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    柔性阳极阴极保护系统失效原因排查和恢复方法

    Cause Investigation and Recovery Methods for Failed Flexible Anode Cathodic Protection System

    • 摘要: 某燃气公司管道阴极保护采用外加电流方式且以柔性阳极作为辅助阳极地床。该阴极保护系统出现了输出电压电流和保护电位波动剧烈,输出电流小、输出电压大,以及输出电流和输出电压小等失效问题。针对以上问题的调查发现,地铁杂散电流干扰、柔性阳极断缆等原因造成管道阴极保护系统失效。研究表明,通过改变阳极地床分布形式、增加阴极保护系统和在通电点位置增加抗干扰探头等方式可以使阴极保护系统恢复正常运行,管道达到有效的阴极保护状态。

       

      Abstract: The cathodic protection system of a certain gas company's pipeline adopted an impressed current cathodic protection method with the flexible anode as the auxiliary anode bed. The cathodic protection system had some problems such as severe fluctuations in output voltage and protection potential, low output current and high output voltage, as well as low output current and output voltage. In response to the above issues, the investigation revealed that the cathodic protection system failed due to factors such as subway stray current interference and flexible anode cable breakage in the pipeline. The results show that changing the distribution of the anode bed, adding cathodic protection systems, and adding anti-interference probes at the power point could effectively restore the normal operation of the cathodic protection system, enabling pipelines to achieve effective cathodic protection status.

       

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