高压电器2017，Vol.53Issue(10)：7-11,18,6.DOI:10.13296/j.1001-1609.hva.2017.10.002
高压瓷绝缘子振动疲劳试验及损伤识别
Vibration Fatigue Test and Damage Identification of High-voltage Porcelain Insulator
曹枚根 1高政国 2张健 3陈巍 2曹文典4
作者信息
- 1. 北方工业大学,北京100144
- 2. 北京航空航天大学土木工程系,北京100083
- 3. 山东泰安腾飞电力设计有限公司,山东泰安271000
- 4. 北京璟能电力科技有限公司,北京 102206
- 折叠
摘要
Abstract
High-voltage porcelain insulator is widely used in substation,and the seismic performance is very weak.Through the vibration fatigue test of three same types of post insulators,the relationship between the frequency and the load frequency is obtained.Under the action of long-term cyclic vibration load,although insulator appearance inspection is normal,the damage of the insulator is mainly due to the attenuation of flange bending stiffness,which leads to the decrease of the frequency of the insulator in different degrees.In addition,through the establishment of finite element model test of insulator structure,the first two order frequencies of the vibration modes before and after the loading of the insulator are fitted.The bending stiffness coefficient and other parameters of the insulator flange joints are obtained.This not only describes the damage of insulator,but also identifies the location and severity of the damage accurately.关键词
绝缘子/法兰/弯曲刚度/振动疲劳/损伤识别Key words
porcelain insulator/flange/flexural rigidity/vibration fatigue/damage identification引用本文复制引用
曹枚根,高政国,张健,陈巍,曹文典..高压瓷绝缘子振动疲劳试验及损伤识别[J].高压电器,2017,53(10):7-11,18,6.
