Control distribution transformer and method of making same

• US 9,263,182 B2
• Filed: 12/21/2012
• Issued: 02/16/2016
• Est. Priority Date: 03/31/2010
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: King, Robert Dean
• Primary Examiner(s): Jarrett, Ryan
• Application Number:
  US13/723,726
• Publication Number:
  US 20130141074A1
• Time in Patent Office: 1,152 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: G01S 19/071 DGPS corrections
• CPC Class Codes: G01S 19/14 specially adapted for specific applications
• CPC Class Codes: G01S 5/0009 Transmission of position information to remote stations involving assistance data G01S5/0236
• CPC Class Codes: G01S 5/009 Transmission of differential positioning data to mobile
• CPC Class Codes: H01F 38/00 Adaptations of transformers or inductances for specific applications or functions
• CPC Class Codes: H02J 13/00004 characterised by the power network being locally controlled
• CPC Class Codes: H02J 13/00007 using the power network as support for the transmission
• CPC Class Codes: H02J 2310/14 The load or loads being home appliances
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y04S 10/126 the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

A distribution transformer comprises a sensor system and a communications module. The distribution transformer is configured to convert a first high voltage electricity from a high voltage distribution line to a first low voltage electricity and convey the first low voltage electricity along a low voltage line to an electrical device. The sensor system is configured to determine a temperature of the distribution transformer, and the communications module is configured to transmit a load reduction request along the low voltage line to the electrical device based on the temperature of the distribution transformer.

Claims

1. A system comprising:

a distribution transformer comprising a communications module and a sensor system, the distribution transformer configured to;

convert a first high voltage electricity from a high voltage distribution line to a first low voltage electricity;

convey the first low voltage electricity along a low voltage line to an electrical device;

wherein the sensor system comprises a temperature sensor configured to determine a temperature of the distribution transformer;

wherein the sensor system comprises a temperature sensor configured to determine a temperature of an ambient environment surrounding the distribution transformer; and

wherein the communications module is configured to transmit a load reduction request along the low voltage line to the electrical device based on the temperature of the distribution transformer and based on the temperature of the ambient environment, with the communications module transmitting the load reduction request if the temperature of the ambient environment is above a first temperature threshold and if a difference between the temperature of the distribution transformer and the temperature of the ambient environment is above a second temperature threshold.

2. The system of claim 1 wherein the distribution transformer further comprises a cooling system having a coolant therein;

and

wherein the sensor system is configured to determine the temperature of the coolant.

3. The system of claim 1 wherein the communications module, in being configured to transmit the load reduction request, is configured to transmit the load reduction request if the determined temperature of the distribution transformer is above a temperature threshold.

4. The system of claim 1 wherein the communications module, in being configured to transmit the load reduction request, is configured to transmit the load reduction request if the determined temperature of the distribution transformer has approached a temperature threshold.

5. The system of claim 1 wherein the distribution transformer is further configured to perform a handshake algorithm with the electrical device to establish a communication therewith.

6. The system of claim 5 wherein the distribution transformer is further configured to receive an expected electrical load power from the electrical device indicating a projected power draw from the distribution transformer to the electrical device.

7. The system of claim 1 wherein the communications module is further configured to rescind the load reduction request if the temperature of the distribution transformer is below a temperature threshold.

8. The system of claim 7 wherein the distribution transformer is further configured to disable supplying power to the electrical device if the electrical device is unable to comply with the load reduction request.

9. The system of claim 8 wherein the distribution transformer is further configured to issue a fault notification to a monitoring authority.

10. A method of manufacturing an electrical system comprising:

assembling a distribution transformer capable of stepping down high voltage electricity from a high voltage distribution line and conveying stepped down electricity along a low voltage line to power an electrical device, wherein the high voltage distribution line is configured to transfer a higher voltage electricity than the low voltage line;

configuring a sensor system to determine a temperature of the distribution transformer and a temperature of an ambient environment of the distribution transformer;

generating a load reduction request to reduce a load drawn from the distribution transformer by the electrical device based on the temperature of the distribution transformer and based on the temperature of the ambient environment; and

coupling a communications module to the distribution transformer and to the low voltage line, the communications module configured to convey the load reduction request along the low voltage line to the electrical device;

wherein generating the load reduction request further comprises generating the load reduction request if the temperature of the ambient environment is above a first temperature threshold and if a difference between the temperature of a cooling system of the distribution transformer and the temperature of the ambient environment is above a second temperature threshold.

11. The method of claim 10 wherein configuring the sensor system comprises configuring the sensor system to determine a temperature of the cooling system of the distribution transformer.

12. The method of claim 10 further comprising generating a rescind request to rescind the load reduction request if the temperature of the distribution transformer is below a temperature threshold.

13. The method of claim 10 further comprising disabling a supply of power to the electrical device if the electrical device is unable to comply with the load reduction request.

14. An apparatus comprising:

a distribution transformer configured to;

step down electricity received from a high voltage distribution power line; and

provide the stepped down electricity to an electrical device via a low voltage power line;

a temperature sensor system comprising;

a transformer temperature sensor configured to determine an internal temperature of the distribution transformer; and

an ambient temperature sensor configured to determine a temperature of an ambient environment surrounding the distribution transformer; and

a communications system coupled to the distribution transformer and configured to transmit a request along the low voltage line to the electrical device, wherein the request is a request to reduce a load on the distribution transformer based on the internal temperature of the distribution transformer and the temperature of the ambient environment surrounding the distribution transformer;

wherein the communications system transmits the request to the electrical device if the temperature of the ambient environment is above a first temperature threshold and below a second temperature threshold, and if a difference between the temperature of the distribution transformer and the temperature of the ambient environment is above a third temperature threshold.

15. The apparatus of claim 14 wherein the distribution transformer comprises a cooling system having a coolant therein configured to cool the distribution transformer, wherein the temperature sensor system is configured to determine a temperature of the coolant.

16. The apparatus of claim 14 wherein the distribution transformer is programmed to generate the request if the temperature of the distribution transformer exceeds the first temperature threshold.

17. The apparatus of claim 16 wherein the distribution transformer is programmed to rescind the request if the temperature of the distribution transformer is below the first temperature threshold.

18. The apparatus of claim 16 wherein the distribution transformer is programmed to disable supplying power to the electrical device if the temperature of the distribution transformer exceeds the second temperature threshold, the second temperature threshold greater than the first temperature threshold.