HydroPlant® - Library of Hydro Power Plant Components
The HydroPlant library is designed to be an effective tool for commissioning, testing of new control strategies and development and verification of new plant designs. The library is developed using Modelica modeling language leaving the model implementation and level of detail open for the user to see.
The library contains all main components which allow testing of a complete hydro power plant.
The structure of the flow components enables the study of phenomenas such as water inertia and water hammers making detailed study of the dynamics involved at plant start up and load rejection possible. Reservoir wave propagation due to external transients or transients in the plant makes it possible to study the water level of the reservoir in detail, useful when tuning the water level control system. The detailed reservoir model also makes it possible to study the dynamics involved when having plants in cascade.
Model of the actuators can work under multiple speed limits to allow simulation of multi-step opening and closing of the guide vanes and runner angles. Adding play and hysteresis allows analysis of the influence of obsolete equipment. The model of the Kaplan servo motors also includes a Kaplan Cam curve adjusted for the actual head of the water.
Turbine models include both simplified models where the turbine is treated as an orifice tube with one flow through it. The detailed model includes the three essential volumes of the turbine; scroll case, guide vane and runner volume and the draft tube. Flows are calculated separately for guide vanes, for runner and for leakage through runner circumference from guide vane and runner volume to draft tube. This approach offers more detail and is essential when studying turbine start-up, shut-down or load rejection. Parameters needed to parameterize both these models are availible from all turbine manufactures.
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