Impulse characteristics of 24 kV overhead line pin insulators

被引：0
|
作者：
Taklaja, Paul [1 ]
Hyvonen, Petri [1 ]
Niitsoo, Jaan [1 ]
Palu, Ivo [1 ]
Kluss, Joni [2 ]
机构：
[1] Tallinn Univ Technol, Dept Elect Power Engn, Ehitajate Tee 5, EE-19086 Tallinn, Estonia
[2] Aalto Univ, Dept Elect Engn, Espoo 02150, Finland
来源：
2013 12TH INTERNATIONAL CONFERENCE ON ENVIRONMENT AND ELECTRICAL ENGINEERING (EEEIC 2013) | 2013年
关键词：
Insulator; flashover; breakdown; lightning stroke; volt-time characteristic;
D O I：
暂无
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
One of the main characteristics of the distribution grid is the reliability of medium voltage overhead lines which can be improved by appropriate insulation coordination. This paper assesses common insulator types in Estonia. Old glass pin insulators and newly installed porcelain pin insulators were tested against different lightning overvoltages (impulse flashovers) in order to determine their volt-time characteristics. Test results show convincingly that the new porcelain pin insulators can be easily physically broken when stressed by lightning impulses. This can lead to the numeral increase of outages in medium voltage overhead lines in the distribution grid.
引用
收藏
页码：545 / 549
页数：5
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