Security constrained optimal dispatch for load prediction for electricity markets
View Patent ↗The present invention is an apparatus for optimizing security constrained dispatch and pricing for the wholesale energy trading market. The imbalance market uniquely requires a real-time market for bidding and for providing the energy generation adjustments required to satisfy the imbalance. The present invention address the above noted needs by providing a real-time imbalance engine to support and implement the equitable imbalance requirement via a computer system implementation. Additionally, the present invention allows the market generators and loads to provide electronic bids for resolution while considering constraints on the demand and supply system.
1. A computer implemented system for optimal dispatch of energy generation and energy load in an energy imbalance market of an energy distribution system separate from a bilateral energy trading market and a dedicated regulation function of the energy distribution system, the energy distribution system including an energy distribution region subdivided into a plurality of different control areas including imbalance market participants, the system comprising:
means for receiving from a plurality of imbalance market participants, including energy generation participants and energy consuming load participants in an energy distribution region, energy supply and energy demand requirements for imbalance energy in an energy imbalance market;
means for determining optimal dispatch of energy generation and energy load for each imbalance market participant for balancing generation and load imbalances in the imbalance market responsive to security constraints of at least one imbalance market participant, wherein determining optimal dispatch is based on a direct current line transmission security constraint according to the relationship:
Pow
line
base
+
∑
unit
∈
G
SF
line
;
unit
·
(
En
unit
t
-
En
unit
base
)
-
∑
load
∈
L
SF
line
;
load
·
(
En
load
t
-
En
load
base
)
,
wherein
Pow
line
base
is a power line base flow, unit is one of a group of energy generators G, SF line;unit is a shift factor for the unit on the line,
En
unit
t
is the unit energy for time interval t,
En
unit
base
is the unit base energy, load is one of a group of energy loads L, SF line;load is a shift factor for the load on the line,
En
load
t
is the load energy for the time interval t, and
En
load
base
is the load base energy; and
means for generating balancing dispatch instructions responsive to the determined optimal dispatch of energy generation and energy load for each imbalance market participant for use in controlling their respective energy generation and energy load to remedy energy generation and energy load imbalances in the imbalance market other than the use of a bilateral energy trading market and a dedicated regulation function of the energy distribution system.
2. The system of claim 1 , wherein said constraint is a market participant energy limit.
3. The system of claim 1 , wherein said constraint is a load energy limit.
4. The system of claim 1 , wherein said constraint is a market participant regulation availability.
5. The system of claim 1 , wherein said constraint is a market participant regulation range.
6. The system of claim 1 , wherein said constraint is a market participant spinning reserve limit.
7. The system of claim 1 , wherein said constraint is a load spinning reserve limit.
8. The system of claim 1 , wherein said constraint is a market participant non-spinning reserve limit.
9. The system of claim 1 , wherein said constraint is a market participant capacity limit.
10. The system of claim 1 , wherein said constraint is a load capacity limit.
11. A method for optimal dispatch of energy generation and energy load in an energy imbalance market of an energy distribution system separate from a bilateral energy trading market and a dedicated regulation function of the energy distribution system, the energy distribution system including an energy distribution region subdivided into a plurality of different control areas including imbalance market participants, the method comprising:
receiving from a plurality of imbalance market participants, including energy generation participants and energy consuming load participants in an energy distribution region, energy supply and energy demand requirements for imbalance energy in an energy imbalance market;
determining optimal dispatch of energy generation and energy load for each imbalance market participant for balancing generation and load imbalances in the imbalance market responsive to security constraints of at least one imbalance market participant, wherein determining optimal dispatch is based on a direct current line transmission security constraint according to the relationship:
Pow
line
base
+
∑
unit
∈
G
SF
line
;
unit
·
(
En
unit
t
-
En
unit
base
)
-
∑
load
∈
L
SF
line
;
load
·
(
En
load
t
-
En
load
base
)
,
wherein
Pow
line
base
is a power line base flow, unit is one of a group of energy generators G, SF line;unit is a shift factor for the unit on the line,
En
unit
t
is the unit energy for time interval t,
En
unit
base
is the unit base energy, load is one of a group of energy loads L, SF line;load is a shift factor for the load on the line,
En
load
t
is the load energy for the time interval t, and
En
load
base
is the load base energy; and
generating balancing dispatch instructions responsive to the determined optimal dispatch of energy generation and energy load for each imbalance market participant for use in controlling their respective energy generation and energy load to remedy energy generation and energy load imbalances in the imbalance market other than the use of a bilateral energy trading market and a dedicated regulation function of the energy distribution system.