Optimal control technology for distributed energy resources

Patent metadata

Field	Value
Publication number	US-11043815-B2
Application number	US-201816049785-A
Country	US
Kind code	B2
Filing date	Jul 30, 2018
Priority date	Jul 28, 2017
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

Devices and methods of allocating distributed energy resources (DERs) to loads connected to a microgrid based on the cost of the DERs are provided. The devices and methods may determine one or more microgrid measurements. The devices and methods may determine one or more real-time electricity prices associated with utility generation sources. The devices and methods may determine one or more forecasts. The devices and methods may determine a cost associated with one or more renewable energy sources within the microgrid. The devices and methods may determine an allocation of the renewable sources to one or more loads in the microgrid.

First claim

What is claimed is:

1. A method comprising:
determining, by one or more computer processors coupled to at least one memory, one or more microgrid measurements associated with a microgrid;
determining, by the one or more computer processors, one or more real-time electricity prices associated with utility generation sources;
determining, by the one or more computer processors, based at least in part on the one or more microgrid measurements and the one or more real-time electricity prices, one or more forecasts;
determining, by the one or more computer processors, based at least in part on the one or more forecasts, an estimated cost associated with one or more renewable energy sources within the microgrid; and
determining, by the one or more computer processors, based at least in part on the estimated cost, an estimated allocation of the one or more renewable energy sources to one or more loads in the microgrid, wherein the estimated allocation is determined based at least in part on minimizing the estimated cost.

2. The method of claim 1 , wherein the microgrid measurements include real power measurements and reactive power measurements.

3. The method of claim 2 , wherein the microgrid measurements are measurements of the one or more renewable energy sources.

4. The method of claim 1 , wherein the utility generation sources comprise coal fired plants, natural gas plants, wind farms, solar photovoltaic (PV) plants, hydroelectric plants, or nuclear plants.

5. The method of claim 4 , wherein the one or more forecasts comprise real power forecasts of the solar PV plants forecasts and load forecasts of power consumed by the one or more loads.

6. The method of claim 1 , wherein the estimated allocation of the one or more renewable energy sources is based at least in part on a lowest costing renewable source of the one or more renewable energy sources.

7. The method of claim 6 , wherein the estimated allocation of the one or more renewable energy sources is based at least in part on the one or more forecasts.

8. The method of claim 1 , wherein the estimated allocation is based at least in part on a sample based model predictive optimization (SBMPO) of the one or more renewable energy sources.

9. The method of claim 8 , wherein the SBMPO is based at least in part on the estimated cost, the one or more forecasts, and the one or more real-time electricity prices.

10. The method of claim 1 , wherein the one or more forecasts is based at least in part on a weather forecast.

11. The method of claim 1 , further comprising:
generating one or more control signals based on the estimated allocation; and
causing to send the control signals to one or more controllers in the microgrid.

12. The method of claim 11 , wherein the one or more controllers comprise a solar PV controller, a battery storage controller, or a load controller.

13. A device comprising:
at least one memory storing computer-executable instructions; and
at least one processor configured to access the at least one memory and execute the computer-executable instructions to:
determine, by one or more computer processors coupled to at least one memory, one or more microgrid measurements associated with a microgrid;
determine, by the one or more computer processors, one or more real-time electricity prices associated with utility generation sources;
determine, by the one or more computer processors, based at least in part on the one or more microgrid measurements and the one or more real-time electricity prices, one or more forecasts;
determine, by the one or more computer processors, based at least in part on the one or more forecasts, an estimated cost associated with one or more renewable energy sources within the microgrid; and
determine, by the one or more computer processors, based at least in part on the estimated cost, an estimated allocation of the one or more renewable energy sources to one or more loads in the microgrid, wherein the estimated allocation is determined based at least in part on minimizing the estimated cost.

14. The device of claim 13 , wherein the microgrid measurements include real power measurements and reactive power measurements.

15. The device of claim 14 , wherein the microgrid measurements are measurements of the one or more renewable energy sources.

16. The device of claim 13 , wherein the utility generation sources comprise coal fired plants, natural gas plants, wind farms, solar photovoltaic (PV) plants, hydroelectric plants, or nuclear plants.

17. The device of claim 16 , wherein the one or more forecasts comprise real power forecasts of the solar PV plants forecasts and load forecasts of power consumed by the one or more loads.

18. The device of claim 13 , wherein the estimated allocation of the one or more renewable energy sources is based at least in part on a lowest costing renewable source of the one or more renewable energy sources.

19. A method of selecting one or more distributed energy sources for a forecasted load profile, the method comprising:
identifying the one or more distributed energy sources associated with a microgrid;
identifying the forecasted load profile;
identifying data associated with one or more of a time of day, current temperature, load over a previous time horizon, or day of a year;
determining, based at least in part on one or more measurements associated with the microgrid, and one or more real-time electricity prices associated with utility generation sources, one or more forecasts;
determining, based at least in part on the one or more forecasts, an estimated cost associated with the one or more distributed energy sources; and
forecasting a combination of the one or more distributed energy sources based at least in part on the identified data and the forecasted load profile, wherein forecasting the combination of the one or more distributed energy sources is based at least in part on minimizing the estimated cost associated with the one or more distributed energy sources.

20. The method of claim 19 , wherein forecasting the one or more distributed energy sources is based at least in part on a neural network applied to the identified data.

Assignees

• Florida State Univ Research Foundation
• Univ Florida State Res Found Inc

Inventors

• Meeker Richard H
• Faruque Md Omar
• Ospina Juan
• Newaz Alvi
• Collins Emmanuel
• Francis Griffin
• Gupta Nikhil

Classifications

• H02J2103/30

  Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks · CPC title

• H02J2101/24

  Photovoltaics · CPC title

• H02J13/12

  Monitoring network conditions, e.g. electrical magnitudes or operational status · CPC title

• H02J2105/52

  for limitation of the power consumption in the networks or in one section of the networks, e.g. load shedding or peak shaving · CPC title

• H02J3/32

  using batteries or super capacitors with converting means · CPC title