Evolution mechanism of disasters of power grid equipment under typhoon

doi:10.16265/j.cnki.issn 1003-3033.2021.11.025

Abstract

Abstract: In order to solve the serious destruction to power grid equipment caused by typhoon, disasters of power grid equipment and its elements were defined based on disaster system theory, and interaction mechanism of disaster-forming environments, disaster-causing factors, disaster-bearing body was analyzed. On this basis, disaster process and failure mode were revealed, and a coupled hierarchy model of influence factors of typhoon disasters was established based on DEMATEL-ISM. The results show that typhoon disasters of power grid equipment mainly destroy the transformer, transmission line, tower and insulator by the way of mechanical overload, windage flashover, erosion corrosion and flood inundation, lightning overvoltage. And their evolution process features obvious disaster chain and hierarchy relationship, which reveals compound disaster mode from natural disasters to technology accidents of power grid.

Key words: typhoon, power grid equipment, evolution mechanism of disasters, failure mode, decision making trial and evaluation laboratory-interpretative structural modeling(DEMATEL-ISM)

CLC Number:

X934

ZHANG Jinjia. Evolution mechanism of disasters of power grid equipment under typhoon[J]. China Safety Science Journal, 2021, 31(11): 179-184.

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