I didn't want to clarify. I wanted to ask you what is the reason? How you have determined the number of hours and why for the first one is negative and for the second one is positive. I don't understand. If it is possible, please explain.
Best Wishes Roberto On Mon, Mar 26, 2012 at 14:59, Ray Zimmerman <[email protected]> wrote: > On Mar 24, 2012, at 10:56 PM, Roberto Carvalini wrote: > > 1. When I do a runmarket, in the results, what is the difference between > PRICE in MARKET SUMMARY and LAMBDA in System summary? Usually they have the > same value and sometimes they are different? What is the reason? > > > PRICE depends on the auction type chosen. For a first price auction, they > should be the same except in cases where a generator is dispatched at PMIN, > in which case the LAMBDA may go lower than the offer price, but the cleared > price is still set to the offer price. See MATPOWER Tech Note 1 on Uniform > Price Auctions and Optimal Power > Flow<http://www.pserc.cornell.edu/matpower/TN1-OPF-Auctions.pdf> for > more details. > > > 2. According to your reply to one of the posts as follows, what is the > difference between these two costs? They get different values? > > cost = totcost(r.gencost, r.gen(:, PG)); > cost = dispatch(:, FCOST) + dispatch(:, VCOST); > > > The first is a cost in $/hr. The second is multiplied by the number of > hours in a market period (mkt.t) and so is expressed in $. For the default > of 1 hour periods, they should give the same number. > > > -- > Ray Zimmerman > Senior Research Associate > 419A Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > >
