Study on Electric Field Distribution of Cage-type Rigid Jumper for 500 kV AC Transmission Lines

被引：0
|
作者：
Cai, Haohui [1 ]
Peng, Zongren [1 ]
Yang, Xi [1 ]
机构：
[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China
来源：
2012 IEEE 10TH INTERNATIONAL CONFERENCE ON THE PROPERTIES AND APPLICATIONS OF DIELECTRIC MATERIALS (ICPADM) | 2012年
关键词：
cage-type rigid jumper; electric field; finite element method; corona; extra-high voltage;
D O I：
暂无
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：
Cage-type rigid jumper is an essential connecting component on extra-high voltage (EHV) transmission lines, but with a more serious distortion of surface electric field than straight bundled conductor due to its complex structure and bending. In order to optimize the structure for a jumper with less corona loss, distribution of electric field on the surface of such a jumper is modeled and studied. In this paper, three-dimensional finite element method is applied to simulate the electric field distribution on the surface of quad bundle cage-type rigid jumper on 500kV AC transmission lines; the external diameter of and space between sub-jumpers are varied to observe the changes in electric field as a function of jumper structural dimensions. Three conclusions are obtained: the maximum intensity of electric field increases with the whole curvature of the jumper; the maximum intensity of electric field decreased with the external diameter of sub-jumpers; the intensity as a function of sub-jumper spacing appears to be a U profile. These conclusions could provide reference to the design of extra-high voltage and ultra-high voltage transmission lines.
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页数：4
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