Proposed A Metal-Oxide Surge Arrester Model To Improve Lightning Protection

Low , Siew Yi (2012) Proposed A Metal-Oxide Surge Arrester Model To Improve Lightning Protection. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Lightning strike is the major factor that leads to overvoltage and equipment damage in electrical power system. The metal-oxide surge arrester is one of the protective device that can be used to reduce lightning effect. This project mainly investigates the effectiveness of the developed surge arrester to improve the lightning protection quality and reduce costs of surge arrester. The crucial part of this research is calculation and adjustment of the surge arrester model parameter. In this project, lightning stroke and surge arrester are modeled. In general, the proposed metal oxide surge arrester was constructed base on IEEE Working Group (WG) 3.4.11 mode using Power System Computer Aided Design (PSCAD). In addition, the Pinceti and IEEE surge arrester model was also introduced for comparative purposes. It is found that the proposed model is the best surge arrester model when injected by 5kA and 10kA current impulse 8/20μs since it have similar value of residual voltage with manufacturer tested results. On the otherhand, the IEEE surge arrester model was found to be the most suitable model when inject 20kA and 40kA current impulse. The result from this project can be as a guideline to the surge arrester designers or electrical power engineer for improving the surge arrester performance as well as the scheme protection system.

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