电子测量与仪器学报

李茜,宾帆,周熙朋,张安安,杨超.油气管道动态直流与交流混合干扰分离检测方法[J].电子测量与仪器学报,2023,37(4):192-203

油气管道动态直流与交流混合干扰分离检测方法

Detection and separation method for dynamic DC and AC mixed interference on oil and gas pipelines

DOI：

英文关键词:oil and gas pipeline mixed interference detection FFT piecewise aggregation approximation

基金项目:智能电网四川省重点实验室开放基金项目(2021-IEPGKLSP-KFYB02)、西南石油大学自然科学“揭榜挂帅”项目(2021JBGS06)、西南石油大学科研“启航计划”项目(2021QHZ006)资助

作者	单位
李茜	1.西南石油大学电气信息学院
宾帆	1.西南石油大学电气信息学院
周熙朋	1.西南石油大学电气信息学院
张安安	1.西南石油大学电气信息学院
杨超	1.西南石油大学电气信息学院

Author	Institution
Li Qian	1.School of Electrical Engineer and Information, Southwest Petroleum University
Bin Fan	1.School of Electrical Engineer and Information, Southwest Petroleum University
Zhou Xipeng	1.School of Electrical Engineer and Information, Southwest Petroleum University
Zhang An’an	1.School of Electrical Engineer and Information, Southwest Petroleum University
Yang Chao	1.School of Electrical Engineer and Information, Southwest Petroleum University

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中文摘要:

随着电网和管网交叉建设,油气管道上动态直流干扰与交流干扰呈混叠化发展趋势,加剧了管道腐蚀速度。为分离检测油气管道上的动态直流和交流干扰,分别利用不同分辨率的 FFT 提取混合干扰信号中动态直流干扰和交流干扰的频谱特性。进而利用分段聚合近似和 FFT 相结合的方式,将动态直流干扰近似处理为直流信号,实现动态直流干扰与交流干扰的分离与特征参量计算。检测结果表明,动态直流干扰和交流干扰的检测进度符合预期要求,其中原始交流干扰电位有效值与分离后测得的交流干扰电位偏差不超过±2. 5‰,动态直流干扰电位有效值与分离测得的动态直流干扰电位有效值相差小于 1 mV (不超过±0. 5‰)。所做工作可以为干扰源排查和管道腐蚀针对性防护提供数据支撑。

英文摘要:

With the cross construction of power grid and pipe network, the dynamic DC interference and AC interference on oil and gas pipelines show a mixed development trend, which aggravates the pipeline corrosion rate. In order to separate and detect dynamic DC and AC interference on oil and gas pipelines, the spectrum characteristics of dynamic DC interference and AC interference in the mixed interference signal are extracted using FFT with different resolutions. Then, the dynamic DC interference is approximately treated as DC signal by using the combination of subsection aggregation approximation and FFT to realize the separation of dynamic DC interference and AC interference and the calculation of characteristic parameters. The test results show that the detection progress of dynamic DC interference and AC interference meets the expected requirements. The deviation between the original AC interference potential effective value and the AC interference potential measured after separation is not more than ± 2. 5‰, and the difference between the dynamic DC interference potential effective value and the dynamic DC interference potential effective value measured after separation is less than 1 mV (not more than ± 0. 5‰). The work provides data support for interference source troubleshooting and targeted pipeline corrosion protection

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