用于保护海上平台的外加电流阴极保护系统还沒有得到普遍公认,主要是由于它有机械失效的实例。尽管如此,它还是具有許多使其引入注目的优点,特别是经改进的新型系统优点更加明显。本文考查了牺牲阳极和外加电流两种阴极保护方法的优缺点并叙述了一种能克服以前引起失效的许多缺点的特殊保护系统。 Impressed current cathodic protection systems used to protect offshore platforms have not been universally acknowledged, mainly due to the fact that they have mechanical failure. In spite of this, it still has many advantages that have drawn its attention, especially the advantages of the new and improved system. This article examines the advantages and disadvantages of the two cathodic protection methods, sacrificial anodes and applied current, and describes a special protection system that overcomes many of the shortcomings that have previously caused failures.