JP2002245126A - Device, method and program for managing energy and computer readable recording medium with energy management program recorded thereon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate reduction of an expected environmental load. SOLUTION: An energy managing device is provided with a first means (S1) for receiving, in a prescribed term interval, the basic unit of an environmental load that occurs in generating energy, a means (S3) for deciding, in each prescribed term, an energy unit cost corresponding to the basic unit of the received environmental load, and a means for transmitting the decided energy unit cost through a network.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy management apparatus, an energy management method, an energy management program, and a computer-readable recording medium on which the energy management program is recorded. The present invention relates to a computer-readable recording medium recording a program and an energy management program.

[0002]

2. Description of the Related Art Since electric energy is generated and consumed simultaneously, demand forecasting techniques have been developed to supply electric energy in accordance with demand. Further, an energy saving system, an energy consumption adjusting system, a demand side management (DSM) system, and the like that reduce power consumption by performing demand control, peak shift, and the like have been proposed.

[0003]

However, the conventional system for energy saving reduces or shifts the amount of energy consumption in consideration of the factors on the energy demand side, and the energy consumption on the energy supplier side is reduced. It is not a system that considers factors. Therefore, carbon dioxide (C
O ₂ ), nitrogen oxides (NOX), sulfur oxides (SOX)
No effort has been made from the viewpoint of reducing the amount of environmental load, and the amount of environmental load cannot be sufficiently reduced.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an energy management apparatus, an energy management method, an energy management program, and an energy management method for promoting reduction of an environmental load that occurs. An object of the present invention is to provide a computer-readable recording medium recording an energy management program.

[0005]

According to one aspect of the present invention, in order to achieve the above object, an energy management device is capable of reducing a basic unit of an environmental load generated when energy is generated at predetermined time intervals. First receiving means for receiving (S1)
Determining means (S3) for determining an energy unit price according to the received basic unit of environmental load for each predetermined period; and transmitting means (S33) for transmitting the determined energy unit price via a network. .

According to the present invention, the basic unit of the environmental load generated at the time of generating energy is received at predetermined time intervals, and the energy unit price according to the received basic unit of the environmental load is determined every predetermined period. It is determined. For this reason, as the amount of environmental load increases, the energy unit price can be increased. In addition, since the determined energy unit price is transmitted via the network, the consumer can increase consumption during the period when the energy unit price is low, and can reduce consumption during the period when the energy unit price is high. As a result, it is possible to provide an energy management device that promotes a reduction in generated environmental load.

[0007] Preferably, the amount of used energy is received at intervals corresponding to a predetermined period, and a usage fee is calculated using the determined energy unit price and the received energy usage.

According to the present invention, since the usage fee is calculated using the energy unit price and the energy usage amount, the usage fee is calculated according to the unit of environmental load.

According to another aspect of the present invention, the energy management device is capable of supplying energy to the energy consuming means (125) consuming energy, and capable of storing a predetermined amount of energy. (1
27) an energy management device (100A) for creating a schedule for storing and releasing energy, wherein the energy consumption device predicts energy consumed in a predetermined period (S52);
An environmental load estimating means (S56) for estimating a basic unit of environmental load in a predetermined period; and an energy storage means for storing energy in the energy storing means based on the predicted energy consumption and the predicted basic unit of environmental load. A storage schedule creation unit (S58) for creating a schedule, and a release for creating a schedule for releasing energy stored in the energy storage unit based on the predicted energy consumption and the predicted basic unit of environmental load. A schedule creation means (S59).

According to the present invention, energy consumed in a predetermined period is predicted, and a basic unit of environmental load in the predetermined period is predicted. Then, a schedule for storing energy in the energy storage means is created based on the predicted energy consumption and the predicted basic unit of the environmental load, and the predicted energy consumption and the predicted environmental load source are calculated. A schedule for releasing the energy stored in the energy storage means is created based on the unit. For this reason, the schedule for storing energy in the energy storage means is a schedule for storing energy during a period when the environmental load is low, and the schedule for releasing energy stored in the energy storage means is a schedule for storing energy during a period when the environmental load is high. It is scheduled to be released. As a result, it is possible to provide an energy management device that promotes a reduction in generated environmental load.

Preferably, receiving means (S0) for receiving the amount of used energy at intervals corresponding to a predetermined period.
1) and storage means (S02) for storing the received energy usage. The energy prediction means predicts energy consumed using the stored energy usage.

According to the invention, the amount of energy used is received and stored at intervals corresponding to a predetermined period. The energy consumed is predicted using the stored energy usage. For this reason, the energy consumed in a predetermined period is predicted based on the past energy usage, so that the consumed energy can be accurately predicted.

[0013] Preferably, a receiving means (S03) for receiving a basic unit of the environmental load generated when energy is generated at predetermined time intervals, and a storage means (S02) for storing the received basic unit of the environmental load. The environmental load prediction means makes a prediction using the stored basic unit of the environmental load.

According to the present invention, the basic unit of the environmental load generated when generating energy is received and stored at predetermined time intervals. Then, the environmental load is predicted using the stored basic unit of the environmental load. Therefore, since the basic unit of the environmental load for a predetermined period is predicted based on the basic unit of the environmental load in the past, the basic unit of the environmental load can be accurately predicted.

[0015] According to still another aspect of the present invention, the energy management device receives the basic unit of the environmental load generated when the first energy generating source generates energy at a predetermined time interval. Means (S71), second receiving means (S73) for receiving, at predetermined time intervals, a basic unit of environmental load generated when energy is generated by the second energy source, and received first energy. Selection means (S77) for comparing the environmental load intensity of the source with the received environmental load intensity of the second energy source, and selecting one of the first energy source and the second energy source. ).

According to the present invention, the received basic unit of environmental load of the first energy source is compared with the received basic unit of environmental load of the second energy source, and the first and second energy sources are compared. One of the second energy sources is selected. Therefore, if an energy source having a small environmental load reduction unit is selected, the environmental load is reduced.
As a result, it is possible to provide an energy management device that promotes a reduction in generated environmental load.

According to still another aspect of the present invention, in the energy management method, a step (S1) of receiving a basic unit of an environmental load generated at the time of generating energy at predetermined time intervals; A step of determining an energy unit price according to a unit load unit for each predetermined period (S
3) and transmitting the determined energy unit price via the network (S33).

According to the present invention, the basic unit of the environmental load generated when energy is generated is received at predetermined time intervals, and the energy unit price according to the received basic unit of the environmental load is determined for each predetermined period. It is determined. For this reason, as the amount of environmental load increases, the energy unit price can be increased. In addition, since the determined energy unit price is transmitted via the network, the consumer can increase consumption during the period when the energy unit price is low, and can reduce consumption during the period when the energy unit price is high. As a result, it is possible to provide an energy management method that promotes reduction of generated environmental load.

According to still another aspect of the present invention, an energy management method is capable of supplying energy to energy consuming means (125) for consuming energy, and capable of storing a predetermined amount of energy. An energy management method for creating a schedule for accumulating and releasing energy in the means (127), wherein the step (S52) of predicting energy consumed by the energy consuming means in a predetermined period, and an environmental load in the predetermined period. Step of predicting basic unit (S56)
Creating a schedule for storing energy in the energy storage means based on the predicted energy consumption and the predicted unit of environmental load (S
58) and a step (S59) of creating a schedule for releasing the energy stored in the energy storage means based on the predicted energy consumption and the predicted basic unit of environmental load.

According to the present invention, the energy consumed in a predetermined period is predicted, and the basic unit of environmental load in the predetermined period is predicted. Then, a schedule for storing energy in the energy storage means is created based on the predicted energy consumption and the predicted basic unit of the environmental load, and the predicted energy consumption and the predicted environmental load source are calculated. A schedule for releasing the energy stored in the energy storage means is created based on the unit. For this reason, the schedule for storing energy in the energy storage means is a schedule for storing energy during a period when the environmental load is low, and the schedule for releasing energy stored in the energy storage means is a schedule for storing energy during a period when the environmental load is high. It is scheduled to be released. As a result, it is possible to provide an energy management method that promotes reduction of generated environmental load.

According to still another aspect of the present invention, the energy management method includes a step of receiving, at a predetermined interval, a basic unit of environmental load generated when energy is generated by the first energy generation source (S71). ) And a step of receiving, at predetermined time intervals, a basic unit of environmental load generated when the second energy generation source generates energy (S7).
3) and comparing the received basic unit of environmental load of the first energy source with the basic unit of environmental load of the second received energy source.
Selecting any one of the energy sources (S7)
7).

According to the present invention, the received basic unit of environmental load of the first energy source is compared with the received basic unit of environmental load of the second energy source, and the first and second energy sources are compared. One of the second energy sources is selected. Therefore, if an energy source having a small environmental load reduction unit is selected, the environmental load is reduced.
As a result, it is possible to provide an energy management method that promotes reduction of generated environmental load.

According to still another aspect of the present invention, the energy management program includes a step (S1) of receiving a basic unit of an environmental load generated at the time of generating energy at predetermined time intervals; The computer is caused to execute a step (S3) of determining an energy unit price according to a unit load unit for each predetermined period and a step of transmitting the determined energy unit price via a network (S33).

According to the present invention, the basic unit of the environmental load generated when energy is generated is received at predetermined time intervals, and the energy unit price according to the received basic unit of the environmental load is determined for each predetermined period. It is determined. For this reason, as the amount of environmental load increases, the energy unit price can be increased. In addition, since the determined energy unit price is transmitted via the network, the consumer can increase consumption during the period when the energy unit price is low, and can reduce consumption during the period when the energy unit price is high. As a result, it is possible to provide an energy management program that promotes reduction of the generated environmental load and a computer-readable recording medium on which the energy management program is recorded.

According to still another aspect of the present invention, an energy management program is capable of supplying energy to an energy consuming means (125) for consuming energy and capable of storing a predetermined amount of energy. An energy management program for causing a computer to create a schedule for storing and releasing energy in the means (127), wherein the energy consuming means estimates energy consumed in a predetermined period (S52); Estimating the basic unit of environmental load in step (S56), and based on the predicted energy consumption and the predicted basic unit of environmental load,
Creating a schedule for storing energy in the energy storage means (S58); and releasing the energy stored in the energy storage means based on the predicted energy consumption and the predicted unit of environmental load. For creating a schedule for (S5)
9) is executed by the computer.

According to the present invention, energy consumed in a predetermined period is predicted, and a basic unit of environmental load in the predetermined period is predicted. Then, a schedule for storing energy in the energy storage means is created based on the predicted energy consumption and the predicted basic unit of the environmental load, and the predicted energy consumption and the predicted environmental load source are calculated. A schedule for releasing the energy stored in the energy storage means is created based on the unit. For this reason, the schedule for storing energy in the energy storage means is a schedule for storing energy during a period when the environmental load is low, and the schedule for releasing energy stored in the energy storage means is a schedule for storing energy during a period when the environmental load is high. It is scheduled to be released. As a result, it is possible to provide an energy management program that promotes reduction of the generated environmental load and a computer-readable recording medium on which the energy management program is recorded.

According to still another aspect of the present invention, the energy management program receives, at a predetermined time interval, a basic unit of an environmental load generated when the first energy generation source generates energy (S71). ), Receiving the basic unit of the environmental load generated when energy is generated by the second energy source at predetermined time intervals (S73), and receiving the environmental load source of the first energy source. A step (S77) of comparing the unit with the received basic unit of environmental load of the second energy source and selecting one of the first energy source and the second energy source is performed by the computer.

According to the present invention, the received basic unit of environmental load of the first energy source is compared with the basic unit of environmental load of the received second energy source, and the first and second energy sources are compared. One of the second energy sources is selected. Therefore, if an energy source having a small environmental load reduction unit is selected, the environmental load is reduced.
As a result, it is possible to provide an energy management program that promotes reduction of the generated environmental load and a computer-readable recording medium on which the energy management program is recorded.

[0029]

Embodiments of the present invention will be described below with reference to the drawings. The same reference numerals in the drawings denote the same or corresponding members, and description thereof will not be repeated.

[First Embodiment] FIG. 1 is a diagram showing a schematic configuration of an energy management system according to a first embodiment of the present invention. Referring to FIG. 1, an energy management system 1 includes an energy management device 100 connected to a network 130, a personal computer (hereinafter, referred to as a “personal computer”) 110 on the energy supplier side,
It consists of an energy consumer personal computer 120.

The energy management apparatus 100 is a personal computer, and performs an energy management process described below by executing an energy management program. The energy management device 100 is installed in a company that provides an energy management service.

The energy management device 100 includes a control unit 103 for controlling the entire energy management device 100,
A communication unit 101 for connecting the energy management device 100 to the network 130 and a storage unit 105 for storing necessary information are included.

The control unit 103 is a central processing unit, and executes an energy management process described later. An external input / output device 107 is connected to the control unit 103. The external input / output device 107 is a magneto-optical storage device, and
9 can be read by the control unit 103 to be executed by the control unit 103 and data can be written to the recording medium 109 by an instruction from the control unit 103.

As the recording medium 109, a medium that fixedly holds a program such as a magnetic disk, an optical disk, an IC card, an optical card, or a semiconductor memory such as a flash memory can be used. Alternatively, the medium may be a medium that carries the program fluidly so that the program or data is downloaded from the network.

The storage unit 105 is a storage device such as a hard disk, and stores necessary data in accordance with an instruction from the control unit 103.

The energy supplier's personal computer 110 is installed in a factory such as a power company having a source for generating electric energy. The personal computer 110 includes a communication unit 111 for connecting the personal computer 110 to the network 130,
Measuring unit 11 for measuring environmental load and energy amount
5 and an environmental load calculation unit 113 that calculates a basic unit of the environmental load from the measured environmental load and energy amount.

The environmental load refers to carbon dioxide (CO ₂ ), nitrogen oxides (NOX), and sulfur oxides (SOX), and the basic unit refers to an amount generated by generating unit energy. Here, the unit of the basic unit is g-CO ₂ (NO
X, SOX) / kWh.

The measuring unit 115 measures, for example, the environmental load and energy amount generated by thermal power generation. When there is a plurality of environmental loads, measurement is performed for each environmental load.

The environmental load calculation unit 113 calculates a basic unit of the environmental load from the measured energy amount and the environmental load. The calculated basic unit of the environmental load is transmitted to the energy management apparatus 100 via the communication unit 111 for a predetermined period, for example, every hour.

The energy consumer personal computer 120 is installed in a factory, a general home, or an office that consumes electric energy. Energy consumer PC 120
Connects energy consumer PC 120 to network 1
The communication unit 121 includes a communication unit 121 for connecting to the power supply 30, an energy measuring unit 123 for measuring an amount of used energy, and an energy consuming unit 125 for consuming energy.

The energy consuming unit 125 is a facility that consumes electric power, and is, for example, an electrical facility such as an air conditioner or a machine tool installed in a factory.

The energy measuring section 123 measures the amount of energy consumed by the energy consuming section 125. For example, a wattmeter. The measured energy amount is transmitted to the energy management device 100 via the communication unit 121 for a predetermined period, for example, every hour. The energy consumer is given a unique identification code, and the information sent from the energy consumer personal computer to the energy management device is transmitted with the identification code added.

Energy supplier personal computer 110, energy consumer personal computer 120, and energy management device 1
00 are connected to the network 130, respectively. The network 130 is a network communication network such as the Internet or an intranet. Network 1
For 30, a dedicated network such as a local area network may be used. Thus, communication for exchanging data between the personal computers 110 and 120 and the energy management apparatus 100 via the network 130 can be performed.

The energy management device 100 and the energy supplier personal computer 110 can be the same. In this case, the processing performed in the personal computer 110 is performed by the energy management device 100.

FIG. 2 is a flowchart showing the flow of the energy management process performed by the energy management system according to the first embodiment. FIG. 2 shows the processing performed by the energy supplier personal computer in the left column, the processing performed by the energy management device in the central column, and the processing performed by the energy consumer personal computer in the right column.

Referring to FIG. 2, the energy supplier's personal computer 110 measures the environmental load and the energy amount generated at predetermined time intervals, for example, every hour, and measures the measured energy amount and the environmental load amount. , An environmental load basic unit is calculated (step S11). The calculated environmental load basic unit is transmitted to the energy management device 100 (step S12).

When there are a plurality of power plants as energy sources, the energy generated by each power plant and the environmental load generated by the power generation are measured. Then, an environmental load basic unit is obtained from the power generation energy and the environmental load measured for each power plant.

The calculated environmental load intensity St is received by the energy management apparatus 100 via the network 130 (step S1). Thereby, the energy management unit 100 receives the basic unit of environmental load St obtained every predetermined time.

The received environmental load basic unit is stored in the storage unit 10.
5 (step S2). Then, an energy unit price is determined based on the environmental load basic unit (step S3). The energy unit price is obtained, for example, by the following equation (1).

Energy unit price = a · St (where a is a constant) (1) The obtained energy unit price is stored in the storage unit 105 (step S 4).

The energy supplier PC 110
Then, the energy unit price is calculated and the energy management device 1
00 may be transmitted. In this case, the energy unit price is not calculated by the energy management device 100,
The energy unit price and the environmental load intensity are received from the energy supplier personal computer 110.

On the other hand, the energy consumer personal computer 120 measures the energy consumption (step S2).
1). The energy consumption Pt [kWh] is measured every predetermined period, for example, every hour using a wattmeter or the like. The measured energy consumption Pt is transmitted via the network 130 together with the identification code of the energy consumer (step S22), and the energy management device 10
0 is received (step S5). As a result, the energy management device 100 receives the energy consumption Pt measured every predetermined time.

In the energy management device 100, the received energy consumption Pt is stored in the storage unit 105 together with the identification code (step S6). By storing together with the identification symbol, even when there are a plurality of energy consumers, it is possible to store the energy consumers separately for each energy consumer.

The energy management device determines whether the settlement period has elapsed (step S7). If the settlement period has elapsed, the process proceeds to step S8. If not, the process proceeds to step S1. As a result, the environmental load basic unit, the energy unit price, and the energy consumption are stored in the storage unit 105 for each predetermined period until the settlement period elapses.

In step S8, using the energy unit price and the energy consumption stored in the storage unit 105, an energy usage fee is calculated for each energy consumer, and stored in the storage unit 105 in association with the identification code. .

Then, the energy usage fee for each energy consumer is transmitted to the energy supplier personal computer 110 via the network 130 (step S9).

When the usage fee is received (step S15), the energy supplier PC 110 issues a bill for each energy consumer (step S16).

FIG. 3 is a flowchart showing the flow of the energy unit price and usage fee transmission processing performed by the energy management apparatus according to the first embodiment. FIG.
Shows the processing performed by the energy management device 100 in the left column, and the processing performed by the energy consumer-side personal computer in the right column.

Referring to FIG. 3, first, a signal requesting an energy unit price from energy consumer personal computer 120 is as follows.
Sent via the network 130 (step S4
1). Upon receiving the signal requesting the energy unit price (step S31), the energy management apparatus 100 reads out the energy unit price stored in the storage unit 105 (step S32). Since the storage unit 105 stores the past energy unit price for each predetermined period as described above, the past energy unit price is read out.
The daily energy unit price is transmitted to the requested energy consumer personal computer 120 via the network (step S33).

The energy consumer personal computer 120 receives the energy unit price and displays it on the display (step S42). Thereby, the user of the energy consumer personal computer 120 can know the past energy unit price. In particular, by looking at the last energy unit price, the current energy unit price can be predicted, and the power consumption can be determined accordingly.

Furthermore, if the energy management unit 100 transmits the energy unit price for each hour on the previous day, it is possible to predict the daily change of the energy unit price on the current day. From
The energy usage of the day can be determined. When the energy unit price is low, energy consumption increases,
Energy consumption can be planned to reduce energy consumption when the energy unit price is high.

On the other hand, in the energy consumer personal computer 120, the usage fee for each consumer is stored in the storage unit 105. This charge can be viewed from the energy consumer PC. A request for browsing the usage fee is transmitted from the energy consumer personal computer 120 to the energy management device 100 (step S43).

When the energy management apparatus 100 receives a request for browsing the usage fee (step S34), a request for an identification code (ID) is transmitted to the energy consumer personal computer 120 (step S35). The energy consumer personal computer 120 transmits the identification code of the consumer upon request (step S45). The identification symbol is a symbol assigned to each energy consumer, and is a unique symbol for each energy consumer.

When the energy management apparatus 100 receives the identification code (step S36), the usage fee stored in the storage unit 105 in association with the identification code is read (step S37). Then, the read usage fee is transmitted to energy consumer personal computer 120 (step S38). Energy consumer PC 12
At 0, the usage fee is received, and the usage fee is displayed on the display (step S46). This allows the energy consumer to know the usage fee before receiving the bill.

As described above, in the energy management system according to the first embodiment, the energy unit price is displayed at predetermined time intervals on the energy consumer personal computer 120. Consumption can be increased, and consumption during periods of high energy unit prices can be reduced.

Further, since the usage fee is calculated for each energy consumer using the energy unit price and the energy usage amount, the usage fee can be set in accordance with the unit of environmental load. Further, since the calculated usage fee can be viewed on the energy consumer personal computer 120, it can be confirmed before receiving a bill, which is convenient.

Further, since the energy user can know the energy unit price and the energy usage fee in real time, the energy consumer can be more conscious of reducing the energy consumption.

[Second Embodiment] Next, an energy management device according to a second embodiment of the present invention will be described. FIG. 4 is a diagram illustrating a schematic configuration of an energy management system according to the second embodiment of the present invention. Referring to FIG. 4, an energy management system 1A includes an energy management device 100A connected to a network 130, an energy supplier-side personal computer 110A, and an energy consumer personal computer 120A.

The energy management device 100A is a personal computer, and performs an energy management process by executing an energy management program. The energy management device 100A is installed in a company that provides an energy management service.

The energy management device 100A includes a control unit 103 for controlling the entire energy management device 100A.
And the energy management device 100A
And a storage unit 105 for storing necessary information.

The control unit 103 is a central processing unit. An external input / output device 107 is connected to the control unit 103. The external input / output device 107 is a magneto-optical storage device,
The energy management program to be executed by the control unit 103 recorded on the recording medium 109 is read, and the control unit 1
Data can be written to the recording medium 109 in accordance with an instruction from the host computer 03.

The storage unit 105 is a storage device such as a hard disk, and stores necessary data in accordance with an instruction from the control unit 103.

The energy supplier's personal computer 110A is installed in a factory such as a power company having a source for generating electric energy. The personal computer 110A is a personal computer 11
Communication unit 11 for connecting 0A to network 130
1, a measuring unit 115 for measuring the environmental load and the energy amount, and an environmental load calculating unit 113 for calculating a basic unit of the environmental load from the measured environmental load and the energy amount.

The measuring section 115 measures, for example, the environmental load and energy amount generated by thermal power generation. When there is a plurality of environmental loads, measurement is performed for each environmental load.

The environmental load calculating unit 113 calculates a basic unit of the environmental load from the measured energy amount and the environmental load. The calculated basic unit of the environmental load is transmitted to the energy management apparatus 100A via the communication unit 111 for a predetermined period, for example, every hour.

The energy consumer personal computer 120A is installed in a factory, a general home, or an office that consumes electric energy. The personal computer 120A includes a communication unit 121 for connecting the personal computer 120A to the network 130, an energy measuring unit 123 for measuring the amount of used energy, an energy consuming unit 125 for consuming energy, and an energy for storing energy. And a storage unit 127.

The energy consuming unit 125 is a facility that consumes electric power, and is, for example, an electrical facility such as an air conditioner or a machine tool installed in a factory.

The energy measuring section 123 measures the amount of energy consumed by the energy consuming section 125. For example, a wattmeter. The measured energy amount is transmitted to the energy management device 100A via the communication unit 121 for a predetermined period, for example, every hour. The energy consumer is given a unique identification code, and the information sent from the energy consumer personal computer to the energy management device is transmitted with the identification code added.

The energy storage section 127 stores the energy supplied from the energy supplier. For example,
Secondary batteries such as lead storage batteries and alkaline storage batteries (such as nickel-cadmium batteries). In addition, the energy storage unit 127 releases the stored energy to the energy consuming unit 125 as needed.

The energy supplier personal computer 110A, the energy consumer personal computer 120A, and the energy management device 100A are connected to the network 130, respectively. The network 130 is a network communication network such as the Internet or an intranet. Further, a dedicated network such as a local area network may be used as the network 130. Thus, communication for exchanging data between the personal computers 110A and 120A and the energy management apparatus 100A via the network 130 can be performed.

The energy management device 100A and the energy supplier personal computer 110A can be the same. In this case, the processing performed in personal computer 110A is performed in energy management device 100A.

FIG. 5 is a block diagram showing detailed functions of the control unit 103 of the energy management device 100A according to the second embodiment. Referring to FIG. 5, control unit 103
Is a charge calculation unit 139 for calculating an energy consumption rate and an energy consumption rate for each energy consumer,
An energy consumption prediction unit 131 for predicting energy consumed by the energy consuming unit 125, an environmental load basic unit prediction unit 133 for predicting an environmental load basic unit, and a storage schedule for creating a schedule for storing energy in the energy storage unit 127. It includes a creation unit 135 and a release schedule creation unit 137 that creates a schedule for releasing the energy stored in the energy storage unit 127.

The charge calculation unit 139 executes the same processing as the control unit 101 of the energy management device 100 according to the first embodiment. Here, description will not be repeated.

The energy consumption predicting unit 131 stores the data in the storage unit 1
Based on the past energy consumption stored in 05,
The energy consumption for a predetermined period, for example, one day ahead is predicted. The energy consumption is predicted, for example, on an hourly basis, and a distribution of the energy consumption in a predetermined period is obtained. Forecasting uses not only past energy consumption, such as energy consumption of the previous day, energy consumption of the last week, and energy consumption of the same day one year ago, but also weather data available from external computers. Used. The weather data is used, for example, in summer to increase the energy consumption of the air conditioner on a sunny day and conversely on a cloudy or rainy day. In winter, the energy consumption of the air conditioner is reduced on sunny days, cloudy and rainy,
Snow days are often used. The predicted energy consumption is transmitted to the accumulation schedule creation unit 135 and the release schedule creation unit 137.

The unit for predicting unit of environmental load 133 includes a storage unit 1
Based on the past unit of environmental load stored in 05, the unit of environmental load is predicted for a predetermined period, for example, one day ahead. The predetermined period is the same period as the period predicted by the energy consumption prediction unit 131. The environmental load basic unit is predicted, for example, on an hourly basis, and the distribution of the environmental load basic unit in a predetermined period is obtained. The predicted environmental load basic unit is transmitted to the accumulation schedule creation unit 135 and the release schedule creation unit 137.

Instead of the basic unit of environmental load, a green degree for a period indicating the degree obtained based on the basic unit of environmental load may be used. The greenness is calculated as the reciprocal of the environmental load intensity. The period green degree (G0) indicates the ratio of the basic unit of environmental load in a predetermined period, and is obtained by the following equation (2) using the green degree.

G0 = 1 / Σ (Pt · St) (2) where Pt is the predicted energy consumption and St is
Estimated basic unit of environmental load.

The storage schedule creation unit 135 uses the energy consumption predicted by the energy consumption prediction unit and the greenness of the period predicted by the environmental load intensity prediction unit 133 to store energy in the energy storage unit 127. Create a schedule for Instead of the period greenness, an environmental load intensity unit may be used.

In the storage schedule, the amount of energy required to be stored and the storage time are calculated based on the energy consumption predicted by the energy consumption prediction unit 131, and the green period is calculated during the period predicted by the environmental load unit consumption prediction unit 133. The accumulation time is scheduled based on the degree. The scheduling is optimized so that the environmental load intensity is minimized. Specifically, the accumulation time is allocated in order from the period in which the green degree is high (the unit of environmental load is low). Thus, a schedule for accumulating energy as much as possible at a time when the environmental load intensity is low is created.

When there are a plurality of environmental loads, for example,
In the case where there are three of 2, SOx, and NOx, scheduling for optimizing one of the selected environmental loads is performed.

The release schedule creating section 137 uses the energy consumption predicted by the energy consumption predicting section and the period greenness predicted by the environmental load intensity prediction section 133 to store the energy stored in the energy storing section 127. Create a schedule for release. The scheduling is optimized so that the environmental load intensity is minimized. Specifically, in the release schedule, the energy stored in the energy storage unit 127 is allocated in order from the period in which the period greenness is low (the unit of environmental load is high). As a result, a schedule for releasing energy as much as possible during a period in which the environmental load intensity is high is created. For this reason, the amount of energy supplied from the energy supplier can be reduced during the period in which the basic unit of environmental load is high, so that the energy supplier can suppress the generation of energy. As a result, the occurrence of environmental load can be reduced. It should be noted that instead of the period greenness, an environmental load intensity unit may be used.

The created storage schedule and release schedule are transmitted to the energy consumer personal computer 120A via the communication unit 101. Further, based on the accumulation schedule, the release schedule, and the energy consumption predicted by the energy consumption prediction unit 131, the energy required to be supplied from the energy supplier is calculated and transmitted to the energy supplier personal computer 110A via the communication unit. You may. Thereby, the energy supplier can predict the energy demand within a predetermined period.

FIG. 6 is a flowchart showing the flow of a schedule creation process performed by the energy management apparatus 100A according to the second embodiment. Referring to FIG. 6, the past energy consumption stored in storage unit 105 is read (step S51), and the energy consumption of the next day is predicted. In the present embodiment, the predetermined period is set to one day, and the energy consumption of the next day is calculated. However, the present invention is not limited to this, and may be a predetermined period in the future. Energy consumption is, for example, 1
Forecasted hourly, the energy consumption distribution for the next day is determined. The past energy consumption used for the prediction is predicted using, for example, the energy consumption of the previous day, the energy consumption of the last week, the energy consumption of the same month one year ago (step S52). In addition, weather data available from an external computer is used.
The weather data is used, for example, in summer to increase the energy consumption of the air conditioner on a sunny day and conversely on a cloudy or rainy day. In winter, the air conditioner is used so that the energy consumption of the air conditioner is reduced on a sunny day and increased on a cloudy day, a rainy day, and a snowy day.

The required stored energy is calculated based on the predicted energy consumption of the next day (step S53). The required heat storage energy may be all of the energy that can be stored in the energy storage unit 127, or the sum of the energy consumption in a preset expected storage time zone may be the energy storage unit 12
7 is less than the energy that can be stored, the total may be used.

Then, the time required to store the calculated stored energy is calculated (step S5).
4). The time required to store the stored energy is
When determined by the performance of the energy storage unit 127, the performance of the energy storage unit 127 may be stored in the storage unit 105, or may be received from the energy consumer personal computer 120A via the network 130.

Next, the past unit of environmental load stored in the storage unit 105 is read out (step S55), and the unit of environmental load on the next day is predicted (step S56). The environmental load basic unit is predicted, for example, on an hourly basis, and the distribution of the environmental load basic unit in a predetermined period is obtained. The predicted unit of environmental load is converted into the green degree for the period (step S57).

Then, a schedule for storing energy in the energy storage unit 127 is created using the storage time obtained in step S54 and the period greenness obtained in step S57 (step S5).
8). The accumulation schedule is performed by allocating the accumulation time obtained in step S54 in order from the period in which the greenness is high (the unit of environmental load is low) during the period obtained in step S57. Thus, a schedule for accumulating energy as much as possible at a time when the environmental load intensity is low is created. However, if there are multiple energy consumers, creating a schedule based on the same criteria for all consumers will result in a concentration of demand during periods of high greenness, resulting in a low greenness during that period. May be lost. Therefore, when allocating the accumulation time, by intentionally shifting the period to be allocated, it is possible to prevent the adverse effect that the period greenness is reduced as a result.

Next, a schedule for releasing the energy stored in the energy storage unit 127 is created using the energy consumption of the next day predicted in step S52 and the green degree for the period obtained in step S57. (Step S59). The release schedule is performed by allocating the energy stored in the energy storage unit 127 in order from the period in which the green degree is low (the unit of environmental load is high). As a result, a schedule for releasing energy as much as possible during a period in which the environmental load intensity is high is created.

The created storage schedule and release schedule are stored in the energy consumer personal computer 120.
A via the communication unit 101 (step S6).
0). Further, based on the storage schedule, the release schedule, and the energy consumption predicted by the energy consumption prediction unit 131, the energy required to be supplied from the energy supplier is calculated, and the energy supplier personal computer 110
A may be transmitted via the network 130. This allows the energy supplier to predict energy demand within a predetermined period.

FIG. 7 is a diagram showing an example of an environmental load unit predicted by the energy management apparatus 100A according to the second embodiment. In the figure, the environmental load is represented by carbon dioxide (C
O2) as an example, where the horizontal axis represents time and the vertical axis represents CO2.
Emission basic unit. The hatched portion indicates the amount of CO2 emission per unit of electric power at the power generation end (energy supplier), and the portion without hatching indicates the amount of CO2 emission for power generation, transmission loss, and nighttime pumping power transfer. The sum of the two indicates the basic unit at the demand end (energy consumers).

FIG. 8 is a diagram showing an example of energy consumption predicted by the energy management device 100A according to the second embodiment. The horizontal axis represents time, and the vertical axis represents power consumption (energy consumption). The energy consumption in the time period from 9:00 to 19:00 is larger than in other time periods. In comparison with FIG. 7, in the time zone from 9:00 to 19:00, the CO2 emission intensity is larger than in other time zones.

The energy management apparatus 100A according to the second embodiment stores energy in the energy storage unit 127 during a period when the CO2 emission intensity is small, and reduces the amount of CO2 emission during a period when the CO2 emission intensity is large. The purpose is. In addition, the distribution is optimized using the environmental load intensity or the period greenness.

FIG. 9 is a diagram showing the distribution of energy supplied to the energy consumers shown in FIG. 8 according to the storage schedule and the release schedule created by the energy management device 100A according to the second embodiment.

In the figure, the portion shown by the dotted line indicates the energy released from the energy storage unit 127, and the portion shown by the solid line without hatching indicates the energy stored in the energy storage unit 127. The energy supplied from the energy supplier is shown by a hatched portion and a portion indicated by a solid line without hatching.

In comparison with FIGS. 7 and 8, the amount of energy supplied from the energy supplier is increased during the time period when the CO2 emission intensity is small, and the energy amount is increased during the time period when the CO2 emission intensity is high. The amount of energy supplied is decreasing. This is because the reduced energy is supplied from the energy storage unit 127.

As a result, without considering the environmental load intensity unit,
Energy is stored in the energy storage unit 127 for a predetermined period (for example, a period from 22:00 to 6:00), and energy is released from the energy storage unit for another predetermined period (for example, a period from 12:00 to 16:00). The amount of CO2 emitted during one day is reduced as compared with the case where the above is done.

As described above, in the energy management system according to the second embodiment, the schedule for accumulating energy and the schedule for releasing energy in the energy storage unit 127 provided on the energy consumer side are defined by a period. Since the optimization is performed so as to reduce the greenness, the generation of environmental load can be reduced.

When the energy usage fee is determined according to the environmental load basic unit, the energy stored in the energy storage unit 127 during the time when the environmental load basic unit is small is used in the time zone where the environmental load basic unit is large. Because it is used, the energy usage fee is reduced. As a result, it is possible to increase the energy consumers' awareness of reducing energy consumption.

[Third Embodiment] Next, an energy management system according to a third embodiment will be described.
The energy management system according to the third embodiment includes:
An individual energy source is provided on the energy consumer side of the energy management system 1 according to the first embodiment. The same components as those of the energy management system 1 according to the first embodiment are denoted by the same reference numerals, and description thereof will not be repeated here.

FIG. 10 is a block diagram showing a schematic configuration of an energy management system 1B according to the third embodiment. Referring to FIG. 10, energy consumer personal computer 1
The individual dispersion energy source 150 is connected to 20B. The individual distributed energy source is, for example, a fuel cell, a gas turbine generator, or the like.
5, energy can be supplied independently of the energy supplied from the energy supplier.

The individual distributed energy source 150 includes a communication unit 151 for communicating with the energy consumer personal computer, a measuring unit 153 for measuring the environmental load generated by the energy source, and a basic unit of the measured environmental load. And an environmental load calculation unit 152 for calculating.

The measuring section 153 is provided for the individual dispersed energy source 1
The environmental load and the energy amount at which 50 occurs are measured.
When there is a plurality of environmental loads, measurement is performed for each environmental load.

The environmental load calculation unit 152 calculates a basic unit of the environmental load from the measured energy amount and the environmental load. The calculated basic unit of the environmental load is transmitted to the energy consumer personal computer 120 via the communication unit 151 for a predetermined period, for example, every hour. The energy consumer personal computer 120 transmits the received basic unit of environmental load together with the energy consumption to the energy management apparatus 100B via the network.

FIG. 11 is a flowchart showing a flow of a use schedule creation process performed by the energy management apparatus 100B according to the third embodiment. FIG.
Shows the processing performed by the energy supplier personal computer 110 in the left column, the processing performed by the energy management device 100B in the central column, and the processing performed by the energy consumer personal computer 120B in the right column.

Referring to FIG. 2, environmental load and energy amount generated at predetermined time, for example, every hour, are measured by energy supplier personal computer 110, and the measured energy amount and environmental load amount are measured. , An environmental load basic unit is calculated (step S61). The calculated environmental load basic unit is transmitted to the energy management device 100B (Step S62).

When there are a plurality of power stations, which are energy sources, the energy generated by each power station and the environmental load caused by the power generation are measured. Then, an environmental load basic unit is obtained from the power generation energy and the environmental load measured for each power plant.

The obtained basic unit of environmental load St is received by the energy management apparatus 100B via the network 130 (step S71). Thereby, the environmental load intensity unit St obtained at every predetermined time is received by the energy management apparatus 100B. The received environmental load basic unit St is stored in the storage unit 105 (step S7).
2).

On the other hand, the energy consumer personal computer 120B
, The measuring unit 15 of the individual dispersed energy source 150
3, the environmental load and the energy amount generated by the individual distributed energy source 150 are measured, and the basic unit of the environmental load is calculated from the measured energy amount and the environmental load (step S81). Calculated environmental load intensity Dt
Is transmitted to the energy management device 100B via the energy consumer personal computer 120B (step S8).
2).

When there are a plurality of individual distributed energy sources 150, the energy generated by each individual distributed energy source 150 and the environmental load generated by the power generation are measured. Then, an environmental load basic unit is obtained from the generated energy and the environmental load measured for each individual distributed energy source 150, and transmitted.

The obtained basic unit of environmental load Dt is received by the energy management apparatus 100B (step S7).
3). As a result, the unit of environmental load Dt obtained at every predetermined time is received by the energy management apparatus 100B. The received environmental load basic unit Dt is stored in the storage unit 105.
(Step S74).

Then, the energy consumer personal computer 120
In B, the energy consumption is measured (step S8).
3). The energy consumption Pt [kWh] is measured every predetermined period, for example, every hour using a wattmeter or the like. The measured energy consumption Pt is transmitted via the network 130 together with the identification code of the energy consumer (step S84), and the energy management device 10
0B (step S75). Thereby, the energy consumption amount Pt measured every predetermined time is received by the energy management device 100B.

Next, in the energy management device, the storage unit 1
The period greenness is obtained for each of the environmental load basic units St and Dt stored in step 05 (step S7).
6). The period green degree for the environmental load basic unit St is G
os, the period greenness for the unit of environmental load Dt is G
od, they are obtained according to the following equations (3) and (4), respectively.

Gos = 1 / Σ (Pt · St) (3) God = 1 / Σ (Pt · Dt) (4) Then, based on the obtained greenness, the energy source with the smallest greenness is determined. Is selected (Step S7)
7). An energy source having a small unit of environmental load may be selected without obtaining the green degree during the period. The selected energy source is transmitted to the energy consumer personal computer 120B (step S78).

When the energy consumer personal computer 120B receives the selected energy source (step S8)
5) The power source is switched so that energy is supplied from the selected energy source (step S86).

As described above, in the energy management system 1B according to the third embodiment, the environmental load intensity generated in the individual distributed energy source is considered,
The energy source is determined. For this reason, the unit of environmental load can be reduced.

If the period greenness Gos is calculated in consideration of the power transmission loss from the energy supplier, the comparison between the individual distributed energy source and the period greenness can be made more accurately. The environmental load intensity can be further reduced.

The embodiment disclosed this time is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a schematic configuration of an energy management system according to a first embodiment of the present invention.

FIG. 2 is a flowchart illustrating a flow of an energy management process performed by the energy management system according to the first embodiment.

FIG. 3 is a flowchart illustrating a flow of an energy unit price and usage fee transmission process performed by the energy management apparatus according to the first embodiment.

FIG. 4 is a diagram illustrating a schematic configuration of an energy management system according to a second embodiment of the present invention.

FIG. 5 is a block diagram illustrating detailed functions of a control unit of the energy management device according to the second embodiment.

FIG. 6 is a flowchart illustrating a flow of a schedule creation process performed by the energy management device according to the second embodiment.

FIG. 7 is a diagram illustrating an example of an environmental load intensity unit predicted by an energy management device according to a second embodiment.

FIG. 8 is a diagram illustrating an example of energy consumption predicted by the energy management device according to the second embodiment.

FIG. 9 is a diagram showing a distribution of energy supplied to the energy consumer shown in FIG. 8 according to a storage schedule and a release schedule created by the energy management device according to the second embodiment.

FIG. 10 is a block diagram illustrating a schematic configuration of an energy management system according to a third embodiment.

FIG. 11 is a flowchart illustrating a flow of a use schedule creation process performed by the energy management apparatus according to the third embodiment.

[Explanation of symbols]

1,1A, 1B Energy management system, 100,1
00A Energy management device, 101, 111, 12
1,151 communication unit, 103 control unit, 105 storage unit,
107 external input / output device, 109 recording medium, 110,
110A Energy supplier PC, 113, 152
Environmental load calculation unit, 115, 153 measurement unit, 120,
120A, 120B Energy consumer PC, 12
3 Energy measuring unit, 125 Energy consuming unit, 1
27 Energy storage unit, 130 network, 131
Energy consumption prediction unit, 133 environmental load intensity prediction unit, 135 accumulation schedule creation unit, 137 release schedule creation unit, 139 charge calculation unit, 150 individual distributed energy sources.

Claims (13)

[Claims] 1. A first receiving means (S1) for receiving a basic unit of an environmental load generated at the time of generating energy at predetermined time intervals, and an energy unit price according to the received basic unit of an environmental load. Determining means (S3) for determining each predetermined period
An energy management device comprising: a transmission unit (S33) configured to transmit the determined energy unit price via a network. 2. A second receiving means (S5) for receiving an amount of used energy at intervals corresponding to the predetermined period.
Calculating means (S) for calculating a usage fee using the determined energy unit price and the received energy usage amount.
The energy management device according to claim 1, comprising: (8). 3. Energy can be supplied to energy consuming means (125) consuming energy,
An energy management device (100) for creating a schedule for storing and releasing energy in an energy storage means (127) capable of storing a predetermined amount of energy.
A) an energy estimating means (S52) for estimating energy consumed by the energy consuming means in a predetermined period; and an environmental load estimating means (S56) for estimating a unit of environmental load in the predetermined period. A storage schedule creation unit (S58) for creating a schedule for storing energy in the energy storage unit based on the predicted energy consumption and the predicted unit load of environmental load; An energy management device comprising: a release schedule creation unit (S59) for creating a schedule for releasing the energy stored in the energy storage unit based on the energy consumption and the predicted unit consumption of the environmental load. . 4. A receiving unit (S01) for receiving an amount of used energy at intervals corresponding to the predetermined period, and a storing unit (S02) for storing the received amount of energy used, The energy management device according to claim 3, wherein the energy prediction unit predicts energy consumed in the predetermined period using the stored energy usage. 5. A receiving means (S) for receiving a basic unit of environmental load generated at the time of generating energy at predetermined time intervals.
03); and a storage unit (S02) for storing the received basic unit of the environmental load, wherein the environmental load predicting unit uses the stored basic unit of the environmental load for the environmental load of the predetermined period. The energy management device according to claim 3, wherein the energy management device predicts the following. 6. A first receiving means (S71) for receiving, at predetermined time intervals, a basic unit of an environmental load generated when energy is generated by a first energy generation source; Second receiving means (S73) for receiving, at a predetermined time interval, the basic unit of the environmental load generated when generating the environmental load, and the received environmental load basic unit of the first energy generation source and the received second unit. An energy management device comprising: a selection unit (S77) for comparing the unit of environmental load of the energy source with the unit of environmental load and selecting one of the first energy source and the second energy source. 7. A step of receiving a basic unit of an environmental load generated when generating energy at predetermined time intervals (S).
1) and determining an energy unit price according to the received basic unit of environmental load for each of the predetermined periods (S3).
And a step of transmitting the determined energy unit price via a network (S33). 8. Energy can be supplied to energy consuming means (125) consuming energy,
An energy management method for creating a schedule for storing and releasing energy in an energy storage unit (127) capable of storing a predetermined amount of energy, wherein the energy consumption unit predicts energy consumed in a predetermined period ( (S52); a step of predicting the basic unit of the environmental load in the predetermined period (S56); and, based on the predicted energy consumption and the predicted basic unit of the environmental load, energy is supplied to the energy storage means. Creating a schedule for storing energy (S58); and releasing the energy stored in the energy storage means based on the predicted energy consumption and the predicted basic unit of environmental load. Creating a schedule (S59). -Management method. 9. A step (S71) of receiving a basic unit of an environmental load generated when energy is generated by the first energy generation source at predetermined time intervals, and generating energy by the second energy generation source. Receiving the basic unit of the environmental load generated at a predetermined time interval (S73); and receiving the basic unit of the environmental load of the first energy source and the environmental load of the second source of energy received. Comparing with the basic unit and selecting one of the first energy generation source and the second energy generation source (S77). 10. A step (S1) of receiving a basic unit of environmental load generated at the time of generating energy at a predetermined interval, and calculating an energy unit price according to the received basic unit of environmental load by the predetermined unit. Step of determining for each period (S3)
And a step (S33) of transmitting the determined energy unit price via a network to a computer. 11. A schedule for storing and releasing energy in an energy storage means (127) capable of supplying energy to an energy consuming means (125) consuming energy and capable of storing a predetermined amount of energy. An energy management program to be created by a computer, comprising: a step of predicting energy consumed by the energy consuming means in a predetermined period (S52); and a step of predicting a basic unit of environmental load in the predetermined period (S56). And (S58) creating a schedule for storing energy in the energy storage means based on the predicted energy consumption and the predicted unit of environmental load (S58). Consumption and the estimated unit of environmental load A step (S59) of creating a schedule for releasing the energy stored in the energy storage means based on the program. 12. A step (S71) of receiving a basic unit of an environmental load generated when energy is generated by the first energy generation source at predetermined intervals, and generating energy by the second energy generation source. Receiving the basic unit of the environmental load generated at a predetermined time interval (S73); and receiving the basic unit of the environmental load of the first energy source and the environmental load of the second source of energy received. (S77) comparing the basic unit and selecting one of the first energy generation source and the second energy generation source. 13. A computer-readable recording medium on which the energy management program according to claim 10 is recorded.