reliability of tap-changers, combined with the index of the importance and the method of Improved Analytic Hierarchy Process(IAHP), is put forward. The assessment examples show the method can deduct the failure modes of tap-changers clearly, meanwhile, find out the weaknesses in time during the operation and get better assessment results.
Keywords :
fault trees; on load tap changers; failure modes; fault-tree analysis; improved analytic hierarchy process; power transformers; tap-changer reliability; Contacts; Failure analysis; Oil insulation; Power system analysis computing; Power system reliability; Power system security; Power system stability; Power transformers; Switches; US Department of Transportation;
Conference_Titel :
High Voltage Engineering and Application, 2008. ICHVE 2008. International Conference on
Conference_Location :
Chongqing
Print_ISBN :
978-1-4244-3823-5
Electronic_ISBN :
978-1-4244-2810-6
DOI :
10.1109/ICHVE.2008.4774008