#1 By: Richard Snape, March 25th, 2014 11:32
Continuing the discussion from Electricity base load:
I noticed a dip last Thursday beyond anything I've ever seen before. It happened at about 0500.
Does anyone know what it was? If we could work out what was turned off then, that would at least answer the question of what accounts for half of the base load. I wonder if @carlholland or @DMU_Energy have any info? Was there planned maintenance of any circuits that day?
#2 By: Graeme Stuart, March 25th, 2014 14:26
#3 By: Richard Snape, March 26th, 2014 08:13
Yes - interesting. It would be easy to dismiss it as a data blip, but it seems to be more than one data point. I hope someone can assign an event to it and then we can get some more info about what's in our baseload
#4 By: PWE, March 26th, 2014 09:23
Sorry Folks, after checking the background data it appears that this is a data issue.
#5 By: Graeme Stuart, March 26th, 2014 14:05
Yes, it seems to be related to the way smartspaces harvests data from Dynamat.
My current hypothesis is that occasionally I pull data from dynamat when it is conducting an import cycle from databird (the ultimate source of the data). This only works if we assume that dynamat leaves gaps in the data during the import process (i.e it doesn't import data in date order). As such, if smartspaces takes a snapshot when an import is running then I get data with with gaps.
If this is the case then it won't happen often but we should see it in all DMU buildings. Data are only imported twice a day for LCC buildings (compared to every three hours for DMU) so it is less likely to happen.
Both dips are I think the result of single missing readings.Normally when there is a missing reading the following reading is a spike roughly double the usual consumption, this is correctly spread across the two half hour periods. In this case it seems a single half hour of consumption is being divided into two across an hour.
More investigation is needed.
#6 By: Graeme Stuart, March 31st, 2014 13:51
I moved 4 posts to an existing topic: Electricity base load
#10 By: Graeme Stuart, March 31st, 2014 13:48
This topic is now closed. New replies are no longer allowed.
The topic was originally about a data glitch which has been identified and is under investigation.
There is an existing topic for discussing Queens electricity baseload.