03-28-2019 06:33 AM
Hello,
I have a file containing the current and corresponding voltage waveforms of several appliances (TDMS). I need to compute in DIADem the relative active and reactive powers using the simple formulas : P=U*I*cos(phi) ; Q=U*I*sin(phi)
Can you help?
03-28-2019 12:10 PM
Yes, in DIAdem you can multiply whole channels together and perform math functions like sine and cosine on them. Here is an example code that can get you started:
Call Calculate("ch(""Results/P"") = ch(""Raw Data/U"") * ch(""Raw Data/I"") * cos(Pi)") Call Calculate("ch(""Results/Q"") = ch(""Raw Data/U"") * ch(""Raw Data/I"") * sin(Pi)")
Also, you can use the channel calculator to do those calculations manually (or to record them into script):
03-29-2019 08:37 AM
Thank you! that works!
😄