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     Research Journal of Applied Sciences, Engineering and Technology

    Abstract
2015(Vol.10, Issue:6)
Article Information:

Modelling the Effects of Leakage Current Resistance in Transmission Line

Saraa I. Khalel and M.F. Rahmat
Corresponding Author:  Saraa I. Khalel 
Submitted: ‎February ‎13, ‎2015
Accepted: March ‎1, ‎2015
Published: June 20, 2015
Abstract:
Determining the mechanisms and influences of leakage current resistance that results power loss in transmission line is an outstanding quest. Perfect insulations are pre-requisite for electrical systems to achieve maximum efficiency. The level of insulator contamination determines the loss enhancement in power transmission systems mediated by leakage current. This phenomenon in turn changes the physical characteristics of the insulation through the enhancement of resistance. In this study, we propose a new model using MATLAB to examine the effect of leakage current resistance on the short and medium transmission lines of five buses. Three levels of leakage resistance (high, medium and low) are incorporated into the model through delta-star/star-delta conversion and two-port network concept. The input impedances for the load flow equations are updated. Results show that the leakage current resistance mediated via the deposition of the pollution on the transmission line plays a major role in the power loss. The amount of power losses and the cost factor in the presence of leakage can be estimated with this model our simplified model to examine the effects of leakage current in power transmission lines may be useful for loss minimization and remedy.

Key words:  Insulator, leakage current, modelling, transmission line, , ,
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Cite this Reference:
Saraa I. Khalel and M.F. Rahmat, . Modelling the Effects of Leakage Current Resistance in Transmission Line. Research Journal of Applied Sciences, Engineering and Technology, (6): 716-722.
ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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