WIRELESS CURRENT TRANSFORMER

• US 20090309754A1
• Filed: 06/16/2008
• Published: 12/17/2009
• Est. Priority Date: 06/16/2008
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Haas, Michael, Bou, Jimmy, Koepsell, James Michael
• Application Number:
  US12/139,885
• Publication Number:
  US 20090309754A1
• Time in Patent Office: Days
• US Class Current: 340/870.20
• CPC Class Codes: G01R 15/18 using inductive devices, e.g. transformers
• CPC Class Codes: G01R 15/26 using modulation of waves other than light, e.g. radio or acoustic waves
• CPC Class Codes: G01R 22/063 related to remote communication

Abstract

The present disclosure describes a system for monitoring energy data having at least one wireless current transformer, a metering circuit configured to receive an analog signal from the current transformer and to calculate energy data, a wireless transmitter unit in circuit with the metering circuit which is configured to transmit the energy data, and a receiver unit having a receiver, a processor in circuit with the receiver and configured to collect the energy data; and a display connected to the processor and configured to display the energy data. A method and apparatus for monitoring energy data is also presented.

Claims

1. A system for monitoring energy data comprising:

at least one wireless current transformer comprising;

a current transformer;

a metering circuit configured to receive an analog signal from the current transformer and to calculate energy data;

a wireless transmitter unit in circuit with the metering circuit, wherein the wireless transmitter unit is configured to transmit the energy data; and

a receiver unit comprising;

a receiver;

a processor in circuit with the receiver and configured to collect the energy data; and

a display connected to the processor and configured to display the energy data.

2. The system of claim 1, wherein the processor is configured to calculate at least one of kilowatts, kilowatt-hours, current, voltage or power demand.

3. The system of claim 1, wherein the wireless transmitter unit is self-sustained.

4. The system of claim 1, wherein the current transformer comprises a split-core transformer or a solid core transformer.

5. The system of claim 1, wherein the receiver further comprises a Modbus serial computer connection

6. The system of claim 1, wherein the wireless unit further comprises at least one current terminal location, voltage terminal location, A/D converter, power supply and an antenna.

7. The system of claim 1, wherein the current transformer is a low or medium voltage current transformer.

8. The system of claim 1, wherein the metering circuit is configured to receive an at least one analog signal from the current transformer, and wherein the metering circuit utilizes the analog current to calculate at least one of current, voltage, power or energy.

9. A wireless current transformer, comprising:

a current transformer;

a metering circuit configured to receive an analog signal from the current transformer and to calculate energy data; and

a wireless transmitter unit in circuit with the metering circuit, wherein the wireless transmitter unit is configured to transmit the energy data.

10. The apparatus of claim 9, wherein the processor is configured to calculate at least one of kilowatts, kilowatt-hours, current, voltage or power demand.

11. The apparatus of claim 9, wherein the wireless transmitter unit is self-sustained.

12. The apparatus of claim 9, wherein the current transformer comprises a split-core transformer or a solid core transformer.

13. The apparatus of claim 9, wherein the wireless transmitter unit further comprises at least one current terminal location, A/D converter, power supply and antenna.

14. The apparatus of claim 9, wherein the current transformer is a low or medium voltage current transformer.

15. The apparatus of claim 9, wherein the metering circuit is configured to receive an at least one analog signal from the current transformer, and wherein the meter circuit utilizes the analog current to calculate at least one of current, voltage, power or energy.

16. A method for monitoring energy data comprising:

measuring energy data from a current transformer via an analog signal to a metering circuit;

wirelessly transmitting the energy data via a wireless transmitter unit in circuit with metering circuit;

receiving the energy data at a receiving station;

collecting the energy data via a processor electronically connected to the receiver;

displaying the energy data.

17. The method of claim 16, wherein the collecting step comprises calculating at least one of kilowatts, kilowatt-hours, current, voltage or power demand.

18. The method of claim 16, wherein the wireless transmitter unit is self-sustained.

19. The method of claim 16, wherein the measuring step is configured to operate with a split-core transformer or a solid core transformer.

20. The method of claim 16, wherein the wireless transmitter unit comprises a Modbus serial computer connection

21. The method of claim 16, wherein the wireless transmitter unit further comprises at least one current terminal location, A/D converter, power supply and antenna.

22. The method of claim 16, wherein the current transformer is a low or medium voltage current transformer.

23. The method of claim 16, wherein the metering circuit is configured to receive an at least one analog signal from the current transformer, and wherein the meter circuit utilizes the analog current to calculate at least one of current, voltage, power or energy.