扩展卡尔曼滤波器在管线泄漏检测中的应用  

Leak Detection for Pipelines by Using the Extended Kalman Filter

作　　者：田士章[1] 王永志[1] 李晋[1] 李成刚 

机构地区：[1]辽宁石油化工大学储运与建筑学院,辽宁抚顺113001 [2]中国石油东北销售公司调运处,辽宁沈阳110013

出　　处：《当代化工》2007年第5期527-529,共3页Contemporary Chemical Industry

摘　　要：通过设计的一套模拟软件,对管道在泄漏发生后全线的流量和压头变化情况进行仿真。然后对水击特征方程建立状态空间离散模型,根据采集的管道压头和流量值,用扩展卡尔曼滤波算法逐步估计出泄漏量,再运用适当的判别准则定出泄漏点的位置。并给出基于该方法的数值算例,数值仿真得出的泄漏量和泄漏位置分别具有0.14%和0.17%的相对误差。表明该方法是一种有效的泄漏检测与定位方法.适合于管道的现行操作。The software designed simulated the flow and pressure of the whole pipeline after leaking. Then the discrete state space model of the fluid transients character function was established . Extened Kalman Filter was used to estimate the leak flow step by step based on the gathered values of pressure and flow, at last located the leak point by an appropriate rule. At the end of the paper, an example based on the method was provided, the relative error of flow and location is 0.14 % and 0.17 %. The result shows＇ that the method of leak detection and location is effective.

关 键 词：扩展卡尔曼滤波器 泄漏检测 定位 

分 类 号：TQ015[化学工程]