Analysis of The Power Transformer Condition Assessment in PLN Western Java Transmission Unit Zainal Arifin (a)(b), Nuniek Yuli Utami (a)(c*)
a) Institut Teknologi PLN
b) PT. PLN (Persero)
c) PT. PLN (Persero) Western Java Transmission Unit
*nuniek.yu[at]pln.co.id
Abstract
The reliability of the electric power system is very vital in big cities, especially in Jakarta. Jakarta is the capital of the State of Indonesia which is a reflection of Indonesia, Jakarta is also a metropolitan city that full of various activities that require electricity. Therefore the reliability of the equipment in a substation must be maintained so that there is no blackout due to equipment damage. One important and very expensive equipment in the substation is transformer. Transformer condition assessment method needs to be analyzed to maintain and know the condition and determine the priority of the correct time and or replacement of the transformer. So that, damage caused by transformer failure can be avoided. In this paper, analysis of transformer condition assessment uses various methods combined through several stages. The output are a priority condition and recommendation for power transformer. First method is health index, based on data of inspection level 1,2,3. Then, health index will be combined with the value of susceptibility / risk factor which will result in risk assessment. Then, the risk assessment value is combined with the substation criticality level so that it will produce a risk based priority of individual assets.
Keywords: Power Transformer, Assessment Condition, Health Index
