Systems, methods and apparatus for improved energy management systems with security-oriented probabilistic wind power generation dispatch

• US 10,041,476 B2
• Filed: 09/14/2015
• Issued: 08/07/2018
• Est. Priority Date: 09/02/2014
• Status: Active Grant

• Current Assignee: Siemens Industry Incorporated (Siemens AG)
• Original Assignee: Siemens Industry Incorporated (Siemens AG)
• Inventors: Chen, Dingguo, York, Michael E.
• Primary Examiner(s): Dunn, Darrin D
• Application Number:
  US14/853,068
• Publication Number:
  US 20160061189A1
• Time in Patent Office: 1,058 Days
• CPC Class Codes: F03D 7/0284 in relation to the state of the electric grid
• CPC Class Codes: F03D 7/048 controlling wind farms
• CPC Class Codes: F05B 2270/404 active, predictive, or anticipative
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction

Abstract

Embodiments provide systems, methods and apparatus for controlling an energy delivery system including providing an energy management system (EMS) having a wind power management (WPM) system and using the WPM system for determining sensitivity values for a plurality of wind farms within the energy delivery system; maximizing wind power generation from the plurality of wind farms within a set of security limits defined based on the sensitivity values; minimizing wind power generation loss from the plurality of wind farms; determining wind farm security-priority groups; minimizing wind power generation production cost based on cost priority of the wind farms in each security-priority group; and minimizing wind power generation production cost based on energy bids for each wind farm in each security-priority group. Numerous other aspects are provided.

Claims

1. A method of controlling an energy delivery system, the method comprising:

providing an energy management system (EMS) including a wind power management (WPM) system;

determining sensitivity values for a plurality of wind farms within the energy delivery system using the WPM system;

maximizing wind power generation from the plurality of wind farms within a set of security limits defined based on the sensitivity values using the WPM system;

minimizing wind power generation loss from the plurality of wind farms using the WPM system;

determining wind farm security-priority groups using the WPM system;

minimizing wind power generation production cost based on cost priority of the wind farms in each security-priority group using the WPM system;

minimizing wind power generation production cost based on energy bids for each wind farm in each security-priority group using the WPM system;

conducting a fault analysis to identify which wind farms would trip if a contingency is applied;

computing a total loss of wind power from those wind farms that would trip; and

for each of the contingencies, comparing the total loss of wind power to pre-designated wind power loss thresholds for determining a contingency ranking,

wherein the contingency may be ranked as a critical contingency, a semi-critical contingency or a non-critical contingency,

wherein the critical contingency is that which causes a wind generation loss that is greater than a maximum admissible wind generation loss,

wherein the semi-critical contingency is that which causes the wind generation loss that added to a configurable adder constant is greater than the maximum admissible wind generation loss, and

wherein the non-critical contingency is that which are neither critical contingencies nor semi-critical contingencies.

2. The method of claim 1 wherein determining the sensitivity values includes determining, for each wind farm, whether each of a plurality of three-phase short-circuit contingencies applied to the wind farm shuts off the wind farm.

3. The method of claim 2 wherein maximizing wind power generation includes maximizing wind power generation subject to constraints based on the fault analysis wherein a total wind generation loss will not be greater than an admissible maximum for the plurality of applied contingencies.

4. The method of claim 3 wherein minimizing wind power generation loss includes minimizing a total wind generation loss amount due to the plurality of contingencies applied while maximizing wind power generation, subject to constraints based on fault analysis.

5. The method of claim 1 wherein determining wind farm security-priority groups includes grouping wind farms based on a ranking of sensitivity values.

6. The method of claim 1 wherein minimizing wind power generation production cost based on cost priority includes, for each of the security-priority groups, redistributing a group total wind power among the wind farms in the security-priority group based on a cost priority of each wind farm in the security-priority group.

7. The method of claim 1 wherein minimizing wind power generation production cost based on energy bids includes, for each of the security-priority groups, redistributing a group total wind power among the wind farms in the security-priority group based on an energy bid of each wind farm in the security-priority group.

8. An energy management system (EMS) comprising:

a process controller;

a memory coupled to the process controller and storing instructions executable on the process controller, the instructions operable to cause the processor to;

determine sensitivity values for a plurality of wind farms within an energy delivery system;

maximize wind power generation from the plurality of wind farms within a set of security limits defined based on the sensitivity values;

minimize wind power generation loss from the plurality of wind farms;

determine wind farm security-priority groups;

minimize wind power generation production cost based on cost priority of the wind farms in each security-priority group;

minimize wind power generation production cost based on energy bids for each wind farm in each security-priority group;

conduct a fault analysis to identify which wind farms would trip if a contingency is applied;

compute a total loss of wind power from those wind farms that would trip; and

for each of the contingencies, comparing the total loss of wind power to pre-designated wind power loss thresholds for determining a contingency ranking,

wherein the contingency may be ranked as a critical contingency, a semi-critical contingency or a non-critical contingency,

wherein the critical contingency is that which causes a wind generation loss that is greater than a maximum admissible wind generation loss,

wherein the semi-critical contingency is that which causes the wind generation loss that added to a configurable adder constant is greater than the maximum admissible wind generation loss, and

wherein the non-critical contingency is that which are neither critical contingencies nor semi-critical contingencies.

9. The EMS of claim 8 wherein the instructions operable to cause the processor to determine sensitivity values includes instructions operable to cause the processor to determine, for each wind farm, whether each of a plurality of three-phase short-circuit contingencies applied to the wind farm shuts off the wind farm.

10. The EMS of claim 9 wherein the instructions operable to cause the processor to maximize wind power generation includes instructions operable to cause the processor to maximize wind power generation subject to constraints based on the fault analysis wherein a total wind generation loss will not be greater than an admissible maximum for the plurality of applied contingencies.

11. The EMS of claim 10 wherein the instructions operable to cause the processor to minimize wind power generation loss includes instructions operable to cause the processor to minimize a total wind generation loss amount due to the plurality of contingencies applied while maximizing wind power generation, subject to constraints based on fault analysis.

12. The EMS of claim 8 wherein the instructions operable to cause the processor to determine wind farm security-priority groups includes instructions operable to cause the processor to group wind farms based on a ranking of sensitivity values.

13. The EMS of claim 8 wherein the instructions operable to cause the processor to minimize wind power generation production cost based on cost priority includes instructions operable to cause the processor to, for each of the security-priority groups, redistribute a group total wind power among the wind farms in the security-priority group based on a cost priority of each wind farm in the security-priority group.

14. The EMS of claim 8 wherein the instructions operable to cause the processor to minimize wind power generation production cost based on energy bids includes instructions operable to cause the processor to, for each of the security-priority groups, redistribut a group total wind power among the wind farms in the security-priority group based on an energy bid of each wind farm in the security-priority group.