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Since it has a great height, large volume and complicated configuration, the 1000-kV ultra-high voltage surge arrester has a very nonuniform potential distribution, which leads to the depressed service life and low safe reliability. This paper proposed the three-dimensional FEM and circuit analytic method to analyze and improve the potential distribution of the 1000-kV surge arrester. An optimal grading...
Based on the idea of field-circuit combination, the 3D FEM and circuit analytic method are applied to analyze and improve the potential distribution of the 1000-kV metal oxide arrester (MOA). The 3D FEM is used to obtain the 1000-kV MOA's potential distribution and stray capacitance parameters to build the equivalent circuit of the MOA. Based on the equivalent circuit, the method to improve the potential...
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