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首页> 外文期刊>Journal of Hydroinformatics >Hydraulic transient wave separation algorithm using a dual-sensor with applications to pipeline condition assessment
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Hydraulic transient wave separation algorithm using a dual-sensor with applications to pipeline condition assessment

机译：双传感器液压瞬态波分离算法及其在管道状态评估中的应用

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Over the past two decades, techniques have been developed for pipeline leak detection and condition assessment using hydraulic transient waves (i.e. water hammer waves). A common measurement strategy for applications involves analysis of signals from a single pressure sensor located at each measurement site. The measured pressure trace from a single sensor is a superposition of reflections coming from upstream, and downstream, of the sensor. This superposition brings complexities for signal processing applications for fault detection analysis. This paper presents a wave separation algorithm, accounting for transmission dynamics, which enables the extraction of directional travelling waves by using two closely placed pressure sensors at one measurement site (referred to as a dual-sensor). Two typical transient incident pressure waves, a pulse wave and a step wave, are investigated in numerical simulations and laboratory experiments. Comparison of the wave separation results with their predicted counterparts shows the wave separation algorithm is successful. The results also show that the proposed wave separation technique facilitates transient-based pipeline condition assessment.
机译：在过去的二十年中，已经开发了使用液压瞬变波（即水锤波）进行管道泄漏检测和状态评估的技术。适用于应用程序的常见测量策略涉及分析来自位于每个测量位置的单个压力传感器的信号。从单个传感器测得的压力曲线是来自传感器上游和下游反射的叠加。这种叠加为信号处理应用程序的故障检测分析带来了复杂性。本文提出了一种考虑传输动力学的波分离算法，该算法可以通过在一个测量位置使用两个紧密放置的压力传感器（称为双传感器）来提取定向行波。在数值模拟和实验室实验中研究了两种典型的瞬态入射压力波，即脉冲波和阶跃波。将波分离结果与预测的对应结果进行比较表明，波分离算法是成功的。结果还表明，所提出的波分离技术有助于基于瞬态的管道状况评估。

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