Power station grounding grid

The invention discloses a power station grounding grid and belongs to the electric field. The power station grounding grid includes a grid-side grounding grid and a power station-side grounding grid; the grid-side grounding grid is electrically connected with the grounding point of the neutral point of a step-up main transformer; the grid-side grounding grid is electrically connected with the grounding point of first equipment; the first equipment includes equipment directly connected with a power grid; the power station-side grounding grid is electrically connected with the grounding point of second equipment; the second equipment includes equipment of which the working power source is supplied by a power station; and no electrical connection exists between the grid-side grounding grid and the power station-side grounding grid. With the power station grounding grid adopted, harm to the step-up main transformer of the power station caused by ground current can be reduced, and the security of the power grid and the power station can be improved.