It could very well be the case when transmission losses are not considered and piecewise linear cost function is assumed for generators. LMPs will stay the same until there is a change in the marginal units and/or change in congested lines when load grows beyond certain level. The following two papers might help understand that. https://sites.google.com/site/eeruibo/files/DCOPF_LMP.pdf?attredirects=0 https://sites.google.com/site/eeruibo/files/congestion_and_LMP_prediction.pdf?attredirects=0
-Rui Rui (Ray) Bo Ph.D., SM-IEEE Senior Economic Studies Engineer Policy & Economic Studies MISO Phone: (651) 632-8447 Email: [email protected], [email protected] From: Haneen Mohammad dawoud Aburub Sent: Monday, September 16, 2013 12:24 To: [email protected] Subject: Question about locational marginal prices Hi, I used the DCOPF to get the locational marginal prices of a 3-bust system. The locational marginal prices that I have got are not changing with the change in load. Can you please tell me the reason of that. Thank you.
