Status in Research on Effect of Grounding System on Regional Cathodic Protection and Solution

Grounding and regional cathodic protection technology protect gas stations in term of electrical safety and anti-corrosion respectively. The common bonding of grounding grids to underground pipelines and storage tanks creates a big effect on the regional cathodic protection system due to the differences of materials and surface conditions between grounding system and buried pipelines or storage tanks, which can impact the protective effect and design difficulty. This paper summarizes domestic and overseas researches about the effect of grounding on regional cathodic protection system and introduces the related protective measures. The key problems are indicated and the development trend in this field is predicted.