摘要
传统阴极保护系统参数设计存在一定的经验性和随机性,在阳极选址、恒电仪选型和阴极保护控制上具有局限性。针对上述问题,在测试电化学阻抗谱的基础上,确定管道的最佳保护电位,利用COMSOL软件中的二次电流分布模型确定阴极保护电位分布的影响因素,通过均匀性和保护效果定义了电位分布的目标函数,并利用麻雀算法(SSA)实现目标函数的迭代求解。结果表明,最佳阴极保护电位较保护电位区间更具参考性,可参照该值提高阴极保护效果;阳极数量越多、外加电流越小,保护电位的均匀性越强;阳极与管道径向的距离越大,电位正移越严重,电位越均匀。针对实例对不同改造方案进行优化,优化后可减缓或避免管道发生腐蚀,证明了算法的有效性和科学性。
The traditional cathodic protection system parameter design has certain experience and randomness,which has limitations in anode location,electropotentiometer selection,and cathodic protection control.To solve the above problems,the optimal protection potential of the pipeline is determined on the basis of testing the electrochemical impedance spectrum,and the influencing factors of the cathodic protection potential distribution are determined by using the secondary current distribution model in COMSOL software.The objective function of the potential distribution is determined by the uniformity and protection effect,and the iterative solution of the objective function is realized by using the Sparrow Search Algorithm(SSA).The results show that the optimal cathodic protection potential has more reference value than the protection potential interval,which can be used to improve the effect of cathodic protection.As the number of anodes increases and the applied current decreases,a stronger uniformity of the protection potential is observed.With increasing the radial distance between the anode and pipe,the positive potential shift becomes more serious,and the potential becomes more uniform.Different modification schemes are optimized according to the example,which can slow down or avoid pipeline corrosion,and proves the effectiveness and scientific nature of the algorithm.
作者
张善泽
ZHANG Shanze(No.3 Oil Production Plant of Daqing Oilfield Co.,Ltd)
出处
《油气田地面工程》
2024年第4期7-11,32,共6页
Oil-Gas Field Surface Engineering
关键词
SSA
阴极保护
阳极数量
阳极位置
外加电流
SSA
cathodic protection
anode number
anode location
applied current
作者简介
张善泽,工程师,2012年毕业于东北石油大学资源勘查工程专业,从事地面技术管理工作,18645292438,366689568@qq.com,黑龙江省大庆市大庆油田有限责任公司第三采油厂工艺研究所,163000。
