Electromagnetic Transient Analysis of the Influence of Voltage Grading Bands on Insulation Shield of High Voltage Current Transformer

被引：0
|
作者：
Yuan, Sifan [1 ]
Liu, Xuezhong [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian, Peoples R China
来源：
2020 8TH INTERNATIONAL ELECTRICAL ENGINEERING CONGRESS (IEECON) | 2020年
关键词：
current transformer; ATP-EMTP; extra high voltage; grading band; transient voltage;
D O I：
10.1109/iEECON48109.2020.229477
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：
There is a phenomenon that uneven voltage distribution exists on the surface of main insulation shield in the extra high voltage current transformer. The copper strips are affixed to the surface of main insulation for insuring the equivalently electrical potential. In the low and/or medium frequency, all the potential distribution mode can be effective but be ungratified in high frequency. In this paper, a circuit model of grading band with different layout modes by ATP-EMTP is build up, and the difference among them at high-frequency transient voltage as well as the influence on insulation safety is discussed finally.
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页数：4
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