Dear Dr. Zimmerman, Would you help me in identifying the variable from MATPOWER’s OPF that corresponds to LMP at reference bus. To calculate loss component of LMP , I need Delivery Factor and LMP of reference bus.
Appreciate your help. Thanks, Nandu Balachandran The University of New Orleans From: bounce-119414723-73506...@list.cornell.edu [mailto:bounce-119414723-73506...@list.cornell.edu] On Behalf Of Ray Zimmerman Sent: Monday, June 29, 2015 11:36 AM To: MATPOWER discussion forum <matpowe...@list.cornell.edu> Subject: Re: LMP calculation using MATPOWER The best way to split the LMP into components is outside the scope of this list, but you may want to start with a reference like … Luonan Chen; Suzuki, H.; Wachi, T.; Shimura, Y., "Components of nodal prices for electric power systems," Power Systems, IEEE Transactions on , vol.17, no.1, pp.41,49, Feb 2002 doi: 10.1109/59.982191 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=982191&isnumber=21157 See Table 6-1 in the User’s Manual<http://www.pserc.cornell.edu/matpower/docs/MATPOWER-manual-5.1.pdf> for a summary of where to find the shadow prices of the various constraints in MATPOWER’s OPF results. Ray On Jun 29, 2015, at 12:20 PM, Nandu Balachandran <nbala...@my.uno.edu<mailto:nbala...@my.uno.edu>> wrote: Dear Dr.Zimmerman, What is the best way to spit LMP into three components? In order to split LMP into energy , congestion, and loss , we need Lagrangian multiplier of energy mismatch at reference bus and Lagrangian multiplier of transmission constraint. Does MATPOWER gives these values along with opf solution. If not how do we calculate these components? Appreciate your help. Thanks, Nandu Balachandran The University of New Orleans From: bounce-119409080-73506...@list.cornell.edu<mailto:bounce-119409080-73506...@list.cornell.edu> [mailto:bounce-119409080-73506...@list.cornell.edu] On Behalf Of Ray Zimmerman Sent: Friday, June 26, 2015 2:15 PM To: MATPOWER discussion forum Subject: Re: LMP calculation using MATPOWER LAM_P is the overall LMP. If you want to break it into components, you would have to do that yourself. Ray On Jun 25, 2015, at 3:19 PM, Nandu Balachandran <nbala...@my.uno.edu<mailto:nbala...@my.uno.edu>> wrote: Dear Dr. Zimmerman, Thanks a lot for your help. I have few more questions. We could split LMP into three components . ( LMP of energy+ Congestion + Loss). So is LAM_P is Lagrangian multiplier of just energy component of LMP ? If so, does MATPOWER provides any function to calculate overall LMP considering energy, congestion, and loss. Thanks and appreciate your help, Nandu From: bounce-119388860-73506...@list.cornell.edu<mailto:bounce-119388860-73506...@list.cornell.edu> [mailto:bounce-119388860-73506...@list.cornell.edu] On Behalf Of Ray Zimmerman Sent: Thursday, June 18, 2015 3:32 PM To: MATPOWER discussion forum Subject: Re: LMP calculation using MATPOWER See Table 6-1 in the User’s Manual<http://www.pserc.cornell.edu/matpower/docs/MATPOWER-manual-5.1.pdf> for results of the OPF, including LAM_P which is the LMP and see Section 4.4 for a description of MATPOWER’s functions for computing shift factors. Ray On Jun 16, 2015, at 4:14 AM, lavanya arubolu <arubolulava...@gmail.com<mailto:arubolulava...@gmail.com>> wrote: Dear Nandu Balachandran, There is inbuilt function in MATPOWER to know the LMPs at all the buses. If you want to calculate LMPs for a particular system run OPF and see the results, in OPF results one function called Lamada this indicates LMPs at all the buses. I think direct calculation of GSF is not possible using MATPOWER we have to write code for this. I hope this will clarify your doubt. Thank you On Tue, Jun 16, 2015 at 11:14 AM, Nandu Balachandran <nbala...@my.uno.edu<mailto:nbala...@my.uno.edu>> wrote: Dear Dr. Zimmerman, Does MATPOWER has some inbuilt function for calculating LMP at each node? Is there a way to calculate Generator Shift Factor after calculating OPF solution using "runopf ( )" ? Thanks and appreciate your help - Thanks, Nandu Balachandran The University of New Orleans nbala...@uno.edu<mailto:nbala...@uno.edu> Ph No: +1 (504) 505-1087
