采用有限元法搭建交联聚乙烯电力电缆二维模型,对其进行电场仿真;将在线监测装置置于不同位置,在不同电压激励下观察电力电缆的电场分布.结果表明:在线监测装置对电缆的电场影响较为严重,尤其是罗氏线圈离绝缘末端越近,影响越大.该结果为电力电缆的电场分析以及在线监测装置的布置提供了理论依据.
A 2D model of cross-linked polyethylene power cables was built using finite element method, and the electric field was simulated. The electric field distribution of the power cables under different voltages was observed by on-line monitoring device which was placed at different positions. The results show that the on-line monitoring device has obvious influences on the electric field of the cables, in par-ticular, the closer is the rogowski coil to insulation end, the greater the effects are, which provide theoret-ical basis for the electric field analysis of power cables and the arrangement of on-line monitoring de-vice.
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