KR102526109B1 - Method of sharing the reduced power bill by using an ESS device - Google Patents

Abstract

Provided is a method of sharing electricity rates saved by using an ESS (Energy Storage System) device. In a method according to some embodiments of the present invention, as service contract information between a service provider and a user, a monthly billing rate for a service provided by a service provider to a user and a sharing ratio of electricity cost saved by using an ESS device are calculated. Receiving service contract information including from a provider terminal, receiving monthly power usage data of the contracted space from a user terminal electrically connected to an ESS device installed in the contracted space according to the service contract, Based on the monthly power usage data step of calculating the first rate according to the progressive rate system and the second rate according to the time-based rate system, determining the refund amount based on the service contract information among the reduced rates that are the difference between the first and second rates, and the determined refund amount Incorporating the step of determining the billing rate for the next month by reflecting the.

Description

Method of sharing the reduced power bill by using an ESS device}

The present invention relates to a system and method in which a service provider and a user share electricity rates saved by using an ESS device, and more particularly, to a contract for supplying a service or product provided by a service provider and using an ESS device It relates to a system and method combining a contract for sharing a fee that is reduced by doing so.

The conventional electricity tariff system in Korea is divided into residential, general, educational, industrial, etc. according to the purpose of electricity use, and applied differentially, and the increasing block rate pricing, or progressive system, is applied to residential electricity rates . For example, a progressive system was applied in which rates increased according to the increase in usage by dividing into three levels: 0-200 kWh (Level 1), 201-400 kWh (Level 2), and 401 kh or higher (Level 3).

The progressive system applied to residential electricity rates has consistently raised the issue of equity, such as high-income single-person households using lower rates than low-income multi-person households, and excessively high rates compared to other countries in the case of large-use households. , Accordingly, from July 2021, the residential electricity rate system will be reorganized into a Time-of-Us (TOU) rate system and applied. The time-of-day rate system is classified into three seasons (summer, spring, autumn, and winter), and is divided into light load, medium load, and maximum load according to power usage, and induces consumers to consume electricity reasonably on their own according to affordable time slots according to power demand. It is a rate plan that

An energy storage device, that is, an ESS (Energy Storage System) device refers to a storage device that stores excessively produced power from a power plant and transmits power when there is a temporary power shortage. The ESS device includes a battery that stores electricity and related components such as a power conditioning system (PCS), an energy management system (EMS), and a battery management system (BMS) for efficiently managing the battery.

When an ESS device is used in a general household, it is possible to reduce electricity bills by charging electricity in the low-load section where rates are low under the time-of-day rate system and discharging and using the charged electricity in the peak-load or mid-load section. There is a limit to the cost burden of purchasing an ESS device in each household. In addition, when the ownership of the ESS device is transferred through a contract with a business that sells the ESS device, it is difficult to grasp the status of the ESS device, such as performance, efficiency, and failure. Or there is a limitation that it is not flexible to replace.

A technical problem to be solved by the present invention is to provide a system and method through which a customer can receive a benefit of reducing electricity rates through an ESS without the burden of constructing an ESS.

Another object of the present invention is to provide a system and method capable of reducing monthly charges through a combination of a service for charging a fixed or flexible monthly fee to a user and an installation and management service for an ESS device.

The technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above technical problem, a method for sharing electricity costs, which is performed by a server according to some embodiments of the present invention and is saved by using an ESS (Energy Storage System) device, includes service contract information between a service provider and a user As a step of receiving service contract information including a monthly billing fee for a service provided to a user by a service provider and a sharing ratio of electricity charges saved by using an ESS device from a provider terminal, in a contract space according to a service contract Receiving monthly power consumption data of the contract space from a user terminal electrically connected to the installed ESS device, based on the monthly power consumption data, calculating a first rate according to a progressive rate system and a second rate according to a time-based rate system It may include determining a refund amount based on service contract information among the reduced rates, which is the difference between the first and second rates, and determining a charge for the next month by reflecting the determined refund amount.

According to some embodiments, the method may further include transmitting a transfer request for the first charge to the service provider to the user terminal and transmitting a payment request for the second charge to the provider terminal.

According to some embodiments, the service contract information includes information on a sharing ratio that is set differently depending on whether the reduced power price is equal to or greater than a first criterion, and the server determines the comparison result between the reduced power price and the first criterion. Based on this, the amount of refund can be determined.

According to some embodiments, the service contract information includes information on a sharing ratio that is set differently depending on whether or not the ratio of the electricity cost saved to the monthly charge is equal to or greater than the second criterion, and the server includes The refund amount may be determined based on the comparison result of the ratio of the electricity price and the second criterion.

According to some embodiments, the service contract information includes information on a sharing ratio that is set differently depending on whether the charge-to-discharge efficiency of the ESS device is equal to or greater than the third criterion, and the server determines the charge-to-discharge efficiency of the ESS device and the 3 The refund amount can be determined based on the comparison results of the criteria.

According to some embodiments, the step of determining the charge for the next month may include determining points corresponding to the determined refund amount, and the server may provide the determined points to the user terminal together with the charge for the next month.

According to some embodiments, the service contract information further includes product information purchased by the user, prepaid payment information, balance information, and information about a payment period of the balance, and the step of determining the billing fee for the next month may reflect the refund amount to determine the remaining balance. It may include determining the billing rate for the next month.

According to some embodiments, the service contract information includes information on a sharing ratio that is set differently depending on whether the balance payment period has passed, and the server may determine the refund amount based on whether the balance payment period has passed.

According to some embodiments, a user terminal may include a plurality of terminals electrically connected to ESS devices installed in each of a plurality of households.

At this time, the step of charging the first charge of each of the plurality of households to each terminal by the manager terminal electrically connected to each of the terminals and the step of paying the second charge of each of the plurality of households in the manager terminal. can include more.

In this case, determining the refund amount may include calculating a difference between the reduction fee and the predefined management fee, and determining the refund amount based on the difference between the reduction fee and the management fee and service contract information.

According to some embodiments, in the service contract information, the service provider is responsible for normal maintenance within the service period for the ESS device, and the ESS device is collected by the service provider when the service contract between the service provider and the user is terminated. , it may include information requesting a separate maintenance fee for physical damage to the ESS device due to the user's fault within the service contract period.

Details of other embodiments are included in the detailed description and drawings.

1 is a block diagram illustrating a system for sharing a reduced power rate using an ESS device according to some embodiments of the present invention.
2 is a block diagram for explaining the configuration of an ESS device.
3 is a block diagram for explaining the configuration of a server.
4 is a flow chart illustrating a method for sharing a reduced power fee using an ESS device according to some embodiments of the present invention.
5 is a diagram for explaining service contract information between a service provider and a user.
6 is a flowchart for explaining an embodiment of determining a refund amount based on a reduced fee by an ESS device.
7 is a flowchart illustrating an embodiment of determining a refund amount based on a ratio of a monthly billing fee to a reduced fee.
8 is a flowchart illustrating an embodiment of determining a refund amount based on a charge-to-discharge efficiency of an ESS device.
9 is a flow chart illustrating an embodiment of determining a refund amount based on whether a product balance payment period has elapsed.
10 is a diagram for explaining an embodiment in which an ESS device installed in a plurality of places and a plurality of user terminals communicating with each ESS device are applied.
11 is a diagram for explaining an embodiment in which an ESS device installed in a plurality of places and a user terminal communicating with the plurality of ESS devices are applied.
FIG. 12 is a flowchart for explaining refund amount determination in the embodiment of FIG. 11 .

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that this is not intended to limit the present invention to the specific embodiments, but to cover various modifications, equivalents, and/or alternatives of the embodiments of the present invention.

The conventional electricity tariff system in Korea is divided into residential, general, educational, industrial, etc. according to the purpose of electricity use, and applied differentially, and the increasing block rate pricing, or progressive system, is applied to residential electricity rates . For example, a progressive system was applied in which rates increased according to the increase in usage by dividing into three levels: 0-200 kWh (Level 1), 201-400 kWh (Level 2), and 401 kh or higher (Level 3).

The progressive system applied to residential electricity rates has consistently raised the issue of equity, such as high-income single-person households using lower rates than low-income multi-person households, and excessively high rates compared to other countries in the case of large-use households. , Accordingly, from July 2021, the residential electricity rate system will be reorganized into a Time-of-Us (TOU) rate system and applied. The time-of-day rate system is classified into three seasons (summer, spring, autumn, and winter), and is divided into light load, medium load, and maximum load according to power usage, and induces consumers to use electricity reasonably on their own according to affordable time slots according to power demand. It is a rate plan that

An energy storage device, that is, an ESS (Energy Storage System) device refers to a storage device that stores excessively produced power from a power plant and transmits power when there is a temporary power shortage. The ESS device includes a battery that stores electricity and related components such as a power conditioning system (PCS), an energy management system (EMS), and a battery management system (BMS) for efficiently managing the battery.

When an ESS device is used in a general household, it is possible to reduce electricity bills by charging electricity in the low-load section where rates are low under the time-of-day rate system and discharging and using the charged electricity in the peak-load or mid-load section. There is a limit to the cost burden of purchasing an ESS device in each household. In addition, when the ownership of the ESS device is transferred through a contract with a business that sells the ESS device, it is difficult to grasp the status of the ESS device, such as performance, efficiency, and failure. Or there is a limitation that it is not flexible to replace.

Hereinafter, with reference to FIGS. 1 to 12 , a system and method for sharing electricity rates that are reduced by using an ESS device according to some embodiments of the present invention will be described.

1 is a block diagram for explaining a system for sharing a reduced electricity rate using an ESS device according to some embodiments of the present invention, FIG. 2 is a block diagram for explaining the configuration of an ESS device, and FIG. 3 shows the configuration of a server. It is a block diagram for explanation.

1 to 3 , a system 10 according to some embodiments of the present invention may include a server 100, a provider terminal 200, a user terminal 300, and an ESS device 400.

The server 100 performs communication with the provider terminal 200 and the user terminal 300, and the overall system 10 of sharing the service according to the service contract between the provider and the user and the reduced fee using the ESS device 400 can manage According to some embodiments, server 100 may be built and managed by a service provider.

According to some embodiments, the server 100 may include a communication unit 110 , a processor 120 , a RAM 130 and a memory 140 .

The communication unit 110 may connect communication between the server 100 and the provider terminal 200 and the user terminal 300 . The communication unit may perform certain network communication (e.g. Internet, local area network (LAN), wire area network (WAN), telecommunication network, cellular network, satellite network or plain old telephone service (POTS), etc.) or wired communication protocol (e.g. USB (universal serial bus), HDMI (high definition multimedia interface), etc.) may be supported.

The processor 120 may receive commands from other components of the server 100 through the data bus 150, interpret the received commands, and perform calculations or data processing according to the interpreted commands.

RAM 130 and memory 140 may store instructions or data received from or generated by processor 120 or other components of server 100 . According to some embodiments, the RAM 130 or the memory 140 may include a program memory and a data memory, and programs for controlling general operations of the portable terminal are stored in the program memory. According to some embodiments, RAM 130 or memory 140 may be Compact Flash (CF), Secure Digital (SD), Micro Secure Digital (Micro-SD), Mini Secure Digital (Mini-SD), Extreme Digital (xD). ) and an external memory such as Memory Stick. Also, the RAM 130 or the memory 140 may include a disk storage device such as a hard disk drive (HDD) and a solid state disk (SSD).

The data bus 150 may be a circuit that connects the aforementioned components to each other and transfers communication (eg, a control message) between the aforementioned components.

The provider terminal 200 is a terminal controlled by a service provider, and may be a terminal driven by a provider that concludes a service contract including sharing of cost savings by the user and the ESS device 400 and provides the service. . The provider terminal 200 may be implemented in the form of a terminal capable of accessing the server 100 through a communication network. For example, it may be implemented in a computer, laptop, smart phone, tablet, etc., but the embodiment to which the present invention is applied is not limited thereto. In addition, the provider terminal 200 may be implemented to be included in the server 100 . According to some embodiments, the provider terminal 200 may be a terminal driven by an Internet service provider providing Internet and IPTV services. In this case, the service provider installs the set-top box and ESS device 400 used for the Internet service in the home of the user (contractor) at the cost and ownership of the service provider, maintains and manages them during the contract period, and after the contract period can be recovered However, it is only one embodiment of the present invention that the provider terminal 200 is driven by an Internet service provider, and business operators that sell home appliances, etc., card companies that issue credit cards that pay annual fees, long-term leases or long-term installments Of course, it can also be applied to a terminal driven by a credit service provider providing sales.

The user terminal 300 is a terminal that communicates with the ESS device 400 and the server 100 arranged in a place according to the contract between the supplier and the user, and can be implemented to be included in the ESS device 400 unlike shown. there is. For example, the user terminal 300 may be implemented to be included in the EMS 410 of the ESS device 400.

The ESS device 400 is installed in the user's space according to the service contract between the supplier and the user, and includes an Energy Management System (EMS) 410, a Power Conditioning System (PCS) 420, and a Battery Management System (BMS) 430. and a battery 440 .

The EMS 410 controls the PCS 420 to manage power management of the ESS device 400 . The EMS 410 predicts power consumption in a facility where the corresponding ESS device 400 is installed, and controls the PCS 420 to operate the power. According to some embodiments, the EMS 410 may receive commands from the server 100 through the user terminal 300 and control charging and discharging of the battery 440 through the PCS 420 .

According to some embodiments, the EMS 410 includes a wired or wireless communication module (not shown) enabling communication with the user terminal 300 or the server 100 . The communication module may support at least one of various communication methods such as wired local area network (LAN), wireless LAN, Wi-Fi, Bluetooth, and Wi-Fi Direct. In an embodiment of the present invention, a communication method between the user terminal 300 or the server 100 and the ESS device 400 is not limited to a specific communication.

The PCS 420 may perform power management by supplying energy supplied through the power grid to a power load or charging the battery 440 and discharging the battery 440 and supplying the stored energy to the power load or the power grid. . A power load is a target facility that receives commercial power supplied from a power plant through a power grid, and includes facilities such as general buildings, apartments, and factories. According to some embodiments, the PCS 420 may charge commercial power with the battery 440 and then discharge it to a corresponding target facility if necessary.

The BMS 430 is a component for managing the battery 440, and controls the amount of charging and discharging of the battery 440 to an appropriate level by sensing the voltage, current, temperature, etc. of the battery, and balancing the cells of the battery 440. and determine the remaining capacity of the battery 440. In addition, the BMS 430 protects the battery 440 through an emergency operation when danger is detected.

The battery 440 may function as an energy storage for storing energy by charging power supplied through a power grid and as an energy source for supplying previously stored energy to a power load or power grid through discharging. According to some embodiments, the battery 440 may be a secondary battery capable of charging and discharging, and may be made of lithium ion and sodium sulfate as main materials.

4 is a flowchart illustrating a method for sharing a reduced power rate using an ESS device according to some embodiments of the present invention, and FIG. 5 is a diagram illustrating service contract information between a service provider and a user.

Referring to FIG. 4 , a method for sharing reduced power rates using an ESS device according to some embodiments of the present invention uses an ESS device 400 owned by a service provider and installed in a user's home, etc. It can be shared between the service provider and the user by reflecting it in the next month's billing rate for the service.

In step S1000, the server 100 may receive service contract information (CONTRACT_SERVICE) from the provider terminal 200. As shown exemplarily in FIG. 5 , the service contract information (CONTRACT_SERVICE) may include service information and ESS information. The service information may include contract information on basic services that are the basis of contracts, such as Internet service, card service, and product supply service. For example, service charge information such as total service charge and monthly charge, and service contract information such as contract period and contract interest may be included. The ESS information may include contract information on sharing of reduced electricity rates using the ESS device 400 provided in combination with the basic service. For example, ESS installation information, which is information such as an installation location where the ESS device 400 is installed, a sharing rate for a fee saved by using the ESS device 400, a refund method of refund amount, a method for determining refund amount, etc. Information such as reduction cost sharing information may be included.

Service contract information (CONTRACT_SERVICE) is information entered into by a contract between a service provider and a user, and the server 100 stores information on a contract to be concluded, and then, based on the stored service contract information (CONTRACT_SERVICE), the supplier and It can govern the contents of contracts between users.

In step S2000, the server 100 may receive monthly power usage data DT_MPC from the user terminal 300. The monthly power consumption data DT_MPC may be data measured from the ESS device 400 installed in a place determined according to the service contract information CONTRACT_SERVICE.

In step S3000, the server 100 may calculate a first rate and a second rate based on the monthly power usage data DT_MPC. Here, the first rate is a rate based on a progressive rate plan for monthly power consumption included in the monthly power consumption data DT_MPC, and the second rate is a rate based on a time-based rate plan for the monthly power use. That is, the server 100 may calculate two charges for the same monthly power usage.

In step S4000, the server 100 may transmit a remittance request (REQ_Remittance(BILL1)) for the first fee to the user terminal 300. The remittance request for the first charge (REQ_Remittance(BILL1)) may include information requesting remittance of the first charge from the service provider. That is, the user may request the user terminal 300 to remit a charge according to a progressive rate plan for monthly power use to the service provider.

In step S5000, the server 100 may transmit a payment request (REQ_Payment(BILL2)) for the second fee to the provider terminal 200. The payment request for the second fee (REQ_Payment(BILL2)) may be information requesting payment of the fee (second fee) according to the user's time-based rate plan. The user's space where the ESS device 400 is installed has a time-based rate system applied, and the server 100 transfers the second rate to the user's electricity usage to which the time-based rate system is applied. may be requested to pay the company).

In step S6000, the server 100 may determine the user refund amount for the fee saved by using the ESS device 400 and the time-based rate plan. That is, the difference between the first and second rates may be determined as the reduced rate, and an amount to be refunded to the user may be determined among the reduced rates. The refund amount may be determined according to ESS information among service contract information (CONTRACT_SERVICE). Examples of determining the refund amount will be described later with reference to FIGS. 6 to 9 and the like.

In step S7000, the server 100 may determine the next month's charge to be transmitted to the user terminal 300 by reflecting the determined refund amount. The billing fee for the following month may be determined as an amount obtained by subtracting the refund amount from the monthly service fee. For example, if the monthly service charge is a fixed amount, an amount obtained by subtracting the determined refund amount from the fixed charge may be determined as the charge for the next month, and then the determined charge may be charged to the user terminal 300 . As another example, if the monthly service charge is an amount that is variably set according to usage, the service charge may be calculated according to the amount used in the month, and an amount obtained by subtracting the refund amount from the calculated service charge may be determined as the next month's charge.

According to some embodiments, the refund amount may be provided to the user in the form of points. That is, the amount obtained by subtracting the refund amount from the service usage fee may be determined as the billing fee for the next month and billed to the user, or the service usage fee may be charged, but the points corresponding to the determined refund amount may be determined and the user terminal together with the next month billing fee (service usage fee) It may be provided to the user through 300.

According to some embodiments of the present invention, by installing the ESS device 400 in the user's space owned by the service provider, the user can receive the benefit of reducing electricity rates through the ESS and the time-based rate system without burdening the cost of building the ESS. can In addition, by combining a basic service that charges a user monthly with a service using an ESS device, it is possible to reduce the monthly charge for the basic service.

According to some embodiments, the server 100 may determine state information of the ESS device 400 and determine whether to maintain/repair the ESS device based on the determination. For example, by determining at least one state information of the operating period, accumulated charge/discharge amount, and charge/discharge efficiency of the ESS device 400, and comparing each state information with a predefined standard, the ESS device 400 ) can be repaired or replaced. That is, according to an embodiment of the present invention, the ESS device 400 is owned by the service provider, and the provider determines the state of the ESS device 400 installed in each home through the provider terminal 200 and performs maintenance and repair. , From the user's point of view, the burden of cost and device status identification is reduced, and from the supplier's point of view, flexibility in maintenance/repair is increased.

According to some embodiments, a user can participate in a DR (Demand Response) system to participate in a demand resource trading market, and reduce power rates by applying the present invention. For example, when a DR participation request is triggered when power demand is high, power charged in the battery 440 of the ESS device 400 is supplied to the power company, and a corresponding cost is compensated for the compensated amount It is possible to reduce electricity bills by determining the refund amount calculated at a predefined rate and reflecting the determined refund amount to the next month's billing rate for the basic service.

According to some embodiments, electricity charged by using the ESS device 400 can be sold (supplied) to a power exchange and the like, and electricity rates can be reduced by applying the present invention to the sale price. For example, by charging the ESS device 400 installed in each home with electricity in the light load section, supplying it to the power exchange to compensate for the supply cost, generating revenue, and applying a predefined ratio to the revenue Electricity charges can be reduced by determining the refund amount and reflecting the determined refund amount on the next month's billing rate for the basic service.

6 is a flowchart for explaining an embodiment of determining a refund amount based on a reduced fee by an ESS device.

Referring to FIG. 6 , in the method of sharing a reduced fee according to some embodiments of the present invention, a different sharing rate applied to the refund amount may be applied according to the reduced fee. As shown, the server 100 compares the reduced fee with the first criterion (step S6110), and when the reduced fee is greater than or equal to the first criterion, determines the refund amount based on the first share ratio (step S6120). , When the reduced fare is less than the first criterion, the refund amount may be determined based on the second sharing ratio (step S6130). For example, the first and second sharing ratios may be applied as shown in Table 1 below.

division 1st Share Ratio (%) Second Share Ratio (%) service provider 50 30 user 50 70

That is, when the reduced charge is equal to or greater than the first criterion, the service provider and the user share the reduced charge at a ratio of 5:5, and the refund amount may be determined based on this. When the reduced fee is less than the first criterion, the service provider and the user share the reduced fee at a ratio of 3:7, and the refund amount may be determined based on this.

According to some embodiments, when the reduction fee is greater than or equal to the first criterion, the second sharing ratio is applied to the sharing rate of the reduced fee up to the first criterion, and the first sharing ratio is applied to the sharing ratio of the remaining amount to determine the refund amount. can

7 is a flowchart illustrating an embodiment of determining a refund amount based on a ratio of a monthly billing fee to a reduced fee.

Referring to FIG. 7 , in the method for sharing a reduced fee according to some embodiments of the present invention, a different sharing ratio applied to a refund amount may be applied according to a ratio of a monthly billed fee to a reduced fee. In this case, the monthly billing fee may mean a basic service usage fee. As shown, the server 100 compares the ratio of the monthly billing fee to the reduced fee with the second criterion (step S6210), and if the second criterion is greater than or equal to the second criterion, the server 100 determines the refund amount based on the third sharing ratio (step S6220). ), if it is less than the second criterion, the refund amount may be determined based on the fourth share ratio (step S6230).

That is, the ratio of the reduction fee to the monthly billing fee of the basic service (Internet usage fee, card fee, product installment fee, etc.) is compared with a predefined second criterion, and based on the comparison result, a different sharing ratio may be applied. .

According to some embodiments, when the ratio is equal to or greater than the second criterion, a fourth sharing ratio is applied to the sharing ratio for the savings rate up to the second criterion, and a third sharing ratio is applied to the sharing ratio for the remaining savings charges. The refund amount can be determined.

8 is a flowchart illustrating an embodiment of determining a refund amount based on a charge-to-discharge efficiency of an ESS device.

Referring to FIG. 8 , in the method of sharing savings rates according to some embodiments of the present invention, a different sharing ratio applied to refund amount may be applied according to the charging/discharging efficiency of the ESS device 400 . As shown, the server 100 compares the charge-to-discharge efficiency of the ESS device with the third criterion (step S6310), and if it is equal to or greater than the third criterion, determines the refund amount based on the fifth share ratio (step S6320) , If it is less than the third criterion, the refund amount may be determined based on the sixth sharing ratio (step S6330). In this case, the fifth and sixth sharing rates may be different from each other. That is, a different sharing ratio may be applied based on the charge/discharge efficiency of the ESS device 400 installed in the contracted space of the user.

9 is a flow chart illustrating an embodiment of determining a refund amount based on whether a product balance payment period has elapsed.

Referring to FIG. 9 , the server 100 may differently apply a sharing ratio for determining a refund amount according to whether or not the balance payment period according to the service contract has elapsed. If the service contract between the service provider and the user is a contract for the sale of products such as home appliances, a contract can be concluded in which only a part of the contract amount is paid in advance as pre-paid money, and the remaining amount excluding the pre-paid money is paid in installments over a fixed period, In this case, the present invention can be applied to the balance payment service.

According to some embodiments, the service contract information (CONTRACT_SERVICE) between the service provider and the user may include information on products purchased by the user, information on prepaid payments, information on balances, and information on payment periods of balances, etc. The server 100 may reflect the refund amount using the ESS device 400 to determine the next month's charge for the remaining balance.

In this case, step S6000 of FIG. 4 may include steps S6410, S6420, and S6430 of FIG. 9 . In step S6410, the server 100 may determine whether the current balance payment period has elapsed. If the balance payment period has elapsed (step S6420), the refund amount is determined based on the 7th sharing ratio, and if the balance is within the payment period (step S6430), the refund amount can be determined based on the 8th sharing ratio.

According to some embodiments, when the balance is within the payment period, the server 100 may deduct the refund amount calculated based on the eighth sharing ratio from the billing rate for the next month of the balance and charge the user terminal 300 . According to some embodiments, when the balance payment period has elapsed, the server 100 may provide the user with a refund amount calculated based on the seventh share ratio. In this case, the billing rate for the next month in step S7000 of FIG. 4 may be applied as details of refund amount provided to the user terminal.

10 is a diagram for explaining an embodiment in which an ESS device installed in a plurality of places and a plurality of user terminals communicating with each ESS device are applied.

Referring to FIG. 10 , a system 11 according to some embodiments of the present invention may include a plurality of user terminals 300 respectively connected to ESS devices 400 installed in a plurality of homes, and a server 100 ) may apply the reduced cost sharing method according to the present invention based on the contents of the contract between each user terminal 300 and the provider terminal 200.

11 is a diagram for explaining an embodiment in which an ESS device installed in a plurality of places and a user terminal communicating with the plurality of ESS devices are applied, and FIG. 12 is a flowchart for explaining refund amount determination in the embodiment of FIG. 11 am.

Referring to FIG. 11 , a system 12 according to some embodiments of the present invention may include a user terminal 301 connected to a plurality of ESS devices 401_1 to 401_N. For example, the ESS devices 401_1 to 401_N may be ESSs installed in each house included in the apartment house, and the user terminal 301 may be a terminal controlled by a management office of the apartment house. In addition, each of the plurality of ESS devices 401_1 to 401_N installed in each home may include a terminal communicating with the user terminal 301 . As another example, a plurality of terminals (not shown) electrically connected to the plurality of ESS devices 401_1 to 401_N and communicating with the user terminal 301 may be further included. In this case, the service contract may be a contract concluded between the service provider and the management office of the common house.

According to some embodiments, the user terminal 301 charges each of the first rates to which the progressive rate system is applied to each of the ESS devices 401_1 to 401_N (or terminals respectively connected to the ESS devices), and each home The user terminal 301 may pay the second rate according to the time-by-time rate plan.

According to some embodiments, the refund amount to be refunded to each household may be calculated based on the reduction fee and the management fee by the user terminal 301 . The server 100 calculates the difference between the savings fee for each household and the predefined management fee by the ESS devices 401_1 to 401_N (step S6510), and determines the refund amount based on the difference and service contract information. (Step S6520).

Then, the user terminal 301 pays the refund amount to the supplier terminal 200, and the supplier terminal 200 allocates the refund amount to each household where the ESS devices 401_1 to 401_N are installed, and reflects the allocated refund amount. You can determine how much the next month's bill will be billed to each household.

Various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, like reference numbers may be used for like or related elements. The singular form of a noun corresponding to an item may include one item or a plurality of items, unless the relevant context clearly dictates otherwise. In this document, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C" and "A, Each of the phrases such as "at least one of B or C" may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as "first" and "second" may simply be used to distinguish a corresponding component from other corresponding components, and do not limit the corresponding components in other respects (eg, importance or order).

The term "module" used in this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of this document may be implemented as software including one or more instructions stored in a storage medium readable by a machine (eg, the server 100). For example, the processor 120 of the device (eg, the server 100) may call at least one command among one or more commands stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' only means that the storage medium is a tangible device and does not contain a signal (e.g. electromagnetic wave), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.

According to one embodiment, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. A computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store or between two user devices (eg smartphones). It can be distributed (e.g., downloaded or uploaded) directly or online. In the case of online distribution, at least part of the computer program product may be temporarily stored or temporarily created in a device-readable storage medium such as a manufacturer's server, an application store server, or a relay server's memory.

According to various embodiments, each component (eg, module or program) of the components described above may include a singular object or a plurality of entities. According to various embodiments, one or more components or operations among the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. . According to various embodiments, operations performed by modules, programs, or other components are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations are executed in a different order, omitted, or , or one or more other operations may be added.

10: system 100: server
110: communication unit 120: processor
130: RAM 140: memory
200: provider terminal 300: user terminal
400: ESS device 410: EMS
420: PCS 430: BMS
440: battery

Claims (9)

A method for sharing electricity rates saved by using an ESS (Energy Storage System) device, the method being performed by a server,
As service contract information between a service provider and a user, service contract information including a monthly billing fee for the service provided to the user by the service provider and a sharing rate of electricity fee saved by using the ESS device is provided to the provider terminal receiving from;
Receiving monthly power consumption data of the contracted space from a user terminal electrically connected to the ESS device installed in the contracted space according to the service contract;
calculating a first rate based on a progressive rate plan and a second rate based on a time-based rate based on the monthly electricity usage data;
determining a refund amount among the reduced rates, which are the difference between the first and second rates, based on the service contract information; and
Including the step of determining the billing fee for the next month by reflecting the determined refund amount;
In the step of determining the refund amount,
The service contract information includes information on the sharing ratio, which is set differently depending on whether the ratio of the reduced electricity price to the monthly billing rate is equal to or greater than a second standard,
The server determines the refund amount based on a comparison result of the ratio of the reduced electricity rate to the monthly billing rate and the second criterion,
Determining a refund amount based on a third sharing rate when the ratio of the reduced electricity rate to the monthly billing rate is greater than or equal to the second criterion, and determining a refund amount based on a fourth sharing rate when it is less than the second criterion characterized,
The server determines state information of at least one of the operation time of the ESS device, the accumulated charge/discharge amount, and the charge/discharge efficiency, and compares each state information with a predefined standard to maintain the ESS device, Characterized in that determining whether to pay, the method. The method of claim 1,
Transmitting a remittance request to the service provider for the first charge to the user terminal; and
Further comprising transmitting a payment request for the second charge to the provider terminal. The method of claim 1,
The service contract information includes information on the sharing ratio, which is set differently depending on whether the reduced electricity price is equal to or greater than a first standard,
The method of claim 1 , wherein the server determines the refund amount based on a comparison result between the reduced power rate and the first criterion. delete The method of claim 1,
The service contract information includes information on the sharing ratio, which is set differently depending on whether the charge-to-discharge efficiency of the ESS device is equal to or greater than a third criterion,
Wherein the server determines the refund amount based on a comparison result of the charge-to-discharge efficiency of the ESS device and the third criterion. The method of claim 1,
The step of determining the billing rate for the next month includes determining points corresponding to the determined refund amount,
The server provides the determined points to the user terminal together with the next month's billing rate. The method of claim 1,
The service contract information further includes product information to be purchased by the user, pre-payment information, balance information, and information on a payment period of the balance,
The method of claim 1 , wherein the determining of the billing rate for the next month includes determining a billing rate for the next month for the remaining balance by reflecting the refund amount. The method of claim 7,
The service contract information includes information on the sharing ratio, which is set differently depending on whether the balance payment period has elapsed,
Wherein the server determines the refund amount based on whether the payment period of the balance has elapsed. The method of claim 1,
The user terminal includes a plurality of terminals electrically connected to ESS devices installed in each of a plurality of households,
charging, by a manager terminal electrically connected to each of the terminals, a first rate for each of the plurality of households to each of the terminals; and
Further comprising the step of paying a second fee for each of the plurality of households in the manager terminal;
The step of determining the refund amount is,
calculating a difference between the savings rate and a predefined management fee; and
And determining the refund amount based on the difference between the reduction fee and the management fee and the service contract information.

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