The Hydroelectric Power Plants Application with Francis Turbine, "AEL-HPPF", has been designed by EDIBON with a double purpose: onone hand it allows studying the performance characteristics of a Francis turbine and, on the other hand, it allows studying the operationof real hydroelectric power plants.
This application consists of real mechanical and electrical elements (reduced scale sized) for testing inlaboratories.
The AEL-HPPF application consists of a water tank (water reservoir) from which the water is propelled via pipe through a high power waterpump (for simulating potential energy) up to an injector in which is installed a pressure sensor, with the great advantage of controllingthe water pressure via pump speed control (flow/pressure variations).
At the output of the water pump there is a flow sensor that allowsmeasuring the water flow injected into the turbine. In this way different pressures can be obtained to analyze several operation regimes ofthe Francis turbine, as well as power generation variations. Thus it is included a torque sensor, a braking system and a load cell to measurethe turbine torque. This allows obtaining the operation parameters as well as the characteristic curves of the turbine.
In addition, due to its versatility and flexibility, this application allows studying the operation of both large hydroelectric power plantsand mini hydroelectric centers. For this purpose, an electrical generator is coupled to the Francis turbine for electricity production andwith the goal of producing different energy consumptions.
A network analyzer is located at the output of the generator to monitor thepower generation parameters such as active, reactive and apparent power, phase currents, frequency and power factor. In addition thisapplication has a capacitor bank that provides reactive energy for power factor correction and a resistive load bank for the generatedenergy consumption.
Additionally, Edibon recommends to acquire the Computer Controlled Series/Parallel Pumps Bench, "PBSPC", to study Pumped StorageHydroelectric Systems. This unit allows the students to study the storage of potential energy through water pumping and the operativeadvantages of centrifugal pumps connected in series and parallel. In practice Hydroelectric Power Plants receive orders from the gridoperator for consuming the energy surplus at low demand periods (off-peak hours, mainly at nights) through water pumping towards higherreservoirs in order to generate energy again during high demand periods (or peak periods).
In this way, with the combination of "PBSPC" and "AEL-HPPF" it is possible to study the performance of Pumped Storage Power Systemscomparing the power generation by the Francis turbine and the consumed energy by the pumping storage system (PBSPC).