System, method and computer program product for enhancing commercial value of electrical power produced from a renewable energy power production facility

• US 10,135,253 B2
• Filed: 06/15/2001
• Issued: 11/20/2018
• Est. Priority Date: 12/29/2000
• Status: Active Grant

• Current Assignee: Hitachi Energy Limited
• Original Assignee: ABB Schweiz AG (ABB Limited)
• Inventors: Lof, Per-Anders Kristian, Gertmar, Lars Gustaf Ingolf, Andren, Lars Anders Tommy
• Primary Examiner(s): Nguyen, Tan D
• Application Number:
  US98/810,01
• Time in Patent Office: 6,367 Days
• Field of Search: 705 1, 705412, 705413, 36414801, 364149, 307 29, 307 45, 307 47
• CPC Class Codes: F03D 9/257 the wind motor being part of a wind farm
• CPC Class Codes: F05B 2210/16 Air or water being indistinctly used as working fluid, i.e. the machine can work equally with air or water without any modification
• CPC Class Codes: F05B 2270/20 to optimise the performance of a machine
• CPC Class Codes: G06Q 40/04 Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
• 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 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy wind motors F03D
• CPC Class Codes: H02J 2300/40 wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
• CPC Class Codes: H02J 3/008 involving trading of energy or energy transmission rights
• 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
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• CPC Class Codes: Y02P 80/20 using renewable energy
• CPC Class Codes: Y02P 90/90 Financial instruments for climate change mitigation, e.g. environmental taxes, subsidies or financing
• 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
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

A method, system and computer program product enhance the commercial value of electrical power produced from a wind turbine production facility. Features include the use of a premier power conversion device that provides an alternative source of power for supplementing an output power of the wind turbine generation facility when lull periods for wind speed appear. The invention includes a communications infrastructure and coordination mechanism for establishing a relationship with another power production facility such that when excess electrical power is produced by the wind turbine facility, the excess may be provided to the power grid while the other energy production facility cuts back on its output production by a corresponding amount. A tracking mechanism keeps track of the amount of potential energy that was not expended at the other facility and places this amount in a virtual energy storage account, for the benefit of the wind turbine facility. When, the wind turbine power production facility experiences a shortfall in its power production output it may make a request to the other source of electric power, and request that an increase its power output on behalf of the wind turbine facility. This substitution of one power production facility for another is referred to herein as a virtual energy storage mechanism. Furthermore, another feature of the present invention is the use of a renewal power exchange mechanism that creates a market for trading renewable units of power, which have been converted into “premier power” and/or “guaranteed” by secondary sources of power source to provide a reliable source of power to the power grid as required by contract.

Claims

1. A method for coordinating power output from a renewable power production facility with an other power production facility so as to implement a virtual energy storage mechanism for the renewable power production facility, comprising steps of:

producing and applying to transmission lines of a transmission grid a predetermined amount of electric power collectively provided by the renewable power production facility and the other power production facility, the renewable power production facility applying a variable amount of electric power, and the other power production facility applying a controllable amount of electric power;

determining, with a hardware processor, that a produced amount of power produced by the renewable power production facility deviates from a threshold by a predetermined quantity;

informing, via digital communications, the other power production facility of said predetermined quantity;

adjusting and applying to the transmission lines a power output of the other power production facility by an amount that corresponds to said predetermined quantity and compensating for any deviation from the threshold by the renewable power production facility so as to have a resultant total power produced by or on behalf of the renewable power production facility to be approximately at said threshold when the predetermined quantity is within a production dynamic range of the other power production facility;

when the predetermined quantity is not within the production dynamic range of the other power production facility, informing, via said digital communications, an additional power production facility of said predetermined quantity so that the additional power production facility can compensate for the deviation from the threshold by the renewable power production facility so as to have the resultant total power produced by or on behalf of the renewable power production facility to be approximately at said threshold;

storing energy in the other power production facility, an amount of the stored energy corresponding to an amount of a production surplus of energy produced by the renewable power production facility;

keeping a record, in a computer storage memory, of the amount of the stored energy, and subsequently fulfilling a production obligation of the renewable power production facility by producing a portion of said amount of stored energy by the other power production facility on behalf of the renewable power production facility so as to provide more efficient and commercially valuable services by the renewable power production facility;

detecting a fault in the transmission grid; and

causing the renewable power production facility to provide short circuit power with sufficient current to trip a circuit protection device to disconnect the renewable power production facility from the transmission grid,

wherein the other power production facility serves as the virtual energy storage mechanism that, in response to receiving a request from the renewable power production facility to use the stored energy, releases stored energy to the transmission lines and produces power that covers a production shortfall by the renewable power production facility, and that increases its potential energy by capturing and storing energy based on the production surplus of the renewable power production facility, the production surplus corresponding to energy produced in excess of a minimum amount of energy that is produced by the renewable power facility and applied to the transmission lines,

wherein the other power production facility stores the production surplus of the renewable power production facility only when an amount of energy produced by the renewable power production facility exceeds the minimum amount of energy,

wherein the production surplus of the renewable power production facility is transformed into said potential energy of the other power production facility,

wherein the method further comprises offering for sale a unit of power by sending a predetermined message,

wherein the predetermined message includes a specific identifier of said unit of power and a statistical indicator,

wherein said unit of power includes an undetermined amount of electric power from the renewable power production facility and an adjusted power output from the other power production facility at a predetermined future time and guaranteeing delivery of said unit of power, and

wherein the statistical indicator indicates a likelihood of actually providing said unit of power and is derived based upon meteorological data and past performance data of the renewable power production facility.

2. The method of claim 1, wherein the renewable power production facility is a wind turbine electric power production facility.

3. The method of claim 1, wherein said keeping step includes allowing for a negative balance during peak production times, and adding to said amount of stored energy during off-peak times.

4. The method of claim 1, further comprising a step of selling said unit of power output from the renewable power production facility when a market sale price for said unit of power exceeds an estimated future value of said unit of power produced at a later time.

5. The method of claim 1, wherein said offering for sale includes offering for sale said unit of power on a renewable exchange.

6. The method of claim 5, further comprising a step of setting a price at which said unit of power is offered for sale, said price being greater than or equal to an estimated value of virtually storing said unit of power by increasing said amount of stored energy by said unit of power for use at a later time.

7. The method of claim 5, further comprising a step of notifying an operator of the renewable power production facility when said unit of power is sold.

8. The method of claim 5, further comprising a step of offering said meteorological data associated with the renewable power production facility when said produced amount of power output from the renewable power production facility is offered for delivery, and estimating a likelihood of delivery using said meteorological data.

9. The method of claim 8, further comprising a step of placing a value on said unit of power based on a future likelihood of delivery.

10. The method of claim 1, further comprising a step of obtaining transmission rights for transferring said produced amount of power output from the renewable power production facility to the transmission grid that connects to the other power production facility when said adjusting step adjusts the power output to a lower level than for what the other power production facility is obligated to provide.

11. The method of claim 1, further comprising a step of selling a predetermined portion of an accumulated energy stored at said virtual energy storage mechanism.

12. The method of claim 1, further comprising a step of controlling directly the other power production facility to implement said adjusting step through a ganged operation with the renewable power production facility.

13. The method of claim 1, wherein said adjusting step includes adjusting the power output by receiving a data message via an electronic communication with the renewable power production facility.

14. The method of claim 1, wherein said adjusting step includes informing the other power production facility of said predetermined quantity using at least one of non-electronic communication and telephonic communication.