Commercial power restore indicator for sites, such as cellular telecommunications sites

Patent metadata

Field	Value
Publication number	US-9749882-B2
Application number	US-201514966964-A
Country	US
Kind code	B2
Filing date	Dec 11, 2015
Priority date	Dec 11, 2015
Publication date	Aug 29, 2017
Grant date	Aug 29, 2017

Abstract

Systems and methods are described herein for determining the restoration of power at a site, such as the restoration of commercial power to a cell site within a telecommunications network. The systems and methods may be utilized to determine whether power is restored at a cell site when a generator is currently or temporarily providing power to the cell site (e.g., during a power outage on a utility grid that provided the power to the cell site), such as by determining the presence of a generator is running alarm message and the absence of a commercial power failure message, among other messages.

First claim

What is claimed is:

1. A system for determining whether electrical power has been restored to a wireless telecommunications site, wherein the wireless telecommunications site receives power from a commercial utility, and wherein the wireless telecommunications site includes a backup power generator, the system comprising:
a first relay, connected to a power protection cabinet of the wireless telecommunications site,
wherein the first relay is configured to send a first signal representing a lost power state of the wireless telecommunications site, and
wherein the power protection cabinet includes power transfer devices configured to electrically protect the wireless telecommunications site;

a second relay, connected to the power protection cabinet, wherein the second relay is configured to send a second signal representing a generator supplied power state of the wireless telecommunications site,
wherein the second signal is based on the backup generator providing power to the wireless telecommunications site during an outage of power from the commercial utility to the wireless telecommunications site; and

a processor or microcontroller programmed to determine that power is again available from the commercial utility at the wireless telecommunications site after the lost power state,
wherein the processor or microcontroller determines that power is again available from the commercial utility upon first detecting an alarm associated with the second signal and then detecting a clearing of an alarm associated with the first signal.

2. The system of claim 1 , wherein the first signal represents a commercial power fail alarm that indicates the lost power state of the wireless telecommunications site; and
wherein the second signal represents a site running on generator alarm that indicates the wireless telecommunications site is running on power provided by a generator during the generator supplied power state of the wireless telecommunications site.

3. The system of claim 1 , wherein the first relay is a first RIB relay that couples a commercial power feed component of the power protection cabinet to an over voltage protection component of the power protection cabinet; and
wherein the second relay is a second RIB relay that couples a generator power feed component of the power protection cabinet to the over voltage protection component of the power protection cabinet.

4. The system of claim 1 , wherein the wireless telecommunications site is a small cell site of a telecommunications network.

5. The system of claim 1 , wherein the wireless telecommunications site is a cell site of a telecommunications network; and
wherein the processor or microcontroller automatically sends a restoration message to a network operations control center of the telecommunications network upon determining power is available from the commercial utility at the site.

6. The system of claim 1 , wherein the wireless telecommunications site is a cell site of a cellular telecommunications network; and
wherein the processor or microcontroller automatically sends a restoration message to an emergency operations center of the telecommunications network upon determining power is available from the commercial utility at the wireless telecommunications site.

7. The system of claim 1 , wherein the processor or microcontroller automatically causes the generator providing power to the wireless telecommunications site to end a current operation of providing power to the wireless telecommunications site during the generator supplied power state of the wireless telecommunications site.

8. A method for determining power has been restored at a cell site that receives power from a commercial utility and that includes a backup generator, the method comprising: receiving a first alarm message from an alarm component at a power protection cabinet of the cell site that indicates an outage of power at the cell site, wherein the first alarm message is based on a first relay connected to the power protection cabinet of the cell site that sends a first signal representing a lost power state of the cell site; and wherein the power protection cabinet receives power from the commercial utility and the generator and distributes received power to the cell site; receiving a second alarm message from the alarm component that indicates a generator is providing power to the cell site, wherein the second alarm message is based on a second relay connected to the power protection cabinet that sends a second signal representing a generator powered state of the cell site that is based on the generator providing power to the cell site during the outage of power from the commercial utility to the cell site; and determining power has been restored at the cell site based on a status of the second alarm message that indicates the generator is providing power to the cell site combined with a status of the first alarm message that indicates the outage of power at the cell site has cleared.

9. The method of claim 8 , wherein the first alarm message is a commercial power fail alarm that indicates a lost power state of the cell site; and
wherein the second alarm message is a site running on generator alarm that indicates the cell site is running on power provided by the generator during a generator powered state of the cell site.

10. The method of claim 8 , wherein the first alarm message is based on a first signal generated by a first RIB relay that couples a commercial power feed component of the power protection cabinet to an over voltage protection component of the power protection cabinet; and
wherein the second alarm message is based on a second signal generated by a second RIB relay that couples a generator power feed component of the power protection cabinet to the over voltage protection component of the power protection cabinet.

11. The method of claim 8 , wherein the cell site is a cell site of a telecommunications network, the method further comprising:
automatically sending a restoration message to a network operations control center of the telecommunications network upon determining power has been restored at the site.

12. The method of claim 8 , wherein the cell site is a cell site of a telecommunications network, the method further comprising:
automatically sending a restoration message to an emergency operations center of the telecommunications network upon determining power has been restored at the site.

13. An apparatus for monitoring power provided to a telecommunications cell site, the apparatus comprising:
a utility monitoring component that monitors whether a utility connected to the telecommunications cell site is providing power to the telecommunications cell site;
a generator monitoring component that monitors whether a generator connected to the telecommunications cell site is providing power to the telecommunications cell site: and
an alarm component that determines whether the utility is providing power to the telecommunications cell site after an outage at the telecommunications cell site when the utility monitoring component and generator monitoring component both indicate power is being provided to the telecommunications cell site, by:
receiving a first signal indicating an outage of power at the telecommunications cell site from the utility monitoring component;
receiving a second signal indicating the generator connected to the telecommunications cell site is providing power to the telecommunications cell site from the generator monitoring component; and
receiving an indication of a clearance of the first signal that indicated the outage of power at the telecommunications cell site.

Assignees

• T-Mobile U S A Inc
• T Mobile Usa Inc

Inventors

• Pelletier Gregory

Classifications

• H04L41/0668

  by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure · CPC title

• H04L41/06

  Management of faults, events, alarms or notifications · CPC title

• G01R19/145

  Indicating the presence of current or voltage · CPC title

• G08B21/185

  Electrical failure alarms · CPC title

• H04W24/04 Primary

  Arrangements for maintaining operational condition · CPC title