Water distribution systems (WDSs) deliver water from sources to consumers. These systems are made of hydraulic elements such as reservoirs, tanks, pipes, valves, and pumps. A pump is characterized by curves which define the relationship of the pump’s head gain and efficiency with its flow. For a new pump, the curves are provided by the manufacturer. However, due to its operating history, the performance of a pump deteriorates, and its curves decline at an estimated rate of about 1% per year. Pump curves are key elements for planning and management of WDSs and for monitoring system efficiency, to determine when a pump should be rehabilitated or replaced. In practice, determining pump curves is done by field tests, which are conducted every few years. This leaves the pump’s performance unmonitored for long time periods. Moreover, these tests often cover only a small range of the curves. This study demonstrates that in the era of IoT and big data, the data collected by Supervisory Control And Data Acquisition (SCADA) systems can be used to continuously monitor pumps’ performance and derive updated pump characteristic curves. We present and demonstrate a practical methodology to estimate fixed and variable speed pump curves in pumping stations. The proposed method can estimate individual pump curves even when the measurements are given only for the pumping station as a whole (i.e., total flow, pumping station head gain). The methodology is demonstrated in a real-world case study of a pumping station in southern Israel.

中文翻译：

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使用SCADA数据估算泵曲线的优化方法

水分配系统（WDS）将水从水源输送到消费者。这些系统由液压元件制成，例如储液罐，储罐，管道，阀门和泵。泵的特征在于曲线，这些曲线定义了泵扬程增益和效率与其流量之间的关系。对于新泵，曲线由制造商提供。但是，由于其运行历史，泵的性能会下降，其曲线以每年约1％的估计速度下降。泵曲线是规划和管理WDS以及监视系统效率，确定何时应该修复或更换泵的关键要素。实际上，确定泵曲线是通过每隔几年进行的现场测试来完成的。这使得泵的性能长时间无法监控。而且，这些测试通常只覆盖一小段曲线。这项研究表明，在物联网和大数据时代，监督控制和数据采集（SCADA）系统收集的数据可用于连续监控泵的性能并得出更新的泵特性曲线。我们提出并展示了一种实用的方法来估算泵站中的定速和变速泵曲线。即使仅对整个泵站进行测量（即总流量，泵站扬程增益），所提出的方法也可以估算单个泵的曲线。以色列南部一个泵站的实际案例研究证明了该方法。监督控制和数据采集（SCADA）系统收集的数据可用于连续监视泵的性能并得出更新的泵特性曲线。我们提出并展示了一种实用的方法来估算泵站中的定速和变速泵曲线。即使仅对整个泵站进行测量（即总流量，泵站扬程增益），所提出的方法也可以估算单个泵的曲线。以色列南部一个泵站的实际案例研究证明了该方法。监督控制和数据采集（SCADA）系统收集的数据可用于连续监视泵的性能并得出更新的泵特性曲线。我们提出并展示了一种实用的方法来估算泵站中的定速和变速泵曲线。即使仅对整个泵站进行测量（即总流量，泵站扬程增益），所提出的方法也可以估算单个泵的曲线。以色列南部一个泵站的实际案例研究证明了该方法。即使仅对整个泵站进行测量（即总流量，泵站扬程增益），所提出的方法也可以估算单个泵的曲线。以色列南部一个泵站的实际案例研究证明了该方法。即使仅对整个泵站进行测量（即总流量，泵站扬程增益），所提出的方法也可以估算单个泵的曲线。以色列南部一个泵站的实际案例研究证明了该方法。