This invention discloses a grounding device and arrangement method for
transmission line towers to reduce step
voltage, aiming to solve the technical problems of excessive step
voltage, cumbersome construction, and inability to adapt to the safety requirements of different personnel activity areas in existing
tower grounding devices. The device includes a horizontal
grounding grid,
grounding electrodes, grounding down conductors, and prefabricated mechanical connection components. The horizontal
grounding grid consists of concentric square closed loops centered on the
tower center and radial rays. Vertical grounding wires are welded to the apexes of the square closed loops. The
tower feet are connected to the
grounding electrodes via grounding down conductors and are connected to the horizontal
grounding grid through prefabricated mechanical connection components. This invention, by adjusting the number and spacing of the square closed loops, can limit the step
voltage to a safe threshold without laying a high-resistivity
ground layer. Using prefabricated connectors instead of
welding facilitates construction, adapts to different soil resistivities and personnel activity areas, provides reliable grounding, and is suitable for high-voltage
transmission line towers, ensuring personal and
equipment safety.