Asle Frantzen

Getting data for load curve diagram

Discussion created by Asle Frantzen Champion on Jan 31, 2012
Latest reply on Feb 2, 2012 by Asle Frantzen

I'm creating a load curve diagram for the apparent power for a transformer, and I'm planning on using the .net chart component to display it.


Here's the sketch I got from our client:






The chart shows the curve for one year, the X axis displays hours and the Y axis shows the MVA. I'm planning on using the OLEDB Provider to collect data, but I'm not sure if I should let the PI Server do all the processing - or if I should do that myself in my application. The former is better, as the application is an ActiveX / .net control which will be displayed in a ProcessBook display.


The tags I'm going to show are stepped - that helps, but they have four decimals and new values are stored 2-4 times per hour.




Any advice on how to accomplish this query?