接地网镁阳极的使用教程Tutorial for the use of the grounding grid magnesium anode

Principle of cathodic protection of grounding network
Soil is a complex system composed of gas, liquid, and solid three-phase materials, and its three-phase comPOSTTTION changes with changes in temperature, climate, and seasons. This results in changes in soil resistivity, Redox potential, pH, water content, and air permeability; At the same time, the soil is accompanied by a series of microbial metabolic activities, which are the factors that cause the corrosion of the grounding network. Therefore, assessing the corrosiveness of the soil is very complicated.
The cathode polarization of protected metal facilities(such as the ground network of a substation) by sacrificing the anode through the current generated by its own corrosion, turns it into a large cathode, thereby preventing metal corrosion, which is called cathode protection. The sacrificial anode method is simple and does not require maintenance. It is a metal or alloy(such as magnesium and magnesium alloy anodes) with a more negative and more corrosive connection potential on the protected grounding network. Corrosive dissolution by the anode produces current to achieve the purpose of protecting the cathode(ground network). Sacrificing anode cathodic protection is the most commonly used protection method in grounding network cathodic protection.

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