Análisis e interpretación de las pruebas eléctricas y vida útil del transformador de poder de la subestación Villa Club de Cnel Ep GLR.

Abstract

According to the manufacturers, the transformer is an electrical device designed to achieve a useful life of more than 25 years and operating at nominal values, but these can operate for many more years, depending on the annual planning of predictive and preventive maintenance and electrical tests that allow establishing the useful life status of its internal elements (oil and insulating paper), considering the different electrical faults that cause electrical, mechanical and thermal tensions within the transformer. Therefore, it is necessary for electrical distribution companies to carry out periodic test on their power transformers to evaluate their condition. The useful life of the transformer is determined by the state of the insulation system of its components. Although it is true that you can experiment and carry out tests with oil, we cannont carry out tests with paper, therefore we must estimate indirectly through some prooperties measurements in the oil. The content of this thesis details the analysis and electrical tests to know the operational status of the oil-immersed power transformers that are installed in the electrical substations of CNEL EP. The study was carried out on the power transformer with a capacity of 24-30 MVA, Teksa brand installed at the Villa Club Substation. For the evaluation, the different electrical tests, physical chemical analysis, gas chromatograph in the oil and furan in the oil were considered., applying the Ecuadorian technical standard INEN 2111:2013 and the analyzes in international standards: ANSI, IEC and IEEE.