Authors : Tharin Ratanabuntha and Kittipong Tonmitr
Abstract: Designing of power distribution system must be simulated the flashover occurring in any case. To flashover prediction by leakage current observing, the harmonic distortion of current waveform is one factor that be considered. This study focused on insulator model improving to inclusive of harmonic distortion of leakage current in different pollution level by nonlinear resistive from arcing gap model as structure of insulator. So, the aimed to compare to the results of the primitive model and the nonlinear model that can be applied from arc characteristics divided in two parts. The part of measurement include resistance collecting and voltage current relating of insulators which were treated in different pollution levels as to very light, light, moderate and heavy pollution by different NaCl addition through soaking. The part of simulation of a string insulator with 6 series insulator by both of model. The model including nonlinear resistive can significantly generated more harmonic in order 3rd and 5th where higher pollution level different from primitive model. However, the model must be developed to generate more harmonic distortion.
Tharin Ratanabuntha and Kittipong Tonmitr, 2018. Harmonic Distortion Improving of Insulator String Model by Nonlinear Resistive under Polluted Condition. Journal of Engineering and Applied Sciences, 13: 1986-1990.