Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
PRADINA SAPUTRI, NIKEN
Fernandes, Alex
Subject
Teknik Elektro
Datestamp
2022-11-03 03:40:30
Abstract :
The need for electrical energy is getting higher every year, therefore reliability is
needed in distributing electrical energy to consumers, to realize this reliability,
electrical equipment that can work properly is needed so that there are no obstacles in
the operating system, one of the electrical equipment that has a very important role very
important in a steam power plant is the generator, along with the age of use of the
generator which has been more than 20 years at the Ombilin PLTU, there must be some
obstacles including its isolation which can cause current leakage and total damage to
the generator. The purpose of the dielectric test. This research was conducted to predict
the remaining life of the generator due to dielectric problems that occur in the
insulation system by conducting dielectric tests and finding solutions to extend the life
of the generator. The method used in this study using the D-MAP method with the
formula used from the values obtained in dielectric testing, such as tan delta testing,
leakage current testing, and partial discharge testing. The results of this dielectric test
get a breakdown voltage of 42.48% and get a prediction of the remaining life of the
generator for another 4 years. And to improve the breakdown voltage value, a revarnish
is carried out to improve the partial discharge value