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dpinney / omf

The Open Modeling Framework for smart grid cost-benefit analysis.
https://omf.coop
GNU General Public License v2.0
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Find citations for good ZIP estimates. #211

Closed dpinney closed 10 years ago

dpinney commented 10 years ago

Our current defaults are 50Z/50P, it sounds like 70Z/30P is a better default. We need to choose a good set of defaults and document our reasoning.

srivats0603 commented 10 years ago

Update: Exchanged emails with David Chassin from PNNL, he pointed us to Yu Zhang from PNNL, exchanged email with him. Yu will get back to us in a couple of days.

srivats0603 commented 10 years ago

From the data sent by PNNL, modern day loads might not have a constant power component at all (sounds like a very very strong statement). This was confirmed by PNNL. See the attached conversation. The conclusion: (a) There is a very high constant impedance portion and small constant current component for all parts of WECC for all seasons (b) Most of the rural utilities might not have this load composition (yet), so I would assume that the Z = 0.7 and P = 0.3 mixture mentioned for residential areas (as mentioned in the windmil documents) is a sane assumption.

pnnl conversation