Title :
Noninvasive on-line condition monitoring of on load tap changers
Author :
Kang, Pengju ; Birtwhistle, David ; Daley, John ; Mcculloch, David
Author_Institution :
Res. Concentration in Electr. Energy, Queensland Univ., Brisbane, Qld., Australia
Abstract :
The paper describes a condition monitoring and diagnostic monitoring system developed for power transformer on-load-tap-changers (OLTCs). The system has been installed in distribution substations to continuously monitor the operation of OLTCs on 33/11 kV power transformers. The field trials have demonstrated that the system can provide reliable indication regarding the actual condition of OLTC contacts. Also presented in the paper are the details about an industry survey on failure modes of commonly used OLTCs in Queensland electricity transmission and supply industries
Keywords :
computerised monitoring; condition monitoring; failure analysis; fault location; power transformer testing; 11 kV; 33 kV; Australia; OLTC contacts; Queensland; diagnostic monitoring system; distribution substations; electricity supply industries; electricity transmission industries; failure modes; industry survey; noninvasive on-line condition monitoring; on load tap changers; power transformer; Aging; Circuit faults; Condition monitoring; Electrical equipment industry; Electricity supply industry; Maintenance; On load tap changers; Petroleum; Power transformer insulation; Power transformers;
Conference_Titel :
Power Engineering Society Winter Meeting, 2000. IEEE
Print_ISBN :
0-7803-5935-6
DOI :
10.1109/PESW.2000.847701
