石油学报 ›› 2005, Vol. 26 ›› Issue (4): 123-126.DOI: 10.7623/syxb200504027

• 石油工程 • 上一篇    

基于序贯检验的管道泄漏检测方法

崔谦1,2, 靳世久1, 王立坤1, 魏茂安1,2, 周琰1   

  1. 1. 天津大学精密测试技术及仪器国家重点实验室 天津 300072;
    2. 胜利油田钻井工艺研究院 山东东营 257000
  • 收稿日期:2004-09-22 修回日期:2005-01-20 出版日期:2005-07-25 发布日期:2010-05-21
  • 作者简介:崔谦,男,1975年6月生,2001年毕业于山东大学控制理论与控制工程专业,获工学硕士;现为天津大学精密仪器与光电子工程学院在读博士,主要从事数字信号处理,工业自动化控制,精密测试技术及仪器研究工作.E-mail:hamcui@163.com
  • 基金资助:
    国家自然科学基金“热油长输管道泄漏检测与定位技术研究”(NO.69574020)资助.

Detection method for pipeline leakage based on sequential probability ratio test

CUI Qian1,2, JIN Shi-jiu1, WANG Li-kun1, WEI Mao-an1,2, ZHOU Yan1   

  1. 1. State Key Laboratory for Precision Measuring Technology and Instrument, Tianjin University, Tianjin 300072, China;
    2. Drilling Research Institute of Shengli Oilfield, Dongying 257000, China
  • Received:2004-09-22 Revised:2005-01-20 Online:2005-07-25 Published:2010-05-21

摘要: 利用序贯概率比检验法检测油气管道泄漏是一种较新的方法.针对原始压力信号噪声的非高斯性,采用卡尔曼滤波器进行预处理,提高了序贯法判断泄漏的准确性.分析了传统压力梯度法的不足,借鉴负压波定位中的时间差法定位泄漏点,提高了定位的精度.实验结果表明,这种管道泄漏检测方法值得推广.

关键词: 管道, 泄漏检测方法, 序贯概率比检验法, 卡尔曼滤波器, 压力梯度法

Abstract: The sequential probability ratio test (SPRT) can be applied only to the case that there is only white Guass noise in the pressure signal.Kalman filter was used to pretreatment of pressure signal to obtain the real data similar to Guass distribution.Then SPRT was used to determine leakage of pipeline.For improving the detecting accuracy of leakage positions on pipeline with SPRT,a new method based on time diversity was proposed.The deficiencies of existing pressure gradient localization method were analyzed.The experimental results proved the superiority of the proposed method.

Key words: pipeline, leakage detection, sequential probability ratio test, Kalman filter, pressure gradient method

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