交流干扰对埋地管线阴极保护的影响  

Influence of Alternating Current Interference on Cathodic Protection System of Buried Pipelines

作　　者：张玉星[1] 杜艳霞[1] 姜子涛[1] 

机构地区：[1]北京科技大学新材料技术研究院,北京100083

出　　处：《腐蚀与防护》2013年第4期350-354,358,共6页Corrosion & Protection

基　　金：国家自然科学基金(51101015);中央高校基本科研业务费专项资金(FRF-TP-12-145A)

摘　　要：随着基础建设的加速,高压交流输电线路和交流电气化铁路对埋地金属管道产生的交流干扰日益严重。国外大量案例表明,传统的阴极保护判据无法有效抑制交流腐蚀,而围绕交流干扰和阴极保护之间的相互影响及作用机理目前尚未达成共识。本文综述了目前该方面的研究现状,包括交流干扰下阴极保护有效电位的确定,综合考虑交流干扰和阴极保护相互作用的电流密度判别指标,以及相关交流干扰与阴极保护交互作用机理的讨论,为交流干扰下阴极保护参数的选取提供参考。With the acceleration of infrastructure, the AC interference of buried pipelines caused by HVAC power transmission line and AC electric railway becomes increasingly serious. The traditional cathodic protection criterion can nol effectively restrain the AC corrosion in many cases, the influence and mechanism of action hetween AC interference and cathodic protection have not yet reached an agreement. This paper summarizs the current researches, including the suitable cathodic protection potential under AC interference condition, the current density index through deliberate consideration about mechanism of action between AC interference and cathodic protection, which can offer reference to select parameters of cathodic protection under AC interference condition.

关 键 词：阴极保护 交流干扰 保护电位 交直流电流密度之比 作用机理 

分 类 号：TG172.84[金属学及工艺—金属表面处理]