Electric Field Calculation of Dry DC Bushing under Complicated Voltage

被引：0
|
作者：
Wen Miao [1 ]
Lin Xin [1 ]
Shen Wen [1 ]
Ji Tian [1 ]
机构：
[1] Shenyang Univ Technol, Sch Elect Engn, Shenyang 110870, Liaoning Provin, Peoples R China
来源：
2013 2ND INTERNATIONAL CONFERENCE ON ELECTRIC POWER EQUIPMENT - SWITCHING TECHNOLOGY (ICEPE-ST) | 2013年
关键词：
electric field calculation; DC bushing; polarity reversal; insulation properties;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The converter transformer bushing is one of the key devices in high voltage direct current (HVDC) system, which has a complex insulation system. To comprehensively evaluate the insulation properties of +/- 600 kV dry DC bushing, a finite element model is built and the electric field distributions under complex voltage are calculated. Results show that: the electric field concentrates more in the epoxy resin under AC voltage while concentrates more in the SF6 gas under DC voltage. Space charge will accumulate in the DC field, which can lead a tremendous change of electric field under the polarity reversal voltage. During the polarity reversal process, the maximum values of electric field in different materials appear depend on their material properties. Electric field calculation can provide advice to the insulation design of DC dry bushing.
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页数：4
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