Systems, Methods, and Apparatus for Coordinated Volt/VAR Control in Power Distribution Networks

• US 20120197450A1
• Filed: 04/27/2011
• Published: 08/02/2012
• Est. Priority Date: 01/27/2011
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Krok, Michael Joseph, Ren, Wei, Genc, Sahika
• Application Number:
  US13/095,263
• Publication Number:
  US 20120197450A1
• Time in Patent Office: Days
• US Class Current: 700/291
• CPC Class Codes: H02J 3/003 Load forecast, e.g. methods or systems for forecasting future load demand
• CPC Class Codes: H02J 3/16 by adjustment of reactive power
• CPC Class Codes: Y02E 40/30 Reactive power compensation
• CPC Class Codes: Y04S 10/50 Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

Certain embodiments of the invention may include systems, methods, and apparatus for providing coordinated volt/volt-amps-reactive (VAR) control in power distribution networks. According to an example embodiment of the invention, a method is provided for coordinating voltage and volt-amps-reactive (VAR) control (VVC) in power distribution networks. The method can include receiving one or more VVC objective functions from a distribution management system (DMS); determining at least one microgrid conservation voltage reduction factor (CVRF); forecasting microgrid load profile for a predetermined period of time; controlling microgrid VVC resources based at least on the one or more received VVC objective functions; and communicating the at least one microgrid CVRF and the forecasted load profile to the DMS.

Claims

1. A method for coordinating voltage and volt-amps-reactive (VAR) control (VVC) in power distribution networks, the method comprising:

receiving one or more VVC objective functions from a distribution management system (DMS);

determining at least one microgrid conservation voltage reduction factor (CVRF);

forecasting microgrid load profile for a predetermined period of time;

controlling microgrid VVC resources based at least on the one or more received VVC objective functions; and

communicating the at least one microgrid CVRF and the forecasted load profile to the DMS.

2. The method of claim 1, further comprising aggregating microgrid resource capability information.

3. The method of claim 1, further comprising communicating microgrid resource capability information to the DMS.

4. The method of claim 1, wherein microgrid VVC resources comprise one or more capacitor banks.

5. The method of claim 1, wherein microgrid VVC resources comprise one or more voltage regulators.

6. The method of claim 1, wherein at least one of the one or more VVC objective functions comprises instructions to achieve one or more of:

minimize one or more losses, minimize load over a predefined period of time, maximize load over a predefined period of time, or maintain an average voltage level within the network.

7. The method of claim 1, wherein at least one of the one or more VVC objective functions comprises instructions to adjust one or more of distribution system VVC or microgrid VVC resources.

8. A system comprising:

at least one power distribution network;

at least one distribution management system (DMS);

one or more microgrids;

one or more microgrid controllers (MGC) in communication with the one or more microgrids and the DMS, wherein the one or more MGC comprises at least one memory for storing data and computer-executable instructions; and

at least one processor configured to access the at least one memory and further configured to execute the computer-executable instructions for;

receiving one or more VVC objective functions from a distribution management system (DMS);

determining at least one microgrid conservation voltage reduction factor (CVRF);

forecasting microgrid load profile for a predetermined period of time;

controlling microgrid resources based at least on the one or more received objective functions; and

communicating the at least one microgrid CVRF and the forecasted load profile to the DMS.

9. The system of claim 8, wherein at least one of the one or more MCG is further configured for aggregating microgrid resource capability information.

10. The system of claim 8, wherein at least one of the one or more MCG is further configured communicating the microgrid resource capability information to the DMS.

11. The system of claim 8, wherein microgrid VVC resources comprise one or more capacitor banks.

12. The system of claim 8, wherein microgrid VVC resources comprise one or more voltage regulators.

13. The system of claim 8, wherein at least one of the one or more objective functions comprises instructions to achieve one or more of:

minimize one or more losses, minimize load over a predefined period of time, maximize load over a predefined period of time, or maintain an average voltage level within the network.

14. The system of claim 8, wherein at least one of the one or more objective functions comprises instructions to adjust one or more VVC resources.

15. An apparatus comprising:

at least one distribution management system (DMS);

one or more microgrid controllers (MGC) in communication with the one or more microgrids and the DMS, wherein the one or more MGC comprises at least one memory for storing data and computer-executable instructions; and

at least one processor configured to access the at least one memory and further configured to execute the computer-executable instructions for;

receiving one or more objective functions from a distribution management system (DMS);

determining at least one microgrid conservation voltage reduction factor (CVRF);

forecasting microgrid load profile for a predetermined period of time;

controlling microgrid resources based at least on the one or more received objective functions; and

communicating the at least one microgrid CVRF and the forecasted load profile to the DMS.

16. The apparatus of claim 15, wherein at least one of the one or more MCG is further configured for aggregating microgrid resource capability information.

17. The apparatus of claim 15, wherein at least one of the one or more MCG is further configured communicating the microgrid resource capability to the DMS.

18. The apparatus of claim 15, wherein microgrid VVC resources comprise one or more capacitor banks.

19. The apparatus of claim 15, wherein microgrid VVC resources comprise one or more voltage regulators.

20. The apparatus of claim 15, wherein at least one of the one or more objective functions comprises instructions to achieve one or more of:

minimize one or more losses, minimize load over a predefined period of time, maximize load over a predefined period of time, or maintain an average voltage level within the network.