Magnetic Force Simulation of Cables in Microgrid during Faults

• 作者: Bin Sun
• 来源期刊: 电力能源(英文)
• 学科: 地球科学
• 关键词: Microgrid Simulation Magnetic Force Simulation FAULT CABLE PSCAD COMSOL
• 年，卷（期）: dlnyyw_2020,（12）
• 页码范围: 1-12
• 页数: 12页
• 分类号: P31

摘要

In recent years, more and more electric utilities are using underground cables to distribute electric power rather than overhead transmission line. However, the cost of installation and maintenance of underground cables is very expensive. Thus, the proper design and damage prediction of cables are crucial. This paper is focused on the magnetic force waveforms simulation of cables under different types of faults using PSCAD and COMSOL. The results show that three-phase fault leads to the largest magnetic forces and the maximum magnitude of the forces in the x-direction is about 2.5 N. Also, the magnetic field</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> surrounding the cables are different depend</span><span style="font-family:Verdana;">ing</span><span style="font-family:Verdana;"> on the arrangements of cables buried method. Although the magnitude is small, considering the long distance and long operating time of underground cables, the forces between cables can cause failures under some conditions. In the future, more types of faults such as high impedance fault and different protect</span><span style="font-family:Verdana;">ing</span><span style="font-family:Verdana;"> technologies can be studied.