Investigation on Fault Arc Energy under Different Load Based on the New Time Varying Resistance Fault Arc Model

doi:10.11930/j.issn.10.11930.2015.11.49

Abstract

Abstract: Electrical fire accidents frequently occurred in low voltage distribution systems of buildings are mainly caused by fault arc. The occurrence frequency and severity of electrical fires depend on energy generated by fault arc. Based on dynamic variation characteristics of circuit, a new time-varying resistance model of fault arc is proposed. Furthermore, fault arc voltage and current under different loads are obtained by using proposed model. Changes of fault arc energy under different load are discussed; and the relationship between fault arc energy and power factor is investigated. The results show that fault arc energy increases with increasing of active power and decreasing of power factor, which associated with high possibility of electric fires.

Key words: arc model, fault, load characteristic, arc energy, power factor, electrical fire

CLC Number:

TM713

ZHENG Mengdi, WU Xixiu, YAN Ge. Investigation on Fault Arc Energy under Different Load Based on the New Time Varying Resistance Fault Arc Model[J]. journal1, 2015, 48(11): 49-53.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.11.49

https://www.electricpower.com.cn/EN/Y2015/V48/I11/49

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