Pump System Analyst (PSA)
With the PSA extension, users are now able to quickly determine whether a pump station meets pump capacity requirements and to design the pump station improvement plan that best satisfies system needs and maintains optimal pumping efficiency. Both series and parallel pumps are fully supported in determining the best options for pump station upgrade. Multiple pump curves and system head curves can be displayed simultaneously on a single graph.
Let’s assume you want to evaluate whether an existing fire pump can support a required fire demand of 1,000 gpm (Refer to Fig-1). First, open PSA, select Pump 200 into PSA, run the PSA analysis, and the dialog box showing the results will be displayed. Then, in the PSA Results dialog box, add Fire Pump 210 into the Combination Pumps section; make sure the Individual radio button is checked, and click the Update button to update the graph on the right. The pump curves for both Pump 200 and Pump 210 are shown individually in the graph. From the operating points where the system head curves intersect the pump curve of Pump 200, one can see the system demand is roughly 400 gpm. In order to accommodate additional 1,000 gpm fire demand, it is expected that the operating points shift to the right (roughly 1,400 gpm) by turning on Fire Pump 210 (Pump 200 and Pump 210 are in parallel mode).
To determine the existing fire pump’s capacity, click the Parallel radio button, press the Update button, and evaluate the relationship between system head curves and the combined pump curve. From the graph, one can see the operating points shifting to a system demand of about 1,100 gpm. Therefore, the existing Fire Pump cannot meet the fire demand of 1,000 gpm.
To evaluate the alternatives for pump improvement plan, the user can change parallel count and settings within the Combination Pumps section. For example, in the Combination Pumps section, change Pump 210’s setting to 1.2, press the Update button, and take a look at the graph again. The graph shows that the operating points shift to a system demand of about 1,600 gpm. Therefore, the fire pump needs a larger fire pump equivalent to the existing fire pump with a speed ratio of 1.2.
Flow Animation allows viewing and thoroughly analyzing the network’s flow movement dynamic activity during an extended period simulation. The flow direction is animated through moving dots, while the flow magnitude is represented by moving dots’ symbol size. The speed, color, size of moving dots can be defined by a user through the Flow Animation tab within the Preferences dialog.
Integrating SCADA With InfoWater Network Models
Now, by exponentially accelerating the large model building process and automating scores of tedious tasks, InfoWater V11.5 enables power users to create, analyze and design better, more complete, and more accurate models in a fraction of the time required by competing software — enabling users to meet increasingly tighter project deadlines. And now, with direct integration to remote SCADA sites (PLCs), users can readily make use of detailed real-time performance information such as flow, pressure, tank level and pump and valve setting data to maintain continuously calibrated models and validate them for improved decision making and real-time response strategies. V11.5’s comprehensive data analysis and graphing (statistical and trending) tools let users convert huge quantities of real-time field data into actionable information they can use to manage, plan and improve.