Discuss and solve problems in energy management and automation. Join conversations and share insights on products and solutions. Co-innovate and collaborate with a global network of peers.Register Now
What does PAM use for these values?
In RA, you can only configure a site to be either CDD, HDD or CDD+HDD - Selecting base temperature and % usage... But in PAM you can select one or both. So where does PAM get these values from?
Edit 20180530: Found out that changes to the weather setting does not automatically update the CDD/HDD values (historical particularly). Rather a ticket needs to be raised to get it updated.
Solved! Go to Solution.
I pinged the team: the HDD/CDD you see in PAM is calculated in RA based on the Telvent Average Temp for the day and the "base temp" that you set on a site by site basis in RA. So the HDD/CDD you see will not be the same as what's actually reported by Telvent (those use a standardized base temp).
In the past I've seen customers want to use a sort of "dead band" for calculating HDD/CDD: a lower threshold for the HDD and a higher threshold for the CDD. Do you have any requirements like that?
Thanks Mike. A dead bank would be useful in many cases. However, I don't have a particular need. Personally, I think our team would be more likely to use measurement based baselining, rather than CDD/HDD normalisation within PAM.