The skin effect electric heating system is a safe, reliable and effective electric heating solution for medium and long distance pipelines. It is mainly used for liquid medium and natural gas pipelines in large petrochemical enterprises. This electric heating technology has the advantages of high heating efficiency, safety and reliability, long service life, easy installation and maintenance, high degree of automation control and ability to be prefabricated in advance. Therefore, it has been gradually promoted and applied in the petrochemical industry and other fields in the past decade.