Determining method and determining apparatus

Patent metadata

Field	Value
Publication number	US-10534062-B2
Application number	US-201815961456-A
Country	US
Kind code	B2
Filing date	Apr 24, 2018
Priority date	May 16, 2017
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

A determining method includes: acquiring a measured value for an amount of electric power consumed by the load, the measured value being measured by a watt-hour meter; and determining whether a setting set in a watt-hour meter, the setting according to a current transformation ratio of a current transformer, is appropriate, according to a difference between a predicted value for an amount of electric power to be consumed by a load and the measured value for an amount of electric power consumed by the load.

First claim

What is claimed is:

1. A determining method comprising:
determining a predicted power consumption, by predicting an amount of electric power to be consumed by a load in a time period through a simulation;
acquiring a measured power consumption, indicating an amount of electric power consumed by the load measured by a watt-hour meter, the watt-hour meter including a current transformer, in which a setting value defining a current transformation ratio of the current transformer is set;
determining a difference between the predicted power consumption and the measured power consumption; and
determining whether or not the setting value set in the watt-hour meter is appropriate, according to the difference between the predicted power consumption and the measured power consumption.

2. The determining method according to claim 1 , wherein:
when the difference between the predicted power consumption and the measured power consumption is larger than a threshold, the setting value is determined to be inappropriate; and
when the difference is smaller than the threshold, the setting value is determined to be appropriate.

3. The determining method according to claim 1 , wherein:
when the difference between the predicted power consumption and the measured power consumption is within a first range, the setting value is determined to be appropriate; and
when the difference is within a second range, which indicates that the difference in the second range is larger than in the first range, the setting value is determined to be inappropriate.

4. The determining method according to claim 3 , wherein the first range is set in accordance with the load.

5. The determining method according to claim 3 , wherein the second range is set in accordance with a pattern of a setting mistake in the setting value.

6. The determining method according to claim 5 , wherein the second range is set in accordance with the load as well as the pattern of the setting mistake.

7. The determining method according to claim 1 , wherein when the setting value is determined to be inappropriate, a display image indicating that the setting value is inappropriate is displayed on a display.

8. The determining method according to claim 1 , wherein when the setting value is determined to be inappropriate, an appropriate setting value is displayed on a display.

9. A determining apparatus comprising:
a memory that stores instructions:
a processor, when executing the instructions stored in the memory, that performs operations including:
determining a predicated power consumption, by predicting an amount of electric power to be consumed by a load in a time period through a simulation;
acquiring a measured power consumption, indicating an amount of electric power consumed by the load measured by a watt-hour meter, the watt-hour meter including a current transformer, in which a setting value defining a current transformation ratio of the current transformer is set;
determining a difference between the predicted power consumption and the measured power consumption; and
determining whether or not the setting value set in the watt-hour meter is appropriate, according to the difference between the predicted consumption and the measured consumption.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Fujihara Tadato

Classifications

• G01R35/04 Primary

  of instruments for measuring time integral of power or current · CPC title

• G01R35/02 Primary

  of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating · CPC title

• G01R22/068

  Arrangements for indicating or signaling faults · CPC title

• G01R15/18

  using inductive devices, e.g. transformers · CPC title