Method and system to calculate a demand for energy

• US 7,406,364 B2
• Filed: 09/12/2002
• Issued: 07/29/2008
• Est. Priority Date: 09/13/2001
• Status: Expired due to Term

• Current Assignee: Hitachi Energy Switzerland AG (Hitachi, Ltd.)
• Original Assignee: ABB AB (ABB Limited)
• Inventors: Zhou, Gang, Rissanen, Markku, Andrén, Anders, Löfgren, Peter
• Primary Examiner(s): Shechtman; Sean P
• Application Number:
  US10/489,717
• Publication Number:
  US 20050055137A1
• Time in Patent Office: 2,147 Days
• Field of Search: 700/9, 700/11, 700/12, 700/15, 700/17, 700/22, 700/28, 700/29, 700/83, 700286-288, 700/291, 700295-298, 705/412, 702/60, 702/61, 702/62, 702/188, 715/700, 715/748, 715/750, 715/961, 715/962, 715/963
• US Class Current: 700/286
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 30/02 Marketing; Price estimation or determination; Fundraising
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• CPC Class Codes: H02J 3/003 Load forecast, e.g. methods or systems for forecasting future load demand
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• 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 20/222 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 50/14 Marketing, i.e. market research and analysis, surveying, promotions, advertising, buyer profiling, customer management or rewards

Abstract

A method to calculate energy demand in an energy generation, transmission and distribution network including one or more power plants based on different energy source types including renewable energy, a communications system and one or more local consumption metering units. A customer demand profile for one or more customers is provided. A customer-specified proportion of power demand to be supplied from a given energy source type is registered. A total predicted energy demand dependent is calculated in part on an accumulated demand for the given energy source type.

Claims

1. A method to calculate energy demand in an energy generation, transmission and distribution network, comprising one or more power plants based on different energy source types including renewable energy, a communications system and one or more local consumption metering units, the method comprising:

providing a customer demand profile for one or more customers,

registering a customer-specified proportion of power demand to be supplied from a given energy source type and a given supplier,

registering a customer-specified maximum cost price profile,

calculating a total predicted energy demand dependent in part on an accumulated demand for the given energy source type and the given supplier,

determining available energy source types, demands for the available energy source types and cost price of energy for the available energy source types, and

supplying energy to the one or more customers based on the customer demand profile, customer-specified proportion of power demand, customer maximum cost price profile, calculated total predicted energy demand, available energy source types, demands for the available energy source types and cost price of energy for the available energy source types.

2. The method according to claim 1, further comprising:

calculating a total accumulated energy demand dependent on accumulated demands from every available power supply of a given energy source type,

providing a customer demand profile to one or more customers, and

supplying power from an optimized mix of available power supplies from different energy source types to meet the calculated total accumulated demands.

3. The method according to claim 1, further comprising:

calculating a total accumulated energy demand dependent in part on cost price for power produced by available power supply sources; and

supplying power in accordance with the calculated total accumulated energy demand.

4. The method according to claim 1, further comprising:

calculating a total accumulated energy demand dependent in part on a known cost price for power purchased from any available power supply source; and

supplying power in accordance with the calculated total accumulated energy demand.

5. The method according to claim 1, further comprising:

optimizing a mix of power supplies from different energy source types by means of a multidimensional root finding algorithm.

6. The method according to claim 1, further comprising:

specifying consumer power consumption changes by means of any of load scheduling, load switching, load shedding configured through an intelligent control unit relative to a consumer; and

supply power in accordance with the specified consumer power consumption changes.

7. The method according to claim 6, further comprising:

making consumer power consumption changes by means of instructions issued centrally by a Power Supply Company communication central to a local intelligent control unit.

8. The method according to claim 6, further comprising:

making consumer power consumption changes by means of instructions issued locally by a intelligent control unit.

9. The method according to claim 1, further comprising:

specifying consumer demand by means of the consumer demand profile as well as configuration load switching by a local intelligent control unit.

10. A system to calculate energy demand in an energy generation, transmission and distribution network, comprising:

one or more energy producing plants including plants based on renewable energy sources,

a communications system comprising an energy demand profile for a power consumer and a maximum cost price profile for the power consumer, the energy demand profile including a customer-specified proportion of power to be supplied from a given energy source type and a given supplier,

a calculation and algorithm system for calculating a total predicted energy demand dependent in part on an accumulated demand for the given energy source type and the given supplier, the calculation and algorithm system also for determining available energy source types, demands for the available energy source types and cost price of energy for the available energy source types, and

means for supplying energy to the power customer in accordance with the energy demand profile, customer-specified proportion of power demand, customer maximum cost price profile, calculated total predicted energy demand, available energy source types, demands for the available energy source types and cost price of energy for the available energy source types.

11. The system according to claim 10, further comprising:

calculation means and algorithm means to determine an optimal mix of power supplies from different energy source types to meet an accumulated total demand by means of a multidimensional root finding algorithm.

12. The system according to claim 10, further comprising:

a consumer demand profile provided accessible and configurable over the Internet by any of one or more power consumers.

13. The system according to claim 10, further comprising:

an intelligent control unit for a power consumer and comprising information about a measured consumption load of said power consumer.

14. The system according to claim 13, wherein the intelligent control unit is configured suitable to change a status of one or more part-loads by any of switching a part load on, off, activated at a scheduled time.

15. The system according to claim 10, wherein the system is configured to regulate one or more electrical power supplies in a part of a power generation, transmission and distribution network in order to meet a requirement dependent on a percentage of demand to be met from a given energy source type.

16. The system according to claim 10, wherein the system is configured to regulate one or more electrical loads in a part of a power generation, transmission and distribution network in order to meet a requirement dependent on a cost of electricity.

17. The system according to claim 10, wherein the system is configured to supervise and control management of electrical power demand in an electrical power distribution network.

18. The system according to claim 10, wherein the system is configured to utilize a process running on one or more computers to supervise, control, and manage electrical power demand in an electrical power distribution network.

19. A computer program product, comprising:

a computer readable medium; and

software code portions or computer program elements recorded on the computer readable medium and executable by a computer, a processor or a controller, to carry out a method comprising

providing a customer demand profile for one or more customers,

registering a customer-specified proportion of power demand to be supplied from a given energy source type and a given supplier,

registering a customer-specified maximum cost price profile,

calculating a total predicted energy demand dependent in part on an accumulated demand for the given energy source type and the given supplier,

determining available energy source types, demands for the available energy source types and cost price of energy for the available energy source types, and

supplying energy to the one or more customers based on the customer demand profile, customer-specified proportion of power demand, customer maximum cost price profile, calculated total predicted energy demand, available energy source types, demands for the available energy source types and cost price of energy for the available energy source types.