JP2023068356A - Energy saving support system - Google Patents

Abstract

To provide an energy saving support system capable of motivating users for energy saving.SOLUTION: An energy saving support system includes: a monitor device 3 that has at least measuring functions 31 and 33 for measuring an amount of purchased power and an amount of power generated by a power generation facility 4 for each predetermined period, and a communication function 53; and a management server 2 that is connected to the Internet communication network and manages a user's standard rate for each predetermined period, which is set for each user and is calculated based on values of a plurality of conditions including at least building performance of a house of the user. The management server 2 includes: calculation means for calculating a payment amount from the amount of generated power and the amount of purchased power; and difference amount calculation means for calculating the difference between the standard rate and the payment amount.SELECTED DRAWING: Figure 3

Description

The present invention relates to an energy saving support system for reducing energy consumption of electric power used in a house.

In recent years, in order to prevent global warming, the need to reduce energy consumption has been called for not only in companies but also in houses. Especially for electricity, the main energy-saving measures are raising awareness of saving electricity and promoting the introduction of power generation equipment that uses renewable energy that does not emit greenhouse gases. As power generators using renewable energy, photovoltaic power generation is relatively easy to introduce because it can be installed even in a limited space in a house, and its spread at the individual level is urgent.

By the way, in recent years, electricity retailers have become able to sell electricity to general households in addition to conventional electric power companies that generate and distribute electricity. In addition to the business of selling power generation equipment, the company has recently been involved in the business of photovoltaic power generation systems, including the sale of power generation equipment. Electricity retailers purchase the electricity generated by photovoltaic generators, offsetting the installation costs in installments to reduce the cost burden on users and promote the introduction of power generators. is deployed.

The user can confirm the price of electricity sold by the user and the price of purchased power purchased by the user from the usage details sent from the electricity retailer. In addition, it is also possible to check the amount of power generated by the power generator per month and the price of purchased power using a monitor device installed in a house (see Patent Document 1, for example).

JP 2014-166077 A (page 12, FIG. 6)

As described above, in the energy saving support system as disclosed in Patent Document 1, the user can grasp the amount of power generated by the power generator using renewable energy. Also, if the electricity bill for sold electricity exceeds the installment payment, the effect of energy saving can be grasped to some extent by comparing the deducted payment bill with the previous month's bill. However, by comparing with the previous month, we can only understand the energy-saving effect caused by external factors such as the hours of sunshine brought about by the amount of power generated by the power generator, and the energy-saving effect caused by the power-saving actions taken in our daily lives. is difficult to evaluate, and there is a problem that it is not sufficient to motivate users for energy conservation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an energy saving support system capable of motivating users to save energy.

In order to solve the above problems, the energy saving support system of the present invention includes:
An energy saving support system for the purpose of reducing the energy consumption of electricity used in a house,
a monitor device having at least a measurement function for measuring the amount of power purchased and the amount of power generated by the power generation device for each predetermined period in a house in which the power generation device is installed, and a communication function;
Individual identification information assigned to each monitor device, personal identification information assigned to each user of a house in which the monitor device is installed, and building performance of at least the user's house set for each user A management server connected to an Internet communication network that links and manages the reference fee for each predetermined period of the user calculated based on the values of multiple conditions including
The management server includes calculation means for calculating a payment amount from the power generation amount measured by the measurement function and the purchased power amount received from the monitor device, and the reference charge linked to the personal identification information of the monitor device. and difference calculation means for calculating the difference between the payment amounts.
According to this feature, the management server outputs the difference between the reference charge of the payment charge calculated for each user and the actual payment charge, which is linked to the individual identification information of the monitor device. In addition to the energy-saving effect caused by external factors such as sunshine hours brought about by the amount of power generated by the power generator, the user can also grasp the energy-saving effect caused by the power-saving action taken by the user from the difference from the standard rate. It is possible to effectively motivate users for energy saving. In particular, since the reference charge is individually calculated based on the values of a plurality of conditions including at least the building performance of the residence of the user, the energy saving effect can be accurately calculated for each user.

When the calculation process by the difference calculation means is completed, the management server performs a notification process of transmitting the calculated difference to the monitor device, and the monitor device displays the received difference on the display means. .
According to this feature, the user can check the difference on the display means of the information terminal installed in the house, and can easily grasp the energy-saving effect resulting from the power-saving action.

The management server is characterized by comprising determination means for determining which of the payment fee and the reference fee is higher.
According to this feature, it is possible to accurately tell the user which of the payment charge and the reference charge is higher.

According to the judgment of the judging means, the management server expresses in words that the difference calculated by the difference calculation means will be compensated when the reference charge is higher than the payment charge, and the reference It is characterized in that, when the payment fee is higher than the fee, the difference calculated by the difference calculation means is presented as a reward.
According to this feature, by displaying the compensation for the difference, the actual amount to be paid is the standard rate, so that a sense of security can be given, and by displaying the difference as a reward, the power generation device It is possible to show that the burden of the monthly payment fee can be reduced by installing the , and to increase the willingness to save power.

The management server is characterized by comprising receiving means for receiving values of a plurality of conditions including the building performance of the user's house via the Internet, and updating the reference rate based on the received values of the conditions. .
According to this feature, when the number of family members is changed or the solar panel is adjusted, the employee in charge of the contract can quickly update the standard rate to the appropriate rate even if the customer is in a remote location.

BRIEF DESCRIPTION OF THE DRAWINGS It is a conceptual diagram which shows the energy-saving support system in Example 1 of this invention. 4 is a conceptual diagram showing a management server; FIG. It is a conceptual diagram showing a monitor device. It is a figure which shows the reference|standard charge calculation page which is a reception means. FIG. 10 is a diagram showing an energy saving effect display when the payment charge is higher than the standard charge; FIG. 10 is a diagram showing an energy saving effect display when the standard charge is higher than the payment charge;

A mode for implementing an energy saving support system according to the present invention will be described below based on an embodiment.

An energy saving support system according to an embodiment will be described with reference to FIGS. 1 to 6. FIG.

FIG. 1 is a conceptual diagram of an energy saving support system, and the energy saving support system 1 includes a management server 2, a monitor device 3 and a power generation device 4 installed in each house.

As shown in FIG. 2, the management server 2 is a server that includes a computing unit 20 such as a CPU, a user database 21, a housing information database 22, and a contract information database 23, and is connected to the Internet. The user database 21, the housing information database 22, and the contract information database 23 do not have to be separate databases, and may be stored in one storage medium as a list that can be referred to. The management server 2 is managed by a contractor (hereinafter referred to as “management contractor”) who received an order for the installation work of the power generator 4 . Note that the management server 2 may be on-premises or in the cloud, or may be composed of a plurality of nodes connected via the Internet.

The management server 2 can calculate and show the monthly electricity bill reduction effect to the user who has signed a contract for the power generator 4 . In this way, the management company shows individual customers that the installation of the power generation device 4 can reduce the burden of monthly payment charges, thereby promoting the acquisition of new contracts including sales of the power generation device 4. The energy saving support system 1 is used.

The manager may be an electric power retailer who can purchase and sell wholesale electric power from the electric power company, or may be a trader who performs the installation work and management work of the power generation device 4 instead of the electric power retailer. In the present embodiment, description will be given by taking as an example the contractor who performs the latter installation work and management work of the power generator 4. FIG.

As shown in FIG. 3, the monitor device 3 includes a meter 31 (measurement function) for measuring the amount of electricity used by the user purchased from the electricity retailer, a PCS device 32 connected to the power generator 4, a PCS device 32 and an information terminal 5. The meter 31 and the power generation side meter 33 are connected to the information terminal 5 via a local area network.

The information terminal 5 incorporates a calculation unit 51 such as a CPU, display means 52, and communication means (communication function) 53 in a housing (not shown). is installed in

The power generation side meter 33 measures the amount of power generated by the power generation device 4, the amount of self-consumption, and the amount of power sold. These pieces of information are sent to the information terminal 5. Similarly, the amount of electricity purchased by the user from the electricity retailer sent to the information terminal 5 from the meter 31 connected to the power grid G (illustrated as a utility pole facility in FIG. 3) is aggregated with

The information terminal 5 is provided with individual identification information, and transmits the individual identification information and electrical information collected from the power generation side meter 33 and the meter 31 to the management server 2 via the Internet every day. Although not described in detail here, the information terminal 5 can cause the display means 52 to display the aggregated electrical information as needed so that it can be browsed.

The management company assigns a user ID, which is unique personal identification information, to each user who has signed a contract for the power generation device 4, and in the user database 21 of the management server 2, at least a preset password, Basic information such as a person's name, the individual identification information of the information terminal 5 installed in the user's house, and the IP address of the individual identification information are recorded in association with the user ID. The unique personal identification information is managed by the management server 2 and distributed to each user at the necessary timing.

In addition, in the housing information database 22, at least condition information such as the address of the house, area per square meter, family structure, etc., standard charges to be described in detail later, electricity information received from the information terminal 5, and the amount of electricity used measured by the meter 31 The information on the payment charge obtained by subtracting the charge for the electricity sold from the amount of electricity purchased per month from the calculated electricity retailer, and the history of the information on the payment charge for the month are associated with the user ID. is recorded.

Further, in the contract information database 23, at least the contract details at the time of contracting the power generation device 4, the total amount of the contract, the installment payment amount for each month, and the information on the balance of the payment in the contract for the power generation device 4 are associated with the user ID. and recorded.

Next, the standard charge recorded in association with the user ID in the housing information database 22 will be described. The standard rate is set by the administrator as an expected value of the payment rate that the user will pay to the electricity retailer on a monthly basis based on multiple conditions of the user's residence when the user makes a contract. This is expected to have a sales effect of indicating to the user that the price to be paid will be reduced by installing the power generation device 4 compared to before installation with the predicted standard price.

In addition, the management company has a contract work support site that can be accessed via the Internet, and the employee in charge of the contract can access the standard charge calculation page (acceptance means) on the support site as shown in FIG. ) 6 to calculate the standard charge. In other words, the reference charge calculation page 6 is a receiving means for receiving values of various conditions. The reference charge calculation page 6 may be a function of the management server 2, or may be operated by another node.

The standard charge calculation page 6 has input forms 61A to 61F for inputting various conditions, and the management server 2 applies the parameters entered in these input forms 61A to 61F to a preset calculation formula to calculate the standard charge. It is calculated. The reference fee calculation page 6 further includes an input field 62 for inputting a user ID and a calculation start button 63 .

The various conditions to be entered include "family size", "tsubo" of the house, "building performance" of the house, "area" where the solar panels that are power generators are installed, and "azimuth" where the solar panels are facing. , is the “tilt angle” of the solar panel.

It goes without saying that the "number of family members" directly relates to the amount of electricity used.

In the input form of "building performance", it is possible to select whether or not it corresponds to the ZEH standard (general housing). Equivalent to ZEH standards refers to those that meet the three required standards for housing insulation performance, energy saving performance, and energy creation. The standard for energy creation is to have facilities for generating renewable energy.

Thermal insulation performance is the performance that makes it difficult for heat to be conducted indoors and outdoors, and thermal insulation performance is expressed by an index called "UA value (outer skin average heat transmission coefficient)". According to the ZEH standard, this UA value must be 0.4 to 0.6 [W/m ² K] or less. It should be noted that the UA value is set to a lower reference value in colder regions.

As for energy-saving performance, the ZEH standard is set to reduce primary energy consumption by 20% or more from standard primary energy consumption through a combination of high insulation in the frame of the house and high-efficiency equipment such as heating and cooling, ventilation, hot water supply, and lighting. ing.

In this way, if it is equivalent to the ZEH standard, it indicates that the design is made to reduce the amount of electricity used, so when the management server 2 calculates the standard charge, A variable will be used that will lower the standard charge.

Regarding the “region” where the solar panel, which is the power generation device 4, is installed, the amount of power generation fluctuates due to weather conditions such as temperature, amount of sunshine, and amount of precipitation. Variables used for calculation are set.

Regarding the "azimuth angle" at which the solar panels are directed, power generation efficiency is highest in the due south direction, but the installation azimuth angle differs depending on the topography and surrounding buildings. Therefore, since the power generation efficiency varies depending on the azimuth angle, a variable is set for each azimuth to be used when calculating the standard charge.

Although 30 degrees is considered ideal for the "tilt angle" of solar panels, the power generation efficiency varies depending on the combination of the azimuth angle and the tilt angle. , variables used when calculating the standard charge are set. In addition, since the latitude differs from region to region, the optimum tilt angle also differs from region to region. Therefore, a variable used when calculating the reference charge is set for the combination of "region" and "tilt angle" as well.

The reference fee calculated by the management server 2 in this manner is associated with the user ID entered in the input field 62 and stored in the housing information database 22 .

Also, when the management server 2 receives the individual identification information and the electrical information from the information terminal 5 , it stores them in the housing information database 22 . Specifically, the amount of electricity purchased from the electricity retailer measured by the meter 31 is updated, and the amount of generated electricity, the self-consumption amount, and the amount of sold electricity that are measured by the power generation side meter 33 are updated. Aggregate on a monthly basis.

Next, the process until the energy saving support system 1 presents the energy saving effect to the user will be explained. First, when the management server 2 completes totaling the amount of purchased electricity, the amount of electricity generated, the amount of self-consumption, and the amount of electricity sold on a monthly basis, the amount of electricity sold measured by the power generation side meter 33 The electricity sales charge for the current month is calculated (calculating means) from the selling price per predetermined unit to the retailer, and additionally, the purchased electricity amount measured by the meter 31 and the predetermined amount from the electricity retailer contracted by the user. The purchased power charge for the current month is calculated (calculating means) from the selling price per unit, and the payment charge is calculated (calculating means) by subtracting the power selling charge from the purchased power charge.

Next, the management server 2 starts calculation processing, refers to the user's reference charge associated with the power generation side meter 33 from the housing information database 22, and calculates the difference between this reference charge and the payment charge ( difference calculation means). The management server 2 also determines whether or not there is a difference between the reference fee and the payment fee, and if there is a difference, determines which of the reference fee and the payment fee is higher (determining means). If the payment charge is higher than the reference charge, the difference is temporarily stored together with the content of the notification, which is character data indicating that the difference will be compensated. Conversely, if the standard fee is higher than the payment fee, the difference is temporarily stored together with the content of the notification, which is character data indicating that the difference is to be rewarded.

Next, the management server 2 refers to the individual identification information and the IP address of the information terminal 5 installed in the user's house to which the power generation side meter 33 is linked, from the user database 21 . Then, communication is performed with respect to the IP address of the information terminal 5, and in addition to the purchased electricity amount, the purchased electricity charge, the amount of power generation, the self-consumption amount, the amount of electricity sold, and the payment charge, the difference between the payment charge and the reference charge is obtained. If there is, the difference and notification contents are transmitted to the information terminal 5 (notification processing).

The information terminal 5 that has received these information causes the display means 52 to display the energy saving effect display 7 as shown in FIG. If there is a difference between the payment charge and the standard charge, the display means 52 displays the difference. A notification content 71 stating "I will do it" is displayed.

Conversely, if the standard charge is higher than the payment charge, a notice content 72 of "A reward will be presented" is displayed next to the display of the difference, as shown in FIG.

In this way, the management server 2 outputs the difference between the reference charge of the payment charge calculated for each user and the actual payment charge, which is linked to the individual identification information of the monitor device 3. In addition to the energy saving effect caused by external factors such as sunshine hours brought about by the amount of power generated by the power generation device 4, the user can also grasp the energy saving effect caused by the power saving action from the difference from the standard charge. It is possible to arouse the user's motivation for energy saving. In particular, since the standard charge is calculated individually based on multiple conditions including at least the building performance of the user, it is possible to accurately grasp the energy-saving effect resulting from power-saving actions for each user. .

Further, when the calculation process by the difference calculation means is completed, the management server 2 performs a notification process of transmitting the calculated difference to the information terminal 5 constituting the monitor device 3, and the information terminal 5 displays the received difference on the display means 52. indicate. Therefore, the user can check the difference on the display means 52 of the information terminal 5 installed in the house, and can easily grasp the energy-saving effect resulting from the power-saving action.

In addition, the management server 2 has a function of displaying the reference charge calculation page 6 as a receiving means for receiving the values of multiple conditions including the building performance of the user's house on an information terminal such as a personal computer or a smartphone connected to the Internet. , and if the employee in charge of the contract changes the value of the condition as necessary, the management server 2 updates the reference fee based on the received value of the condition. Therefore, when the number of family members changes or the solar panels are adjusted, the employee in charge of the contract can quickly update the standard rate to the appropriate rate even if they are in a remote location.

In addition, since the management server 2 has determination means for determining which of the payment fee and the reference fee is higher, it is possible to accurately inform the user of which is higher.

In addition, the management server 2 causes the display means 52 to display a display of compensating for the difference when the standard fee is higher than the payment fee according to the determination of the determination means, and when the payment fee is higher than the standard fee causes the display means 52 to display the display of presenting the difference as a reward. According to this, by displaying the compensation for the difference, the actual amount to be paid is the standard rate, so that a sense of security can be given, and by displaying the difference as a reward, the power generation device 4 It is possible to show that the burden of the monthly payment fee can be reduced by installing the , and to increase the willingness to save power.

Further, when the management server 2 determines that the reference fee is higher than the payment fee by the determination means, the management server 2 performs a process of deducting the difference from the payment balance of the contract for the power generation device 4 as a reward. Specifically, the contract information database 23 is referred to for the balance of payment from the user ID, and a calculation is performed to subtract the difference from the balance of payment. Then, the balance of payment in the contract information database 23 is updated to the amount from which the difference is subtracted. As a result, it is possible to reduce the principal of the installment payment, shorten the repayment period, or reduce the monthly repayment amount. Update each repayment amount.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and any changes or additions within the scope of the present invention are included in the present invention. be

For example, in the above-described embodiment, the reference charge is calculated based on the values of all the conditions entered in the reference charge calculation page 6. However, the present invention is not limited to this. It may be a configuration that can be calculated by a combination of any one of the conditions.

In addition, various conditions for calculating the standard rate can be considered. For example, the number of air conditioners installed instead of the number of people in the family, the total floor area instead of the number of square meters, and the annual average instead of the area It may be the amount of precipitation or the like.

Further, in calculating the reference charge, a seasonal variable may be applied to change the reference charge, in addition to the input conditions.

Also, in calculating the standard fee, apart from the input conditions, for example, the difference between the standard amount and the actual usage amount in the first three months is applied as a variable, and the standard fee from the fourth month onwards fluctuates. may be

In addition, in the above-described embodiment, the management server 2, in addition to the purchased electricity amount, purchased electricity charge, power generation amount, self-consumption amount, sold electricity amount, payment charge, in addition to the payment charge and the reference charge, If there is a price difference, the price difference and the content of the notification are transmitted to the information terminal 5. However, the present invention is not limited to this. .

1 Energy saving support system 2 Management server (calculation means, difference calculation means, determination means)
3 monitor device 4 power generation device 5 information terminal 6 standard charge calculation page (accepting means)
7 Energy saving effect display 20 Calculation unit 21 User database 22 Housing information database 23 Contract information database 31 Meter (measurement function)
33 Power generation side meter (measurement function)
51 calculation unit 52 display means 53 communication means (communication function)
61A~61F Input form 71, 72 Notification content G Power grid

Claims (5)

An energy saving support system for the purpose of reducing the energy consumption of electricity used in a house,
a monitor device having at least a measurement function for measuring the amount of power purchased and the amount of power generated by the power generation device for each predetermined period in a house in which the power generation device is installed, and a communication function;
Individual identification information assigned to each monitor device, personal identification information assigned to each user of a house in which the monitor device is installed, and building performance of at least the user's house set for each user A management server connected to an Internet communication network that links and manages the reference fee for each predetermined period of the user calculated based on the values of multiple conditions including
The management server includes calculation means for calculating a payment amount from the power generation amount measured by the measurement function and the purchased power amount received from the monitor device, and the reference charge linked to the personal identification information of the monitor device. and difference calculation means for calculating the difference between the payment amounts. When the calculation process by the difference calculation means is completed, the management server performs a notification process of transmitting the calculated difference to the monitor device, and the monitor device displays the received difference on the display means. The energy saving support system according to claim 1. 3. The energy saving support system according to claim 2, wherein said management server comprises determination means for determining which of said payment charge and said reference charge is higher. According to the judgment of the judging means, the management server expresses in words that the difference calculated by the difference calculation means will be compensated when the reference charge is higher than the payment charge, and the reference 4. The energy saving support system according to claim 3, wherein when the payment charge is higher than the charge, the difference calculated by the difference calculating means is presented as a reward. The management server is characterized by comprising receiving means for receiving values of a plurality of conditions including the building performance of the user's house via the Internet, and updating the reference rate based on the received values of the conditions. The energy saving support system according to any one of claims 1 to 4.

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