Integrated Layout Of Surge Arrester And Grounding Grid In Charging Pile System

For charging piles that carry high-voltage equipment, the proper organization of the 22 kv lightning arrester layout and the connectivity of the grounding network are not only related to the long-term stability of the equipment, but also to the electromagnetic compatibility and safety of the entire power supply system.

From the perspective of lightning protection engineering practice, 220 kv lightning arrester guides overvoltage energy into the ground through a low-impedance path. This practice of deploying it around buildings and equipment is also widely adopted in large-scale power distribution or communication facilities. At the charging station site, if the 33 kv lighting arrester grounding node is connected to the grounding grid of the charging station, a whole grounding system can be formed to achieve the consistency of potential between different devices.

The grounding network in power facilities plays a role in current discharge and equipotential bonding. Its layout should be spatially designed based on factors such as soil resistivity and facility density. Grounding wires should minimize loops and bends, avoiding isolated, suspended grounding components to reduce local potential differences. After the 33 kv lightning arrester is connected to the grounding conductor of the charging pile structure in the common network, it forms a multi-point grounding loop. This arrangement is especially important in areas with frequent thunderstorms.