Design and field tuning of an upstream controlled canal network SCADA

摘要

This paper presents the design, implementation and field tuning of a SCADA of an irrigation canal network upstream controlled with AMIL gates and equipped with other Neyrpic devices. Besides the hydraulic system, the paper also presents the supervisory and control system and its remote terminal units. The developed and field-tuned manual and automatic controllers are also presented. The manual controllers - direct and gate position controllers and gate flow controllers - are defined for the main canal intakes in order to permit achievement of predefined flow values or daily flow schedules, and are also defined for a few gate-controlled canal orifices used to discharge the overflow to the drainage system. The automatic controllers - water depth controllers for a few gate-controlled canal orifices - are defined in order to automatically prevent canal overtopping.The SCADA system also monitors the outflows at the main canals - the most important canal top side weirs, canal terminal weirs and automatic Neyrpic siphons. The flow equations used in the computing of flow in real time inside the developed controllers and the monitoring units were field tuned using collected data readings from a monostatic Doppler current meter. The tuning parameters are also defined and presented. Copyright pb 2008 John Wiley & Sons, Ltd.