Rahman Azis Prasojo, Indra Kurniawan, Didik Fauzi Dakhlan, Ika Sudarmaja, Wisnu Fitri Praditama, Liska Safarina
Power transformers are critical component of electric power systems and are expensive assets. The insulation system of power transformers is an essential factor in determining their lifespan. Aging of the transformer paper insulation is an irreversible process, and it is considered as the end-of-life criteria. In recent years, CIGRE TB 761 has published guidelines for transformer paper insulation assessment using multiple parameters to calculate a single index. This study aims to implement the CIGRE TB 761 method on power transformers under the UIT-JBM population. This will allow comparison of solid insulation indices from 357 power transformers. The paper discusses the methodology and presents the results of the assessment of the transformer paper insulation. The study then analyses the correlation between each testing parameters and combined paper insulation index with transformer operating age. © 2023 IEEE.
Politeknik Negeri Malang, Electrical Engineering Department, Malang, Indonesia; PT. Pln (Persero), Sidoarjo, Indonesia