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The purpose of this technote is to discuss how to use Darwin Calibrator to perform Leakage Detection.
Note : Along with this technote you will find attached model used to explain Leakage Detection Using Darwin Calibrator & the input data files using Excel Format.
Observing leakage over the time with the help of graph using the attached model for a particular element:
For this example we have field data of flow through pipe P-13, which we will compare with the model results. (See attached model)
The graph shows the actual flow for Pipe P-13 at various time steps & the observed flow on the field. With the help of this graph you can visualize the leakage at the determined locations, by using the actual flow in the model Vs. observed flow on the field. The difference between the actual flow and the observed flow is the leaked flow into the system.
Calibrating the model to observe the leaks in the model
Go to Analysis>Darwin Calibrator>Create new Calibration Study>Rename it as Leakage Study.
Preparing data for importing the field data snapshots
There are several ways of importing the field data into Darwin Calibrator.
You need to have SCADA element present in the model for importing SCADA data.
2. Using other file formats as
Example of data format required using Microsoft Excel.
Importing field data through Modelbuilder into Darwin Calibrator
Click next once done with the mapping of Modelbuilder, go to Calibrator to check the imported field data. It should look like this.
Setting up calibrator study for leakage detection
Note: You can change the emitter coefficient values as per the amount of leakage.
Viewing the results using Element Symbology
Locate sources of non-revenue water usage with Darwin Calibrator in WaterGEMS
Model for leak det technote.zip