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1. WO2020159929 - TECHNOLOGIES POUR DE TRANSFERT DE CHARGE PAR COMMUTATEUR DE TRANSFERT STATIQUE POUR SYSTÈMES D'ALIMENTATION SANS COUPURE DE RÉCEPTEUR

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WHAT IS CLAIMED IS:

1. A system comprising:

a plurality of uninterruptible power supplies (UPSs);

a catcher uninterruptible power supply (UPS); and

a plurality of static transfer switches (STSs), each static transfer switch of the plurality of STSs connected with an associated one of the plurality of UPSs and with the catcher UPS, each of the plurality of STSs comprising a control unit to:

monitor an available power of the catcher UPS;

determine, in response a power failure event of the associated UPS, (i) whether a real-time power supplied to a load connected to the STS exceeds the available power of the catcher UPS, and (ii) whether the STS has priority over each other STS of the plurality of STSs; and

transfer the load from the associated UPS to the catcher UPS in response to determining that (i) the real-time power supplied to the load does not exceed the available power of the catcher UPS, and (ii) the STS has priority over each other STS of the plurality of STSs.

2. The system of claim 1, wherein the control unit is further to receive a real-time power value from each other STS of the plurality of STSs, wherein the real-time power value represents a real-time power supplied by that STS to a connected load.

3. The system of claim 2, wherein to determine whether the STS has priority over each other STS of the plurality of STSs comprises to determine that the real-time power supplied to the load by the STS exceeds each of the real-time power values received from each other STS of the plurality of STSs.

4. The system of claim 2 or claim 3, wherein each of the plurality of STSs further comprises a communication link to connect with each other STS of the plurality of STSs.

5. The system of claim 4, wherein to receive the real-time power value from each other STS of the plurality of STSs comprises to:

poll, via the communication link, each other STS of the plurality of STSs for the respective real-time power value; and

build a table to store the real-time power value of each other STS of the plurality of STSs obtained in response to the poll.

6. The system of claim 4 or claim 5, wherein the control unit is further to broadcast, via the communication link, a real-time power value of the STS to each STS of the plurality of STSs.

7. The system of claim 6, wherein the control unit is further to:

determine a value representing the available power of the catcher UPS following the transfer of the load to the catcher UPS; and

broadcast the updated value to each STS of the plurality of STSs.

8. The system of any preceding claim, wherein to determine whether the STS has priority is based on a determination of whether the priority is defined in a configuration for the plurality of STSs.

9. The system any preceding claim, wherein each STS of the plurality of STSs further comprises a unit identifier.

10. The system of claim 9, wherein to determine whether the STS has priority over each other STS of the plurality of STSs comprises to determine whether the STS has priority over each other STS of the plurality of STSs based on, at least in part, the unit identifier of each STS of the plurality of STSs.

11. A method comprising:

monitoring, via a static transfer switch (STS) of a plurality of STSs, an available power of a catcher uninterruptible power supply (UPS), wherein each STS is connected with an associated one of a plurality of UPSs and with the catcher UPS;

determining, in response a power failure event of the associated UPS, (i) whether a real time power supplied to a load connected to the STS exceeds the available power of the catcher UPS, and (ii) whether the STS has priority over each other STS of the plurality of STSs; and transferring the load from the associated UPS to the catcher UPS in response to determining that (i) the real-time power supplied to the load does not exceed the available power of the catcher UPS, and (ii) the STS has priority over each other STS of the plurality of STSs.

12. The method of claim 11, further comprising receiving a real-time power value from each other STS of the plurality of STSs, wherein the real-time power value represents a real-time power supplied by that STS to a connected load.

13. The method of claim 12, wherein determining whether the STS has priority over each other STS of the plurality of STSs comprises determining that the real-time power supplied to the load by the STS exceeds each of the real-time power values received from each other STS of the plurality of STSs.

14. The method of claim 12 or claim 13, wherein each of the plurality of STSs further comprises a communication link to connect with each other STS of the plurality of STSs.

15. The method of claim 14, wherein receiving the real-time power value from each other STS of the plurality of STSs comprises:

polling, via the communication link, each other STS of the plurality of STSs for the respective real-time power value; and

building a table to store the real-time power value of each other STS of the plurality of STSs obtained in response to the poll.

16. The method of claim 14 or claim 15, further comprising broadcasting, via the communication link, a real-time power value of the STS to each STS of the plurality of STSs.

17. The method of claim 16, further comprising:

determining a value representing the available power of the catcher UPS following the transfer of the load to the catcher UPS; and

broadcasting the updated value to each STS of the plurality of STSs.

18. The method of any one of claims 11-17, wherein to determine whether the STS has priority is based on determining whether the priority is defined in a configuration for the plurality of STSs.

19. The method of any one of claims 11-17, wherein each STS of the plurality of STSs further comprises a unit identifier.

20. The method of claim 19, wherein determining whether the STS has priority over each other STS of the plurality of STSs comprises determining whether the STS has priority over each other STS of the plurality of STSs based on, at least in part, the unit identifier of each STS of the plurality of STSs.

21. A system comprising:

circuitry in a static transfer switch (STS) of a plurality of STSs for monitoring an available power of a catcher uninterruptible power supply (UPS), wherein each STS is connected with an associated one of a plurality of UPSs and with the catcher UPS;

means for determining, in response a power failure event of the associated UPS, (i) whether a real-time power supplied to a load connected to the STS exceeds the available power of the catcher UPS, and (ii) whether the STS has priority over each other STS of the plurality of STSs; and

means for transferring the load from the associated UPS to the catcher UPS in response to determining that (i) the real-time power supplied to the load does not exceed the available power of the catcher UPS, and (ii) the STS has priority over each other STS of the plurality of STSs.

22. The system of claim 21, further comprising circuitry for receiving a real-time power value from each other STS of the plurality of STSs, wherein the real-time power value represents a real-time power supplied by that STS to a connected load.

23. The system of claim 22, wherein the means for determining whether the STS has priority over each other STS of the plurality of STSs comprises circuitry for determining that the real-time power supplied to the load by the STS exceeds each of the real-time power values received from each other STS of the plurality of STSs.

24. The system of claim 22 or claim 23, wherein each of the plurality of STSs further comprises a communication link to connect with each other STS of the plurality of STSs.

25. The system of claim 24, wherein the circuitry for receiving the real-time power value from each other STS of the plurality of STSs comprises:

circuitry for polling, via the communication link, each other STS of the plurality of STSs for the respective real-time power value; and

circuitry for building a table to store the real-time power value of each other STS of the plurality of STSs obtained in response to the poll.

26. The system of claim 24 or claim 25, further comprising circuitry for broadcasting, via the communication link, a real-time power value of the STS to each STS of the plurality of STSs.

27. The system of claim 26, further comprising:

circuitry for determining a value representing the available power of the catcher UPS following the transfer of the load to the catcher UPS; and

circuitry for broadcasting the updated value to each STS of the plurality of STSs.

28. The system of any one of claims 21-27, wherein the means for determining whether the STS has priority is based on determining whether the priority is defined in a configuration for the plurality of STSs.

29. The system of any one of claims 21-27, wherein each STS of the plurality of STSs further comprises a unit identifier.

30. The system of claim 29, wherein the means for determining whether the STS has priority over each other STS of the plurality of STSs comprises circuitry for determining whether the STS has priority over each other STS of the plurality of STSs based on, at least in part, the unit identifier of each STS of the plurality of STSs.

31. One or more machine-readable storage media storing a plurality of instructions, that, when executed on a processor, cause the processor to perform the method of any one of claims 11-20.