Capacitor Bank Monitor and Method of use Thereof

• US 20090231764A1
• Filed: 03/14/2008
• Published: 09/17/2009
• Est. Priority Date: 03/14/2008
• Status: Abandoned Application

• Current Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Kulkarni, Anand Sharad, Banting, John Fredrick
• Application Number:
  US12/048,963
• Publication Number:
  US 20090231764A1
• Time in Patent Office: Days
• US Class Current: 361/15
• CPC Class Codes: H02H 3/046 Signalling the blowing of a fuse detecting non functioning of a lamp H05B47/20
• CPC Class Codes: H02H 7/16 for capacitors for synchronous capacitors H02H7/06

Abstract

A capacitor bank monitor apparatus for monitoring a state of a common ground connected to a capacitor bank comprises a sensor that that can be coupled to the common ground for collecting measurements relating to the state of the common ground. The monitor also comprises a controller that is logically coupled to the sensor for receiving the measurements and determining whether a fuse on the capacitor bank has opened. The ground monitor also comprises a communications facility that is logically coupled to the controller for communicating a notification that the fuse has opened. The communications facility may comprise a cellular communications device. The ground monitor also may comprise a filter that is electrically connected to the sensor and the controller. The ground monitor also may comprise memory that is logically coupled to the controller for storing at least one state of the common ground.

Claims

1. A monitor for a capacitor bank, wherein the capacitor bank comprises a power line, the power line being electrically connected to a fuse and at least one capacitor of the capacitor bank, wherein the at least one capacitor is coupled to a common ground, comprising:

a sensor that can be coupled to the common ground and that is configured to collect measurements relating to at least one state of the common ground; and

a controller logically coupled to the sensor and configured to receive the measurements from the sensor and to determine whether the fuse has opened based on the measurements.

2. The monitor of claim 1, further comprising a filter configured to identify particular measurements from the sensor and to pass the particular measurements to the controller.

3. The monitor of claim 1, further comprising a memory logically coupled to the controller and configured to store the measurements.

4. The monitor of claim 1, further comprising a communications facility logically coupled to the controller and configured to communicate a notification that the fuse has opened.

5. The monitor of claim 4, further comprising a memory logically coupled to the controller and configured to store the measurements, wherein the communications facility is further logically coupled to the memory to receive the at least one state of the common ground and to communicate the at least one state of the common ground.

6. The monitor of claim 4, wherein the communications facility comprises a cellular communications device.

7. The monitor of claim 4, wherein the communications facility communicates the notification to at least one of a telephone number, an internet address, and an email address.

8. The monitor of claim 1, wherein the at least one state of the neutral line comprises an amplitude of an operating frequency of current of the capacitor bank.

9. A capacitor bank, comprising:

a branch line comprising a power line;

a fuse electrically connected to the power line;

at least one capacitor electrically connected to the fuse;

a common ground electrically connected to the at least one capacitor;

a sensor coupled to the common ground and configured to collect measurements relating to at least one state of the common ground; and

a controller logically coupled to the sensor and configured to receive the measurements and to determine whether the fuse has opened based on the measurements.

10. The capacitor bank of claim 9, further comprising a filter configured to identify particular measurements from the sensor and to pass the particular measurements to the controller.

11. The capacitor bank of claim 9, further comprising a memory logically coupled to the controller and configured to store the measurements.

12. The capacitor bank of claim 9, further comprising a communications facility logically coupled to the controller and configured to communicate a notification that the fuse has opened.

13. The capacitor bank of claim 12, further comprising a memory logically coupled to the controller and configured to store the measurements, wherein the communications facility is further logically coupled to the memory to receive the at least one state of the common ground and to communicate the at least one state of the common ground.

14. The capacitor bank of claim 12, wherein the communications facility comprises a cellular communications device.

15. The capacitor bank of claim 12, wherein the communications facility communicates the notification to at least one of a telephone number, an internet address, and an email address.

16. The capacitor bank of claim 9, wherein the at least one state of the common ground comprises an amplitude of an operating frequency of current through the common ground.

17. A method for determining the state of a capacitor bank, comprising:

measuring at least one state of a common ground electrically coupled to the capacitor bank; and

determining whether a fuse electrically coupled to a power line and the capacitor bank has opened based on the at least one state of the common ground.

18. The method of claim 17, further comprising the steps of

determining whether the state of the common ground is indicative of a potential failure in the capacitor bank;

and

communicating a notification of the potential failure.

19. The method of claim 18, further comprising storing the state in a memory.

20. The method of claim 17, further comprising the step of communicating a notification that the fuse has opened in response to determining that the fuse has opened.

21. The method of claim 17, wherein the communicating step comprises one of contacting a telephone number of an intended recipient of the notification, sending a text message to the intended recipient of the notification, and establishing an internet connection with the intended recipient of the notification.

22. The method of claim 17, wherein the state of the common ground comprises an amplitude of an operating frequency of current through the common ground.

23. The method of claim 17, further comprising the step of measuring at least one second state of the capacitor bank.

24. The method of claim 23, wherein the at least one second state is one of a temperature and a vibration of the capacitor bank.