Electricity charge management apparatus and its recording medium

• US 20030158631A1
• Filed: 09/06/2002
• Published: 08/21/2003
• Est. Priority Date: 03/10/2000
• Status: Abandoned Application

• Current Assignee: Mark.Tech Co., Ltd.
• Original Assignee: Mark.Tech Co., Ltd.
• Inventors: Masuda, Yoshinobu, Sasaki, Jo
• Application Number:
  US10/221,006
• Publication Number:
  US 20030158631A1
• Time in Patent Office: Days
• US Class Current: 700/286
• 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: 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

Abstract

In addition to a dissociation ratio being calculated with a load pattern recognition unit 3 based on sample data of the amount of electrical power in an electrical power load accumulated in a sample data accumulation unit 2, adjusted electrical power and a target coefficient are calculated with an adjusted electrical power arithmetic processing unit 5 and a target coefficient arithmetic processing unit 7. In addition, a demand period target value arithmetic processing unit 8 calculates a target value of the amount of electrical power used by an electrical power load for each demand period based on the dissociation ratio, adjusted electrical power and target coefficient. The amount of electrical power used by the electrical power load is then controlled by a demand control unit 9 and load control unit 10 based on this target value.

Claims

1. (Amended) An electricity charge management apparatus, comprising:

a setting means that sets a target value of an amount of electrical power used during a prescribed time period by an electrical power load,

a used electrical power accumulation means that accumulates the value of the amount of electrical power used in a unit time obtained by fractionating said prescribed time period by said electrical power load,

a dissociation ratio calculation means that calculates a dissociation ratio, which is the ratio of the target amount of electrical power during each unit time to the average amount of electrical power used of the unit time, based on said target value of the amount of electrical power used during said prescribed time period and the value of the amount of electrical power used during each said unit time,

a unit time target value arithmetic processing means that calculates the target value of the amount of electrical power used for each unit time based on the target value of the amount of electrical power used during said prescribed time period, the amount of electrical power used of each unit time, and said dissociation ratio, and

a load control means that controls the amount of electrical power used by said electrical power load based on said calculated target value of the amount of electrical power used during each unit time.

3. The electricity charge management apparatus according to claim 1, further comprises:

a used electrical power prediction means that predicts the amount of electrical power used during said prescribed time period by said electrical power load based on the value of the amount of electrical power used during each said unit time, and

an adjusted electrical power calculation means that calculates the adjusted amount of electrical power based on the difference between said predicted amount of electrical power used and said target value of the amount of electrical power used during said prescribed time period, and the remaining electrical power adjustment time, wherein

said unit time target value arithmetic processing means calculates the target value of the amount of electrical power used during each unit time while considering said adjusted amount of electrical power.

4. The electricity charge management apparatus according to claim 1, wherein,

a coefficient that considers the environmental conditions of the facility is additionally set in said setting means, and said unit time target value arithmetic processing means calculates the target value of the amount of electrical power used during each unit time based on the target value of the amount of electrical power used during said prescribed time period, the amount of electrical power used during each unit time, and said coefficient that considers the environmental conditions of the facility, and

said electricity charge management apparatus further comprises:

a load control means that controls the amount of electrical power used by said electrical power load based on said calculated target value of the amount of electrical power used during each unit time.

5. The electricity charge management apparatus according to claim 4, further comprises:

a limiting condition setting means that sets limiting conditions consisting of the upper and lower limit values of said coefficient that considers the environmental conditions of the facility, and the status in said installed facility corresponding to said upper and lower limit values, and

a coefficient calculation means that calculates said coefficient that considers the environmental conditions of the facility corresponding to the status as detected by a detection means that detects the status in the installed facility of said electrical power load, wherein

the coefficient calculated by said coefficient calculation means is set as a coefficient that considers the environmental conditions of the facility.

6. (Amended) The electricity charge management apparatus according to any of claims 1 or 3 through 5, further comprises:

a specific electrical power load setting means that sets an interruption ratio that represents the ratio at which supplied electrical power can be interrupted according to a specific electrical power load among said electrical power load,

a specific electrical power load electrical power accumulation means that accumulates the value of the amount of electrical power used during each unit time by said specific electrical power load, and

an interruptible electrical power arithmetic processing means that predicts the amount of electrical power used during said prescribed time period by said specific electrical power load by using the value of the amount of electrical power accumulated in said specific electrical power load electrical power accumulation means, and calculates the interruptible amount of electrical power for which electrical power supplied to said specific electrical power load can be interrupted from the current time until expiration of a prescribed time period based on said predicted amount of electrical power used and said interruption ratio, while additionally judging whether or not electrical power adjustment has reached a threshold by using said interruptible amount of electrical power, and generating a warning in the case the threshold is judged to have been reached.

7. (Amended) The electricity charge management apparatus according to any of claims 1, and 3 through 6 wherein,

in the case long-term electricity charge has been set for said target value, said electricity charge is assigned to each prescribed time period in said prescribed time period units, and the target value of the electricity charge of each said assigned prescribed time period is converted to an amount of electrical power after which the amount of electrical power used by said electrical power load is controlled based on said converted amount of electrical power.

8. A monitoring apparatus that manages a plurality of the electricity charge management apparatuses according to claim 6, comprising:

a means of assigning a target value of a prescribed time period to each electricity charge management apparatus in accordance with a preset distribution ratio by setting a target value of a prescribed time period that summarizes each target value set in the plurality of electricity charge management apparatuses, and

a means of changing said distribution ratio based on each predicted amount of electrical power predicted by said plurality of electricity charge management apparatuses, each interruptible amount of electrical power calculated by said plurality of electricity charge management apparatuses, and each target value of said prescribed time period.

9. An electricity charge management system comprised by:

a plurality of the electricity charge management apparatuses according to claim 6, a plurality of monitoring apparatuses that manage said plurality of electricity charge management apparatuses, and a general monitoring apparatus that summarily manages said plurality of monitoring apparatuses, wherein

said monitoring apparatuses comprise;

a means of assigning a target value of a prescribed time period that summarizes each target value set in the plurality of electricity charge management apparatuses to be monitored, that is assigned to each electricity charge management apparatus in accordance with a preset distribution ratio by setting a target value of a prescribed time period assigned by said general monitoring apparatus, and

a means of changing said distribution ratio based on each predicted amount of electrical power predicted by said plurality of electricity charge management apparatuses to be monitored, each interruptible amount of electrical power calculated by said plurality of electricity charge management apparatuses, and each target value of said prescribed time period; and

,

said general monitoring apparatus comprises;

a means of assigning a target value of a prescribed time period to each monitoring apparatus in accordance with a preset distribution ratio by setting a target value of a prescribed time period that summarizes each target value set with said plurality of monitoring apparatuses, and

a means of changing said distribution ratio for each monitoring apparatus based on the predicted amount of electrical power and each interruptible amount of electrical power sent from said plurality of monitoring apparatuses, and each target value of a prescribed time period that summarizes each target value set with said plurality of monitoring apparatuses;

wherein,

said plurality of electricity charge management apparatuses, said plurality of monitoring apparatuses and said general monitoring apparatus are connected so as to be able to communicate.

2. (Deleted)

10. (Amended) A computer-readable recording medium on which an electricity charge management program has been recorded that manages electricity charges according to the amount of electrical power used during a prescribed time period by an electrical power load;

wherein,

said electricity charge management program runs in a computer;

a step for accumulating the value of the amount of electrical power used in a unit time obtained by fractionating said prescribed time period by said electrical power load,

a step for calculating a dissociation ratio, which is the ratio of the target amount of electrical power during each unit time to the average amount of electrical power used of the unit time, based on said target value of the amount of electrical power used during said prescribed time period and the value of the amount of electrical power used during each said unit time,

a step for calculating the target value of the amount of electrical power used during each unit time based on a preset target value of the amount of electrical power used during said prescribed time period, the amount of electrical power used during each unit time, and said dissociation ratio, and

a step for controlling the amount of electrical power used by said electrical power load based on said calculated target value of the amount of electrical power used during each unit time.

11. (Amended) An electricity charge management program recorded on a computer-readable recording medium that manages electricity charges according to the amount of electrical power used during a prescribed time period by an electrical power load;

wherein,

said program is for running in a computer;

a step for accumulating the value of the amount of electrical power used in a unit time obtained by fractionating said prescribed time period by said electrical power load,

a step for calculating a dissociation ratio, which is the ratio of the target amount of electrical power during each unit time to the average amount of electrical power used of the unit time, based on said target value of the amount of electrical power used during said prescribed time period and the value of the amount of electrical power used during each said unit time,

a step for calculating the target value of the amount of electrical power used during each unit time based on a preset target value of the amount of electrical power used during said prescribed time period, the amount of electrical power used during each unit time, and said dissociation ratio, and

a step for controlling the amount of electrical power used by said electrical power load based on said calculated target value of the amount of electrical power used during each unit time.