Energy storage station ground foundation anti-corrosion

Why is corrosion a problem in grounding grids?

Corrosion is the primary problem that threatens the safe operation of grounding grids in soil environments. The corrosion of the grounding grid in soil is mainly electrochemical corrosion.

What is the corrosion rate of grounding materials?

When the moisture content reaches 20% to 45%, the corrosion rate is the highest [50, 68, 69]. The corrosion rate of grounding materials in soils with extremely high and low moisture content is relatively small. The corrosion process of the grounding material in the soil is regarded as a corrosion battery.

How to prevent corrosion of phase change materials?

According to the above experimental research, there are three main methods for corrosion prevention of phase change materials: corrosion inhibitor, packaging, and coating.

Why do new and old grounding materials form a galvanic corrosion cell?

Due to the different natural corrosion potentials of the new and old materials, the two will form a galvanic corrosion cell when they are connected to each other. The galvanic corrosion cell formed by the contact of new and old grounding materials is shown in Figure 4.

How to protect a grounding conductor from corrosion?

Since the grounding conductor material requires good electrical conductivity while reducing the corrosion rate, it is imperative to consider both corrosion resistance and electrical conductivity when choosing corrosion protection measures. 3.2.1. Increase the Cross-Sectional Area of the Grounding Conductor

Why do grounding materials buried in moist soil have low corrosion potential?

The grounding material buried in the compact and moist soil has low corrosion potential due to lack of oxygen, and it acts as an anode to accelerate corrosion. The grounding materials buried in loose, dry soils have high corrosion potentials due to oxygen enrichment and serve as cathodes to slow down corrosion.