基于Birge-Massart阈值降噪的CIPS信号处理  

SIGNAL PROCESSING FOR PIPELINE CIPS BASED ON BIRGE-MASSART THRESHOLD DENOISING

作　　者：谷涛 王强[3] 申孝民[1] 刘振东 张皓 刘爽 Gu Tao;Wang Qiang;Shen Xiaomin;Liu Zhendong;Zhang Hao;Liu Shuang(Shandong Special Equipment Inspection and Research Institute Group Co.,Ltd.,Jinan,Shandong,250101;College of Metrology Measurement and Instrument of China Jiliang University,Hangzhou,Zhejiang,310018;College of Energy Environment and Safety Engineering of China Ji-liang University,Hangzhou,Zhejiang,310018)

机构地区：[1]山东省特种设备检验研究院集团有限公司,山东济南250101 [2]中国计量大学计量测试与仪器学院,浙江杭州310018 [3]中国计量大学能源环境与安全工程学院,浙江杭州310018

出　　处：《石油化工设备技术》2024年第5期36-40,I0003,共6页Petrochemical Equipment Technology

基　　金：山东省科学技术厅(批准号:2022SFGC0801)资助的课题;湖南省科学技术厅(批准号:2024JJ8283)资助的课题;科学技术部高新技术研究发展中心(批准号:2022YFB4004400)资助的课题。

摘　　要：密间隔电位法(CIPS)对石油天然气钢质输送管道的阴极保护电位分布及阴极保护情况有很好的检测效果,但是受CIPS探杖与土壤接触不良和杂散电流的影响,在干燥的沙土地区和杂散电流严重区域CIPS检测中的通断电电位会受到明显干扰,通过直接采集的数据信号很难判断真实保护电位。基于Birge-Massart策略的阈值小波降噪方法可以有效抑制探杖与土壤接触不良带来的噪声信号,同时更易判断出杂散电流影响区。The Close interval potential survey(CIPS)has a good detection effect on the cathodic protection potential distribution and cathodic protection situation of petroleum and natural gas steel transmission pipelines.However,due to the poor contact between the CIPS probe and the soil and the influence of stray currents,there is significant interference on the on/off potential in CIPS detection in dry sandy areas and areas with severe stray currents.It is difficult to determine the true protection potential through directly collected data signals.The threshold wavelet denoising method based on the Birge-Massart strategy can effectively suppress the noise signal caused by poor contact between the probe and the soil,while making it easier to identify the affected area of stray currents.

关 键 词：密间隔电位法 阴极保护 Birge-Massart阈值 信号处理 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]