ACTIVE POWER TRANSFER SWITCH CONTROL TO REDUCE SERVICE IMPACTS DUE TO ELECTRICAL POWER INTERRUPTIONS

摘要

To prevent overloading of a shared secondary power feed, active transfer switches are controlled to switch discrete hardware from the shared secondary to a corresponding primary power feed, even if such a primary is currently nonoperational thereby resulting in deactivation of such hardware. A threshold amount of power draw from the shared secondary is established, such as to ensure that failure of a single primary can be accommodated, and active transfer switches are controlled so as to prevent such a threshold from being exceeded. Alternatively, or in addition, active transfer switches are controlled such that they, in the event of an interruption in the power being provided by the primary power feed, either switch to the shared secondary or, in accordance with the aforementioned control, do not switch despite the interruption in power.

主权项

1. A method of controlling active transfer switches in a datacenter to reduce impact on the provision of services by the datacenter, from electrical power interruptions in the datacenter, the method comprising:
obtaining an amount of power being consumed by datacenter hardware from a shared secondary power feed; determining that the shared secondary power feed will be incapable of providing sufficient power to the datacenter hardware if a first primary power feed fails; and generating, in response to the determining, instructions to a first selected set of active transfer switches that switch between a primary power feed and the shared secondary power feed, the instructions instructing the first selected set of active transfer switches to either:
switch back to the primary power feed to which they are connected even if that primary power feed is currently nonoperational; orto not switch to the shared secondary power feed if the primary power feed to which they are connected fails.