A new AC flashover model of ice-covered HV insulators based on numerical electric field analysis

被引：6
|
作者：
Yang, Q. [1 ]
Sima, W. [1 ]
Wu, K. [1 ]
Li, J. [1 ]
机构：
[1] Chongqing Univ, State Key Lab Power Transmiss Equipment Syst Secur, New Technol, Chongqing 400044, Peoples R China
来源：
IET GENERATION TRANSMISSION & DISTRIBUTION | 2008年 / 2卷 / 04期
关键词：
D O I：
10.1049/iet-gtd:20080006
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new model based on the numerical electric field analysis has been developed to predict the flashover voltage of ice-covered HV insulators, under AC voltage. By analysing the electric field and combining the U-I and re-ignition characteristics of the arc, the arc propagation process and the flashover voltage of the ice-covered insulators under AC voltage can be obtained. Moreover, the peak value of the voltage on the residual ice is calculated based on the electric field model, which can avoid the errors caused by the simplified residual ice resistance calculation methods in the mathematical model. The results obtained from the electric field flashover model have been compared with other mathematical and experimental results and got a great agreement.
引用
收藏
页码：600 / 609
页数：10
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