Open-loop and/or closed-loop control of power generation installations

Patent metadata

Field	Value
Publication number	US-11734776-B2
Application number	US-202016815741-A
Country	US
Kind code	B2
Filing date	Mar 11, 2020
Priority date	Sep 11, 2017
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A method performed in which a forecast, a generation information, and a regulation information are obtained. A control information is determined in the event that the regulation information is indicative of over- or underproduction. The control information is indicative of a control of the amount of electrical energy generated by power generating plants. The control information is determined based on the obtained regulation and generation information. Based on the time at which the regulation information is obtained, the remaining time of a predetermined interval is determined. Operating points for the plants are determined such that, for the remaining time, the amount of energy generated by the plants for the predetermined interval saves or generates at least one determined difference between the amount of energy generated according to the forecast and generation information. The operating points are based on the control information. The determined control information is output.

First claim

What is claimed is:

1. A method for controlling and/or regulating the amount of electrical energy generated by one or more power generating plants performed by one or more apparatuses, comprising:
obtaining a forecast information indicative of an amount of electrical energy generated by the one or more power generating plants that is to be generated within a predetermined interval;
obtaining a generation information representative of an amount of electrical energy generated by said one or more power generating plants, wherein said amount of generated electrical energy corresponds to said amount of electrical energy generated by said one or more power generating plants within said predetermined interval or is directly predicted for said predetermined interval;
obtaining a regulation information indicative of over- or underproduction of electrical energy generated by the one or more power generating plants for a given time within the predetermined interval if the specified interval has not yet expired and the amount of electrical energy to be generated according to the forecast information has already been generated for the specified interval, and vice versa;
determining a control information in the event that the regulation information is indicative of over- or underproduction, wherein the control information is indicative of a control and/or regulation of the amount of electrical energy generated by the one or more power generating plants, wherein the determining of the control information is at least partially based on the obtained regulation information and on the obtained generation information, wherein based on the determined time at which the regulation information is obtained, the remaining time of the predetermined interval is determined, wherein one or more operating points for the one or more power generating plants are determined such that for the remaining time of the predetermined interval, the amount of electrical energy generated by the one or more power generating plants for the predetermined interval saves or generates at least one determined difference between the amount of electrical energy generated according to the forecast information and according to the generation information, and wherein said determined one or more operating points are comprised by the control information, and wherein, based on the one or more operating points for controlling and/or regulating the one or more power generating plants, one or more control parameters for the one or more power generating plants are determined, which set the one or more power generating plants to the one or more operating points; and
outputting or causing the outputting of the determined control information, wherein, based on the determined control information, a control and/or regulation of the one or more power generating plants is to be carried out.

2. The method according to claim 1 , further comprising:
obtaining an availability information indicative of the availability of one or more power generating plants,
wherein the control information is further determined based on the obtained availability information.

3. The method according to claim 1 , wherein the obtaining of the regulation information is performed with a time delay to the obtaining of the generation information, and the remaining time of the predetermined interval is further determined based on the time delay.

4. The method according to claim 1 , wherein the forecast information comprises at least one long-term forecast information and at least one day-ahead forecast information which together totals the amount of electrical energy generated by the one or more power generating plants which is generated within the predetermined interval.

5. The method according to claim 1 , wherein the determining of the control information takes into account the time required to control and/or regulate the one or more power generating plants to the determined one or more operating points of the one or more power generating plants.

6. The method according to claim 5 , wherein the determining of the control information further comprises:
obtaining a remaining time information indicative of a time period until which the output or the initiation of the output of the determined control information must have taken place in order to control and/or regulate the one or more power generating plants to the maximum possible generation amount of electrical energy of the one or more power generating plants before the expiry of the predetermined interval,
wherein the determining of the control information is further based on the obtained remaining time information.

7. The method according to claim 1 , wherein the determining of the control information further comprises:
determining of a surplus information, wherein the surplus information determines those power generating plants of the one or more power generating plants which are to be reduced in the amount of generated electrical energy and which sanctioning causes the lowest costs, in the case that despite the maximum possible amount of generated electrical energy of the one or more power generating plants the amount of electrical energy is not generated according to the forecast information.

8. The method according to claim 1 , wherein the one or more operating points have a lower limit which limits the minimum possible generating capacity of the respective power generating plant downwards.

9. The method according to claim 1 , wherein the one or more power generating plants comprise one or more power generating apparatuses, wherein the determined control information sets the respective operating point for the respective power generating apparatus in dependence on the operating points of the respective power generating plants, wherein the at least one operating point for the respective power generating plant is determined in such a way that the one or more power generating plants cumulatively save or generate more the difference of the amount of generated electric energy according to the generation information that is determined between the control information and the forecast information.

10. The method according to claim 1 , wherein the control information further determines, taking into account that the one or more operating points of the one or more power generating plants is controlled and/or regulated again to the respective maximum possible generation power of electrical energy before the expiry of the predetermined interval.

11. The method according to claim 1 , wherein the one or more operating points of the one or more power generating plants are automatically triggered to the maximum possible generation output of electrical energy by the one or more power generating plants at a point in time which lies before the expiry of the predetermined interval and is determined in such a way that with the expiry of the predetermined interval the one or more operating points of the one or more power generating plants are again controlled and/or regulated to the maximum possible generation output of electrical energy.

12. The method according to claim 1 , wherein the one or more power generating plants are photovoltaic plants, wind energy plants, hydroelectric or hydroelectric power plants, or a combination thereof.

13. The method according to claim 1 , wherein the determining of the control information further comprises:
determining a prediction information indicative of a predicted regulation information for a period shorter than the remaining period of the predetermined interval, wherein the prediction information is determined based on historical information,
wherein the control information is further

Assignees

• Marx Thomas
• Innogy Se

Inventors

• Marx Thomas

Classifications

• H02J2101/28

  Wind energy · CPC title

• H02J2103/35

  Grid-level management of power transmission or distribution systems, e.g. load flow analysis or active network management · CPC title

• G06Q50/06 Primary

  Energy or water supply · CPC title

• G05B15/02

  electric · CPC title

• G06Q10/04 Primary

  Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem" (market predictions or forecasting for commercial activities G06Q30/0202) · CPC title