TITLE:
Magnetic Force Simulation of Cables in Microgrid during Faults
AUTHORS:
Bin Sun
KEYWORDS:
Microgrid Simulation, Magnetic Force Simulation, Fault, Cable, PSCAD, COMSOL
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.8 No.12,
December
21,
2020
ABSTRACT: 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 fields surrounding the cables
are different depending 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
protecting technologies can be studied.