DocumentCode :
3335860
Title :
Condition assessment of 500/150 kV power transformer based on condition based maintenance
Author :
Wardani, N.U.A. ; Purnomoadi, A.P. ; Septiani, H.I. ; Arifianto, I. ; Cahyono, B.
Author_Institution :
Transm. Syst. Dept., Jakarta, Indonesia
fYear :
2011
fDate :
17-19 July 2011
Firstpage :
1
Lastpage :
4
Abstract :
Maintenance on high Voltage/Extra High Voltage equipment can be divided into preventive maintenance and corrective maintenance. Mostly, the cost for doing a corrective maintenance is much higher than the preventive maintenance, beside of when an equipment break down, it will cause another problem such as customer dissatisfaction. These reasons bring the consequence to any electricity utility like PLN P3B Jawa and Bali to do a reliable preventive maintenance. There are two types of preventive maintenance, e.g. scheduled maintenance and condition based maintenance. For years, most of the maintenance methods were done under scheduled maintenance (oil replacement, shutdown inspection/measurement, etc), but this method is less cost-efficient and less reliable on preventing the failure. The time interval in scheduled maintenance is based on the statistical data, which usually came from the factory recommendation (with some safety factor) or based on PLN P3B Jawa Bali experience, while the time interval in condition based maintenance is based upon the degradation of some parameters of the equipment. So, the knowledge of condition degradation on an equipment is important in condition based maintenance. This paper will present about condition assessment on power transformer as a part of condition based maintenance process. The causal method based on FMEA and FMECA of power transformer will be discussed first to get the information about critical component and the suitable monitoring needed at sub system levels. The next part will explain about how to compile the maintenance data into a management report which mainly giving the information whether the power transformer is in good/deteriorated or already in bad condition. The data presented here are based on 500/150 kV power transformer in P3B Jawa Bali.
Keywords :
electrical safety; power transformers; preventive maintenance; FMEA; FMECA; PLN P3B Jawa Bali experience; condition assessment; condition based maintenance; corrective maintenance; customer dissatisfaction; electricity utility; equipment break down; factory recommendation; high voltage-extra high voltage equipment; oil replacement; power transformer; preventive maintenance; safety factor; scheduled maintenance; shutdown inspection-measurement; statistical data; time interval; voltage 150 kV; voltage 500 kV; Indexes; Inspection; Insulators; Maintenance engineering; Oil insulation; Power transformer insulation; Condition Assessment; Condition based Maintenance; Power transformer;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Engineering and Informatics (ICEEI), 2011 International Conference on
Conference_Location :
Bandung
ISSN :
2155-6822
Print_ISBN :
978-1-4577-0753-7
Type :
conf
DOI :
10.1109/ICEEI.2011.6021600
Filename :
6021600
Link To Document :
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