JP7627311B2 - Power information management system and method - Google Patents

Description

The present invention relates to a power information management system and method, and is suitable for application to, for example, a power system.

In recent years, the importance of renewable energy in solving environmental problems has been growing. Accordingly, there has been an increase in activities (hereinafter referred to as environmental activities) that aim to provide environmental value to society by providing all the energy consumed by the entire activities of a particular company with renewable energy sources such as solar and wind power (for example, see Non-Patent Document 1 below).

In addition, with the expansion of such environmental activities, trading of environmental value certificates such as green power certificates is also becoming more active. Environmental value certificates are certificates that recognize that electricity derived from renewable energy sources has "environmental value" in the form of reduced carbon dioxide emissions in addition to the value of the electricity itself, and allow this "environmental value" to be separated from the electricity and traded upon certification by a third-party organization. By purchasing this environmental value certificate, non-renewable energy with the amount of power associated with the environmental value certificate can be treated as electricity derived from renewable energy sources.

In relation to the environmental value mentioned above, Patent Document 1 discloses a system that fairly evaluates the added environmental value of renewable energy power generation.

JP 2012-38342 A

“Japan’s first 100% renewable energy Setagaya Line operation begins on Electricity Day, March 25th”, [online], March 25, 2019, Tokyu Corporation, and two other companies, [accessed April 3, 2019], Internet〈URL: https://www.tokyu.co.jp/image/news/pdf/20190325-1-1.pdf〉

However, if the entire business activity is targeted, a large amount of funding is required to purchase the renewable energy that supports the entire business. In other words, only large companies with financial resources can carry out such environmental activities, and it is difficult for other members, such as small and medium-sized enterprises that do not have the financial resources, to carry out such activities.

Therefore, if a method could be provided to prove the environmental value of using only renewable energy in a certain part of a company's activities, rather than in its entirety, it would be possible to practice environmental activities without requiring large amounts of capital, which would likely promote environmental activities.

The present invention has been made in consideration of the above points, and aims to propose an electric power information management system and method that can further promote environmental activities.

In order to solve such problems, the present invention provides an electricity information management system comprising a management device that manages information on received electricity of equipment including renewable energy electricity and non-renewable energy electricity, and a display device, wherein the management device causes the display device to display the proportion of renewable energy electricity in the received electricity of the equipment unit during the target period in association with the equipment, while managing in an electricity reception history information management database the amount of received electricity of the equipment, the amount of renewable energy electricity included in the amount of received electricity, and the amount of renewable energy electricity equivalent to the amount of renewable energy electricity purchased for an environmental value certificate among the amount of renewable energy electricity in association with each other, and displays the information stored in the electricity reception history information management database when necessary .

In addition, the present invention provides an electric power information management method executed by an electric power information management system including a management device that manages information on received power of equipment including renewable energy power and non-renewable energy power, and a display device, in which the management device causes the display device to display the proportion of renewable energy power in the received power during a target period for the equipment unit in association with the equipment , while managing in an electric power reception history information management database the amount of received power of the equipment, the amount of renewable energy power included in the amount of received power, and the amount of renewable energy power equivalent to the amount of purchased environmental value certificates among the amount of renewable energy power, in association with each other, and displaying the information stored in the electric power reception history information management database when necessary .

The electricity-based management device and method of the present invention allow companies to proactively promote their environmental activities and improve their public image.

The present invention makes it possible to realize an electricity-based management device and method that can further promote environmental activities.

1 is a block diagram showing an overall configuration of a power system according to an embodiment of the present invention; FIG. 2 is a block diagram showing a configuration example of an electric power management device. 11 is a diagram showing an example of the configuration of a power reception history information management database. FIG. 13 is a diagram showing an example of the configuration of a setting screen. 13 is a flowchart showing a processing procedure of an electric power-related management process. 13A and 13B are diagrams showing examples of message display. 1 is a conceptual diagram for explaining an example of application of the control of the proportion of renewable energy electricity in the received electricity of equipment by the electricity-derived management device of this embodiment to the operation of multiple trains. FIG. FIG. 13 is a conceptual diagram for explaining an example of application of the control of the proportion of renewable energy electricity in the received electricity of equipment by the electricity-derived management device according to this embodiment to the operation of multiple production lines in a factory. FIG. 13 is a conceptual diagram for explaining an example of application of the control of the proportion of renewable energy electricity in the received electricity of equipment by the electricity-derived management device according to this embodiment to charging multiple guide robots installed in an airport or the like. FIG. 11 is a conceptual diagram for explaining an example of application of the control of the proportion of renewable energy electricity in the received electricity of equipment by the electricity-derived management device according to this embodiment to the power consumption of a hotel. FIG. 13 is a conceptual diagram for explaining an example of application of the control of the proportion of renewable energy electricity in the received electricity of equipment by the electricity-derived management device according to this embodiment to the operation of multiple elevator devices installed in an office building, etc.

One embodiment of the present invention will be described in detail below with reference to the drawings.

(1) Configuration of the power system according to the present embodiment In Fig. 1, reference numeral 1 denotes the power system according to the present embodiment as a whole. This power system 1 is configured to include one or more renewable energy power generation facilities 2, non-renewable energy power generation facilities 3, and a consumer-side system 4.

Each renewable energy power generation facility 2 is a renewable energy power generation facility such as a wind power generation facility or a solar power generation facility owned by a power generation company that has concluded a power supply contract with the consumer, who is the owner of the consumer-side system 4, and the non-renewable energy power generation facility 3 is a non-renewable energy power generation facility such as a thermal power plant, a hydroelectric power plant, and a nuclear power plant. These renewable energy power generation facilities 2 and non-renewable energy power generation facilities 3 are connected to the consumer-side system 4 via a power network 5 such as a power transmission line, and supply power to the consumer-side system 4.

In the following, electricity derived from renewable energy generated by the renewable energy power generation facility 2 will be referred to as renewable energy electricity, and electricity derived from non-renewable energy generated by the non-renewable energy power generation facility 3 will be referred to as non-renewable energy electricity, where appropriate. Electricity consisting of this renewable energy electricity and non-renewable energy electricity is supplied to the consumer system 4 via the power network 5.

The consumer-side system 4 is a system maintained by electricity consumers such as office buildings, hotels, airports, factories, and railway operators. In this embodiment, the consumer-side system 4 includes a renewable energy power generation facility 6, one or more facilities 7, and an electricity-derived management device 8.

The renewable energy power generation equipment 6 is composed of, for example, solar panels installed on the side or roof of a building such as an office building, and transmits the generated renewable energy power to each equipment 7 or to a specific equipment 7 via power transmission lines 9 in the consumer-side system 4. The equipment 7 is also composed of individual elevators and individual escalators in each building, and/or individual production lines in a factory, or individual storage batteries (including storage batteries mounted on mobile objects powered by electricity such as electric vehicles), and receives the power supplied via the power transmission lines 9 to operate or store the power.

The electricity-derived management device 8 has the function of controlling the proportion of renewable energy electricity in the power received by each piece of equipment 7 in the consumer-side system 4, based on the measurement values provided by each power meter 10 (10A-10D) installed on the power network 5 and at various locations in the consumer-side system 4, and the target value for the proportion of renewable energy electricity in the total power received per unit time for each piece of equipment 7 set in advance by the user for that piece of equipment 7 (hereinafter referred to as the renewable energy proportion target value).

In practice, the electricity-derived management device 8 can purchase environmental value certificates for the amount of renewable energy required from outside via the network 11 when necessary.

The electricity-derived management device 8 is also sequentially provided with the measured values (voltage values and/or current values) of the renewable energy electricity output from the corresponding renewable energy power generation facility 2 from each first power meter 10 (10A) installed between each renewable energy power generation facility 2 and the power network 5 via a network 11 such as the Internet.

The customer-side system 4 further includes a second power meter 10 (10B) that measures the total amount of power supplied to the customer-side system 4 via the power network 5, a third power meter 10 (10C) that measures the amount of renewable energy power output from the renewable energy power generation equipment 6 in the customer-side system 4, and a fourth power meter 10 (10D) that corresponds to each equipment 7 and measures the amount of power received by the corresponding equipment 7. The measurement values of these second to fourth power meters 10 (10B to 10D) are sequentially provided to the electricity-derived management device 8.

In addition, in the case of this embodiment, the user can use the setting screen 30 described later in FIG. 4 to set, for each piece of equipment 7, the above-mentioned renewable energy ratio target value for that piece of equipment 7 and the time period during which that renewable energy ratio target value should be achieved, etc., in the electricity-derived management device 8.

The electricity-derived management device 8 then controls the proportion of renewable energy electricity in the power received by each piece of equipment 7 by linking the renewable energy electricity contained in the electricity supplied from the power grid with the electricity equivalent to the purchased environmental value certificate, based on the measurement values provided by the first to fourth power meters 10 (10A to 10D).

In addition to or instead of purchasing an environmental value certificate, the electricity-derived management device 8 controls the proportion of renewable energy electricity in the electricity received by the equipment 7 by causing the renewable energy power generation equipment 6 in the consumer-side system 4 to generate renewable energy or discharging renewable energy from the storage battery, as necessary.

(2) Configuration of the Electric Power Management Device Fig. 2 shows a configuration example of the electric power management device 8. As shown in Fig. 2, the electric power management device 8 is configured from a general-purpose computer device including a CPU (Central Processing Unit) 20, a main memory device 21, an auxiliary memory device 22, a network interface 23, an input device 24, and a display device 25.

The CPU 20 is a processor that controls the overall operation of the electricity-derived management device 8. The main memory device 21 is composed of, for example, a semiconductor memory, and is used as a work memory for the CPU 20. The electricity-derived management program 26, which will be described later, is read from the auxiliary memory device 22 to the main memory device 21 when the electricity-derived management device 8 is started up or when necessary, and is stored in the main memory device 21.

The auxiliary storage device 22 is composed of a large-capacity non-volatile storage device such as a hard disk device, SSD (Solid State Drive) or flash memory, and is used to store various programs and data for long periods of time. The environmental value certificate database 27 and the electricity receiving history information management database 28 are also stored and maintained in this auxiliary storage device 22.

The environmental value certificate database 27 is a database for managing and storing environmental value certificates purchased by the electricity-derived management device 8 from outside via the network 11, and the electricity receiving history information management database 28 is a database for storing information on the electricity receiving history for each time period of each facility 7 in the consumer-side system 4 as evidence. The information stored in the environmental value certificate database 27 and the electricity receiving history information management database 28 can be displayed on the display device 25 or printed out by a printer (not shown) when necessary.

The network interface 23 is composed of, for example, a NIC (Network Interface Card) and performs protocol control when the power-derived management device 8 communicates with the first power meter 10 (10A) and other devices via the network 11.

The input device 24 is composed of a keyboard, a mouse, etc., and is used when the user inputs various settings, etc., to the electricity-derived management device 8. The display device 25 is composed of a liquid crystal display, an organic EL (Electro-Luminescence) display, etc., and is used to display various screens such as the setting screen 30 (FIG. 4) described later and necessary information.

An example of the configuration of the electricity receiving history information management database 28 is shown in FIG. 3. As shown in FIG. 3, the electricity receiving history information management database 28 has a table structure including a time period column 28A, a facility ID column 28B, a received electricity amount column 28C, a renewable energy electricity amount column 28D, and a renewable energy electricity amount column 28E corresponding to the purchase of an environmental value certificate. In the electricity receiving history information management database 28, one row corresponds to the history information of received electricity in the corresponding time period of one facility 7 (hereinafter, this is referred to as electricity receiving history information).

The time period column 28A stores the time period during which the electricity receiving history information for that row was obtained, and the equipment ID column 28B stores the identifier (equipment ID) of the equipment 7 that is the subject of the electricity receiving history information for that row. The received electricity amount column 28C stores the amount of electricity per unit time received by the equipment 7 corresponding to the corresponding time period, and the renewable energy electricity amount column 28D stores the amount of renewable energy electricity out of that amount of electricity.

In addition, the renewable energy power amount column 28E corresponding to the purchase of an environmental value certificate stores the amount of renewable energy power stored in the renewable energy power amount column 28D that corresponds to the amount of renewable energy power purchased by the environmental value certificate.

(3) Configuration of the setting screen Fig. 4 shows an example of the configuration of the above-mentioned setting screen 30 that can be displayed by a predetermined operation on the display device 25 (Fig. 2) of the electricity-derived management device 8. This setting screen 30 is a screen for setting various requirements for each facility 7 in the consumer-side system 4, such as the proportion of renewable energy electricity in the total received electricity per unit time of the facility 7.

In practice, the setting screen 30 is provided with a target facility ID specification field 31, a target time period specification field 32, a target renewable energy rate specification field 33, a grid power renewable energy content registration field 34, multiple first priority specification fields 35, and multiple second priority specification fields 36, as well as a setting button 37.

The user can then operate the input device 24 (Figure 2) to input desired values into the target equipment ID designation field 31, the target time period designation field 32, the target renewable energy rate designation field 33, the grid power renewable energy content registration field 34, the first priority designation field 35, and the second priority designation field 36, thereby setting various requirements for each piece of equipment 7.

Specifically, on the setting screen 30, by inputting the identifier (equipment ID) of the desired equipment 7 in the target equipment ID specification field 31, the equipment (hereinafter referred to as the designated equipment) 7 can be specified as the target for the various requirements to be set at that time.

In addition, on the setting screen 30, by inputting a desired time period in the target time period specification field 32, that time period (hereinafter referred to as the specified time period) can be specified as the time period during which the electricity-derived management device 4 controls the proportion of renewable energy electricity in the received electricity of the specified equipment 7.

Furthermore, on the setting screen 30, by inputting a desired numerical value into the target renewable energy rate specification field 33, the numerical value can be specified as the target renewable energy ratio value for the specified equipment 7 during the specified time period.

Furthermore, on the setting screen 30, the current proportion of renewable energy power contained in the power supplied from the power grid to the consumer-side system 4 via the power network 5 (FIG. 1) can be input into the grid power renewable energy content registration field 34, and the proportion can be set in the power-derived management device 8. However, when this proportion is unknown, the grid power renewable energy content registration field 34 may be left blank.

In addition, on the setting screen 30, by inputting different numbers from the serial numbers starting with 1 into each of the first priority specification fields 35, it is possible to specify the order (priority) of carrying out the proportion increase process associated with each of these first priority specification fields 35 as the process to be executed by the electricity-derived management device 8 when the proportion of renewable energy in the total received power per unit time of the specified equipment 7 in the specified time period is less than the renewable energy proportion target value (hereinafter, this is called the proportion increase process).

In the example of Figure 4, the rate increase process includes a process for purchasing environmental value certificates for the required amount of renewable energy electricity ("purchase environmental value certificate"); a process for increasing the output of the renewable energy power generation equipment 6 (Figure 1) in the consumer-side system 4 ("increase output of self-installed renewable energy equipment"); a process for controlling the storage battery (equipment 7) that stores renewable energy electricity so that it discharges to the transmission line 9 ("power supply from storage battery"); and a process for reducing the received power of the designated equipment 7 by, for example, lowering the operating rate of the designated equipment 7 ("reducing received power").

Incidentally, the proportion increase process of "power supply from a storage battery" numerically increases the proportion of renewable energy power in the total power received per unit time of the designated equipment 7 by assuming that all renewable energy power output from the storage battery is supplied to the designated equipment 7, but does not actually supply all renewable energy power output from the storage battery to the designated equipment 7. However, it is also possible to supply renewable energy power directly from the storage battery to the designated equipment 7. The same applies to other proportion increase processes.

In addition, on the setting screen 30, by inputting different numbers from a sequence number starting with 1 into each of the second priority specification fields 36, it is possible to specify the order (priority) of carrying out the proportion reduction process associated with each of these second priority specification fields 36 as the process to be executed by the electricity-derived management device 8 when the proportion of renewable energy in the total received power per unit time of the specified equipment 7 in the specified time period becomes equal to or exceeds the renewable energy proportion target value (hereinafter, this is referred to as the proportion reduction process).

In the example of Figure 4, the rate reduction processes available include a process of selling environmental value certificates for the surplus renewable energy electricity ("sale of environmental value certificates"), a process of reducing the output of the renewable energy power generation equipment 6 (Figure 1) in the consumer-side system 4 ("reducing output of self-installed renewable energy equipment"), a process of allocating the surplus renewable energy electricity to other equipment 7 ("allocate to other equipment"), a process of increasing the power received by the designated equipment 7 by increasing the operating rate of the designated equipment 7 ("reducing received power"), and doing nothing.

Incidentally, the proportion reduction process of "allocating to other equipment" numerically reduces the proportion of renewable energy electricity in the total power received per unit time of the designated equipment 7 by regarding the surplus renewable energy electricity as having been allocated to the other equipment 7, and does not actually allocate the renewable energy electricity included in the power received by the designated equipment 7 to the other equipment 7. However, for example, in a case where renewable energy electricity is supplied directly to the designated equipment 7 from a storage battery that stores renewable energy electricity, the renewable energy electricity actually supplied from the storage battery may be allocated to the other equipment 7. The same applies to other proportion reduction processes.

Then, on the setting screen 30, by specifying each of the requirements such as the designated equipment 7, the designated time period, and the target renewable energy ratio as described above, and then clicking the setting button 37, these details can be registered in the electricity-derived management device 8 as settings for adjusting the ratio of renewable energy electricity to the total received electricity per unit time of the designated equipment 7.

(4) Electricity-derived management processing Fig. 5 shows the flow of a series of processes (hereinafter, this is called electricity-derived management processing) performed by the CPU 20 (Fig. 2) of the electricity-derived management device 8 executing the above-mentioned electricity-derived management program 26 (Fig. 2) stored in the main memory device 21 (Fig. 2). The CPU 20 controls the proportion of renewable energy electricity in the total received electricity of each facility 7 in the consumer-side system 4 according to the processing procedure shown in Fig. 5.

In practice, when various requirements such as the renewable energy ratio target value are set for at least one piece of equipment 7 using the setting screen 30 as described above, the CPU 20 starts the electricity-derived management process shown in FIG. 5, and first obtains the measured values of electricity transmitted from each of the first to fourth power meters 10 (10A to 10D) (S1).

Next, the CPU 20 selects one of the facilities 7 in the consumer-side system 4 for which a renewable energy ratio target value is set, the facility 7 for which the current time falls within the applicable time period specified on the setting screen 30 (Figure 4) (S2), and calculates the proportion of renewable energy electricity in the total received electricity per unit time of the selected facility 7 (hereinafter referred to as the selected facility) (S3).

Specifically, when the renewable energy power generation facility 6 (Fig. 1) in the consumer-side system 4 is not in operation, the CPU 20 calculates the ratio as the numerical value stored in the target renewable energy rate specification field 33 (Fig. 4) of the setting screen 30 described above with reference to Fig. 4.

When the renewable energy power generation equipment 6 in the consumer-side system 4 is operating, the CPU 20 calculates the ratio by multiplying the quotient obtained by dividing the sum of the measurement value of each of the first power meters 10 (10A) and the measurement value of the third power meter 10 (10C) by the sum of the measurement value of the second power meter 10 (FIG. 10B) and the measurement value of the third power meter 10 (10C) by 100.

Next, the CPU 20 judges whether the ratio calculated in step S3 is equal to or greater than the renewable energy ratio target value set for the selected equipment 7 (S4). If the CPU 20 obtains a negative result in this judgment, it starts a ratio increase process for the highest priority specified in each first priority specification field 35 of the setting screen 30 for the selected equipment 7 (S5), and then returns to step S4.

The CPU 20 then switches the percentage increase process executed in step S5 to the percentage increase process with the next highest priority as appropriate, and repeats the loop of steps S3 to S5 and S3 until the percentage calculated in step S3 is equal to or greater than the renewable energy percentage target value set for the selected equipment 7.

When the CPU 20 eventually obtains a positive result in step S4 because the ratio calculated in the previous step S3 becomes equal to or greater than the renewable energy ratio target value set for the selected equipment 7, it transmits a predetermined control signal to the selected equipment 7, thereby causing a display device (not shown) within the selected equipment 7 to display a message indicating that the selected equipment 7 is being operated at the renewable energy ratio target value (S6).

For example, if the selected equipment 7 is an elevator device, the CPU 20 causes a display device provided on an operation panel in the elevator car to display a message indicating that the elevator device is operating at the renewable energy ratio target value ("100%" in FIG. 6(A)), as shown in FIG. 6(A). Also, if the selected equipment 7 is a railroad car or an electric vehicle, the CPU 20 causes a similar message to be displayed on a display device in the railroad car or the electric vehicle. However, it may also be configured to display the current proportion of renewable energy power in the received power per unit time of the selected equipment 7, as shown in FIG. 6(B).

Then, the CPU 20 switches between the rate reduction processes as appropriate, starting with the rate reduction process with the highest priority specified in the second priority specification field 36 of the setting screen 30 for the selected equipment 7, until the rate calculated in the previous step S3 becomes the renewable energy rate target value set for the selected equipment 7 or a value that is a predetermined number of percent greater than the renewable energy rate target value (S7).

Then, the CPU 20 returns to step S1, and thereafter repeats the processing of steps S1 to S7 while sequentially switching the facility selected in step S2 to another facility 7 in the consumer-side system 4 for which a renewable energy proportion target value has been set, in a round-robin manner.

In this way, the CPU 20 controls the proportion of renewable energy power in the received power of each facility 7 for which a renewable energy proportion target value is set.

In parallel with this electricity-derived management process, the CPU 20 selectively records, as evidence, the electricity reception history information of the equipment 7 during the time period when the proportion of renewable energy electricity in the electricity received by the equipment 7 is being controlled in the electricity reception history information management database 28.

(5) Effect of this embodiment According to the power system 1 of this embodiment described above, the proportion of renewable energy power in the power received by the facility 7 can be controlled for each facility 7 in the customer-side system 4, and it can be proven that a certain proportion of the power received by the facility 7 comes from the renewable energy by the power receiving history information of the facility 7. Therefore, compared to the existing situation where environmental activities can only be practiced through the entire business activities, it is possible to practice environmental activities more easily and at lower cost, and thus to further promote environmental activities.

In addition, with this power system 1, messages like those in Figures 6(A) and 6(B) can be displayed on a facility-by-facility basis, allowing the company to proactively promote the fact that it is implementing environmental activities and improve its external image.

(6) Application Examples of the Technology According to the Present Embodiment FIGS. 7 to 11 show application examples of the technology in which the above-described electric power origin management device 8 controls the proportion of renewable energy electric power in the received electric power to various systems.

First, FIG. 7 shows an example of a case where a train 40, which is one of the "facilities" in a railway system, is partially operated on 100% renewable energy power. In this example, three trains 40 (40A-40C) receive power via overhead lines 41, and all power received (consumed) by one of these trains 40 (40A) located in a certain power supply area is linked to renewable energy power. In this way, by allocating renewable energy power to the received power (power consumption) of a specific train 40, it is possible to utilize limited renewable energy power and promote the operation of train 40 on 100% renewable energy power.

Figure 8 also shows an example of a case where a production line 42, which is one of the "equipment" in a factory, is partially operated using 100% renewable energy electricity. In this example, three production lines 42 (42A-42C) receive power, and all of the power received (consumed) by one of these production lines 42 (42A) is linked to renewable energy electricity. By allocating renewable energy electricity to the received power (power consumption) of a specific production line 42 in this way, there is an advantage in that limited renewable energy electricity can be used to ship products to companies that, for example, require that products be manufactured using 100% renewable energy electricity as an acceptance condition.

Furthermore, FIG. 9 shows an example of a case where multiple rechargeable guide robots 43 that are installed as one of the "facilities" in an airport or the like to provide route guidance and other types of guidance are partially operated on 100% renewable energy power. In this example, all of the charging power of one guide robot 43 (43A) within the movement area of three guide robots 43 (43A-43C) is linked to renewable energy power. By allocating renewable energy power to the charging power of a specific guide robot 43 in this way, there is the advantage that limited renewable energy power can be used to actively appeal to tourists visiting Japan about Japan's high environmental awareness and advanced technology.

On the other hand, FIG. 10 shows an example of a case where the electricity consumed on each floor 45 (45A-45E) of a hotel 44 is partially covered by 100% renewable energy electricity. In this example, all electricity consumed on one floor 45 (45E) of the hotel 44 is linked to renewable energy electricity. By allocating renewable energy electricity to all electricity consumed on a specific floor 45 in this way, the hotel 44 can publicize to the outside world that it is carrying out environmental activities, which is expected to attract more customers, and guests can also benefit from participating in environmental activities on an individual level.

Figure 11 also shows an example of a case where an elevator device 46, which is one of the "equipment" in a building such as an office building, hotel, or commercial facility, is partially operated with 100% renewable energy power. In this example, all the power received (consumed) by one elevator device 46 (46A) of the three elevator devices 46 (46A-46C) is linked to renewable energy power. By allocating renewable energy power to the power received (power consumption) of a specific elevator device 46 in this way, the owner of the building can expect to attract customers by publicly promoting his or her environmental activities, and has the advantage of being able to participate in environmental activities at an individual level. The same can be applied to escalator devices instead of or in addition to the elevator device 46.

(7) Other embodiments In the above-described embodiment, the renewable energy power generation equipment 6 in the customer-side system 4 is described as being configured from solar power generation panels installed on the side or roof of a building such as a building or a factory, or on a vehicle, etc. However, the present invention is not limited to this and can be widely applied to renewable energy power generation equipment such as a wind power generation facility installed on the premises of a factory, or a customer's solar power generation farm or wind farm installed in another location outside the premises.

In the above embodiment, an example of the equipment 7 is an electric vehicle, but the present invention is not limited to this, and the present invention can be widely applied to cases where the equipment 7 is a moving body that uses electricity as a driving source, such as an electric motorcycle or a mobile robot other than an electric vehicle.

Furthermore, in the above embodiment, the priority of each rate increase process and each rate decrease process can be set separately for each piece of equipment 7, but the present invention is not limited to this, and the priority of each rate increase process and each rate decrease process can be set in the same way collectively for all or some of the pieces of equipment 7.

Furthermore, in the above-mentioned embodiment, a case has been described in which one electricity-based management device 8 is provided for one consumer-side system 4, but the present invention is not limited to this, and multiple consumer-side systems 4 may be controlled by one electricity-based management device 8.

Furthermore, in the above-mentioned embodiment, the case where the types of percentage increase processing and percentage decrease processing described above in FIG. 4 are prepared as the percentage increase processing and percentage decrease processing are described, but the present invention is not limited to this, and various other types of percentage increase processing and percentage decrease processing may be prepared.

Furthermore, in the above-mentioned embodiment, the proportion of renewable energy electricity in the received power can be controlled on a per-facility basis by inputting the identifier (facility ID) of the desired facility 7 in the target facility ID specification field 31 on the setting screen 30 described above with reference to FIG. 4. However, the present invention is not limited to this. For example, it is also possible to specify an area consisting of multiple facilities (a railway power supply area, an area where electrically powered mobile objects move, a factory with a production line, a hotel floor, etc.) on the setting screen 30, thereby making it possible to control the proportion of renewable energy electricity in the area. In this way, even when it is unknown what kind of facilities are present in an area, it is possible to control the proportion of renewable energy electricity in the received power of each facility in the area on an area-by-area basis.

Furthermore, in the above-mentioned embodiment, the message described above with reference to Figures 6(A) and 6(B) is displayed on the equipment 7 that controls the proportion of renewable energy electricity in the received electricity, but the present invention is not limited to this, and such a message may be displayed in a location other than the equipment 7, such as at the entrance to a building, for example.

The present invention can be widely applied to various systems that have equipment that operates based on power supplied from a power grid.

1...Power system, 2, 6...Renewable energy power generation equipment, 3...Non-renewable energy power generation equipment, 4...Demand side system, 7...Equipment, 8...Power management device, 10, 10A-10D...Power meter, 20...CPU, 26...Electricity-derived management program, 30...Settings screen.

Claims (5)

A power information management system including a management device that manages information on received power of a facility including renewable energy power and non-renewable energy power, and a display device,
The management device includes:
A ratio of renewable energy power in the received power for the target period for each facility is displayed on the display device in association with the facility ,
The amount of power received by the facility, the amount of power of the renewable energy power included in the amount of received power, and the amount of power of the renewable energy power that corresponds to the amount of purchased environmental value certificates among the amount of power of the renewable energy power are associated and managed in a power reception history information management database, and the information stored in the power reception history information management database is displayed when necessary.
A power information management system comprising: An environmental value certificate database is provided to manage and store environmental value certificates;
The electric power information management system according to claim 1, characterized in that the information stored in the environmental value certificate database is displayed on the display device. The management device includes:
The power information management system according to claim 1 or 2, characterized in that, when the proportion of the renewable energy power in the received power per unit time of the equipment during a specified time period is less than a target value, the proportion of the renewable energy power in the received power per unit time of the equipment is increased by controlling discharge from a storage battery that stores the renewable energy power. The management device includes:
The power information management system according to claim 1 or 2, characterized in that when a proportion of the renewable energy power in the received power per unit time of the equipment during a specified time period is equal to or greater than a target value, if the renewable energy power is supplied to the equipment from a storage battery that stores the renewable energy power, the renewable energy power supplied from the storage battery is allocated to other equipment, thereby reducing the proportion of the renewable energy power in the received power per unit time of the equipment. A power information management method executed by a power information management system including a management device that manages information on received power of a facility including renewable energy power and non-renewable energy power, and a display device,
a step of causing the management device to display on the display device the proportion of renewable energy electricity in the received electricity for the target period of the equipment unit in association with the equipment, while managing in an electricity receiving history information management database the amount of electricity received by the equipment, the amount of renewable energy electricity included in the amount of received electricity, and the amount of renewable energy electricity equivalent to the amount of renewable energy electricity purchased for an environmental value certificate among the amount of renewable energy electricity in association with each other, and displaying the information stored in the electricity receiving history information management database when necessary .

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