Energy management system

• US 20040220702A1
• Filed: 02/26/2004
• Published: 11/04/2004
• Est. Priority Date: 03/18/2003
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Matsubara, Masahiro, Harada, Yasushi
• Application Number:
  US10/785,951
• Publication Number:
  US 20040220702A1
• Time in Patent Office: Days
• US Class Current: 700/291
• CPC Class Codes: H02J 2310/60 Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving

Abstract

An energy management system that is easy to introduce and capable of effectively saving energy includes energy-related information input means for the input of energy-related information, energy-related information recognizing means for recognizing energy-related information, energy-related information storage means for storing energy-related information, and energy-related information analysis means for estimating information that has not been measured by analyzing the recognized energy-related information.

Claims

1. An energy management system comprising:

energy-related information input means for the input of predetermined energy-related information;

energy-related information storage means for storing said energy-related information; and

energy-related information analysis means for inferring information that has not been measured, from said energy-related information.

2. The energy management system according to claim 1, wherein said energy-related information input means comprises:

equipment operation information input means for the input of equipment operation information, which is information about the operation of equipment related to a building; and

/or

physical quantity measurement value input means for the input of a physical quantity measurement value indicating the state of a predetermined portion of the inside or outside of said building, or a change in said state.

3. The energy management system according to claim 1, wherein said energy-related information input means comprises building occupant subjective information input means for the input of building occupant subjective information indicating the perceptions of a person inside the building.

4. The energy management system according to claim 1, wherein said energy-related information analysis means comprises:

purpose-by-purpose breakdown analysis means for estimating a purpose-by-purpose breakdown of the amount of energy use such as that of electric power; and

/or

parameter estimation means for estimating parameters for a calculation formula related to energy consumption, such as the amount of energy use, air-conditioning heat load, heat circuit, and power circuit.

5. The energy management system according to claim 1, wherein said energy-related information analysis means comprises physical quantity estimation means for estimating a physical quantity that has not been measured.

6. The energy management system according to claim 1, wherein said energy-related information analysis means comprises equipment operation state estimation means for estimating the state of operation of equipment that has not been measured.

7. The energy management system according to claim 1, wherein said energy-related information analysis means comprises numeric pattern estimation means for estimating a numeric pattern that can be expressed as a function relating to energy consumption and which takes time as an argument, such as an equipment operation ratio, equipment load ratio, energy use amount, or the number of occupants.

8. The energy management system according to claim 1, wherein said energy-related information analysis means comprises inefficiency analysis means for estimating the location where there is an inefficient use of energy, and the extent or cause thereof.

9. The energy management system according to claim 1, wherein said energy-related information analysis means comprises spatial state estimation means for estimating the state of a space, such as the atmospheric temperature, utilization rate of a room, or the effectiveness of air conditioning.

10. The energy management system according to claim 1, further comprising a building equipment/unit database for storing information relating to a building and equipment/unit, such as the structure or attributes of the building, the specification or characteristics of equipment/unit.

11. The energy management system according to claim 1, further comprising analysis content input means for requesting or designating the content of processing by said energy-related information analysis means.

12. The energy management system according to claim 1, further comprising energy-related information display means for displaying said energy-related information or the result of processing by said energy-related information analysis means.

13. The energy management system according to claim 1, further comprising equipment control means for controlling equipment related to the building, using the result of analysis by said energy-related information analysis means as an input.

14. The energy management system according to claim 1, further comprising energy-related information analysis possibility calculation means that calculates, upon the input of the type or amount of energy-related information that is newly added or the type or amount of the energy-related information input means, the type, amount, or accuracy of information that is currently unknown but which can be either newly estimated based on the result of analysis or by which estimation accuracy can be improved.

15. The energy management system according to claim 1, further comprising energy-related information necessity calculation means for calculating the type, amount or point of measurement of energy-related information that is to be newly added or the energy-related information input means, upon the input of the type of energy-related information that is currently unknown but that is desired to be newly estimated.

16. The energy management system according to claim 14, wherein said energy-related information analysis possibility calculation means gives priority to the output from an economical viewpoint.

17. The energy management system according to claim 1, further comprising:

building administrator-side contact means for an administrator of a building occupant-side contact means; and

building occupant-side contact means for an occupant of said building, wherein

said administrator and said occupant can send a notice, a request, or a response to a request between each other using said means.

18. The energy management system according to claim 1, wherein said energy-related information input means comprises a terminal such as a personal computer coupled to a network, wherein the operation information about each terminal is inputted as said energy-related information.

21. The energy management system according to claim 15, wherein said energy-related information necessity calculation means gives priority to the output from an economical viewpoint.

19. A method of managing energy in a managed object, comprising the steps of inputting measured information related to energy consumption and/or available information, and analyzing the inputted information to obtain information that has not been measured.

20. A system for managing energy in a managed object, said system comprising:

input means for the input of measured information related to energy consumption and/or available information; and

analyzing means for analyzing the inputted information.