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Control the cost, touch and step voltages of the grounding grids design

机译：控制接地网设计的成本，接触电压和阶跃电压

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摘要

In this study, an evolutionary strategy is presented to get the optimal grounding grid design to minimise the design cost, the touch and step voltages of the grounding grid to ensure the economical constraint as well as the safety conditions. The proposed technique is used for one and two-layer soil. This technique is based on the comparison between the quality factors of the initial grid dimension according to the cost, touch and step voltages with the other quality factors obtained from new generations (offspring) of the grid dimensions. Effects of top layer thickness, number of grid meshes, vertical rods number and length, and the soil resistivity of the top and bottom layers on grounding resistance (Rg) and earth surface potential are studied. Different case studies are introduced to evaluate the performance of the proposed technique and to provide the knowledge about the grid dimensions that is substantial for the economical design of the grounding grids.
机译：在这项研究中，提出了一种进化策略，以获得最佳的接地网设计，以最大程度地降低设计成本，接地网的接触电压和阶跃电压，以确保经济上的约束以及安全条件。所提出的技术用于一层和两层土壤。该技术基于根据成本，接触电压和阶跃电压在初始网格尺寸的品质因数与从新一代（后代）网格尺寸获得的其他品质因数之间进行比较。研究了顶层厚度，网格数，垂直杆数和长度以及顶层和底层的土壤电阻率对接地电阻（Rg）和地表电势的影响。引入了不同的案例研究，以评估所提出技术的性能并提供有关接地网尺寸的知识，这对于接地网的经济设计至关重要。

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