Method and apparatus for correcting meter data for enhancement of electricity data management of photovoltaic module

Patent metadata

Field	Value
Publication number	US-9429448-B2
Application number	US-201414248417-A
Country	US
Kind code	B2
Filing date	Apr 9, 2014
Priority date	Apr 9, 2013
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

Abstract

An apparatus and a method of correcting meter data for enhancement of electricity data management in a remote automatic measuring environment of a photovoltaic module are disclosed. According to an exemplary embodiment, a meter reads energy usage of a consumer and transmits meter data on the energy usage to an automatic meter reading (AMR) server. A meter data management system monitors an error in the transmitted meter data and a non-reading interval and re-requests collection of an error in meter data and a non-reading interval to the AMR server. When an error and a non-reading interval are found even after meter data is collected on the re-requesting, the error in the meter data and the non-reading interval are corrected using an estimated approximate value based on a history of previous meter data accumulated in a database of the AMR server.

First claim

What is claimed is:

1. A method of correcting meter reading data, the method comprising:
reading energy usage of a consumer by a meter and transmitting meter data on the energy usage to an automatic meter reading (AMR) server;
monitoring, by a meter data management system, an error in the transmitted meter data and a non-reading interval;
re-requesting collection of an error in meter data and a non-reading interval to the AMR server; and
correcting the error in the meter data and the non-reading interval using an estimated approximate value based on a history of previous meter data accumulated in a database of the AMR server when an error and a non-reading interval are found even after meter data is collected on the re-requesting,
wherein the correcting of the error in the meter data and the non-reading interval corrects the error in the meter data and the non-reading interval using the error in the meter data and meter data at a start time and an end time of the non-reading interval and enhances the error in the meter data and the non-reading interval using a correction result after verifying that the correction result is included in a valid range of a history of previous meter data, and
wherein the method defines linear functions touching a meter data pattern at points of ‘the start time of the error or the non-reading interval −a 1 unit time’ and ‘the end time of the error or the non-reading interval +a 1 unit time and acquires an intersecting point of the two linear functions.

2. The method of claim 1 , wherein the method generates a function connecting three sets of coordinates of the points of ‘the start time of the error or the non-reading interval −a 1 unit time’ and ‘the end time of the error or the non-reading interval +a 1 unit time’ and the intersecting point and acquires corrected and enhanced meter data at the points.

3. The method of claim 2 , wherein the method compares the corrected and enhanced meter data with meter data at the same time of a previous day or a statistic value of the history of previous meter data at the same time, and corrects and enhances the error in the meter data and the non-reading interval by determining a value between a maximum value and a minimum value of the history as a corrected and enhanced meter data value when the corrected and enhanced meter data has the value.

4. The method of claim 1 , wherein the reading of the energy usage of the consumer through the meter and transmitting of the meter data on the energy usage to the AMR server comprises generating electricity data by a photovoltaic module and gathering the electricity data, and converting the electricity data on direct current (DC) power into alternating current (AC) power and transmitting the converted electricity data to the consumer.

5. The method of claim 1 , wherein the meter data on the energy usage is stored and managed in the AMR server by minutes, hours, days, months and years, and maintained and managed as an energy load profile in the AMR server.

6. The method of claim 1 , wherein the monitoring, by the meter data management system, of the error in the transmitted meter data and the non-reading interval monitors an energy load profile based on an analysis result of accumulated states of energy load profiles and consumer profiles by the meter data management system and requests analysis of the error and the non-reading interval to the energy data correction enhancement system when the error in the meter data and the non-reading interval are identified.

7. The method of claim 1 , wherein the re-requesting of collection of the error in the meter data and the non-reading interval to the AMR server extracts the error in the meter data and the non-reading data by intervals by the energy data correction enhancement system to re-request collection of meter data on the non-reading interval to the AMR server while the AMR server recollects and accumulates meter data on the interval from the meter.

8. The method of claim 1 , wherein the correcting of the error in the meter data and the non-reading interval corrects the error in the meter data and the non-reading interval using the error in the meter data and meter data at a start time and an end time of the non-reading interval and enhances the error in the meter data and the non-reading interval using a correction result after verifying that the correction result is included in a valid range of a history of previous meter data.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Yoo Yoon-Sik
• Lee Il Woo

Classifications

• G01D4/002 Primary

  Remote reading of utility meters · CPC title

• Y04S20/36

  Cross-Sectional Technologies · mapped topic

• Y04S20/32

  Cross-Sectional Technologies · mapped topic

• Y04S20/52

  Cross-Sectional Technologies · mapped topic

• Y02B90/248

  Cross-Sectional Technologies · mapped topic