Experimental test on corona characteristics of rigid jumper for 1 000 kV UHVAC double circuit transmission lines on the same tower

被引：0
|
作者：
Quan, Shanshan [1 ]
Xie, Liang [1 ]
Gu, Lili [1 ]
Cao, Jing [1 ]
Peng, Zongren [2 ]
Chen, Xiaohai [3 ]
机构：
[1] China Electric Power Research Institute, Wuhan 430074, Hubei Province
[2] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi Province
[3] Wuhan Power Supply Company, Wuhan 430015, Hubei Province
来源：
Dianwang Jishu/Power System Technology | 2014年 / 38卷 / 03期
关键词：
Corona test; Double-circuit on the same tower; Electric field calculation; Finite element method; Fittings; Rigid jumper; UHV;
D O I：
10.13335/j.1000-3673.pst.2014.03.039
中图分类号：
学科分类号：
摘要：
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.
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页码：802 / 806
页数：4
相关论文
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