METHOD AND APPARATUS FOR ADAPTING AT LEAST ONE SET OF PARAMETERS OF AN INTELLIGENT ELECTRONIC DEVICE

• US 20110282507A1
• Filed: 06/02/2011
• Published: 11/17/2011
• Est. Priority Date: 12/03/2008
• Status: Abandoned Application

• Current Assignee: ABB Research Ltd. (ABB Limited)
• Original Assignee: ABB Research Ltd. (ABB Limited)
• Inventors: ZHANG, Yan, FREI, Christian, KOCH, Thomas, OUDALOV, Alexandre, GOERLITZ, Otmar
• Application Number:
  US13/151,979
• Publication Number:
  US 20110282507A1
• Time in Patent Office: Days
• US Class Current: 700/292
• CPC Class Codes: H02H 3/006 Calibration or setting of parameters
• CPC Class Codes: H04B 2203/5458 Monitor sensor; Alarm systems
• CPC Class Codes: H04B 2203/5495 having measurements and testing channel
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines

Abstract

The disclosure concerns a method and an apparatus for adapting at least one set of parameters to at least one Intelligent Electronic Device (IED) of an electrical power network having a plurality of switching devices (CB). The method includes: a) reading the current network status of the electrical power network, wherein the network status includes the status of the plurality of switching devices; b) simulating at least one network fault in the electrical power network; c) deducing at least one new set of parameters for the at least one IED using a simulated fault current induced by the at least one simulated network fault under consideration of the present network status and the network topology of the electrical power network; and d) setting the at least one set of parameters in at least one of the at least one IED. The apparatus a) reads the current network status of the electrical power network, b) selects the at least one set of parameters for the at least one Intelligent Electronic Device out of a plurality of sets of parameters depending of the current network status; and c) sets the at least one set of parameters in the at least one IED.

Claims

1. A method for adapting at least one set of parameters of at least one Intelligent Electronic Device (IED) of an electrical power network having a plurality of switching devices (CB), the method comprising:

a) reading a present network status of the electrical power network, the present network status including a present status of the plurality of switching devices;

b) deducing, in a processor of a computer processing device, at least one new set of parameter values for the at least one IED based on a simulated fault current induced by at least one simulated network fault under consideration of the present network status and a network topology of the electrical power network; and

c) applying the at least one new set of parameter values to the at least one set of parameters of the at least one IED.

2. The method according to claim 1, wherein in step b) the at least one new set of parameter values is deduced under consideration of forecast information within a predefined horizon.

3. The method according to claim 1, wherein in step b) the at least one new set of parameter values is selected, depending on the present network status, out of a plurality of sets of parameter values.

4. The method according to claim 3, wherein the plurality of sets of parameter values are created by permuting through a plurality of network statuses, and

wherein for each network status

i) at least one network fault is simulated in the electrical power network;

and

ii) at least one new set of parameter values for the at least one IED is deduced using a simulated fault current induced by the at least one simulated network fault under considerations of the network status and the network topology.

5. The method according to claim 4, wherein each network status is encoded into logic expressions such that the network status is represented by a vector comprising binary values.

6. The method according to claim 4, wherein steps i) and ii) are created by permuting through substantially all network statuses.

7. The method according to claim 4, comprising:

creating at least one of a table and a database including the network statuses and the set of parameter values corresponding to each network status in the at least one of the table and the database.

8. The method according to claim 1, wherein after step a), the method comprises:

a1) encoding an actual network status into logic expressions such that the network status is represented by a vector comprising binary values.

9. The method according to claim 1, wherein steps a), b), and c) are performed after an event.

10. The method according to claim 1, wherein the network status includes the position of all switches.

11. The method according to claim 1, wherein the network status includes at least one of the status of a distributed energy resource connected to the electrical power network and the status of a load connected to the electrical power network.

13. The method according to claim 4, wherein each network status is encoded into Boolean expressions such that the network status is represented by a vector comprising binary values.

14. The method according to claim 13, comprising:

creating at least one of a table and a database including the network statuses encoded in logic expressions, and the set of parameter values corresponding to each network status in the at least one of the table and the database.

15. The method according to claim 5, comprising:

creating at least one of a table and a database including the network statuses encoded in logic expressions, and the set of parameter values corresponding to each network status in the at least one of the table and the database.

16. The method according to claim 15, wherein after step a), the method comprises:

a1) encoding an actual network status into Boolean expressions such that the network status is represented by a vector comprising binary values.

17. The method according to claim 16, wherein the network status includes the position of all switches.

18. The method according to claim 5, wherein after step a), the method comprises:

a1) encoding an actual network status into Boolean expressions such that the network status is represented by a vector comprising binary values.

19. The method according to claim 7, wherein after step a), the method comprises:

a1) encoding an actual network status into Boolean expressions such that the network status is represented by a vector comprising binary values.

20. The method according to claim 1, wherein step a) is performed periodically.

21. The method according to claim 14, wherein the network status includes at least one of the status of a distributed energy resource connected to the electrical power network and the status of a load connected to the electrical power network.

22. The method according to claim 15, wherein the network status includes at least one of the status of a distributed energy resource connected to the electrical power network and the status of a load connected to the electrical power network.

12. An apparatus for adapting at least one set of parameters of at least one Intelligent Electronic Device (IED) of an electrical power network having a plurality of switching devices, the apparatus comprising:

a calculation unit configured to simulate at least one network fault in the electrical power network and to deduce at least one set of parameter values for the at least one IED based on a simulated fault current induced by the at least one simulated network fault under consideration of a network status and a network topology of the electrical power network; and

a determining unit configured to determine a present network status of the electrical power network, the network status including a status of the plurality of switching devices,

wherein the calculating unit is configured to deduce a new set of parameter values for the at least one IED depending on the present network status, and

wherein the apparatus is configured to provide the new set of parameter values to the at least one IED for updating the at least one set of parameters of the at least one IED.