Determination of the percent loss of life of the power transformer rated below 100MVA at Padre Garcia substation done by National Electrification Administration (NEA)

Date

4-2014

Degree

Bachelor of Science in Electrical Engineering

Major Course

Major in Power Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Rodolfo A. Aguirre, Jr.,

Abstract

Power transformers play a vital role in efficiently transferring electrical energy to long destinations. However, as the transformer operates, power losses in the form of heat are also generated. The heat produced by these energy losses results to deterioration of the paper insulation in the transformer windings. As time pass by, the cumulative effect of these insulation deteriorations will cause the whole transformer unit to collapse. Transformer failures due to insulation problems may cause severe damage to the whole power system like the 300 MVA transformer explosion in Dasmariñas substation on November 2013. To avoid situations like his, it is advisable to monitor the useful life of the power transformer. In this study, the transformer life is determined through Percent Loss of Life (PLL). The useful life of the power transformer of Padre Garcia substation is determined from the start of its energization to its future operation. The determination of the PPl is based on IEEE Standard C57.92-1991, "Guide for Loading Oil-immersed transformers". Power demand, which is the key parameter in obtaining PLL, was projected using Holt-Winters multiplicative forecasting method. The effect of different consumer load curves to PLL was also investigated. It was found that in each consumer load curve, the proximity to the peak load has greater impact than the load factor. In connection with this, it was found out that the power transformer of Padre Garcia Substation will collapse on August 2023 with an accumulated PLL of 101.44%

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993 2014 E64 /G35

Document Type

Thesis

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