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CN109085459B 一种接地网瞬变电磁响应计算方法 失效 - 权利终止

一种接地网瞬变电磁响应计算方法
Abstract:
本发明涉及一种接地网瞬变电磁响应计算方法。本发明首先推导圆形平面或方形平面与方形平面之间的互感计算公式，再利用组合平面与组合平面间互感计算原理计算接地网平面与圆形或方形线圈平面之间的互感。计算主要包括首先将接地网看作是平面网格，将接地网平面S2划分为多个小平面S′2_j(j＝1,2,3…m)，得到每个平面S′2_j的中心坐标与尺寸参数；将线圈平面S1划分为两个小平面S′1_i(1＝1,2)，得到每个平面S′1_i的中心坐标与尺寸参数；计算各平面S′2_j与各平面S′1_i之间的互感利用组合平面与组合平面间互感计算原理计算接地网平面S2与线圈平面S1的互感将计算得到的接地网与发射线圈之间的互感MTL和接地网与接收线圈之间的互感MRL带入感应电压计算公式计算接地网的感应电压VL。
Abstract(English):

The invention relates to a method for calculating a transient electromagnetic response of a grounding grid. The invention firstly derives the mutual inductance calculation formula between the circularplane or the square plane and the square plane, and then calculates the mutual inductance between the grounding grid plane and the circular or square coil plane by using the mutual inductance calculation principle between the combined plane and the combined plane. The calculation mainly comprises: firstly, regarding the grounding grid as a planar grid, dividing the grounding grid plane S2 into aplurality of facets S'2_j (j=1, 2, 3...m), and obtaining the central coordinates and size parameters of each plane S'2_j; calculate the mutual inductance(IMG) between each plane S'2_j and each plane S'1_i, and calculating the mutual inductance(IMG) between the grounding grid plane S2 and the coil plane S1 by using the mutual inductance calculation principle between the combined plane and the combined plane; and inducing the calculated mutual inductance MTL between the grounding grid and the transmitting coil and the mutual inductance MRL between the grounding grid and the receiving coil into the induced voltage calculation formula to calculate the induced voltage VL of the grounding grid.

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