Electric-power management system, electric-power management method, and section controller

Patent metadata

Field	Value
Publication number	US-9395741-B2
Application number	US-201113640642-A
Country	US
Kind code	B2
Filing date	Mar 16, 2011
Priority date	Apr 12, 2010
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

Electric-power management system, an area controller transmits, to each of section controllers, information about a target voltage and information about the present voltage, each of the section controllers calculating a difference between the target voltage and the present voltage, received from the area controller, and calculating a power's demand-supply-adjustment request amount based on difference between the information about the voltages, each of facility-equipment controllers transmitting power-reception/power-release capable equipment information to each section controller, being information about a power-reception/power-release capable equipment in a facility into which the facility-equipment controller is installed, the section controller, based on the power-reception/power-release capable equipment information about the equipment, transmitting the equipment's demand-supply-adjustment request amount and the facility-equipment controller transmitting a control signal to the equipment based on the equipment's demand-supply-adjustment request amount received from the section controller to the facility-equipment controller in the facility.

First claim

The invention claimed is:

1. An electric-power management system, comprising:
each of facility-equipment controllers installed into facilities on each facility basis, and managing a single equipment or a plurality of equipments in each of said facilities;
each of section controllers for controlling each of said facility-equipment controllers; and
an area controller for controlling each of said section controllers, wherein
said area controller comprises a communications unit for transmitting information to each of said section controllers, said information indicating a target value about electric power and a current-state value about said electric power,
each of said section controllers, comprising:
a reception unit for receiving power-reception/power-release capable equipment information from each of said facility-equipment controllers as information about a power amount whose power-reception/power-release is capable of being performed by a facility into which said facility-equipment controller is installed;
a demand-supply-adjustment-request amount calculation unit for calculating a difference value between said target value and said current-state value, and, based on said difference value, calculating a demand-supply-adjustment request amount for said electric power; and
a transmission unit for transmitting, based on said power-reception/power-release capable equipment information, said demand-supply-adjustment request amount to said facility-equipment controller, said power-reception/power-release capable equipment information having been transmitted from said facility-equipment controller, said power-reception/power-release of said demand-supply-adjustment request amount being capable of being performed in said facility into which said facility-equipment controller is provided,
said facility-equipment controller, based on said demand-supply-adjustment request amount, transmitting a control signal to said single equipment or said plurality of equipments, said demand-supply-adjustment request amount being received from said section controller.

2. An electric-power management system, comprising:
each of section controllers for controlling electric power in a plurality of facilities;
an area controller for controlling each of said section controllers; and
each of facility-equipment controllers installed into said facilities on each facility basis, and managing a single equipment or a plurality of equipments in each of said facilities, wherein
said area controller transmits information to each of said section controllers, said information indicating a target value about said electric power and a current-state value about said electric power,
each of said section controllers calculating a difference value between said target value and said current-state value, and, based on said difference value, calculating a demand-supply-adjustment request amount for said electric power,
each of said facility-equipment controllers transmitting power-reception/power-release capable equipment information to each section controller, said power-reception/power-release capable equipment information being information about power-reception/power-release capable equipments in a facility into which said facility-equipment controller is installed,
said section controller, based on said power-reception/power-release capable equipment information, transmitting said demand-supply-adjustment request amount for said power-reception/power-release capable equipments to said facility-equipment controller in said facility into which said power-reception/power-release capable equipments are installed, and
said facility-equipment controller, based on said demand-supply-adjustment request amount for said equipments, transmitting a control signal to said single equipment or said plurality of equipments, said demand-supply-adjustment request amount being received by said facility-equipment controller from said section controller.

3. The electric-power management system according to claim 1 , wherein
said current-state value is a current-state voltage value, said target value being a target voltage value,
said section controller transmitting a power-consumption amount to said facility-equipment controller as said demand-supply-adjustment request amount, if said current-state voltage value is higher than said target voltage value,
said section controller transmitting a power-release amount to said facility-equipment controller as said demand-supply-adjustment request amount, if said current-state voltage value is lower than said target voltage value.

4. The electric-power management system according to claim 1 , wherein
said power-reception/power-release capable equipment information includes said information indicating said power-reception/power-release capable equipments, and information indicating a power-consumption amount or a power-release amount whose power-reception/power-release is capable of being performed by said equipments.

5. The electric-power management system according to claim 1 , wherein
said section controller, based on said power-reception/power-release capable equipment information, calculating an operation order of said equipments,
said section controller then, based on said operation order, transmitting said demand-supply-adjustment request amount for said equipments to said facility-equipment controller.

6. The electric-power management system according to claim 5 , wherein
said operation order of said equipments is determined in a manner of being distributed into said plurality of facilities.

7. The electric-power management system according to claim 1 , wherein
said current-state value is a current-state voltage value, said target value being a target voltage value.

8. The electric-power management system according to claim 1 , wherein
said section controller calculates said demand-supply-adjustment request amount,
said section controller then dividing and allocating said demand-supply-adjustment request amount for said equipments to said power-reception/power-release capable equipments.

9. The electric-power management system according to claim 1 , wherein
said current-state value is a current-state voltage value, said target value being a target voltage value,
said area controller setting said target voltage value of said section controller and that of another section controller at lower values, if value of information about said electric power of said section controller falls above a predetermined reference value,
said area controller setting said target voltage value of said section controller and that of another section controller at higher values, if said value of said information about said electric power of said section controller falls below said predetermined reference value.

10. An electric-power management method in an electric-power management system,
said electric-power management system, comprising:
each of section controllers for controlling electric power in a plurality of facilities;
an area controller for controlling each of said section controllers; and
each of facility-equipment controllers installed into said facilities on each facility basis, and managing a single equipment or a plurality of equipments in each of said facilities,
said electric-power management method, comprising the steps of:
said area controller's transmitting a target value about said electric power to each of said section controllers;
each of said section controllers' calculating a difference value between a current-state value about said electric power and said target value received from said area controller, and, based on said difference value, calculating a demand-supply-adjustment request

Assignees

• Shiga Yasuko
• Watanabe Tohru
• Hirasawa Shigeki
• Wachi Isao
• Hitachi Ltd

Inventors

• Shiga Yasuko
• Watanabe Tohru
• Hirasawa Shigeki
• Wachi Isao

Classifications

• B60L53/53

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• B60L2260/54

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• Y02T90/14

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