Current sensing lug

• US 20060106554A1
• Filed: 10/31/2005
• Published: 05/18/2006
• Est. Priority Date: 11/01/2004
• Status: Abandoned Application

• Current Assignee: Centerpoint Energy Incorporated
• Original Assignee: Centerpoint Energy Incorporated
• Inventors: Cortez, Donato, Borkowski, Timothy J., Murphy, R. Kenneth, Grasshoff, Richard L.
• Application Number:
  US11/262,703
• Publication Number:
  US 20060106554A1
• Time in Patent Office: Days
• US Class Current: 702/64
• CPC Class Codes: G01D 4/002 Remote reading of utility meters
• CPC Class Codes: G01R 1/203 Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R
• CPC Class Codes: G01R 15/18 using inductive devices, e.g. transformers
• CPC Class Codes: G01R 15/205 using magneto-resistance devices, e.g. field plates
• CPC Class Codes: G01R 21/133 by using digital technique
• CPC Class Codes: G01R 22/00 Arrangements for measuring time integral of electric power or current, e.g. electricity meters
• CPC Class Codes: G01R 22/065 related to mechanical aspects
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

Electrical current in an electrical power distribution system, such as at a power distribution transformer or the like, for an electrical utility is transferred through a current sensing connector lug mounted with an end of a user or consumer'"'"'s service connection conductor or line. The lug is connectable to the power distribution transformer or secondary conductor, for connecting the user'"'"'s service conductor to power from the distribution system. The flow of electrical current and thus the amount of electric power provided to an individual user is measured at the current sensing lug rather than at the user'"'"'s site or facility, removing the need for watt-hour meters at the user or customer site, and also thus removing the requirement for conventional meter reading crews or for automated meter reading equipment. The current sensing lug also facilitates the accumulation of other utility data information, which formerly required a site visit by utility personnel.

Claims

1. A current sensing lug connecting electrical power service from a power distribution system to a customer site and measuring energy usage by the customer site, comprising:

a connector terminal adapted to be connected to the power distribution system;

a connector barrel adapted to be connected to a service conductor in connection with the customer site;

a lug body mounted between the connector terminal and the connector barrel and permitting the flow of electrical power to the service conductor; and

an electrical current sensor obtaining data indicating the amount of power provided from the connector terminal to the service conductor.

2. The current sensing lug of claim 1, further including:

a cover enclosing the connection between the service conductor and the current sensing lug.

3. The current sensing lug of claim 2, wherein the cover comprises an insulating boot.

4. The current sensing lug of claim 1, wherein:

the electrical current sensor is mounted about the lug body.

5. The current sensing lug of claim 1, wherein the electrical power service is by underground distribution through a secondary distribution transformer connected to the connector terminal.

6. The current sensing lug of claim 1, where in the electrical power service is by overhead distribution through a secondary distribution transformer connected to the connector terminal.

7. The current sensing lug of claim 1, wherein the current sensor comprises a current flow sensor measuring the flow of electrical current to the service conductor.

8. The current sensing lug of claim 7, wherein the current flow sensor comprises a Hall effect current sensor.

9. The current sensing lug of claim 7, wherein the current flow sensor comprises a current transformer.

10. The current sensing lug of claim 1, further including a signal transfer means for providing data from the current sensor for processing.

11. The current sensing lug of claim 10, wherein the signal transfer means comprises a wireless signal transfer means.

12. The current sensing lug of claim 10, wherein the signal transfer means comprises a wired signal transfer means.

13. The current sensing lug of claim 1, wherein the connector terminal is connected to receive electrical power from a secondary voltage line of a power distribution system.

14. The current sensing lug of claim 1, wherein the connector terminal is connected to a power distribution transformer.

15. The current sensing lug of claim 1, wherein the power distribution transformer is connected to an underground residential power distribution system.

16. The current sensing lug of claim 1, wherein the power distribution transformer is connected to an overhead distribution system.

17. The current sensing lug of claim 1, wherein the connector terminal is connected to receive electrical power from a step transformer.

18. The current sensing lug of claim 1, wherein a service conductor is connected between the connector barrel end portions and a customer site.