Method of identifying when to initiate control sequences

Patent metadata

Field	Value
Publication number	US-11689009-B2
Application number	US-202217702266-A
Country	US
Kind code	B2
Filing date	Mar 23, 2022
Priority date	Jun 10, 2016
Publication date	Jun 27, 2023
Grant date	Jun 27, 2023

Abstract

A method and system are provided for transferring a load between a primary power source and a secondary power source. In accordance with the disclosure, a controller senses, via a sensor, an electrical signal providing power from the primary power source to the load. The controller also detects a non-conforming power event by determining that a parameter of the electrical signal is either more or less than a first threshold value. Responsive to the detection of the non-conforming power event, the controller determines a quantity of non-conforming power events that occur during a first time interval. The controller further can compares the determined quantity of non-conforming power events to a second threshold value. Responsive to the determined quantity of non-conforming power events being either greater or lesser than the second threshold value, the controller initiates a control signal, such as a control signal to initiate a load transfer.

First claim

The invention claimed is:

1. A method for initiating a transfer of a load between a primary power source and a secondary power source, the method comprising:
detecting a non-conforming power event by determining that a parameter of an electrical signal providing power from the primary power source to the load is one of less than or greater than a first threshold value;
comparing a determined quantity of non-conforming power events that occur during a first time interval to a second threshold value; and
responsive to the determined quantity of non-conforming power events being greater than the second threshold value, generating a control signal.

2. The method of claim 1 further comprising initiating a transfer of the load.

3. The method of claim 1 further comprising transferring the load from the primary power source to the secondary power source.

4. The method of claim 1 further comprising:
responsive to detecting the non-conforming power event, waiting a second time interval; and
after waiting the second time interval, determining that the parameter of the electrical signal is less than the first threshold value.

5. The method of claim 4 , further comprising:
responsive to determining that the parameter of the electrical signal is less than the first threshold value after waiting the second time interval,
transferring the load from the primary power source to the secondary power source.

6. The method of claim 1 , wherein the parameter is a voltage of the electrical signal.

7. The method of claim 1 wherein the first threshold value comprises a predetermined value.

8. The method of claim 1 wherein the first time interval comprises a predetermined time interval.

9. The method of claim 1 wherein the first threshold value comprises an adjustable value.

10. The method of claim 1 wherein the first time interval comprises an adjustable time interval.

11. An apparatus for initiating a transfer of a load between a primary power source and a secondary power source, comprising:
a processor; and
a memory including computer program code which, when executed by the processor, causes the apparatus to:
detect a non-conforming power event by determining that a parameter of an electrical signal providing power from the primary power source to the load is one of less than or greater than a first threshold value;
compare a determined quantity of non-conforming power events that occur during a first time interval to a second threshold value; and
responsive to the determined quantity of non-conforming power events being greater than the second threshold value, generate a control signal.

12. The apparatus of claim 11 , wherein the memory includes program code, which when executed by the processor causes the apparatus to initiate a transfer of the load.

13. The apparatus of claim 11 , wherein the memory includes program code, which when executed by the processor causes the apparatus to transfer the load from the primary power source to the secondary power source.

14. The apparatus of claim 11 , wherein the memory includes program code, which when executed by the processor causes the apparatus to:
responsive to detecting the non-conforming power event, wait a second time interval; and
after waiting the second time interval, determine that the parameter of the electrical signal is less than the first threshold value.

15. The apparatus of claim 14 , wherein the memory includes program code, which when executed by the processor causes the apparatus to:
responsive to determining that the parameter of the electrical signal is less than the first threshold value after waiting the second time interval,
transfer the load from the primary power source to the secondary power source.

16. The apparatus of claim 11 , wherein the parameter is a voltage of the electrical signal.

17. The apparatus of claim 11 wherein the first threshold value comprises a predetermined value.

18. The apparatus of claim 11 wherein the first threshold value comprises an adjustable value.

19. The apparatus of claim 11 wherein the first time interval comprises one of a predetermined time interval or an adjustable time interval.

20. A computer program product comprising a non-transitory computer readable medium having computer readable code stored thereon, which when executed by a processor, causes an apparatus to perform:
detecting a non-conforming power event by determining that a parameter of an electrical signal providing power from the primary power source to the load is one of less than or greater than a first threshold value;
comparing a determined quantity of non-conforming power events that occur during a first time interval to a second threshold value; and
responsive to the determined quantity of non-conforming power events being greater than the second threshold value, generating a control signal.

Assignees

• Asco Power Technologies Lp

Inventors

• Bonachea Victor E

Classifications

• H02J9/06

  with automatic change-over {, e.g. UPS systems} · CPC title

• H02J3/08

  Synchronisation of networks · CPC title

• H02J3/0012

  characterised by the contingency detection means in AC networks, e.g. using phasor measurement units [PMU], synchrophasors or contingency analysis · CPC title

• H02J3/42

  with automatic parallel connection when synchronisation is achieved · CPC title

• H02H3/08 Primary

  responsive to excess current (responsive to abnormal temperature caused by excess current H02H5/04) · CPC title