Monitoring device, monitoring system, monitoring method, correction information generation device, correction information generation method, and non-transitory storage medium

Patent metadata

Field	Value
Publication number	US-10495674-B2
Application number	US-201515115152-A
Country	US
Kind code	B2
Filing date	Jan 7, 2015
Priority date	Jan 29, 2014
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A monitoring device ( 10 ) includes a feature amount storage unit ( 11 ) that stores a device feature amount which is a feature amount of each of a plurality of electrical devices installed in a predetermined unit in operation; a measured data acquisition unit ( 12 ) that acquires measured data of the predetermined unit which is at least one of a total current consumption, a total power consumption, and a voltage measured in the predetermined unit; a feature amount extraction unit ( 13 ) that acquires a measurement feature amount which is the feature amount included in the measured data of the predetermined unit; a correction unit ( 15 ) that corrects a first feature amount which is the device feature amount or the measurement feature amount based on unit feature information indicating a feature of the predetermined unit; and a presumption unit ( 16 ) that presumes the electrical device being in operation using the corrected first feature amount, and a second feature amount which is the device feature amount or the measurement feature amount, and a different feature amount from the first feature amount.

First claim

The invention claimed is:

1. A monitoring device comprising:
a feature amount storage unit that stores a device feature amount which is a feature amount of each of a plurality of electrical devices installed in a predetermined unit in operation;
a measured data acquisition unit that acquires measured data of the predetermined unit which is at least one of a total current consumption, a total power consumption, and a voltage measured in the predetermined unit;
a feature amount extraction unit that acquires a measurement feature amount which is the feature amount included in the measured data of the predetermined unit;
a correction unit that corrects a first feature amount which is the device feature amount or the measurement feature amount in a direction in which a difference occurring between the device feature amount and the measurement feature amount due to disagreement between a measurement condition at the time of measurement of reference data for extracting the device feature amount and a measurement condition at the time of measurement of the measured data of the predetermined unit is cancelled; and
a presumption unit that presumes the electrical device being in operation using the corrected first feature amount, and a second feature amount which is the device feature amount or the measurement feature amount, and a different feature amount from the first feature amount.

2. The monitoring device according to claim 1 ,
wherein the correction unit corrects the first feature amount based on unit feature information indicating a feature of the predetermined unit.

3. The monitoring device according to claim 1 , further comprising:
a correction information generation unit that generates correction information for cancelling a difference between the device feature amount and the measurement feature amount based on the device feature amount and the measurement feature amount,
wherein the correction unit corrects the first feature amount based on the correction information.

4. The monitoring device according to claim 1 ,
wherein the unit feature information includes at least one of information regarding an interconnect in the predetermined unit and information for specifying the electrical device connected to the interconnect in the predetermined unit.

5. The monitoring device according to claim 4 ,
wherein the correction unit performs the correction in consideration of a feature of the predetermined unit as an LC circuit specified by setting the interconnect in the predetermined unit as inductance and regarding the electrical device connected to the interconnect in the predetermined unit as electrostatic capacitance.

6. The monitoring device according to claim 4 ,
wherein the first and second correction units perform the correction in consideration of a feature of the predetermined unit as an LC circuit specified by setting the interconnect in the predetermined unit as inductance and regarding the electrical device connected to the interconnect in the predetermined unit as electrostatic capacitance.

7. A monitoring system comprising:
the monitoring device according to claim 1 ; and
a transmission device that acquires measured data of the predetermined unit which is at least one of a total current consumption, a total power consumption, and a voltage measured by a measuring instrument installed in the predetermined unit and transmits the measured data of the predetermined unit to the monitoring device.

8. A monitoring device comprising:
a feature amount storage unit that stores a device feature amount which is a feature amount of each of a plurality of electrical devices installed in a predetermined unit in operation;
a measured data acquisition unit that acquires measured data of the predetermined unit which is at least one of a total current consumption, a total power consumption, and a voltage measured in the predetermined unit;
a feature amount extraction unit that acquires a measurement feature amount which is the feature amount included in the measured data of the predetermined unit;
a first correction unit that corrects the device feature amount in a direction in which a difference occurring between the device feature amount and the measurement feature amount due to disagreement between a measurement condition at the time of measurement of reference data for extracting the device feature amount and a measurement condition at the time of measurement of the measured data of the predetermined unit is cancelled;
a second correction unit that corrects the measurement feature amount in a direction in which a difference occurring between the device feature amount and the measurement feature amount due to disagreement between a measurement condition at the time of measurement of the reference data and a measurement condition at the time of measurement of the measured data of the predetermined unit is cancelled; and
a presumption unit that presumes the electrical device being in operation using the corrected device feature amount and the corrected measurement feature amount.

9. The monitoring device according to claim 8 ,
wherein the first correction unit corrects the device feature amount based on unit feature information indicating a feature of the predetermined unit, and
wherein the second correction unit corrects the measurement feature amount based on the unit feature information.

10. The monitoring device according to claim 8 , further comprising:
a correction information generation unit that generates correction information for cancelling a difference between the device feature amount and the measurement feature amount based on the device feature amount and the measurement feature amount,
wherein the first correction unit corrects the device feature amount based on the correction information, and
wherein the second correction unit corrects the measurement feature amount based on the correction information.

11. A monitoring device comprising:
a feature amount storage unit that stores a device feature amount which is a feature amount of each of a plurality of electrical devices installed in a predetermined unit in operation;
a measured data acquisition unit that acquires measured data of the predetermined unit which is at least one of a total current consumption, a total power consumption, and a voltage measured in the predetermined unit;
a correction unit that corrects the measured data of the predetermined unit in a direction in which a difference occurring between the device feature amount and the measurement feature amount extracted from the measured data of the predetermined unit due to disagreement between a measurement condition at the time of measurement of reference data for extracting the device feature amount and a measurement condition at the time of measurement of the measured data of the predetermined unit is cancelled;
a feature amount extraction unit that acquires a corrected measurement feature amount which is the feature amount included in the corrected measured data of the predetermined unit; and
a presumption unit that presumes the electrical device being in operation using the device feature amount and the corrected measurement feature amount.

12. The monitoring device according to claim 11 ,
wherein the correction unit corrects the measured data of the predetermined unit based on unit feature information indicating a feature of the predetermined unit.

13. The monitoring device according to claim 11 , further comprising:
a correction information generation unit that generates correction information for cancelling a difference between the reference data and the measured data of the predetermined uni

Assignees

• Nec Corp

Inventors

• Saneyoshi Eisuke
• TOIZUMI Takahiro
• Homma Kosuke
• Hashimoto Ryo
• Suzuki Katsuya

Classifications

• G01R21/133 Primary

  by using digital technique · CPC title

• G01R19/2513

  Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging · CPC title