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DE-102022209870-B4 - Method and distribution system for distributing electrical energy

DE102022209870B4DE 102022209870 B4DE102022209870 B4DE 102022209870B4DE-102022209870-B4

Abstract

Method (100) for distributing electrical energy to reduce excess electrical energy from a public electricity grid in a controlled manner, the method (100) comprising: - Providing (101) a quantity of electrical energy by means of a number of renewable power plants (205), - Issuing (103) an activation request to the respective consumers (203) in the event that the supplied quantity of electrical energy is greater than a specified threshold, - Providing (105) electrical energy from the quantity of electrical energy to consumers (203) who have agreed to the activation request.

Inventors

  • Elvir Zahirovic

Assignees

  • VOLKSWAGEN AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20220920

Claims (9)

  1. Method (100) for distributing electrical energy to reduce excess electrical energy from a public electricity grid in a controlled manner, the method (100) comprising: - Providing (101) a quantity of electrical energy by means of a number of renewable power plants (205), - Issuing (103) an activation request to respective consumers (203) if the quantity of electrical energy provided is greater than a predetermined threshold, - Providing (105) electrical energy from the quantity of electrical energy to consumers (203) who have agreed to the activation request.
  2. Method (100) according to one of the preceding claims, characterized in that the activation request is transmitted directly to the respective consumers (203) of the number of consumers (203) in order to switch the respective consumers (203) into an activated state.
  3. Procedure (100) according to Claim 1 , characterized in that the activation request is transmitted to a gateway (207) which is configured to switch the respective consumers (203) into an activated state.
  4. Method (100) according to one of the preceding claims, characterized in that respective consumers (203) of the number of consumers (203) are divided into groups depending on their electrical power, and respective groups are operated with electrical energy from the quantity of electrical energy in order of increasing electrical power priority.
  5. Procedure (100) according to Claim 4 , characterized in that the group with the highest priority includes vehicles with a traction battery.
  6. Distribution system (200) for distributing electrical energy provided by a number of renewable power plants, wherein the distribution system (200) comprises: - a computing unit (201) configured to perform a procedure (100) according to one of the Claims 1 until 5 to execute.
  7. Distribution system (200) according to Claim 6 , characterized in that the computing unit (201) is configured to transmit an activation request to the respective consumers (203) in the event that the quantity of electrical energy provided by the number of renewable power plants (205) is greater than a predetermined threshold, and to provide electrical energy from the quantity of electrical energy to consumers (203) from whom the computing unit (201) has received a notification of consent to the activation request.
  8. Distribution system (200) according to Claim 6 or 7 , characterized in that the distribution system (200) further comprises: - a gateway (207) which is configured, in accordance with a predefined set of criteria, to transmit a notification of acceptance of the activation request to the computing unit (201) in response to the receipt of the activation request and to operate the respective consumers (203) with electrical energy from the provided quantity of electrical energy or, in response to the receipt of the activation request, to transmit a notification of rejection of the activation request to the computing unit (201).
  9. Distribution system (200) according to Claim 8 , characterized in that the gateway (207) is an integral part of a respective consumer (203), or the gateway (207) comprises a communication interface for communication with a number of consumers (203).

Description

The presented invention relates to a method and a distribution system for distributing electrical energy according to the attached claims. The public electricity grid is repeatedly burdened and sometimes overloaded by large amounts of electrical energy from renewable or regenerative energy sources. This means that during periods of strong sunlight or strong winds, peak loads in the electricity grid must be reduced. It is known that such peak loads can be balanced by discharges (i.e., wasting electricity) or by reducing the output or shutting down a renewable energy power plant, which leads to significant financial losses and considerable effort in reducing the peak loads. For this purpose, a signal is provided by the grid operator, which is used to control the respective renewable energy power plants. Furthermore, it is known to temporarily store excess electrical energy in electricity storage systems. The DE 10 2018 104 016 A1 , the DE 20 2015 104 883 U1 , the DE 10 2018 206 214 A1 , the DE 10 2014' 207 077 A1 , the DE 10 2010 017 264 A1 and the DE 10 2016 123 424 ; A1 each describe generic methods for transmitting electrical energy. It is therefore an object of the present invention to overcome at least one of the disadvantages described above, at least partially. In particular, it is an object of the present invention to provide a means for the safe and automatic use of surplus electrical energy supplied by renewable power plants. The aforementioned problem is solved by the subject matter of the attached claims. Further features and details of the invention will become apparent from the dependent claims, the description, and the drawings. Thus, according to a first aspect of the presented invention, a method for distributing electrical energy is presented. The method comprises providing a quantity of electrical energy by means of a number of renewable energy power plants, issuing an activation request to the respective consumers if the provided quantity of electrical energy is greater than a predetermined threshold, and providing electrical energy from this quantity to consumers who have agreed to the activation request. In the context of the presented invention, an activation request is understood to be a communication that includes a release for the activation of an electrical energy supply for the operation of a consumer. An activation request can be transmitted to a respective consumer or a corresponding gateway according to a standardized protocol, enabling automated processing of the activation request or a corresponding response to the activation request. An activation request can, for example, include a quantity and price of available electrical energy. The price can then be automatically reduced to encourage consumers to use the surplus energy. The presented invention is based on the use of consumers to reduce excess electrical energy in a power grid. To this end, a state of excess electrical energy in the power grid is determined by comparing the amount of electrical energy supplied by a number of renewable power plants with a threshold value. If the supplied amount of electrical energy is greater than the predetermined threshold value, it is assumed that excess electrical energy is present in the power grid and must be reduced. In order to reduce excess electrical energy from the power grid in a controlled manner, an activation request is transmitted to the respective consumers according to the invention, so that consumers who are suitable or in a suitable situation are operated by the excess electrical energy. To assess whether a particular consumer is suitable, or in a suitable situation, to be powered by surplus electrical energy, a set of criteria can be provided, for example, by a user of the consumer. Such a set of criteria might include, for instance, the quantity and price of electrical energy that the consumer purchases. Furthermore, the criteria might include information about the time and/or operating mode of the consumer. Based on such a set of criteria, the existence of suitable [conditions/situations] can be automatically determined. Conditions for operating a consumer with excess electrical energy are checked and the consumer is automatically activated, if necessary, to discharge the excess energy directly from the power grid, i.e., without the use of an intermediate storage system, thereby relieving the power grid. It may also be provided that the activation request is transmitted directly to the respective consumers of the number of consumers in order to switch the respective consumers into an activated state. If a consumer device includes a communication interface, an activation request can be sent directly to the consumer, thus eliminating the need for an intermediate station in the form of a gateway. It may also be provided that the activation request is transmitted to a gateway that is configured to switch the respective consumers into an activated state. By means of a gat