JP5219754B2 - Power reserve power supply device - Google Patents

Power reserve power supply device Download PDF

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JP5219754B2
JP5219754B2 JP2008292438A JP2008292438A JP5219754B2 JP 5219754 B2 JP5219754 B2 JP 5219754B2 JP 2008292438 A JP2008292438 A JP 2008292438A JP 2008292438 A JP2008292438 A JP 2008292438A JP 5219754 B2 JP5219754 B2 JP 5219754B2
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power
reserve
device
amount
bid
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JP2010119269A (en
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正展 古塩
佳尚 岡崎
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三菱電機株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S50/00Market activities related to the operation of systems integrating technologies related to power network operation or related to communication or information technologies
    • Y04S50/10Energy trading, including energy flowing from end-user application to grid

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reserve electric power supply system which provides an intensive consumer, who collectively purchases electric power from power suppliers and then supplies electric power to a plurality of individual consumers, with an incentive to actively trade an equipment use right to reduce power consumption. <P>SOLUTION: The reserve electric power supply system calculates an estimated value of power consumption of a load from an actually consumed value, calculates an estimated value of operation time from an actual operation time, and calculates a controllable amount of equipment based on an equipment use right and a cost to purchase the equipment use right. The system receives information about bidding for purchasing a reserve power, and calculates a reserve power generated by purchasing the equipment use right for a desired time zone and a bid price and provides the reserve power and the bid price to power suppliers. When the power suppliers purchase the reserve power, the system informs the power suppliers that the equipment use right is purchased, and calculates total amounts of power consumption of all the individual consumers 2a, 2b, and 2c, and controls equipment of the equipment use right thus purchased so that an amount of power consumption per predetermined time period may be a target amount of power or below. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a power reserve power supply device that supplies reserve power to a power supplier by performing purchase and control of device usage rights of individual consumer side devices.

  Conventionally, the power supply / demand balance between the power supply amount and the power consumption amount is maintained, and the amount paid for the power supply / demand imbalance on the day is reduced (for example, see Patent Document 1). In this system, the power supply / demand imbalance is suppressed by adjusting at least one of the power supply amount and the power consumption amount, and the amount paid to the power supplier is reduced.

  In addition, when a power consumer makes a power purchase contract with a power supplier, it can respond by changing the power purchase plan for the next month, the power purchase plan for the next day, and the power purchase plan a few hours later on the day at the shortest. (For example, refer to Patent Document 2). In this system, the change of conditions is not allowed after the final change, and the one-on-one transaction between the customer and the power supplier is clarified by the restriction of this time zone.

JP 2002-78198 A JP 2004-88847 A

  In the conventional system as described above, the purpose is to maintain the power supply / demand balance between the power supply amount and the power consumption amount, and it is necessary for the power supplier side to secure all the reserve capacity for ensuring the same amount simultaneously. It was. For this reason, there existed a problem that a generator was drive | operated with an inefficient output and the amount of capital investment increased.

  Moreover, since the merits of conventional power consumers occur only when the power consumption is actually reduced, from the standpoint of an aggregate consumer that purchases power from power suppliers and supplies it to multiple individual consumers, Incentives to buy and sell equipment usage rights to reduce power consumption were difficult to work.

  An object of the present invention is to provide an electric power reserve power supply that facilitates an incentive to buy and sell equipment use rights for reducing the power consumption to an aggregate consumer who purchases electric power from a power supplier and supplies it to a plurality of individual consumers. Is to provide a device.

  In the power reserve power supply device according to the present invention, an aggregate consumer that sells power purchased collectively from a power supplier to a plurality of individual consumers supplies reserve power to the power supplier, and the aggregate consumer A power reserve power supply device for setting a device usage right for each predetermined time unit that allows the aggregated consumer to control the device possessed by the individual customer by paying consideration to the individual customer, Control from a load prediction unit that calculates a load prediction value on the control day from a load actual value consumed for a predetermined period for each individual consumer, and an operation actual value operated for a predetermined period for each individual consumer device The operation prediction unit for calculating the operation prediction value for the day, and the controllable amount and the cost for calculating the controllable amount and the cost for purchasing the device use right based on the device use right for the control day bid by the individual consumer. Calculation And the information regarding the bid for reserve power purchase from the power supplier, and calculate the reserve power and bid amount generated by purchasing the right to use the equipment in the time zone when the power supplier desires to purchase. Bid condition calculation unit, bidding unit that bids the reserve power and the bid amount to the power supplier, and purchases the right to use the equipment when the power supplier purchases the reserve power bid by the bid unit And a predetermined time obtained from the measured value of the total integrated power consumption unit, the total integrated power consumption unit that sums up the power consumption of all the individual consumers, A device control unit that controls the device that has purchased the device usage right so that the unit power consumption is equal to or less than the target power amount obtained from the contract power and the reserve power sold to the power supplier.

  In the power reserve device according to the present invention, the aggregate customer purchases the right to use the equipment from the individual customer and provides the reserve to the power supplier, so that the reserve is provided at a cheap electricity rate. Since the used electric power can be purchased, there is an effect that it is possible to secure the necessary resources for purchasing the right to use the device.

A power reserve supply device (hereinafter simply referred to as “power reserve power supply device of the present invention”) according to the best mode for carrying out the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is a diagram showing a configuration of a power reserve power supply system provided with a power reserve power supply device of the present invention. In the following, in each figure, the same reference numerals and symbols indicate the same or corresponding parts.

  1, a power reserve power supply system according to the present invention includes a server (parent device) 100 including a storage device capable of storing a database, a total integrated watt-hour meter 101 connected to a power supply facility through a power line L1, and a server. A controller (terminal) 102 such as a personal computer (PC) or a home controller connected to 100 via a communication line (network) L3 such as a LAN, a controller 103, a controller 104, and a total integrated wattmeter 101 with a power line L1 An integrated watt-hour meter 105 connected through the network, an integrated watt-hour meter 106, an integrated watt-hour meter 107, and an air conditioner (equipment) 110 connected to the server 100 via a communication line (network) L2 such as a LAN. Also, air conditioner (equipment) 111, water heater (equipment) 112, And the axial air-conditioning equipment (equipment) 113 is provided.

  Note that the parent device is not limited to the server 100, and a personal computer or a dedicated control device having a communication function and various processing functions may be used. The terminal is not limited to a personal computer or a home controller, and may be a dedicated terminal having a communication function or a display function, or a mobile phone. The total integrated watt-hour meter 101 measures the total power consumption of all the integrated watt-hour meters 105, 106, and 107.

  The power line L1 is connected between the power supply facility of the power supplier and the total integrated watt-hour meter 101. The power line L1 is connected between the total integrated watt hour meter 101 and the controller 102, the integrated watt hour meter 105, and the device 110, and the total integrated watt hour meter 101 and the controller 103, the integrated watt hour meter 106, the device 111, and the device. 112 is connected between the total integrated watt-hour meter 101 and the controller 104, the integrated watt-hour meter 107, and the device 113.

  The communication line L2 transmits measurement information such as power consumption and control information such as a control command for suppressing power consumption online (ON-LINE). Connected between. The communication line L2 is connected between the server 100, the integrated watt-hour meter 105, and the device 110, and is connected between the server 100, the integrated watt-hour meter 106, the device 111, and the device 112, and the server 100 and the integrated watt-hour amount. A total of 107 is connected between the devices 113.

  The communication line L3 transmits information such as bid information related to the right to use the device offline (OFF-LINE), and is connected between the server 100, the controller 102, the controller 103, and the controller 104. Here, “equipment usage right” means that the server (aggregate consumer) permits the device (aggregate consumer) to control the device that consumes the electric power held by the individual consumer, and the server (aggregate consumer) responds to the permission. It pays to the controller (individual consumer). Note that power line carrier communication (PLC) using the power line L1 or wireless communication may be used instead of the communication line L2 and the communication line L3.

  A power supply facility such as a power plant belongs to a power supplier. Moreover, the server 100 and the total integrated electricity meter 101 belong to an aggregate consumer. The controller 102, the integrated watt-hour meter 105, and the air conditioner 110 belong to the individual consumer A. The controller 103, the integrated watt-hour meter 106, the air conditioner 111, and the water heater 112 belong to the individual consumer B. The controller 104, the integrated watt-hour meter 107, and the air conditioner 113 belong to the individual customer C.

  A power retailer (PPS) corresponds to the power supplier. In addition, building managers, condominium management associations, and community associations are examples of aggregated consumers, and individual consumers are tenants (stores) who are occupying buildings and general residents. This applies to households. Therefore, the number of individual consumers is not limited to three.

Next, the operation of the power reserve power supply system of the present invention will be described with reference to the drawings.
FIG. 2 is a diagram for explaining a device use right used in the power reserve power supply system of the present invention. In the figure, “R” in circles represents the right to use the device, and “M” in circles represents an integrated watt-hour meter.

  In FIG. 2, the power supplier 3 supplies power to the aggregate customer 1 and does not directly supply power to the individual customer A2a, the individual customer B2b, and the individual customer C2c. The aggregate customer 1 supplies power to the individual customer A2a, the individual customer B2b, and the individual customer C2c. The individual customer A2a, the individual customer B2b, and the individual customer C2c pay the power usage fee to the aggregate customer 1, and the aggregate customer 1 pays the power usage fee to the power supplier 3.

  The individual customer A2a has a device usage right 201 that can be bought and sold that is linked to the device 110 that the customer A2a owns, and buys and sells the device usage right 201 with the aggregate customer 1. Further, the individual customer B2b has a device usage right 202 and a device usage right 203 associated with the device 111 and the device 112 that the individual customer B2b has, and the device usage right 202 and 203 with the aggregated customer 1. Buy and sell. Similarly, the individual customer C <b> 2 c has a device usage right 204 that can be bought and sold that is linked to the device 113 that the individual customer C <b> 2 c has, and buys and sells the device usage right 204 with the aggregate customer 1.

  FIG. 3 is a diagram showing a device usage right bid display table displayed on the controller of the power reserve power supply system of the present invention. In FIG. 3, the period from 00:00 to 01:00, the period from 10:00 to 13:30, and the period from 23:00 to 24:00 (00:00) The case of being a target is shown, and a time zone of 30 minutes is expressed at the end of the period. For example, “00:30” means a 30-minute time slot from 00:00 to 00:30. In FIG. 3, each time zone is displayed so that the difference in the status of the device usage right can be understood. In this embodiment, the time zone as a processing unit is set to 30 minutes, but is not limited to 30 minutes, and may be 15 minutes or 1 hour.

FIG. 4 is a flowchart showing the operation of the server and controller of the power reserve power supply system of the present invention.
Since a large number of air conditioners (air conditioners) are installed and the overall power consumption can be suppressed by controlling the air conditioners, the air conditioners will be mainly described as the devices.

  In step S201, each controller transmits bid information for one day of the next day for each device, which is input by an operation of an individual consumer, to the server 100 once a day (in the following description, wireless etc. are also used). (Since it is possible, description about a communication medium is abbreviate | omitted, and it describes only transmitting and receiving).

  The controllers 102, 103, and 104 generate device use right transfer prices and desired discount rates at the time of control as bid information. The device usage right transfer price includes an individual customer ID, a device ID, a date, a time zone, and a bid price. Further, the desired discount rate at the time of execution of control is composed of individual customer ID, device ID, date, time zone, and discount rate.

  The individual customer ID is information for identifying an individual customer. The device ID is information for identifying the device. The date is the date of the next day. The time zone indicates which 30 minute unit from 00:00 to 24:00. The bid price is a bid price (yen) for transferring the right to use the device. The discount rate is a discount rate of the power usage fee.

  The controllers 102, 103, and 104 exclude each device (Mi (i) from the one day (00:00 to 24:00) of the next day except for a time zone that is not subject to device usage right bidding (not specifically described below). = 1 to 3)) for 30 minutes (Tn (n = 1 to 11)) (00: 00 to 00:30, 00:30 to 01:00, ...) bids for equipment usage rights 201 to 204 Send the price (yen).

In step S101, the server 100 obtains a predicted load value from a past actual load value (load predictor), for example, once a day, and obtains a predicted operation value from a past actual drive value (operation predictor).
The server 100 calculates | requires load prediction value (Tn) (bar graph for every 30 minutes) using the past load actual value (Tn) which is not performing load control for every individual consumer. The predicted load value is the amount of power used (consumed) (kWh), which is the average of actual load values in a predetermined period in the past, and is obtained in units of 30 minutes.
Moreover, the server 100 calculates | requires a driving | operation estimated value (Mi, Tn) for every apparatus (Mi) using the past driving | operation actual value (Mi, Tn) which is not controlling. The predicted operation value is a usage time rate (%), which is an average of actual operation values within a predetermined period in the past, and is obtained in units of 30 minutes.

In step S102, the server 100 obtains a controllable amount and a cost to be incurred when purchasing a device usage right (controllable amount and cost calculation unit).
For each device (Mi), the server 100 obtains the controllable amount from the equation (1) in units of 30 minutes using the known rated load of the device (Mi) and the predicted operation value (Mi, Tn). In addition, the laying (1) agrees that the device that sold the device usage right may not be used at all during the time when the device usage right is sold, and the individual customer sells the device usage right. It is assumed that.

    Controllable amount = Rated load x Operation predicted value (1)

  Further, the server 100 obtains a predicted return fee Pt (Mi, Tn) from the equation (2) using the bid information and the predicted driving value received from each controller.

    Predicted reduction fee Pt (Mi, Tn) = reduction fee Pa (Mi, Tn) + predicted operation value (Mi, Tn) × reduction fee Pb (Mi, Tn) (2)

  Here, the return charge Pa (Mi, Tn) is the bid price, and the return charge Pb (Mi, Tn) is Pb (Mi, Tn) = discount rate (Mi) × the amount of power used at the rated output Wh (power used W) Conversion value) × electricity charge (unit price for each used electric energy Wh).

  Next, the server 100 creates a predicted return charge table in which the predicted return charges Pt (Mi, Tn) are arranged in ascending order and registers them in the database. In order to simplify the description, it is assumed that predicted return charges Pt corresponding to the devices 110, 113, 111, and 112 are arranged in ascending order.

  In step S <b> 103, the server 100 obtains information regarding the reserve power purchase for the next day that is transmitted from the power supplier. The information on the reserve power purchase for the next day includes the time zone when the reserve power is scheduled to be purchased and the discount rate of the electricity charge. The power supplier predicts the next day's power demand, finds the time when spare capacity must be purchased and the reserve capacity to purchase, and further purchases the reserve capacity, that is, the discount rate of the electricity rate (yen / kWh) (Bid condition calculation part).

In step S104, the server 100 determines whether or not reserve power can be bid for the power supplier. When reserve capacity cannot be bid, the reserve capacity provision procedure is terminated. When it is determined that the reserve power can be bid, the process proceeds to step S105.
The server 100 integrates the predicted load amount of individual customers in the time zone for which the reserve power for the next day is to be bid, and estimates the load load amount for the time zone in which the reserve power for the next day as an aggregate customer is to be bid (the aggregate load). (Referred to as predicted amount). Next, it is determined whether or not the reserve capacity can be bid by comparing the aggregate load prediction amount with the contract power amount. In order to ensure safety, a value that is larger by several percent to tens of percent of the aggregate load prediction amount is adopted as the aggregate load prediction value in consideration of safety so that the penalty does not occur because the power consumption amount exceeds the contract power amount. Note that the contract power means a load curve agreed between the power supplier and the aggregate customer by the day of control (the upper limit of power consumption is defined for each predetermined time unit).

  When the aggregate load forecast amount exceeds the contracted power amount, the device use right is charged until the value obtained by subtracting the controllable amount of the device that purchased the device use right from the aggregate load forecast amount is equal to or less than the contract power amount. Purchase in order starting with the smallest device. When there is a device usage right that has not been purchased so far, the device usage right is purchased and a bid is made as a reserve. In addition, as a bid for reserve capacity, the cost for purchasing equipment usage rights purchased after the value obtained by subtracting the controllable amount of equipment that purchased equipment usage rights from the aggregate load prediction amount is less than or equal to the contracted power consumption is prescribed. It is set as the value which added the expense of. Note that the method of calculating the bid amount is not limited to this, and may be determined in consideration of the amount of reduction in the power cost of the predicted load amount by the contract fee discount rate.

  Further, when the aggregate load prediction amount is equal to or less than the contracted power amount, the bid for using the bid for equipment is purchased and bid as a reserve. Further, a value obtained by adding a predetermined cost to the cost related to the purchase of the device usage right purchased as a reserve price bid. Note that the method of calculating the bid amount is not limited to this, and may be determined in consideration of the amount of reduction in the power cost of the predicted load amount by the contract fee discount rate.

  In step S105, the server 100 sends the reserve capacity and the bid price to the power supplier supply and demand planning system of the power supplier and makes a bid. The procedure of steps S104 and S105 is the procedure of the bidding section.

In the power supplier supply and demand planning system of the power supplier, the reserve power and the bid amount bid from the aggregate customer or the individual customer who is supplying power are examined, and the purchase of the equipment use right is determined. The reserve power determined to be purchased is communicated to an aggregate customer or an individual customer.
In step S <b> 106, the server 100 confirms whether or not reserve power has been purchased. If there is no purchase, the server 100 ends the reserve power supply procedure for the next day, and if there is purchase, proceeds to step S <b> 107.
In step S <b> 107, the server 100 determines the device usage right and notifies the individual customer who owns the device that the device usage right has been purchased (device usage right purchasing unit).
In step S202, a notification of purchase of the device usage right from the server 100 is received.

FIG. 5 is a flowchart showing a load control procedure in the server of the power reserve power supply system of the present invention. This load control procedure is a procedure for reducing power consumption by controlling a device for which a device usage right has been purchased in order to generate reserve power. The target power consumption is a value obtained by subtracting the reserve power from the contract power, and is hereinafter referred to as a target power.
In step S <b> 111, for example, the server 100 acquires the device operation results every 30 seconds and collects the load results from the integrated watt hour meter for each individual customer.

  The server 100 acquires an operation result value (date, time, device ID, ON / OFF, air conditioning set temperature, air conditioning setting mode, water heater reheating mode, etc.) from each device (Mi). Moreover, electric energy information (kWh / 30 seconds) is acquired from the integrated electric energy meters 105, 106, and 107 for each individual customer.

  Next, in step S112, the server 100 calculates a control amount for load suppression from the actual load value and the target power amount. In addition, the procedure of step S111-step S112 is a procedure of a total integrated electric energy part.

  The server 100 aggregates (adds) the power amount information for each individual consumer, and calculates the amount of power used per unit measurement period unit time (30 seconds). Further, the power consumption is integrated to calculate the total power consumption (load actual value) for 30 minutes, and then the control power is calculated by subtracting the target power amount for the time period from the load actual value.

  Next, in step S113, the server 100 determines whether control is necessary based on the calculated control amount. If the control amount is a positive value, it is determined that control is necessary, and the process proceeds to the next step S114. If the control amount is negative or zero, it is determined that control is not necessary, and the load control procedure is terminated.

  Next, in step S114, the server 100 refers to the predicted return charge table determined at the next day plan (previous day).

  Next, in step S115, the server 100 performs control in the order of devices with the lowest expected return charges.

  The server 100 is set as a control target from a device with a higher rank until the difference between the calculated actual load value and the predicted load value becomes zero or less according to the priority table. The server 100 transmits a control command to the device that is the control target. Thereafter, the control execution information is registered in the database.

  In step S <b> 116, the server 100 transmits that the control is being performed to the controller during the control. The procedure from step S113 to step S116 is the procedure of the device control unit.

In this way, the aggregate customer can purchase the power used during the time period when the reserve was provided at a low electricity rate by purchasing the equipment usage right from the individual customer and providing the reserve with the power supplier. As a result, it is possible to secure the necessary resources to purchase the right to use the device.
In addition, since the power supplier can purchase reserve power obtained by purchasing equipment usage rights from an aggregate consumer, it is possible to diversify reserve power procurement sources.

It is a figure which shows the structure of the electric power reserve power supply system of this invention. It is a figure for demonstrating the equipment utilization right of the power reserve power supply system of this invention. It is a figure which shows the apparatus utilization right trading display table displayed on the controller of the power reserve power supply system of this invention. It is a flowchart which shows the procedure regarding the bid of reserve power in the electric power reserve power supply system of this invention. It is a flowchart which shows the procedure which produces | generates the reserve power using the apparatus utilization right in the electric power reserve power supply system of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Aggregate consumer, 2a, 2b, 2c Individual consumer, 3 Electric power supplier, 100 server, 101 Total integrated watt-hour meter, 102, 103, 104 Controller, 105, 106, 107 Integrated watt-hour meter, 110, 111, 113 equipment (air-conditioning equipment), 112 equipment (water heater), 201, 202, 203, 204 Right to use equipment, L1 power line, L2, L3 communication line.

Claims (1)

  1. An aggregate customer who sells power purchased in bulk from a power supplier to a plurality of individual customers supplies reserve power to the power supplier, and the aggregate customer pays the individual consumer to pay the individual It is a power reserve power supply device that sets a device usage right that allows the aggregate consumer to control the device possessed by the consumer for each predetermined time unit,
    A load prediction unit that calculates a load prediction value on the control day from a load actual value consumed for a predetermined period for each individual consumer;
    An operation prediction unit that calculates an operation predicted value on the control day from an operation result value operated for a predetermined period for each individual consumer device,
    A controllable amount and cost calculating unit for calculating a controllable amount and a cost for purchasing the device use right based on the device use right on the day of control bid by the individual consumer;
    Bid condition calculation that receives information on tender for reserve power purchase from the power supplier and calculates reserve power and bid amount generated by purchasing the right to use the equipment in the time zone when the power supplier wishes to purchase And
    A bid department for bidding the reserve power and the bid amount to the power supplier;
    When the power supplier purchases reserve power bid by the bidding department, the equipment usage right purchasing department that purchases the equipment usage right and contacts the individual consumer;
    A total integrated energy unit that sums up the power usage of all the above individual consumers,
    Purchase the right to use the equipment so that the power consumption per unit time determined from the measured value of the total integrated power consumption is less than or equal to the target power calculated from the contract power and reserve power sold to the power supplier. A device control unit for controlling the device,
    A power reserve power supply device comprising:
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EP2486707A4 (en) 2009-10-09 2013-08-28 Consert Inc Apparatus and method for controlling communications to and from utility service points
US8527107B2 (en) 2007-08-28 2013-09-03 Consert Inc. Method and apparatus for effecting controlled restart of electrical servcie with a utility service area
US7715951B2 (en) 2007-08-28 2010-05-11 Consert, Inc. System and method for managing consumption of power supplied by an electric utility
US8700187B2 (en) 2007-08-28 2014-04-15 Consert Inc. Method and apparatus for actively managing consumption of electric power supplied by one or more electric utilities
US8996183B2 (en) 2007-08-28 2015-03-31 Consert Inc. System and method for estimating and providing dispatchable operating reserve energy capacity through use of active load management
CA2761038C (en) 2009-05-08 2015-12-08 Consert Inc. System and method for estimating and providing dispatchable operating reserve energy capacity through use of active load management
JP5487125B2 (en) * 2011-01-11 2014-05-07 株式会社東芝 Power supply / demand adjustment reserve capacity trading system and power supply / demand adjustment reserve capacity transaction method
JP5679847B2 (en) * 2011-02-04 2015-03-04 株式会社東芝 Energy management system and energy management method
CA2860743C (en) * 2012-02-02 2017-11-14 Hitachi, Ltd. Power demand adjustment system and power demand adjustment method
JP2013174421A (en) * 2012-02-27 2013-09-05 Daikin Industries Ltd Heat pump apparatus energy management device
WO2014132369A1 (en) * 2013-02-27 2014-09-04 株式会社日立製作所 Demand response plan preparation system and demand response plan preparation method

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JP3362055B2 (en) * 1992-03-30 2003-01-07 三菱電機株式会社 Power distribution control system
JP2005292984A (en) * 2004-03-31 2005-10-20 Osaka Gas Co Ltd Power receiving right trading support system
JP2006268342A (en) * 2005-03-23 2006-10-05 Tokyo Electric Power Co Inc:The Cut power bid system and method
JP4799517B2 (en) * 2007-09-26 2011-10-26 三菱電機株式会社 Power supply service provision system

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