Power measurement system and load power monitoring system using the same and operating method thereof

Patent metadata

Field	Value
Publication number	US-9787248-B2
Application number	US-201514963051-A
Country	US
Kind code	B2
Filing date	Dec 8, 2015
Priority date	Apr 2, 2015
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A load power monitoring system includes: an external power supply source; a renewable energy source configured to generate power or store a power applied from the external power supply source, and discharge the generated or stored power; a distribution board configured to distribute a power applied from the external power supply source or the renewable energy source to an electronic device; a power measurement device configured to detect power amount data of at least one of the external power supply source and the renewable energy source; a second power measurement device configured to detect power amount data distributed to the electronic device; and a monitoring server configured to collect power amount data detected by each of the power measurement devices and monitor a power of a load on the basis of the collected power amount data.

First claim

What is claimed is:

1. A load power monitoring system comprising:
an external power supply source;
a renewable energy source;
a distribution board including an input terminal electrically connected to the external power supply source and the renewable energy source and an output terminal electrically connected to a plurality of electronic devices;
a first power measurement device installed on a first device of the external power supply source, the renewable energy source and the distribution board and configured to obtain first power information of the first device;
a second power measurement device installed a second device of the external power supply source, the renewable energy source and the distribution board and configured to obtain second power information of the second device; and
a monitoring server configured to estimate third power information of a device on which no power measurement device is installed and to monitor power of the plurality of electronic devices,
wherein the third power information is estimated based on the obtained first and second power, and
wherein the power of the plurality of electronic devices is monitored based on the obtained first and second power information and the estimated third power information.

2. The system according to claim 1 , wherein the renewable energy source is at least a solar electricity generation device or an energy storage device.

3. The system according to claim 2 , wherein the solar electricity generation device includes a solar module and a control module configured to convert energy of the solar module into power when the renewable enemy source is the solar electricity generation device.

4. The system according to claim 3 , further comprising a third power measurement device connected to one end of the solar electricity generation device and configured to detect fourth power information that includes an amount of generated electricity and an amount of power output by the solar electricity generation device.

5. The system according to claim 2 , wherein the energy storage device is charged with power from the external power supply source and discharges power to an electronic device connected to the distribution board when the renewable energy source is the energy storage device.

6. The system according to claim 5 , further comprising a third power measurement device connected to one end of the energy storage device and configured to detect fourth power information that includes the amount of power from the external power supply source and the amount of power discharged by the energy storage device.

7. The system according to claim 1 , wherein the second power information includes an amount of power applied to the plurality of electronic devices and a power consumption pattern of the plurality of electronic devices.

8. The system according to claim 7 , wherein the power consumption pattern is obtained via a Non-intrusive Load Monitoring (NILM) algorithm.

9. The system according to claim 1 , wherein the server comprises:
a communication unit configured to collect power information from the power measurement devices;
a control unit configured to obtain the collected power information;
a storage unit configured to store the obtained power information; and
an output unit configured to output the stored power information.

10. The system according to claim 9 , wherein the control unit is further configured to estimate and obtain at least one of the first and second power information based on at least two of the collected power information.

11. A method of monitoring power loads, the method comprising:
obtaining first power information from a first device of an external power supply source, a renewable enemy source and a distribution board;
obtaining second power information from second device of the external power supply source, the renewable energy source and the distribution board;
estimating third power information of a device on which no power measurement device is installed; and
monitoring power of ea plurality of electronic devices,
wherein the third power information is estimated based on the obtained first and second power information, and
wherein the power of the plurality of electronic devices is monitored based on the obtained first and second power information and the estimated third power information.

12. The method according to claim 11 , wherein the second power information includes an amount of power applied to the plurality of electronic devices and an amount of power consumed in the plurality of electronic devices.

13. The method according to claim 12 , wherein amount of power applied to the plurality of electronic devices includes a power consumption pattern of the plurality of electronic devices.

14. The method according to claim 11 , wherein power information of the renewable energy source is estimated based on addition and subtraction of the first power information and the second power information.

15. The method according to claim 11 , wherein power information of the renewable energy source is estimated based on a difference between the first power information and the second power information.

16. The method according to claim 15 , wherein the first and second power information is estimated based on a power charging amount or a power discharging amount when the renewable energy source is the energy storage device.

17. The method according to claim 11 , wherein the first power information is estimated based on a sum of the second power information and power information of the renewable energy source.

18. The method according to claim 11 , wherein the first power information is estimated based on a difference between a sum of the second power information and power information of a plurality of renewable energy sources.

19. The method according to claim 11 , wherein power amount information of a second of a plurality of renewable energy sources is estimated based on a difference between a first power amount energy and a sum of a first power amount energy and a power amount energy of a first of the plurality of renewable energy sources.

20. The method according to claim 19 , wherein:
the renewable energy source includes an enemy storage device; and
power amount information of the energy storage device includes amounts of power charged and discharged.

Assignees

• Lsis Co Ltd

Inventors

• Park Hun
• Yu Young Gyu

Classifications

• H02J3/381

  Dispersed generators · CPC title

• H02J2101/22

  Solar energy · CPC title

• H02J2101/20

  Dispersed power generation using renewable energy sources · CPC title

• G01R21/133

  by using digital technique · CPC title

• G01R22/00 Primary

  Arrangements for measuring time integral of electric power or current, e.g. electricity meters · CPC title