Leak detection in gas pipeline networks using an efficient state estimator. Part-I: Theory and simulations
Leak detection in gas pipeline networks using an efficient state estimator. Part-I: Theory and simulations
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DOI：
10.1016/j.compchemeng.2010.10.006
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发表时间：
2011-04
期刊：
影响因子：
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通讯作者：
H. Reddy;S. Narasimhan;S. M. Bhallamudi;S. Bairagi
中科院分区：
文献类型：
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作者：
H. Reddy;S. Narasimhan;S. M. Bhallamudi;S. Bairagi
动态仿真模型可以与流量和压力测量一起沿着用于天然气管网中的在线泄漏检测和识别。在这两部分的论文中，提出了一种方法来检测和定位发生在天然气管道泄漏。所提出的方法的主要特点是：（i）它是适用于单一的管道和管网，（ii）它认为非理想的气体混合物。为了实现所需的计算效率在线部署，一个有效的状态估计技术的基础上的传递函数模型，以前开发的作者，嵌入在一个假设检验框架。在本文的第一部分，详细描述了该方法，并使用两个说明性的管道系统的模拟评估其性能。所提出的方法显示出令人满意的执行，即使有噪声的测量和瞬态条件下，提供有足够的冗余的测量。
Dynamic simulation models can be used along with flow and pressure measurements, for on-line leak detection and identification in gas pipeline networks. In this two part paper, a methodology is proposed for detecting and localizing leaks occurring in gas pipelines. The main features of the proposed methodology are: (i) it is applicable to both single pipelines and pipeline networks and (ii) it considers non-ideal gas mixtures. In order to achieve the desired computational efficiency for on-line deployment, an efficient state estimation technique based on a transfer function model, previously developed by the authors, is embedded in a hypothesis testing framework. In Part-I of this paper, a detailed description of the methodology is presented, and its performance is evaluated using simulations on two illustrative pipeline systems. The proposed method is shown to perform satisfactorily even with noisy measurements and during transient conditions, provided there is sufficient redundancy in the measurements.