Monitoring load operation

Patent metadata

Field	Value
Publication number	US-11029346-B2
Application number	US-202016795741-A
Country	US
Kind code	B2
Filing date	Feb 20, 2020
Priority date	Jan 18, 2013
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A load monitoring system for a facility includes a computer system configured to execute a model of the object, the model configured to estimate a state of the object as a function of measured values of at least one characteristic of the object, receive at least one measured value of the at least one characteristic of the object, and execute, by the computer system, the model to compute an estimated state of the object.

First claim

What is claimed is:

1. A system for monitoring an electric load powered from a power supply, the system comprising:
a plurality of sensors each configured to measure at least one value of at least one characteristic of the load and transmit at least one measured value of the at least one characteristic, a first sensor of the plurality of sensors configured to measure a first characteristic at a first plurality of times and a second sensor of the plurality of sensors configured to measure a second characteristic at a second plurality of times; and
a computer system configured to:
receive the at least one measured value from the first sensor and the second sensor;
compute an estimated state of the load in response to receiving the at least one measured value from the first sensor and the second sensor;
execute a model configured to estimate a state of the load as a function of the at least one measured value of the at least one characteristic of the load;
receive at least one measured value of at least one characteristic of a second load; and
execute the model for the second load to compute an estimated state of the second load, wherein the model is changed before being executed for the second load.

2. The system of claim 1 , wherein the first plurality of times is staggered from the second plurality of times.

3. The system of claim 1 , wherein the first plurality of times is the same as the second plurality of times.

4. The system of claim 1 , wherein each of the plurality of sensors is configured to transmit the at least one measured value of the at least one characteristic of the load upon detection of a change in the at least one characteristic of the load.

5. The system of claim 4 , wherein the change is a change in a state of the load between an on state and an off state.

6. The system of claim 1 , wherein the first characteristic is the same as the second characteristic.

7. The system of claim 1 , further configured to request more frequent measurements from one or more sensors of the plurality of sensors in response to determining that the second sensor has failed.

8. The system of claim 1 , further configured to:
in response to a failure of the first sensor and a failure of the second sensor, determine an estimated state of the load using a measurement from a third sensor of a third characteristic different than the first and second characteristics.

9. The system of claim 1 , wherein the computer system is further configured to:
execute a first model of the load, the first model configured to compute a first estimate of a state of the load as a function of at least a first measured value from the plurality of sensors;
execute a second model of the load, the second model configured to compute a second estimate of the state of the load as a function of at least a second measured value from the plurality of sensors; and
execute a third model of the load, the third model configured to compute the estimated state of the load in response to receiving the at least one measured value, the first estimate, and the second estimate.

10. A method of monitoring an electric load, the method comprising:
providing power to the load via a power supply;
measuring, by each of a plurality of sensors, at least one value of at least one characteristic of the load, a first sensor of the plurality of sensors measuring a first characteristic at a first plurality of times and a second sensor of the plurality of sensors measuring a second characteristic at a second plurality of times;
transmitting the at least one measured value from the first sensor and the second sensor to a computer system;
receiving, by the computer system, the at least one measured value from the first sensor and the second sensor;
computing, by the computer system, an estimated state of the load in response to receiving the at least one measured value from the first sensor and the second sensor;
executing, by the computer system, a model configured to estimate a state of the load as a function of the at least one measured value of the at least one characteristic of the load;
receiving, by the computer system, at least one measured value of at least one characteristic of a second load; and
executing, by the computer system, the model for the second load to compute an estimated state of the second load, wherein the model is changed before being executed for the second load.

11. The method of claim 10 , wherein the first plurality of times is staggered from the second plurality of times.

12. The method of claim 10 , wherein the first plurality of times is the same as the second plurality of times.

13. The method of claim 10 , wherein transmitting the at least one measured value further comprises:
transmitting the at least one measured value of the at least one characteristic of the load upon detection of a change in the at least one characteristic of the load.

14. The method of claim 13 , wherein the change is a change in a state of the load between an on state and an off state.

15. The method of claim 10 , wherein the first characteristic is the same as the second characteristic.

16. The method of claim 10 , further comprising:
requesting, by the computer system, more frequent measurements from one or more sensors of the plurality of sensors in response to determining that the second sensor has failed.

17. The method of claim 10 , further comprising:
in response to a failure of the first sensor and a failure of the second sensor, determining, by the computer system, an estimated state of the load using a measurement from a third sensor of a third characteristic different than the first and second characteristics.

18. The method of claim 10 , further comprising:
executing, by the computer system, a first model of the load, the first model configured to compute a first estimate of a state of the load as a function of at least a first measured value from the plurality of sensors;
executing, by the computer system, a second model of the load, the second model configured to compute a second estimate of the state of the load as a function of at least a second measured value from the plurality of sensors; and
executing, by the computer system, a third model of the load, the third model configured to compute the estimated state of the load in response to receiving the at least one measured value, the first estimate, and the second estimate.

Assignees

• Schneider Electric Usa Inc

Inventors

• Van Gorp John C
• Yeo Jeffrey W
• Tovey Peter

Classifications

• H02J2103/30

  Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks · CPC title

• G01R21/00 Primary

  Arrangements for measuring electric power or power factor (G01R7/12 takes precedence) · CPC title

• H02J9/061

  for DC powered loads · CPC title

• Y04S10/50

  Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications · CPC title

• Y02E60/00

  Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation · CPC title