NETWORK SYSTEM AND METHOD OF CONTROLLING NETWORK SYSTEM

• US 20130131876A1
• Filed: 11/24/2010
• Published: 05/23/2013
• Est. Priority Date: 11/24/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Koonseok, Lee, Hoonbong, Kim, Yanghwan, Kim, Daewoong
• Granted Patent: US 9,256,214 B2
• Time in Patent Office: Days
• US Class Current: 700/286
• CPC Class Codes: G05B 13/02 electric
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00026 involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 2300/20 The dispersed energy generation being of renewable origin
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy wind motors F03D
• CPC Class Codes: H02J 2300/40 wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
• CPC Class Codes: H02J 3/008 involving trading of energy or energy transmission rights
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• CPC Class Codes: Y02E 40/70 Smart grids as climate change mitigation technology in the energy generation sector
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/123 the energy generation units being or involving renewable energy sources
• CPC Class Codes: 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
• CPC Class Codes: Y04S 40/124 using wired telecommunication networks or data transmission busses
• CPC Class Codes: Y04S 40/126 using wireless data transmission
• CPC Class Codes: Y04S 50/10 Energy trading, including energy flowing from end-user application to grid

Abstract

Provided are a network system and a method of controlling the same. The network system includes an energy supply part including a plurality of power supply sources, an energy metering part communicating with the plurality of power supply sources, the energy metering measuring energy supplied from the plurality of power supply sources, an energy management part receiving energy-related information supplied from the energy supply part, and an energy consumption part consuming power supplied from the energy supply part, the energy consumption part being operable and controllable by the energy management part. At least one power supply source of the plurality of power supply sources is selected according to an order of priority of a power supply, based on energy information related to the plurality of power supply sources. Thus, the power supply source having minimum costs is selected to efficiently manage energy within an intellectual power supply network.

Claims

1. A network system comprising:

an energy supply part comprising a plurality of power supply sources;

an energy metering part communicating with the plurality of power supply sources, the energy metering measuring energy supplied from the plurality of power supply sources;

an energy management part receiving energy-related information supplied from the energy supply part; and

an energy consumption part consuming power supplied from the energy supply part, the energy consumption part being operable and controllable by the energy management part,

wherein at least one power supply source of the plurality of power supply sources is selected according to an order of priority of a power supply, based on energy information related to the plurality of power supply sources.

2. The network system according to claim 1, wherein the order of priority of the power supply is decided according to energy costs of the plurality of power supply sources.

3. The network system according to claim 1, wherein the energy information comprises at least one of suppliable power amount information, energy charge information, energy quality information, and suppliable time information.

4. The network system according to claim 1, wherein the plurality of power supply sources comprises a power source supplied from a power plant or a self-powered supply source.

5. The network system according to claim 4, wherein the power source supplied from the power plant comprises at least one of a thermal power plant, a nuclear power plant, a solar power plant, and a wind power plant.

6. The network system according to claim 4, wherein the self-powered supply source comprises at least one of a distributed power source, an electric vehicle, and a solar cell.

7. The network system according to claim 4, wherein the self-powered supply source is constituted by the plurality of power supply sources in which an order of priority is set.

8. The network system according to claim 7, wherein the order of priority of the self-powered supply source is decided based on power information such as a sale price of the self power, a power generation per time, a power generation per day, or a suppliable power amount.

9. The network system according to claim 1, wherein the plurality of power supply source comprises:

a main power supply source; and

a post-order power supply source having a low order of priority that the main power supply source.

10. The network system according to claim 9, wherein the post-order power supply source except the main power supply source is selectively used based on a comparison result between a set power amount and predicted power consumption.

11. The network system according to claim 10, wherein the set power amount comprises an available power amount during a set period or a power amount corresponding to a set charge.

12. The network system according to claim 10, wherein the predicted power consumption is calculated by predicting a future power consumption pattern, based on power consumption information per sampled period.

13. The network system according to claim 10, wherein, when the set power amount is greater than the predicted power consumption, only the main power supply source is used.

14. The network system according to claim 10, wherein, when the set power amount is less than the predicted power consumption, the post-order power supply source except the main power supply source is used.

15. A network system comprising:

a power plant area network in which energy information within a power plant component communicates, the power plant area network comprising at least one power plant component, which supplies energy; and

a power consumption area network in which energy information within a home or office communicates, the power consumption area network comprising a self-powered supply source in which energy is generated by itself,

wherein the component constituting the power consumption area consumes energy supplied from the power plant component or the self-powered supply source,

wherein at least one of the plurality of power supply sources comprising the power plant component and the self-powered supply source is selected as a usage power supply source based on a preset order of priority.

16. The network system according to claim 15, wherein, when suppliable power amount of the self-powered supply source is greater than a required power amount, the self-powered supply source is selected as the usage power supply source.

17. The network system according to claim 15, wherein, when suppliable power amount of the self-powered supply source is less than a required power amount, the power plant component is selected as the usage power supply source.

18. The network system according to claim 17, wherein, when a power supply source of the power plant component is provided in plurality, a power supply source having the most inexpensive charge is selected as the usage power supply source.

19. The network system according to claim 15, wherein the power plant area network communicates with the power consumption area network.

20. A method of controlling a network system comprising a plurality of power supply sources, the method comprising:

recognizing an available power supply source of the plurality of power supply sources;

when the available power supply source is provided in plurality, receiving energy information of each of the available power supply sources; and

selecting at least one power supply source according to an order of priority, based on the energy information.

21. The method according to claim 20, wherein the order of priority is decided according to energy costs.

22. The method according to claim 20, wherein the plurality of power sources comprises a self-powered supply source and a power plant supply source,

wherein the self-powered supply source or the power plant supply source is selectively used based on a comparison result between a power amount of the self-powered supply source and a required power amount.

23. The method according to claim 22, wherein, when the power amount of the self-powered supply source is greater than the required power amount, the self-powered supply source is used.

24. The method according to claim 22, wherein, when the power amount of the self-powered supply source is less than the required power amount, the power plant supply source is used.

25. The method according to claim 20, wherein the plurality of power supply sources comprises a main power supply source and a post-order power supply source,

wherein the main power supply source or the post-order power supply source is selectively used based on a comparison result between a set power amount and predicted power consumption.

26. The method according to claim 25, wherein, when the set power amount is less than the predicted power consumption, the main power supply source and the post-order power supply source are used together.

27. The method according to claim 25, wherein, when the set power amount is greater than the predicted power consumption, only the main power supply source is used.