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Enron Mail |
Good talking with you this morning. By all means, talk to Grant Masson abo=
ut=20 who else is using the Henwood model within Enron. Attached are the workbooks I mentioned. The "Details of Jan and July.xls"= =20 workbook contains the resulting listing from the query I gave you yesterday= =20 and you can see how the supply curve was created from that. The supply cur= ve=20 becomes nonsense at points for reasons I believe are related to reliability= =20 commitment constrants, instead of pure economic dispatch, and to the=20 aggregate reporting problem I described in my note yesterday. The workbook "Supply Curve.xls" has the simplistic, average supply curve I= =20 mentioned, constructed from fuel and VOM costs. Depending on the question= =20 you are trying to answer, it may be an approach to consider. The Henwood Contacts I had in mind are: Tao Guo, PhD, Senior "Algorithmist" (916-569-0985) =02=05 the one I was th= inking=20 of Wenxiong Huang, PhD Senior Project Consultant (916-569-0985) Ajit Kulkarni, PhD, Software Product Manager (916-569-0985) =02=05 more a t= rainer,=20 but sharp Cosimo Coscia, Senior Consultant (South Australia) 618-8357-1244 =02=05 ver= y=20 resourceful Wade Schauer, Staff Consultant, (916-569-0985) =02=05 best for questions ab= out=20 EMSS per se all have emails, of course. Template: tguo@hesinet.com Also, if you can not get satisfaction, contact Eric Toolson, VP=20 (916-569-0985). He has a laconic style, but is very focused on customer=20 satisfaction and retention. And he has the pull to make things happen. Regards, Michael <<< Karolina Potter/LON/ECT@ENRON 08/24/00 07:08AM <<< Michael, I am an analyst in Paul Mead's Continental Power Trading group in London. I= =20 am currently working on the project, which requires the use of EMSS, and=20 experience some difficulties interpreting the output results. Steven Leppar= d=20 from our research group gave me your name as an expert in this system and= =20 consequently the person to contact in case of problems. I have been running simulations for the Dutch market and was asked to provi= de=20 the traders with some front-end screen graphs in order to interpret the=20 numerical results. One of the graphs is to show an hourly generation stack= =20 and system's marginal cost, as we only run cost based scenarios. To sort ea= ch=20 station's hourly generation I need its marginal cost. To my knowledge thoug= h,=20 marginal cost is only generated for a systems marginal unit (TransArea=20 Marginal Units query, Marg_cost unit). Therefore I was sorting the stations= =20 according to the cost which I calculated based on the outputs from Station= =20 Detail by Hour query. The calculation was as follows: For each hour, for each generating station: "marginal cost" [o/MWh] =3D (Generation_Cost [o000] * 1000)/Generation [MWh= ] -=20 VOM_cost [o/MWh] This I thought would include fuel cost and start up costs. However, a=20 marginal station which I get on the stack as a result of the above=20 calculation is not a station given in Marginal Station field in TransArea= =20 Marginal Units query. I have also looked into TransArea_Data_Hr table and= =20 TransArea_Data table but non of the costs there match my results. Do you happen to know what formula is used to determine Marg_cost and which= =20 outputs I should be using to obtain the right results? It might be easier if we could discuss this issue on the phone. In this cas= e=20 could you please send me your direct telephone number. I am struggling=20 understanding what is going on and would appreciate your help very much. Regards Karolina=20 - TEXT.htm - Details of Jan and July.xls - Supply Curve.xls
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