Optimal dispatch of demand side electricity resources

• US 8,041,467 B2
• Filed: 10/31/2008
• Issued: 10/18/2011
• Est. Priority Date: 10/31/2008
• Status: Active Grant

• Current Assignee: GE Digital Holdings LLC (GE Aerospace)
• Original Assignee: General Electric Company
• Inventors: Larson, Ronald Ray, Black, Jason Wayne, Tyagi, Rajesh
• Primary Examiner(s): Borissov; Igor
• Application Number:
  US12/290,623
• Publication Number:
  US 20100114799A1
• Time in Patent Office: 1,082 Days
• Field of Search: 713/300, 713/310, 713/320, 713/321, 713/322, 713/323, 713/324, 713/330, 713/340, 700/286, 700/287, 700/288, 700/289, 700/290, 700/291, 700/292, 700/295, 700/296, 700/297, 700/299, 700/300, 705/412, 705/37.R, 705/26, 705 7- 10, 705/28, 705/30, 705/29
• US Class Current: 700/291
• CPC Class Codes: G06Q 10/04 Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" market predictions or forecasting for commercial activities G06Q30/0202
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 50/06 Energy or water supply

Abstract

A method of load dispatch generates a load dispatch curve in response to both the opportunity cost of dispatching resources with a contractually limited number of dispatches in a given time period and estimated rebound effect data. The method identifies a best time period for dispatch based on the load dispatch curve and also supply curve data and generates a resultant load dispatch schedule. The resultant load dispatch schedule is transmitted to one or more smart home meters to dispatch loads in a manner that provides the greatest economic benefit.

Claims

1. A method of load dispatch, the method comprising:

generating supply curve data by a generation dispatch data processing system;

generating a load dispatch curve a load forecast data processing system in response to both the opportunity cost of dispatching resources with a contractually limited number of dispatches in a given time period and estimated rebound effect data, wherein the estimated rebound effect data is based upon at least one of thermal loads and deferrable loads and further wherein rebound effect is defined as the increase in demand consumption above that experienced by at least one of the thermal loads and deferrable loads during normal operating condition;

identifying by a dispatch data processing module executed by a processor, a time period for dispatch based on the load dispatch curve generated by the load forecast data processing system and supply curve data generated by the generation dispatch data processing system;

generating a load dispatch schedule by the dispatch data processing module executed by the processor based on the time period identified by the dispatch data processing module executed by the processor;

transmitting the load dispatch schedule to one or more smart home meters; and

dispatching loads by one or more smart home meters in response to the load dispatch schedule generated by the dispatch data processing module executed by the processor to provide the lesser of costs associated with load dispatch during the current period of interest when dispatching demand resources with the contractually limited number of dispatches as calculated by the dispatch data processing module executed by the processor versus expected costs associated with load dispatch during future periods when dispatching demand resources with the contractually limited number of dispatches as calculated by the dispatch data processing module executed by the processor.

2. The method according to claim 1, further comprising:

transmitting savings amount information to a display monitor for use by an operator to monitor the savings amount, wherein the savings amount is based on both of a reduction in supply generation costs corresponding to the load forecast and an increase in load dispatch costs corresponding to the load dispatch schedule.

3. The method according to claim 2, further comprising:

dispatching a load block only when the savings amount is greater than a savings threshold, wherein the savings threshold is based on the contractually limited number of dispatches.