The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 2008
Filed:
Oct. 25, 2005
Howard Rosenof, Newton, MA (US);
W. Curt Lefebvre, Boston, MA (US);
Daniel W. Kohn, Cambridge, MA (US);
Peter Spinney, Jamaica Plain, MA (US);
Howard Rosenof, Newton, MA (US);
W. Curt Lefebvre, Boston, MA (US);
Daniel W. Kohn, Cambridge, MA (US);
Peter Spinney, Jamaica Plain, MA (US);
NeuCo, Inc., Boston, MA (US);
Abstract
A method and system are provided for calculating a marginal cost curve for a plant at a plant load range comprising a plurality of specified plant loads. The method includes providing a model used for controlling the plant. The model relates plant load and one or more given cost contributing factors. The marginal value for each of the one or more given cost contributing factors at each of the plurality of specified plant loads is determined using the model. A variable cost at each of the plurality of specified plant loads is determined by: (i) multiplying the marginal value of each of the one or more given cost contributing factors at each of the plurality of specified plant loads by a respective unit cost of each of the one or more given cost contributing factors, and (ii) if there are a plurality of given cost contributing factors, summing the results of (i) at each of the plurality of specified plant loads. A marginal variable cost is determined at each of the plurality of specified plant loads by computing a derivative of the variable cost at each of the plurality of specified plant loads. A collection of marginal variable costs at the plurality of specified plant loads defines the marginal cost curve for the plant at the plant load range.