Optimized transmission and load security constrained unit commitment dispatch using linear programming for electricity markets
First Claim
Patent Images
1. A computer implemented system for optimal energy and energy reserve dispatching in an electricity market of market participants, said system comprising:
- a database; and
a processor configured;
inputting constraints of the market participants;
receiving energy and energy reserve bids from the market participants;
defining piecewise linear bid cost curves having respective breakpoints corresponding to the energy and energy reserve bids;
converting the piecewise linear bid cost curves to one or more cost variables associated with a set of linear equations according to the following relationship;
ccom(i,t)=Σ
kccompl(i,t,k)·
ω
compl(i,t,k),wherein ccom(i,t) is a cost variable for an energy commodity bid i at time step t;
k is a breakpoint of a piecewise linear bid cost curve;
ccompl(i,t,k) is a piecewise linear bid cost curve breakpoint for energy commodity bid i at time step t at breakpoint k;
ω
compl (i,t,k) is a weighting variable associated with the piecewise linear bid cost curve commodity bid i at time step t at breakpoint k;
calculating an optimal dispatch of energy and energy reserve responsive to the cost variable considering said constraints of the market participants using mixed integer linear programming techniques;
pricing the optimal dispatch of energy and energy reserve considering said constraints; and
providing the pricing to the market participants.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention is a method for optimizing security constrained unit commitment in the day ahead wholesale electricity market using mixed integer linear programming techniques. The wholesale electricity market uniquely requires the submission of offers to supply energy and ancillary services at stated prices, as well as bids to purchase energy, and known operating and security constraints. The present invention address the above noted needs by providing a SCUC engine to support and implement the requirements via a computer system implementation.
-
Citations
18 Claims
-
1. A computer implemented system for optimal energy and energy reserve dispatching in an electricity market of market participants, said system comprising:
- a database; and
a processor configured; inputting constraints of the market participants; receiving energy and energy reserve bids from the market participants; defining piecewise linear bid cost curves having respective breakpoints corresponding to the energy and energy reserve bids; converting the piecewise linear bid cost curves to one or more cost variables associated with a set of linear equations according to the following relationship;
ccom(i,t)=Σ
kccompl(i,t,k)·
ω
compl(i,t,k),wherein ccom(i,t) is a cost variable for an energy commodity bid i at time step t;
k is a breakpoint of a piecewise linear bid cost curve;
ccompl(i,t,k) is a piecewise linear bid cost curve breakpoint for energy commodity bid i at time step t at breakpoint k;
ω
compl (i,t,k) is a weighting variable associated with the piecewise linear bid cost curve commodity bid i at time step t at breakpoint k;calculating an optimal dispatch of energy and energy reserve responsive to the cost variable considering said constraints of the market participants using mixed integer linear programming techniques; pricing the optimal dispatch of energy and energy reserve considering said constraints; and providing the pricing to the market participants. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- a database; and
-
17. A method for optimal energy and energy reserve dispatching in an electricity market of market participants, said method comprising:
-
inputting constraints of the market participants; receiving energy and energy reserve bids from the market participants; defining piecewise linear bid cost curves having respective breakpoints corresponding to the energy and energy reserve bids; converting the piecewise linear bid cost curves to one or more cost variables associated with a set of linear equations according to the following relationship;
ccom(i,t)=Σ
kccompl(i,t,k)·
ω
compl(i,t,k),wherein ccom(i,t) is a cost variable for an energy commodity bid i at time step t;
k is a breakpoint of a piecewise linear bid cost curve;
ccompl(i,t,k) is a piecewise linear bid cost curve breakpoint for energy commodity bid i at time step t at breakpoint k;
ω
compl(i,t,k) is a weighting variable associated with the piecewise linear bid cost curve commodity bid i at time step t at breakpoint k;calculating an optimal dispatch of energy and energy reserve responsive to the cost variable considering said constraints of the market participants using a mixed integer linear programming technique; pricing the optimal dispatch of energy and energy reserve; and providing the pricing to the market participants.
-
-
18. A computer readable medium containing program instructions recorded therein, which, when executed by a computer, causing the computer to implement a method for optimal energy and energy reserve dispatching in an electricity market of market participants, said method comprising:
-
inputting constraints of the market participants; receiving energy and energy reserve bids from the market participants; defining piecewise linear bid cost curves having respective breakpoints corresponding to the energy and energy reserve bids; converting the piecewise linear bid cost curves to one or more cost variables associated with a set of linear equations according to the following relationship;
ccom(i,t)=Σ
kccompl(i,t,k)·
ω
compl(i,t,k),wherein ccom(i,t) is a cost variable for an energy commodity bid i at time step t;
k is a breakpoint of a piecewise linear bid cost curve;
ccompl(i,t,k) is a piecewise linear bid cost curve breakpoint for energy commodity bid i at time step t at breakpoint k;
ω
compl(i,t,k) is a weighting variable associated with the piecewise linear bid cost curve commodity bid i at time step t at breakpoint k;calculating an optimal dispatch of energy and energy reserve responsive to the cost variable considering said constraints of the market participants using a mixed integer linear programming technique; pricing the optimal dispatch of energy and energy reserve considering said constraints; and providing the pricing to the market participants.
-
Specification