DYNAMIC PROBABILITY-BASED POWER OUTAGE MANAGEMENT SYSTEM

• US 20160241031A1
• Filed: 02/17/2016
• Published: 08/18/2016
• Est. Priority Date: 02/18/2015
• Status: Abandoned Application

• Current Assignee: NEC Laboratories America Inc (NEC Corporation)
• Original Assignee: NEC Laboratories America Inc (NEC Corporation)
• Inventors: Hooshmand, Ali, Asghari, Babak, Sharma, Ratnesh
• Application Number:
  US15/046,110
• Publication Number:
  US 20160241031A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 2300/10 The dispersed energy generation being of fossil origin, e.g. diesel generators
• CPC Class Codes: H02J 2300/20 The dispersed energy generation being of renewable origin
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/38 Arrangements for parallely feeding a single network by two or more generators, converters or transformers
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 3/466 Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand

Abstract

A method and system are provided for managing a power system having a grid portion, a load portion, a storage portion, and at least one of a renewable portion and a fuel-based portion. The method includes generating, by a scheduler responsive to an indication of an occurrence of a power outage, an outage duration prediction. The method further includes solving, by the scheduler, an economic dispatch problem using a long-term energy optimization model. The method also includes generating, by the scheduler based on an analysis of the long-term energy optimization model, an energy management directive that controls, for a time period of the outage duration prediction, the storage portion and at least one of the renewable portion and the fuel-based portion. The method additionally includes controlling, by a controller responsive to the directive, the storage portion and the at least one of the renewable portion and the fuel-based portion.

Claims

1. A method for managing a power system having a power grid portion, a load portion, an energy storage portion, and at least one of a renewable energy generation portion and a fuel-based energy generation portion, the method comprising:

generating, by a power outage scheduler responsive to an indication of an occurrence of a power outage, an outage duration prediction for the power outage;

solving, by the power outage scheduler, an economic dispatch problem using a long-term energy optimization model;

generating, by the power outage scheduler based on an analysis of the long-term energy optimization model, an energy management directive that controls, for a time period of the outage duration prediction, the operation of the energy storage portion and at least one of the renewable energy generation portion and the fuel-based energy generation portion; and

controlling, by a power management controller responsive to the energy management directive, the operation of the energy storage portion and the at least one of the renewable energy generation portion and the fuel-based energy generation portion.

2. The method of claim 1, wherein the outage duration prediction is generated by performing a statistical analysis over historical power related data to create a probability distribution function of outage duration, and generating the outage duration prediction based on the probability distribution function.

3. The method of claim 1, wherein the long-term energy optimization model is generated based on the historical power-related data.

4. The method of claim 1, wherein the long-term energy optimization model is generated so as to maximize energy storage portion usage revenues, fuel-based energy generation efficiency, and renewable energy utilization of the power system.

5. The method of claim 1, wherein the energy management directive is generated by performing an optimization results post-analysis on the long-term energy optimization model to determine an efficient allocation of resources and a throughput for the energy storage portion during the power outage.

6. The method of claim 1, wherein the energy management directive comprises utilizing at least the energy storage portion to meet power system demands and switching to the at least one of the renewable energy generation portion and the fuel-based energy generation portion when a capacity of the energy storage portion is below a threshold capacity.

7. The method of claim 6, wherein the energy management directive further comprises charging the energy storage portion using a portion of the energy provided by the renewable energy generation portion and the fuel-based energy generation portion.

8. The method of claim 1, wherein the power outage results in the power grid portion being disconnected from the load portion, and wherein the energy management directive comprises supplying power to the load portion using the grid portion at times other than during the power outage, and supplying power to the load portion using at least one of the renewable energy generation portion and the fuel-based energy generation portion during the power outage.

9. The method of claim 8, wherein the energy management directive further comprises charging the energy storage portion using the grid portion at the times other than during the power outage, and charging the energy storage portion using at least one of the renewable energy generation portion and the fuel-based energy generation portion during the power outage.

10. The method of claim 1, wherein the energy management directive comprises increasing an output of the fuel-based energy generation portion to increase an operational efficiency of the fuel-based energy generation portion.

11. The method of claim 1, wherein the energy management directive comprises utilizing the energy storage portion so as to exhaust a capacity of the energy storage portion by an end of the power outage when the energy storage portion is charged during the power outage by the at least one of the renewable energy generation portion and the fuel-based energy generation portion.

12. A non-transitory article of manufacture tangibly embodying a computer readable program which when executed causes a computer to perform the steps of claim 1.

13. A system for managing a power system having a power grid portion, a load portion, an energy storage portion, and at least one of a renewable energy generation portion and a fuel-based energy generation portion, the system comprising:

a power outage scheduler configured to;

generate an outage duration prediction for a power outage responsive to an indication of an occurrence of the power outage,

solve an economic dispatch problem using a long-term energy optimization model,

generate, based on an analysis of the long-term energy optimization model, an energy management directive that controls, for a time period of the outage duration prediction, the operation of the energy storage portion and at least one of the renewable energy generation portion and the fuel-based energy generation portion; and

a power management controller for controlling, responsive to the energy management directive, the operation of the energy storage portion and the at least one of the renewable energy generation portion and the fuel-based energy generation portion.

14. The system of claim 13, wherein the outage duration prediction is generated by performing a statistical analysis over historical power related data to create a probability distribution function of outage duration, and generating the outage duration prediction based on the probability distribution function.

15. The system of claim 13, wherein the long-term energy optimization model is generated based on the historical power-related data.

16. The system of claim 13, wherein the long-term energy optimization model is generated so as to maximize energy storage portion usage revenues, fuel-based energy generation efficiency, and renewable energy utilization of the power system.

17. The system of claim 13, wherein the energy management directive is generated by performing an optimization results post-analysis on the long-term energy optimization model to determine an efficient allocation of resources and a throughput for the energy storage portion during the power outage.

18. The system of claim 13, wherein the energy management directive comprises utilizing at least the energy storage portion to meet power system demands and switching to the at least one of the renewable energy generation portion and the fuel-based energy generation portion when a capacity of the energy storage portion is below a threshold capacity.

19. The system of claim 18, wherein the energy management directive further comprises charging the energy storage portion using a portion of the energy provided by the renewable energy generation portion and the fuel-based energy generation portion.

20. The system of claim 13, wherein the power outage results in the power grid portion being disconnected from the load portion, and wherein the energy management directive comprises supplying power to the load portion using the grid portion at times other than during the power outage, and supplying power to the load portion using at least one of the renewable energy generation portion and the fuel-based energy generation portion during the power outage.