METHOD AND DEVICE FOR THE DIRECTIONAL TRANSMISSION OF ELECTRICAL ENERGY IN AN ELECTRICITY GRID

• US 20120059532A1
• Filed: 05/05/2010
• Published: 03/08/2012
• Est. Priority Date: 05/15/2009
• Status: Active Grant

• Current Assignee: GIP AG
• Original Assignee: GIP AG
• Inventors: Reifenhäuser, Bernd, Ebbes, Alexander
• Granted Patent: US 9,337,655 B2
• Time in Patent Office: Days
• US Class Current: 700/297
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00006 characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
• CPC Class Codes: H02J 2300/20 The dispersed energy generation being of renewable origin
• CPC Class Codes: H02J 2310/12 The local stationary network supplying a household or a building
• CPC Class Codes: H02J 2310/58 The condition being electrical
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 3/0075 for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y04S 10/123 the energy generation units being or involving renewable energy sources
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving

Abstract

A method for the directional transmission of electrical energy in an electricity grid and to a method for transmitting electrical energy via an electricity grid having at least at least one generator for electrical energy, at least one network node and at least one consumer. A method and a system are provided for transmitting electrical energy, which method and system are highly flexible and make it possible to design the energy distribution in a grid dynamically so as to deal with even short-term fluctuations both on the supply side and on the demand side. A method for the directional transmission of electrical energy in an electricity grid is included, which method comprises the following steps: receiving a data packet, receiving an energy packet associated with the data packet, determining a receiver from the information contained in the data packet, transmitting the data packet to the previously determined receiver and transmitting the energy packet, which is defined by the voltage U(t), the electric current I(t) and the duration T of the packet, associated with the data packet to the same previously determined receiver.

Claims

1. A method for the directional transmission of electrical energy in an electricity grid, comprising the following steps:

receiving a data packet;

receiving an energy packet associated with the data packet;

determining a receiver from the information contained in the data packet;

transmitting the data packet to the previously determined receiver; and

transmitting the energy packet, which is defined by the voltage U(t), the electric current I(t) and the duration T of the packet, associated with the data packet to the same previously determined receiver.

2. The method according to claim 1, wherein the data packet and the energy packet are transmitted via the same electrical line.

3. The method according to claim 1, wherein the data packet is transmitted via a data network and the energy packet is transmitted via a grid, the data network and the grid being physically separate from one another.

4. The method according to claim 3, wherein the grid and the data network together form a logical network which comprises a transport plane and a signalling and control plane (SCP).

5. The method according to claim 1, wherein the data packet comprises a unique addressing of a generator of the energy packet.

6. The method according to claim 1, wherein the data packet comprises a unique target addressing for the energy packet.

7. The method according to claim 1, wherein the directional transmission occurs autonomously or in a self-organising manner, or both.

8. The method according to claim 1, and further comprising determining the duration T of the energy packet to be transmitted, the duration T of the energy packet preferably being an integral multiple of the duration dt of a basic energy frame.

9. The method according to claim 1, and further comprising:

determining a power profile TP(t) for the energy packet to be transmitted, the power profile TP(t) determining which power is to be maximally transmitted for the energy packet at a moment in time t; and

transmitting the energy packet with the determined power profile TP(t).

10. The method according to claim 9, and further comprising:

selecting a line for the transmission of the energy packet with the aid of the information contained in the data packet;

disconnecting the selected line with the aid of a controllable switch; and

controlling the power transmitted at a moment in time t, with the aid of the controllable switch, on the basis of the power profile TP(t) of the energy packet to be transmitted.

11. The method according to claim 1, and further comprising:

combining a plurality of received energy packets to form an energy packet to be transmitted, each of the received energy packets comprising a power profile P(t) which determines which maximum power the energy packet provides at a moment in time; and

during this combining process, the power profiles P(t) of the received energy packets being added to a power profile TP(t) of the energy packet to be transmitted, and transmitting to the receiver the target addresses and the power profiles P(t) of the received energy packets in a data packet associated with the energy packet to be transmitted.

12. The method according to claim 1, and further comprising:

breaking down a received energy packet into a plurality of energy packets to be transmitted, the data packet associated with the received energy packet containing information regarding the target addresses and the power profiles of the energy packets to be transmitted;

transmitting each of the energy packets to be transmitted with the power profiles associated therewith to a respective receiver; and

transmitting the data packets, associated with the energy packets to be transmitted, to the same receivers as the energy packets.

13. A method for transmitting electrical energy via an electricity grid comprising at least one generator for electrical energy, at least one network node and at least one consumer, wherein the electrical energy is transmitted in the form of at least one energy packet from the generator, via the network node to the consumer, wherein a data packet is associated with the energy packet and is transmitted with the energy packet, and wherein the energy packet is routed from the generator to the consumer via the network node by the method according to claim 1.

14. The method according to claim 13, wherein the data packet and the energy packet are transmitted in such a way that when arriving at a network node the data packet arrives before the energy packet.

15. The method according to claim 13, wherein a data packet is transmitted from a consumer to a network node to a generator.

16. The method according to claim 1, wherein the method comprises a store management for an energy store associated with a consumer, the store management defining at least one level mark of the energy store and then transmitting a request for energy or an offer for energy to the network when the level of the store exceeds or falls below the level mark.

17. The method according to claim 1, wherein the method comprises a power limit which defines the power which can be drawn by a consumer from the network.

18. A computer program comprising a program code for carrying out a method according to claim 1.

19. A machine-readable data carrier comprising a computer program stored thereon according to claim 18.

20. A computer system on which a computer program according to claim 18 is loaded.

21. A network node for the directional transmission of electrical energy in an electricity grid, the network node comprising:

a receiving device for receiving a data packet;

a receiving device for receiving an energy packet associated with the data packet;

a device for determining a receiver from the information contained in the data packet;

a device for transmitting the data packet to the previously determined receiver, wherein the device for transmitting the data packet is connected to the device for determining the receiver; and

a device for transmitting the energy packet associated with the data packet, which energy packet is defined by the voltage U(t), the electric current I(t) and the duration T of the packet;

wherein the device for transmitting the energy packet is connected to the device for determining the receiver; and

wherein

the network node is configured to transmit the data packet and the energy packet to the same receiver during operation.

22. The network node according to claim 21, wherein the device for transmitting the energy packet comprises at least one controllable switch which is connected to the device for transmitting the data packet in such a way that it can be controlled thereby.

23. The network node according to claim 21, wherein the network node is connected to a first physical network for transmission of the energy packet, and to a second physical network for transmission of the data packet.

24. The network node according to claim 21, wherein the network node comprises a transport plane and a signalling and control plane (SCP).

25. An electricity grid comprising:

at least one generator for electrical energy;

at least one network node; and

at least one consumer;

wherein the generator, the network node and the consumer are designed and interconnected in such a way that, during operation, electrical energy can be transmitted in the form of at least one energy packet having a predetermined amount of energy from the generator, via the network node to the consumer;

wherein the generator, the network node and the consumer are designed and interconnected in such a way that, during operation, a data packet associated with the energy packet can be transmitted from the generator, via the network node to the consumer; and

wherein the network node is a network node according to any claim 35 for the directional transmission of the energy packet with use of the data packet.

26. The electricity grid according to claim 25, wherein a network node forms a virtual power plant, wherein this network node is connected to a plurality of generators and appears to the consumers as a single generator.

27. The electricity grid according to claim 25, wherein the generator, the network node, or the consumer selectively or combinatorily comprise a store for electricity.