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ANALISIS KORELASI PEMBEBANAN DAN SUHU TERHADAP MASA PAKAI TRANSFORMATOR DAYA 30 MVA MENGGUNAKAN METODE SPEARMAN DI GARDU INDUK BUNGARAN PT PLN (PERSERO)

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This study shows that transformer loading has a significant relationship with operating winding temperature, with a Spearman correlation coefficient of 0.552, which falls into the strong category and is supported by a Sig. value < 0.001 and Interval of 99% in the range of 0.512–0.600. The coefficient of determination indicates that loading contributes 30.47% to changes in transformer winding temperature. Additionally, increased loading and operating temperature cause an increase in the transformer’s Loss of Life value from 0.002640% in 2021 to 0.004227% in 2025, with a total accumulation of 0.017372% or equivalent to a reduction in service life of approximately 31.36 hours from the transformer’s normal lifespan. The results of the sensitivity analysis indicate that every 1°C increase in winding temperature can increase the reduction in transformer lifespan by 0.000485% or the equivalent of approximately 0.87 hours. Therefore, the results of this study can be used as a basis for evaluating the thermal condition of transformers and supporting predictive maintenance through periodic monitoring of load and winding temperature.

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Detail Information

Series Title

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Call Number

T2007482026

Publisher

Indralaya : Prodi Teknik Elektro, Fakultas Teknik Universitas Sriwijaya., 2026

Collation

xiv, 127 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

621.312 07

Content Type

Text

Media Type

-

Carrier Type

-

Edition

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Subject(s)

Prodi Teknik Elektro
Teknik Pembangkit Listrik

Specific Detail Info

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Statement of Responsibility

MI

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