#TITLE_ALTERNATIVE#

• Main Author: WAHYU PRADANA (NIM 13205137), ADITYA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/11739
• Institution: Institut Teknologi Bandung

This final project reports the investigation results of the effects of applied artificial environmental pollution on application ceramic outdoor insulator 20 kV. This insulator tested under various environmental conditions (artificial tropical climate and pollution). The samples were put in a test chamber with controlled humidity and pollution condition. AC 50Hz voltage is applied from 10-60 kV. The characteristics leakage current (LC) of ceramic outdoor insulator were analyzed. From the experiment, it was found that leakage current magnitude and waveform depend on the insulator surface. In order to improve the diagnostic tool and to deeply understand the behaviour of the leakage current on the outdoor insulators we will also proposed an equivalent electrical circuit model for modelling leakage current phenomenon on ceramic outdoor insulator under various environmental conditions. In general, the proposed equivalent electrical circuit model consists of capacitor(s), nonlinear resistor(s), and arc model(s). Both experimental and simulation results indicated that the addition of pollutant on the surface of ceramic outdoor insulator and the amount of salt in the air around it have a big effect on the leakage current characteristic of the insulator. Ceramic outdoor insulator cannot maintain its surface resistance if already polluted. This point is a really huge disadvantage for areas which have high pollution rate. Hopefully this final project can be used as a basic analysis on increasing the quality of outdoor insulator on polluted area especially in Indonesia.