电网技术Issue(3)：802-806,5.DOI:10.13335/j.1000-3673.pst.2014.03.039
1000 kV交流同塔双回输电线路刚性跳线电晕特性
Experimental Test on Corona Characteristics of Rigid Jumper for 1 000 kV UHVAC Double Circuit Transmission Lines on the Same Tower
全姗姗 1谢梁 1谷莉莉 1曹晶 1彭宗仁 2陈小海3
作者信息
- 1. 中国电力科学研究院，湖北省 武汉市 430074
- 2. 西安交通大学 电气工程学院，陕西省 西安市 710049
- 3. 武汉供电公司，湖北省 武汉市 430015
- 折叠
摘要
Abstract
Due to interaction among electric fields the corona discharge is more hazardous for the secure operation of 1 000 kV UHVAC double circuit transmission lines on the same tower. The computational results of electric fields of jumpers and fittings for the demonstration project of 1 000 kV UHVAC double circuit transmission lines on the same tower show that the structure of the jumper and fittings should be optimized. To obtain the corona discharge characteristics of optimized jumper and fittings, the experimental investigation for corona discharge characteristics of cage-type and aluminum tube-type of rigid jumpers with different structures is carried out by ultraviolet imager to find the jumpers and fittings with obvious discharge traces to determine the discharge position and the trail value of corona inception voltage. Three-dimensional finite element method is utilized to establish the simulation model to calculate electric field strength and analyze the reason to lead to corona. Results of this research not only validates the effectiveness of the research approach for corona discharge characteristics, but also shows that the optimized jumpers and fittings can effectively decrease the electric field strength and well prevent the occurrence of corona. According to the research results, the recommended rigid jumpers and the matched connecting fittings can meet the operational requirement of UHVAC double circuit transmission lines on the same tower and have been applied in the design and construction of the demonstration project.关键词
特高压/同塔双回/刚性跳线/金具/电晕试验/有限元法/电场计算Key words
UHV/double-circuit on the same tower/rigid jumper/fittings/corona test/finite element method/electric field calculation分类
信息技术与安全科学引用本文复制引用
全姗姗,谢梁,谷莉莉,曹晶,彭宗仁,陈小海..1000 kV交流同塔双回输电线路刚性跳线电晕特性[J].电网技术,2014,(3):802-806,5.
