KR20170002311A - Energy management scheduling system and method for energy storage system - Google Patents

Abstract

The present invention relates to energy management scheduling system and method for an energy storage system. The present invention can more efficiently manage an energy resource by including a wired and wireless communication interface which interconnects devices constituting the energy management system or external devices to transmit information to each other, and an energy storage system (ESS) charging and discharging control scheduling module which performs scheduling for setting an energy charging and discharging control mode of the ESS through combined application of system scheduling based on power fluctuation plan and user scheduling reflecting the input of a user.

Description

[0001] ENERGY MANAGEMENT SCHEDULING SYSTEM AND METHOD FOR ENERGY STORAGE SYSTEM [0002]

The present invention relates to an energy management scheduling system and method, and more particularly, to an energy management scheduling system and method for controlling energy charging and discharging of an energy storage device.

Recent years have suffered extreme power shortages due to energy policy failures, increased system cooling and air conditioning, problems with power trading systems, overloading of power generation facilities, and especially power usage at peak hours. In order to overcome this phenomenon, the Energy Storage System (ESS), which stores surplus power among the generated energy separately and transmits it when power is insufficient, has become a hot topic of interest in related fields.

However, since the existing ESS operates the schedule management of the energy charge / discharge control simply by setting the default value at the time of shipment of the product or the charge / discharge control that the user arbitrarily sets by the time zone, it is inefficient to perform energy management Is performed.

Korean Patent Laid-Open Publication No. 10-2015-0060395 (2015.06.03) Korean Patent Laid-Open Publication No. 10-2013-0078354 (July 10, 2013)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide an apparatus and method for scheduling a home network system by mixing internal system scheduling based on a power- And to provide an energy management scheduling system and method for an energy storage device capable of more efficient energy resource management.

According to an aspect of the present invention, there is provided an energy management scheduling system for an energy storage system, the system comprising: a wired / wireless communication interface for interconnecting devices or external devices constituting an energy management system, An ESS charge / discharge control scheduling module for performing scheduling for setting an energy charge / discharge control mode of an energy storage system (ESS) using a system scheduling based on a power fluctuation plan and a user scheduling reflecting user input, .

Meanwhile, the energy management scheduling method for an energy storage device of the present invention is a method for an energy management system to schedule a charge / discharge control mode of an energy storage system (ESS), wherein a variable charge is higher than a predetermined threshold value Determining a system schedule as a charge mode and determining the system schedule as a discharge mode when the variable charge is higher than a predetermined threshold; determining a user schedule according to a user input inputted from an external user device; The system scheduler compares the system schedule and the user schedule to determine whether the system schedule and the user schedule are the same, and if the system schedule and the user schedule are identical, the system schedule and the user schedule determined in the same case are scheduled in the charge / discharge control mode of the ESS, Mode. ≪ / RTI >

As described above, the energy management scheduling system and method for an energy storage device according to the present invention can be implemented in a more efficient manner by using inner system scheduling based on a power fluctuation plan and outer user scheduling reflecting a power consumption amount or a life pattern of a user Energy resource management is possible.

FIG. 1 is an overall configuration diagram illustrating an energy storage system grid connection environment based on a home energy management system to which the energy management scheduling system of the present invention is applied.
FIG. 2 is a block diagram schematically showing the overall configuration of an energy management scheduling system according to the present invention, which is applied to an energy storage system grid environment based on a home energy management system as shown in FIG.
FIG. 3 is a detailed block diagram of a circular graph showing the energy charge-discharge scheduling of the ESS by dividing 24 hours a day by time.
4 is a detailed configuration diagram of a system scheduling graph for charge / discharge control of an ESS according to an embodiment of the present invention.
5 is a detailed configuration diagram of a user scheduling graph for charge / discharge control of an ESS according to an embodiment of the present invention.
FIG. 6 is a flowchart schematically illustrating an energy management scheduling method according to an embodiment of the present invention, which is applied to an energy storage system grid environment based on a home energy management system as shown in FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The energy management scheduling system for an energy storage device according to the present invention may be implemented as an Energy Storage System (ESS) in a home energy management system (HEMS) equipped with software related to the energy management scheduling method of the present invention. Energy Management System) connected to a wired or wireless communication network to perform energy charging and discharging based on a value scheduled according to the method, and distributes the charged electric power supplied from the power plant to the load of the household appliance through the distribution board from the EMS A system based environment is proposed as a preferred embodiment.

FIG. 1 is an overall configuration diagram illustrating an energy storage system grid connection environment based on a home energy management system to which the energy management scheduling system of the present invention is applied.

Referring to FIG. 1, the HEMS-based ESS grid connection environment to which the energy management scheduling system of the present invention is applied includes a grid power source 10, a bidirectional converter 21 capable of charging and discharging the battery, A power conversion system (PCS) for controlling an output including a bi-directional inverter 22 capable of charging system power to a battery, a battery 23 for collecting electricity, a battery management for efficiently managing the battery, An EMS 20 including a battery management system (BMS) 24 and a controller 25 for performing data communication and battery charge / discharge control, a grid power distribution board 30 connected to an inverter output, 40), and a HEMS 50 for measuring and charging the battery charge / discharge power and for controlling the ESS according to the state, as a HEMS 50 equipped with software relating to the energy management scheduling method of the present invention .

The BMS 24 first transmits information on the charging rate and the temperature of the battery 23 to the ESS control unit 25 and the communication interface module connected to the ESS control unit 25 transmits the HEMS Discharging power of the ESS battery 23 by receiving the battery charging and discharging reference value to be performed by the ESS 20 from the HEMS 50. [

In the case of the existing ESS, only the charge / discharge control according to the preset time can be performed in one way using the setting function of the PCS without the HEMS. However, the present invention adopts the software related to the energy management scheduling method of the present invention A separate HEMS can be configured to change the ESS charge / discharge control setting of various scenarios.

Hereinafter, an energy management scheduling system for an energy storage device of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram schematically showing the overall configuration of an energy management scheduling system according to the present invention, which is applied to an energy storage system grid environment based on a home energy management system as shown in FIG.

As shown in FIG. 2, the energy management scheduling system according to the present invention includes a wired / wireless communication interface 100 for interconnecting devices or external devices constituting the present invention so that information can be transmitted to each other, Module 210 and a user scheduling module 220. The energy charging / discharging control mode of the ESS is set by using internal system scheduling based on the power fluctuation charge and external user scheduling reflecting the power consumption amount or life pattern of the user Discharge control scheduling module 200 for performing scheduling for the ESS charge / discharge control scheduling module 200 and a database for storing data received via the wire / wireless communication interface 110 and ESS charge / discharge control data scheduled by the ESS charge / discharge control scheduling module 200 (300).

First, the wired / wireless communication interface 110 of the present invention receives software related information from the KEPCO and accesses the energy management scheduling system of the present invention through a wire / wireless communication network to monitor and control the energy management schedule And receives the user input from one or more external user devices installed therein and transmits the ESS charge / discharge control data scheduled by the ESS charge / discharge control scheduling module 200 to the control unit 25 of the external ESS 20 do.

Next, the ESS charge / discharge control scheduling module 200 reflects a user's power consumption or lifestyle through the internal system scheduling and user scheduling module 220 determined based on the power fluctuation plan by the system scheduling module 210 And the scheduling for setting the energy charge / discharge control mode of the ESS is performed using the outer user scheduling.

FIG. 3 is a detailed block diagram of a circular graph showing the energy charge-discharge scheduling of the ESS by dividing 24 hours a day by time. 3, the ESS charge / discharge control scheduling module 200 according to the preferred embodiment of the present invention includes an inner loop to be composed of a system schedule and a 24-bit outer loop structure Based on the time circular graph, the energy charging / discharging mode of the ESS can be changed by the system scheduling module 210 and the user scheduling module 220, which will be described in more detail below, using the respective scheduled system schedules and user schedules, Can be set. In this case, the modes to be set for energy management scheduling of the ESS are classified into a standby mode in which charging and discharging are not performed, a charging mode in which energy is charged in the ESS, and a discharging mode in which energy discharge is performed in the ESS. It may be a standby mode in which discharge is not performed.

Referring now to FIG. 4 and FIG. 5, the system scheduling module 210 and the user scheduling module 220 will be described in detail. First, the system scheduling module 210 generates a system schedule . The system scheduling module 210 according to an embodiment of the present invention divides an electric charge into light load, intermediate load, and maximum load according to a seasonal time slot, and calculates a system schedule based on a preset value such as a TOU Based on the electricity tariff contract system received from the electric power company such as KEPCO via the wired / wireless communication interface module 100, the system schedule is set to the charging mode at the dawn time when the electricity rate is lower than the predetermined threshold value , The system schedule is set to the discharge mode in the afternoon time period when the electricity rate is higher than the predetermined threshold value. 4 is a detailed configuration diagram of a system scheduling graph for charge / discharge control of an ESS according to an embodiment of the present invention. Referring to FIG. 4, a system schedule is set to a charge mode in a period from 5:00 to 9:00 , It can be confirmed that the discharge mode is set in the period from 14:00 to 18:00.

In this way, the system scheduling module 210 schedules based on the variable-rate-based payment system, so that the ESS performs the charging operation in the early morning hours and the discharging operation in the expensive afternoon hours, . ≪ / RTI >

Next, the user scheduling module 220 further determines a user schedule that can reflect a user's power usage or life pattern. The user scheduling module 220 of the present invention may be connected to one or more external user equipments 60 with software that can monitor and control an energy management schedule by accessing the energy management scheduling system of the present invention through a wired / , See FIG. 1), and may determine a user schedule according to any input user input. FIG. 5 is a detailed block diagram of a user scheduling graph for charge / discharge control of an ESS according to an embodiment of the present invention. Referring to FIG. 5, a user schedule is set to a charging mode in a period from 2:00 to 5:00, It can be confirmed that the discharge mode has been set to the discharge mode at the time of the discharge of the discharge lamp.

In this manner, the user scheduling module 220 can arbitrarily set a user schedule through one or more external user devices, thereby determining a user schedule by reflecting the power usage or life pattern thereof.

Referring again to FIG. 2, the ESS charge / discharge control scheduling module 200 includes an internal system scheduling and user scheduling module 200, which is determined based on the power fluctuation plan by the system scheduling module 210, The scheduling for setting the energy charge / discharge control mode of the ESS is performed by using the outer user scheduling reflecting the power consumption amount or the life pattern of the user through the scheduling unit 220, except that the inner system scheduling and the outer user scheduling are performed at the same time When another operation is set (for example, 8 to 9 hours, see FIG. 5), the user schedule is determined as the ESS charge / discharge control mode. That is, user scheduling has higher priority than system scheduling.

In this way, the ESS charge / discharge control scheduling module 200 of the present invention performs basic charge / discharge control mode setting through the system scheduling module 210 as shown in the inner system scheduling graph, and at the same time, the user scheduling module 220 to enable expansion of additional charge / discharge control mode settings. Therefore, it is possible to more efficiently manage the energy by using the inner system scheduling based on the electricity bill and the outer user scheduling reflecting the fluctuation of the power consumption of the user or the life pattern. That is, according to the present invention, it is possible to improve the disadvantages of the existing ESS, which can not optimize the energy management, by only performing the system scheduling ignoring the power consumption pattern of the user, to perform the basic system scheduling based on the electricity plan, Optimization of energy management is possible by adding user scheduling that reflects consumption patterns.

Finally, the database 300 is connected to the energy management scheduling system of the present invention through the wired / wireless communication network, information on the electricity tariff received from the KEPCO via the wired / wireless communication interface 110, and monitors and controls the energy management schedule User input from one or more external user equipments equipped with software capable of storing the ESS charge / discharge control data, and weather information from the weather station, and stores the ESS charge / discharge control data scheduled by the ESS charge / discharge control scheduling module 200.

Hereinafter, the energy management scheduling method for the energy storage apparatus of the present invention using the system configured as described above will be described. The description overlapping with the energy management scheduling system described above is simplified or omitted.

FIG. 6 is a flowchart schematically illustrating an energy management scheduling method according to an embodiment of the present invention, which is applied to an energy storage system grid environment based on a home energy management system as shown in FIG.

Referring to FIG. 6, the system scheduling module 210 determines a system schedule in a charging mode at a time when the electricity rate is lower than a predetermined threshold value, based on a predetermined value such as a charge per rate, The system schedule is determined to be the discharge mode at a time zone higher than the predetermined threshold value (step S610). One or more external user equipments (60, < RTI ID = 0.0 >) < / RTI > with software that can then be connected to the energy management scheduling system of the present invention via a wired or wireless communication network to monitor and control energy management schedules, 1), and determines a user schedule according to the inputted arbitrary user input (step S620). In step S630, the ESS charge / discharge control scheduling module 200 compares the system schedule determined in step S610 and the user schedule determined in step S620 to determine whether the system schedule determined in step S610 is identical to the system schedule determined in step S610 and step S620, And the user schedule in the ESS charge / discharge control mode (step S632). If not, the user schedule determined in step S620 is scheduled in the final ESS charge / discharge control mode (step S634).

 While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, but various changes and modifications may be made without departing from the scope of the present invention.

100: Communication interface module
200: ESS charge / discharge control scheduling module
210: a system scheduling module
220: User scheduling module
300: Database

Claims (10)

A wired / wireless communication interface that interconnects devices or external devices constituting the energy management system so that information can be transmitted to each other; and
An ESS charge / discharge control scheduling module for performing scheduling for setting an energy charge / discharge control mode of an energy storage system (ESS) using a system scheduling based on a power fluctuation plan and a user scheduling reflecting user input, And an energy management scheduling system. The method according to claim 1,
Wherein the system scheduling determines the system schedule as a charge mode if the variable rate is lower than a predetermined threshold and determines the system schedule as a discharge mode if the variable rate is higher than a predetermined threshold, system. The method according to claim 1 or 2,
Wherein the ESS charge / discharge control scheduling module schedules the system schedule and the user schedule determined in the same case in the ESS charge / discharge control mode if the system schedule and the user schedule are the same for each time slot, and if not, And scheduling the schedule in the ESS charge / discharge control mode. 4. The method according to any one of claims 1 to 3,
Energy management scheduling system applied to ESS of Home Energy Management System (HEMS). The method of claim 4,
Wherein the ESS is connected to the HEMS via a wired or wireless communication network to perform energy charging and discharging based on the charge / discharge control mode of the ESS scheduled by the ESS charge / discharge control scheduling module. The method of claim 5,
And distributes the electric power charged by the ESS to the household appliance load through the distribution board. CLAIMS What is claimed is: 1. A method for scheduling a charge / discharge control mode of an energy storage system (ESS)
Determining a system schedule as a charge mode when the variable rate is higher than a predetermined threshold value and determining the system schedule as a discharge mode when the variable rate is higher than a predetermined threshold value;
Determining a user schedule according to a user input inputted from an external user device, and
The system schedule and the user schedule determined to be the same are scheduled in the charge / discharge control mode of the ESS, if the system schedule and the user schedule are the same for each time slot, and if the system schedule and the user schedule are not identical, And scheduling in a discharge control mode. The method of claim 7,
Wherein the energy management scheduling method is applied to an ESS based on a home energy management system (HEMS) equipped with software related to the energy management scheduling method. The method of claim 8,
Wherein the ESS performs energy charging / discharging based on a charge / discharge control mode of the ESS connected to the HEMS through a wired or wireless communication network. The method of claim 9,
And distributes the electric power charged by the ESS to a load of the household appliance through a distribution board.

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