高铁用27.5 kV电缆终端电场及电位仿真分析
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摘要
在中低压电缆中,电缆终端通常采用热缩模式。这种终端具有良好的收缩性能,可以和多种截面的电缆进行配合。但热缩电缆终端在高速列车车载电缆连接中应用存在一些问题需要解决。结合某一型号热缩电缆终端在高速列车使用过程中遇到的实际问题,利用计算机仿真技术对该型终端不同设计结构进行了有限元仿真计算,得到关键位置的电场以及电位分布情况,并提出一种比较适合高速列车用的热缩电缆终端结构,为该型热缩终端的设计和使用提供依据。
In medium and low voltage cables, thermal shrinkable mode is usually used in cables terminals. This kind of terminal has good shrinkable performance, and it can cooperate with a variety of cross-section cables. However, there are still some problems of heat shrinkable cable terminal need to be solved in the on-board cable connection of high-speed trains' application. Combining with the practical problems encountered in the use of a type of thermal shrinkable cable terminal in high-speed train, the finite element simulation of different design structures of the terminal is carried out by using computer simulation technology. The electric field and potential distribution at key positions are obtained, and a kind of thermal shrinkable junction structure suitable for high-speed train is proposed. It provides a basis for the design and use of this type of heat shrinkable terminal.
In medium and low voltage cables, thermal shrinkable mode is usually used in cables terminals. This kind of terminal has good shrinkable performance, and it can cooperate with a variety of cross-section cables. However, there are still some problems of heat shrinkable cable terminal need to be solved in the on-board cable connection of high-speed trains' application. Combining with the practical problems encountered in the use of a type of thermal shrinkable cable terminal in high-speed train, the finite element simulation of different design structures of the terminal is carried out by using computer simulation technology. The electric field and potential distribution at key positions are obtained, and a kind of thermal shrinkable junction structure suitable for high-speed train is proposed. It provides a basis for the design and use of this type of heat shrinkable terminal.
引文
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[3] 张荣, 徐操, 朱永华,等. 不同负载下高压直流交联聚乙烯电缆终端电场仿真计算[J]. 电线电缆,2016(2):11-15.
[4] Cavallini A, Montanri G C, Puletti F. A novel method to locate PD in polymeric cable systems based on amplitude frequency(AF) map[J]. IEEE Transcations on Dielectrics and Electric Insulation,2007,14(3):726-734.
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