Download App

Access REDAWN VOS App files on Zenodo >
 

App Guide

The REDAWN VOS app allows you to select the most productive machines for an assigned hydropower plant, among the PATs that are present in the REDAWN database. Once the plant data is provided, the produced energy is calculated by the application of the Variable Operating Strategy (VOS). You can find more information on several technical papers, such as – for example –“Fecarotta, O., Ramos, H.M., Derakshan, S., Del Giudice, G., Carravetta, A., Fine tuning of a PAT hydropower plant in a water supply network to improve the system effectiveness, Journal of Water Resources Planning and Management (ASCE), Vol. 144, Issue 8 (August 2018).”

As you launch the app, the following windows opens. In this window you can either enter the data of the hydropower plant or load a text file with preformatted data.

The required data are: the discharge values, the head values and the number of daily hours when those values are available (for constant conditions use [Q[m³/s] H[m] 24]).

You can enter the required data in the table or load the data from an external file, where the values are tab separated. An example file (“test.txt”) is available in the zip file of the app.

A certain amount of rows are available in the table. If you need more, please click on the button “add row to the table”.

Once the available points have been added to the table, the four plots on the right will be filled, with the head-discharge points and the frequency distribution of available discharge, head and hydraulic power.

As you click “Launch VOS” the app calculates the daily energy produced by each PAT that is present in the database, and shows it on a chart, together with the available hydraulic energy. Each bar represents the energy produced by each PAT.

With a right click on a bar, you get information about the machine name, the rotating speed and the produced daily energy. With an additional left click on one of them, a new window opens.

The new window shows the PAT curve, together with the available head-discharge points. As in some cases an extrapolation of the turbine curve can be needed, a warning could appear on the right side.

From this point you can export the machine information (“Export Machine data”) as they are present in the READWN database, or save the operating points of the hydropower plant (“Save VOS Data”) with important information about the plant operations.