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首页> 外文期刊>IEEE Transactions on Electromagnetic Compatibility >FDTD Analysis of the Electric Field of a Substation Arrester Under a Lightning Overvoltage
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FDTD Analysis of the Electric Field of a Substation Arrester Under a Lightning Overvoltage

机译:雷电过电压下变电站避雷器电场的FDTD分析

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摘要

The electric field in and around a 2.6-m-long substation arrester, on which a 1 MV lightning impulse is imposed, has been analyzed using the finite-difference time-domain (FDTD) method. The arrester is represented as a combination of 10 mm × 10 mm × 10 mm cubic cells, each of which has a nonlinear resistivity (or conductivity) in each of the , and -directions, dependent on the electric field in each direction. This simple representation requires no iterative procedure, and is suitable and useful for the FDTD simulation of an overvoltage-imposed arrester. The transient electric field in and around the overvoltage-imposed arrester, and the spatial distributions of vertical and radial electric fields along the surface of the arrester are shown. The influence of a shield ring is also shown.
机译:已经使用有限差分时域(FDTD)方法分析了一个2.6米长的变电站避雷器及其周围的电场,在该电场上施加了1 MV的雷电冲击。避雷器表示为10 mm×10 mm×10 mm立方晶胞的组合,每个晶胞在每个方向上都具有非线性电阻率(或电导率),具体取决于每个方向上的电场。这种简单的表示方法不需要重复的过程,并且适合于对过电压施加的避雷器进行FDTD仿真。显示了施加过电压的避雷器内部和周围的瞬态电场,以及沿避雷器表面的垂直和径向电场的空间分布。还显示了屏蔽环的影响。

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