Study on different types of surge arrester for 132kV overhead transmission line in shielding failure analysis

Anies Syahirah , Zainol (2014) Study on different types of surge arrester for 132kV overhead transmission line in shielding failure analysis. Project Report. UTeM. (Submitted)

Text STUDY ON DIFFERENT TYPES OF SURGE ARRESTER FOR 132kV OVERHEAD TRANSMISSION LINE IN SHIELDING FAILURE ANALYSIS 24pages.pdf Download (217kB)

Abstract

Transients overvoltage caused by lightning is considered a major source of disturbances in high voltage transmission line systems. Lightning that consume an extreme high density of current, high capacity of voltage and transient electric discharge occurred on the transmission lines that travel towards the terminal or substation may lead to severe damages, particularly to the expensive electrical equipment. When the transient overvoltage due to lightning occurred at the phase conductor of the transmission line, the phenomena called shielding failure. Study on the shielding failure is crucial in order to evaluate the performance of transmission line as the lightning strokes terminate on the phase conductor of the transmission line. Metal Oxide Surge Arrester is used to limit the voltage across the equipment terminals in the presences of a surge on the system. In this project, the transmission line, lightning strike and surge arrester are modelled using PSCAD software. Three different types of surge arrester are modelled which are the IEEE model, Pincetti model and Fernandez Diaz model. It is found that the IEEE model is the best surge arrester model when injected more than 10KA current impulses of 8/20us since it have almost similar value of the residual voltage with the manufacture data tested result. The IEEE model was selected to apply to the 132kV transmission line in order to evaluate shielding failure phenomena. The result obtained show that the IEEE model succeeds to provide the optimum protection to the 132kV transmission line during lightning strike.

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