# US 11,029,346 B2 · Monitoring load operation

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- Number: US 11,029,346 B2
- Document ID: US11029346B2
- Status: Granted
- Kind: B2
- Application number: 16/795,741
- Filed: 2020-02-20
- Published: 2020-07-23
- Granted: 2021-06-08
- Earliest claimed: 2020-02-20
- Assignees: Schneider Electric USA, Inc.
- Applicants: Schneider Electric USA, Inc.
- Inventors: John C. Van Gorp; Jeffrey W. Yeo; Peter Tovey
- Web page: https://patentgrep.com/patent/US11029346B2

## CPC

- G01R 21/00: Arrangements for measuring electric power or power factor (G01R7/12 takes precedence)
- H02J 3/00: Circuit arrangements for AC mains or AC distribution networks
- H02J 9/061: {for DC powered loads}
- H02J 13/182: the equipment comprising loads connected to the power network
- H02J 3/003: {Load forecast, e.g. methods or systems for forecasting future load demand}
- H02J 2103/30: Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y04S 10/50: Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S 40/20: Information technology specific aspects, e.g. CAD, simulation, modelling, system security
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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

### Claim 3 (depends on 1)

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

### Claim 4 (depends on 1)

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.

### Claim 5 (depends on 4)

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.

### Claim 6 (depends on 1)

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

### Claim 7 (depends on 1)

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.

### Claim 8 (depends on 1)

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.

### Claim 9 (depends on 1)

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.

### Claim 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.

### Claim 11 (depends on 10)

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

### Claim 12 (depends on 10)

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

### Claim 13 (depends on 10)

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.

### Claim 14 (depends on 13)

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.

### Claim 15 (depends on 10)

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

### Claim 16 (depends on 10)

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.

### Claim 17 (depends on 10)

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.

### Claim 18 (depends on 10)

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.