Power pattern generation method and device

Abstract

A power pattern generation method for an energy storage system according to an embodiment disclosed in the present specification may include a step of generating a charge / discharge pattern of an energy storage system (ESS) based on a normal distribution in consideration of a maximum C-rate (Max C-rate) and a time required for a unit charge / discharge operation (Time Step), a step of classifying the charge / discharge pattern into a charge pattern and a discharge pattern, a step of extracting a power value from the charge pattern or the discharge pattern based on an arbitrary first value for generating a virtual charge / discharge pattern of the energy storage system (ESS), and a step of generating a power pattern based on the power value.

Description

[Technical Field]

[0001] The present invention claims the benefit of priority based on Korean Patent Application No. 10-2021-0150947, filed on November 4, 2021, and all contents disclosed in the documents of this Korean patent application are incorporated herein by reference.

[0002] SUMMARY OF THE INVENTION The embodiments disclosed herein relate to a power pattern generation method and apparatus. [Background technology]

[0003] Renewable energy refers to energy that uses renewable fuels, including sunlight, water, precipitation, and biological organisms, rather than fossil fuels such as coal, oil, nuclear power, and natural gas. Types of renewable energy include solar energy, bioenergy, wind power, hydropower, and hydrogen energy.

[0004] An energy storage system (ESS) is a system that combines a renewable energy power generation system, such as solar power, with a power storage system. It stores surplus power from renewable energy or a power grid in a battery that can be charged and discharged, and supplies power to a load when needed. In general, an energy storage system combined with a renewable energy power generation system charges a battery with renewable energy or power from a grid, and supplies power to a load when needed from either the renewable energy, the grid, or the battery.

[0005] Generally, standard electricity in Korea is supplied as 60Hz AC. The energy storage system charges and / or discharges power to maintain the frequency of the power grid at 60Hz, which changes in real time. Summary of the Invention [Problem to be solved by the invention]

[0006] When designing an energy storage system, there is a problem in that the design is carried out without taking into consideration the power charging and discharging patterns of the energy storage system when calculating the lifespan, or the design is carried out assuming arbitrary power charging and discharging patterns.

[0007] When an energy storage system is designed without considering the power charging and discharging patterns of the energy storage system, it is difficult to calculate the temperature to be applied to the design. Also, when an energy storage system is designed by arbitrarily assuming the power charging and discharging patterns of the energy storage system, a pattern different from the pattern range required by the user may be used.

[0008] In order to more accurately estimate the lifespan of an energy storage system, it is necessary to generate power charging and discharging patterns in the range required by the user.

[0009] The matters described as prior art in the Background of the Invention and Problems to be Solved are intended only to enhance understanding of the present invention, and should not be understood as acknowledging that they constitute prior art already known to those having ordinary skill in the art. [Means for solving the problem]

[0010] A power pattern generation method for an energy storage system according to one embodiment disclosed in the present specification may include the steps of generating a charge / discharge pattern of an energy storage system (ESS) based on a normal distribution in consideration of a maximum C-rate (Max C-rate) and a time required for a unit charge / discharge operation (Time Step), classifying the charge / discharge pattern into a charge pattern and a discharge pattern, extracting a power value from the charge pattern or the discharge pattern based on an arbitrary first value for generating a virtual charge / discharge pattern of the energy storage system (ESS), and generating a power pattern based on the power value.

[0011] According to one embodiment, the power pattern generation method for the energy storage system may further include a step of adjusting a part of a charge value of the charge pattern or a discharge value of the discharge pattern within a range that satisfies an equivalent cycle of the energy storage system (ESS).

[0012] According to one embodiment, the power pattern generation method for the energy storage system may further include a step of calculating a charge / discharge amount based on the power value, and a step of generating remaining capacity (SoC, State of Charge) information based on the charge / discharge amount.

[0013] According to one embodiment, the method for generating a power pattern of the energy storage system further includes generating a first charging pattern and a second charging pattern based on the charging pattern, and generating a first discharging pattern and a second discharging pattern based on the discharging pattern, and the step of extracting a power value may extract a power value from any one of the first charging pattern, the second charging pattern, the first discharging pattern, and the second discharging pattern based on a first value and an arbitrary second value for generating a virtual charging / discharging pattern of the energy storage system (ESS).

[0014] According to one embodiment, the power pattern generation method for the energy storage system further includes generating a first set and a second set taking into account a ratio of positive numbers and negative numbers, and the second value can be selected from the first set or the second set.

[0015] According to one embodiment, the power pattern generating method for the energy storage system may further include, when the depth of discharge obtained from the remaining capacity information is equal to or greater than a reference value, repeatedly performing the steps of extracting a power value based on the second value, generating a power pattern based on the power value, calculating the charge / discharge amount based on the power value, and generating remaining capacity information based on the charge / discharge amount.

[0016] According to one embodiment, the power pattern generation method for the energy storage system may further include a step of adjusting a ratio of positive numbers and negative numbers included in the first set and the second set when the depth of discharge obtained from the remaining capacity information is equal to or greater than a reference value and the repeating step is performed more than a reference number of times.

[0017] A power pattern generation device for an energy storage system according to an embodiment disclosed in the present specification includes a memory for storing at least one instruction, a processor for executing the at least one instruction stored in the memory, and an output unit for outputting an execution result of the processor, wherein the processor may be configured to perform the following steps: generating an arbitrary normal distribution-based charge / discharge pattern in consideration of a maximum power (Max CP-rate) and a required time (Time Step) of a unit charge / discharge operation; classifying the charge / discharge pattern into a charge pattern and a discharge pattern; extracting a power value from the charge pattern or the discharge pattern based on an arbitrary first value for generating a virtual charge / discharge pattern of an energy storage system (ESS); and generating a power pattern based on the power value.

[0018] According to one embodiment, the processor of the power pattern generation device for an energy storage system may be configured to further perform a step of adjusting a part of a charge value of the charge pattern or a discharge value of the discharge pattern within a range that satisfies an equivalent cycle of the energy storage system (ESS).

[0019] According to one embodiment, the processor of the power pattern generation device for an energy storage system may be configured to further perform the steps of calculating a charge / discharge amount based on the power value, and generating remaining capacity (SoC; State of Charge) information based on the charge / discharge amount.

[0020] According to one embodiment, the processor of the power pattern generation device for an energy storage system is configured to further perform the steps of generating a first charging pattern and a second charging pattern based on the charging pattern and generating a first discharging pattern and a second discharging pattern based on the discharging pattern, and the step of the processor extracting the power value may extract a power value from any one of the first charging pattern, the second charging pattern, the first discharging pattern, and the second discharging pattern based on a first value and an arbitrary second value for generating a virtual charging / discharging pattern of the energy storage system (ESS).

[0021] According to one embodiment, the processor of the power pattern generation device for an energy storage system is configured to further perform the step of generating a first set and a second set taking into account a ratio of positive numbers and negative numbers, and the second value can be selected from the first set or the second set.

[0022] According to one embodiment, the processor of the power pattern generation device for an energy storage system may be configured to, when the depth of discharge obtained from the remaining capacity information is equal to or greater than a reference value, repeatedly perform the steps of extracting a power value based on the second value, generating a power pattern based on the power value, calculating the charge / discharge amount based on the power value, and generating remaining capacity information based on the charge / discharge amount.

[0023] According to one embodiment, the processor of the power pattern generation device for an energy storage system may be configured to adjust a ratio of positive numbers and negative numbers included in the first set and the second set when a depth of discharge obtained from the remaining capacity information is equal to or greater than a reference value and the repeating step is performed more than a reference number of times. [Effects of the Invention]

[0024] The power pattern generating method for an energy storage system according to the present disclosure can generate a power charging pattern and a power discharging pattern within a range required by a user.

[0025] Based on the power charging pattern and power discharging pattern generated by the power pattern generation method for an energy storage system according to the disclosure of this specification, the lifespan of the energy storage system can be calculated relatively accurately and the design can proceed. [Brief explanation of the drawings]

[0026] [Figure 1] 1 illustrates a power generation system, an energy storage system, a power pattern generator, and a user according to one embodiment disclosed herein. [Figure 2] 1 is a flowchart illustrating a power pattern generation method according to one embodiment disclosed herein. [Figure 3] 1 is a flowchart specifically illustrating a power pattern generation method according to an embodiment of the present invention. [Figure 4] 1 is a flowchart illustrating a power pattern generation method according to one embodiment disclosed herein. [Figure 5] 1 is a flowchart illustrating a power pattern generation method according to one embodiment disclosed herein.

[0027] In connection with the description of the drawings, the same or similar reference numbers may be used to refer to the same or similar components. DETAILED DESCRIPTION OF THE INVENTION

[0028] Various embodiments of the present invention will now be described with reference to the accompanying drawings, but it should be understood that this is not intended to limit the present invention to the particular embodiments, but rather to include various modifications, equivalents, and / or alternatives to the embodiments of the present invention.

[0029] The various embodiments and terms used in this specification are not intended to limit the technical features described herein to a specific embodiment, but should be understood to include various modifications, equivalents, or alternatives of the embodiment. In connection with the description of the drawings, like reference numerals may be used for like or related components. The singular form of a noun corresponding to an item may include one or more of the said item, unless the relevant context clearly dictates otherwise.

[0030] As used herein, each of the phrases such as "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 "at least one of A, B, or C" may include any one of the items listed with that phrase or all possible combinations thereof. Terms such as "first," "second," "primary," "second," "A," "B," "(a)," or "(b)" may be used merely to distinguish one element from another, and do not limit the element in other respects (e.g., importance or order) unless specifically stated to the contrary.

[0031] In this specification, when a (e.g., first) component is referred to as being "coupled," "coupled," or "connected" to another (e.g., second) component, with or without the terms "functionally" or "communicatively," or when a reference is made to "coupled" or "connected," it means that the component can be coupled to the other component directly (e.g., by wire), wirelessly, or through a third component.

[0032] According to one embodiment, a method according to various embodiments disclosed herein may be provided in a computer program product. The computer program product may be traded between a seller and a buyer as a commodity. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read-only memory (CD-ROM)) or may be distributed online (e.g., downloaded or uploaded) via an application store or directly between two user devices. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily generated on a machine-readable storage medium, such as the memory of a manufacturer's server, an application store server, or an intermediary server.

[0033] According to various embodiments, each of the components described above (e.g., modules or programs) may include one or more entities, and some of the entities may be located separately in other components. According to various embodiments, one or more of the components described above may be omitted, or one or more other components or operations may be added. Alternatively, or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In such cases, the integrated component may perform one or more functions of each of the multiple components in a manner that is the same as or similar to that performed by the corresponding component of the multiple components prior to the integration. According to various embodiments, operations performed by a module, program, or other component may be performed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be performed in a different order, omitted, or one or more other operations may be added.

[0034] FIG. 1 is a diagram illustrating a power generation system, an energy storage system, a power pattern generator, and a user according to one embodiment disclosed herein.

[0035] 1, a power generation system 10 can generate power. For example, the power generation system 10 can generate power based on renewable energy, but is not limited to this.

[0036] An energy storage system (ESS) 20 can operate in cooperation with the power generation system 10. According to an embodiment, the energy storage system 20 can discharge stored power when the power generation system 10 generates power below a certain standard. According to another embodiment, the energy storage system 20 can charge the power generated above a certain standard into the energy storage system 20 when the power generation system 10 generates power above a certain standard.

[0037] The power pattern generator 100 can generate a virtual power pattern of the energy storage system 20. The power pattern can be composed of a power charging pattern and a power discharging pattern. The power pattern generator 100 can generate a virtual power charging pattern and a power discharging pattern of the energy storage system 20 that are similar to the actual power charging pattern and the power discharging pattern of the energy storage system 20. The virtual power pattern generated by the power pattern generator 100 can be used to calculate the lifespan of the energy storage system 20.

[0038] The power pattern generation device 100 may include an input unit 110, a memory 120, a processor 130, and an output unit 140. A user 30 can input coefficient values ​​required for the power pattern generation device 100 to generate a power pattern to the input unit 110 of the power pattern generation device 100. According to an embodiment, the user 30 can input coefficient values ​​of the system energy (unit: Wh), maximum C-rate, equivalent cycle, required time for a unit charge / discharge operation (unit: s), reference value of depth of discharge (DOD; Depth of Discharge, unit: %), and / or reference iteration count of the energy storage system 20 to the input unit 110 of the power pattern generation device 100.

[0039] According to an embodiment, the coefficient value of System Energy may refer to the energy stored in the energy storage system 20 .

[0040] The coefficient value of Max C-rate may refer to the maximum power that can be charged or discharged in the energy storage system 20 .

[0041] The coefficient value of the equivalent cycle may refer to the ratio of system energy to the energy used by the energy storage system 20. For example, if the total energy used to have 100 Wh of energy in the energy storage system 20 is 150 Wh, the coefficient value of the equivalent cycle may be calculated as 1.5.

[0042] The coefficient value of the time step for a unit charge / discharge operation may refer to the time required for the energy storage system 20 to charge or discharge power once.

[0043] The depth of discharge (DOD) may refer to the depth of discharge of the energy storage system 20 required by the user 30 .

[0044] The coefficient value of the reference iteration count may mean the number of times the power pattern generating device 100 repeats the power pattern generating method under the same or similar conditions to generate a power pattern for the energy storage system 20 within the range of input received from the user 30.

[0045] The memory 120 may store coefficient values ​​input to the energy storage system 20. The memory 120 of the power pattern generator 100 may store at least one instruction for generating a virtual power charging pattern and a virtual power discharging pattern for the energy storage system 20.

[0046] The processor 130 can execute instructions stored in the memory 120 using coefficient values ​​stored in the memory 120. The processor 130 can refer to a dedicated processor (e.g., an embedded processor) for performing each operation step, or a general-purpose processor (e.g., a CPU or application processor) that can perform the operations by executing one or more software programs stored in a memory device.

[0047] The output unit 140 may output the virtual power charging pattern and power discharging pattern of the energy storage system 20 generated according to the embodiments of the present specification.

[0048] The specific operation of the power pattern generation device 100 will be described in more detail below with reference to FIGS.

[0049] FIG. 2 is a flowchart illustrating a power pattern generation method according to one embodiment disclosed herein.

[0050] Referring to FIG. 2, an operating method of the power pattern generation device according to an embodiment disclosed herein may include the steps of: generating a charge / discharge pattern of the energy storage system 20 based on a normal distribution in consideration of a maximum C-rate (Max C-rate) and a time step (Time Step) required for a unit charge / discharge operation (S100); classifying the charge / discharge pattern into a power charge pattern and a power discharge pattern (S110); extracting either a charge value or a discharge value as a power value (S120); and generating a power pattern based on the power value (S130).

[0051] Steps S100 to S130 will be specifically described below with reference to FIG.

[0052] In step S100, the processor 130 may generate a charge / discharge pattern for the energy storage system 20. According to an embodiment, the charge / discharge pattern for the energy storage system 20 may be composed of discrete values. The processor 130 may generate the charge / discharge pattern based on a normal distribution. According to an embodiment, the processor 130 may generate the charge / discharge pattern using a normal distribution random number generation function of a Python program. According to an embodiment, the processor 130 may generate the charge / discharge pattern based on a normal distribution having a mean of 0. The values ​​constituting the charge / discharge pattern (i.e., the values ​​on the y-axis on the normal distribution) may represent the amount of charging power or discharging power of the energy storage system 20, respectively. The processor 130 may multiply each value constituting the generated charge / discharge pattern by a coefficient value of a maximum C-rate input by the user 30. The number of discrete values ​​constituting the charge / discharge pattern may be equal to the number of times the energy storage system 20 charges and discharges power in a day. That is, the charge / discharge pattern of the energy storage system 20 may be composed of the same number of discrete values ​​as the calculation result values ​​of [Equation 1].

[0053]

number

[0054] In step S110, the processor 130 may classify the normal distribution-based charge / discharge pattern generated in step S100 into a power charge pattern and a power discharge pattern. The processor 130 may classify the normal distribution-based charge / discharge pattern into a power charge pattern and a power discharge pattern by bisecting the x-axis of the normal distribution. According to the embodiment disclosed herein, when the processor 130 generates charge / discharge patterns based on a normal distribution having a mean of 0, the processor 130 may classify the charge / discharge patterns located at x≧0 on the normal distribution as charge patterns, and may classify the charge / discharge patterns located at x<0 on the normal distribution as discharge patterns. The value classified as a charge pattern by the processor 130 may represent a power value charged to the energy storage system 20, and the value classified as a discharge pattern by the processor 130 may represent a power value discharged from the energy storage system 20. The processor 130 may convert the value classified as a discharge pattern into a negative number.

[0055] In step S120, the processor 130 may extract a power value for generating a virtual charge / discharge pattern of the energy storage system (ESS). The processor 130 may select and extract, as a power value, either a charge value of the charge pattern or a discharge value of the discharge pattern. The processor 130 may extract a power value based on an arbitrary first value for generating a virtual charge / discharge pattern. According to an embodiment, the processor 130 may generate an arbitrary number of sets G={1, 2} and select an arbitrary first value from the set G. In this case, if the first value is 1, the processor 130 may extract, as a power value, a charge value from the charge pattern, and if the first value is 2, the processor 130 may extract, as a power value, a discharge value from the discharge pattern.

[0056] In step S130, the processor 130 may generate a virtual power pattern of the energy storage system 20 based on the extracted power values. The processor 130 may repeat step S120 of extracting either a charge value or a discharge value as a power value, and sequentially arrange the power values ​​extracted in step S120. At this time, the sequentially arranged power values ​​may be a virtual power pattern of the energy storage system 20. Before repeating step S120 of extracting a power value, the processor 130 may delete a previously extracted power value from the charge pattern or the discharge pattern. By deleting a previously extracted power value from the charge pattern or the discharge pattern, the processor 130 may prevent a power value identical to a charge value already extracted from the charge pattern or a discharge value already extracted from the discharge pattern from being extracted.

[0057] The processor 130 may generate a virtual power pattern in which charging and discharging operations are performed alternately through steps S120 and S130. The virtual power pattern of the energy storage system 20 generated according to the embodiments disclosed herein may be output via the output unit 140.

[0058] FIG. 3 is a flowchart specifically illustrating a power pattern generation method according to one embodiment of the present invention.

[0059] Referring to FIG. 3, the method of operating the power pattern generation device according to an embodiment disclosed in the present specification includes the steps of: generating charge / discharge patterns of the energy storage system 20 based on a normal distribution in consideration of a maximum C-rate and a time step of a unit charge / discharge operation (S200); classifying the charge / discharge patterns into a power charging pattern and a power discharging pattern (S210); (S220) adjusting a part of the charge value of the charge pattern or the discharge value of the discharge pattern within a range satisfying the charge cycle; (S230) generating a first set and a second set based on the charge pattern and generating a first set and a second set based on the discharge pattern; (S240) generating a first set and a second set taking into consideration the ratio of positive numbers and negative numbers; (S250) extracting a power value from any one of the first charge pattern, the second charge pattern, the first discharge pattern, and the second discharge pattern; (S260) generating a power pattern based on the power value; (S270) calculating a charge / discharge amount based on the power value; and / or (S280) generating remaining capacity information based on the charge / discharge amount.

[0060] Steps S200 to S280 will be specifically described below with reference to FIGS.

[0061] Step S200 may be substantially the same as step S100 in FIG.

[0062] Step S210 may be substantially the same as step S110 in FIG.

[0063] In step S220, the processor 130 may adjust a portion of the charge value of the charge pattern and / or a portion of the discharge value of the discharge pattern. According to the embodiment, the processor 130 may perform an adjustment to reduce a portion of the charge value of the charge pattern and / or a portion of the discharge value of the discharge pattern. According to the present embodiment, the power pattern generation device 100 can prevent generation of a power pattern that excessively charges or discharges power by performing an adjustment to reduce a portion of the charge value and / or a portion of the discharge value in step S220.

[0064] The processor 130 may adjust a portion of the charge value of the charge pattern and / or a portion of the discharge value of the discharge pattern to a degree that satisfies the range of the equivalent cycle input from the user 30. The range of the equivalent cycle input from the user 30 may refer to a range in which the equivalent cycle of the charge and / or the equivalent cycle of the discharge exceeds the coefficient value of the equivalent cycle input from the user 30. The processor 130 may determine whether the equivalent cycle of the charge and / or the equivalent cycle of the discharge satisfies the range of the equivalent cycle input from the user 30. A method in which the processor 130 calculates the equivalent cycle of the charge and / or the equivalent cycle of the discharge according to the embodiments disclosed herein will be described in detail below.

[0065] The processor 130 may calculate the charge energy and / or the discharge energy. The processor 130 may convert a charge value included in the charge pattern into the charge energy, and may convert a discharge value included in the discharge pattern into the discharge energy. The processor 130 may refer to the following [Equation 2] to calculate the charge energy and / or the discharge energy.

[0066]

number

[0067] The processor 130 may calculate an equivalent charge cycle and / or an equivalent discharge cycle. The processor 130 may calculate an equivalent charge cycle based on charge energy and an equivalent discharge cycle based on discharge energy. The processor 130 may refer to the following [Equation 3] to calculate the equivalent charge cycle and / or the equivalent discharge cycle. According to an embodiment, the processor 130 may set the initial values ​​of the equivalent charge cycle and the equivalent discharge cycle to 0.

[0068]

number

[0069] In step S230, processor 130 may classify some of the charge values ​​included in the charge pattern into a first charge pattern and the remaining charge values ​​into a second charge pattern. In step S220, processor 130 may set the same criterion for classifying the charge patterns into the first charge pattern and the second charge pattern as the same criterion for classifying the discharge patterns into the first discharge pattern and the second discharge pattern. According to an embodiment, processor 130 may classify the charge values ​​into the first charge pattern and the second charge pattern so that the number of charge values ​​included in the first charge pattern and the second charge pattern is the same in step S220. For example, processor 130 may divide the charge pattern into two equal patterns and classify one pattern into the first charge pattern and the remaining pattern into the second charge pattern. Processor 130 may perform step S230 simultaneously with step S210 or step S220, or after step S220. The processor 130 may arbitrarily extract the charge value of the first charge pattern, the charge value of the second charge pattern, the discharge value of the first discharge pattern, or the discharge value of the second discharge pattern classified in step S230. The processor 130 may generate a virtual power pattern that is similar to the actual power pattern of the energy storage system 20 by arbitrarily extracting the charge pattern and the discharge pattern subdivided in step S230. For a specific method by which the processor 130 arbitrarily extracts the charge value or the discharge value subdivided in step S230, please refer to the description of step S250.

[0070] In step S240, processor 130 may generate the first and second sets taking into account the ratio of positive and negative numbers. According to an embodiment, processor 130 may generate the first and second sets containing the same ratio of positive and negative numbers. For example, processor 130 may generate the first and second sets as {-1000, -999, -998, ..., 998, 999, 1000}. The ratio of positive and negative numbers included in the first and second sets generated by processor 130 is not necessarily fixed. According to an embodiment, processor 130 may adjust the ratio of positive and negative numbers included in the first and / or second sets. Processor 130 may perform step S240 after or simultaneously with step S200, step S210, step S220, or step S230.

[0071] Step S250 may be substantially the same as step S120 of FIG. 2. In step S250, the processor 130 may extract a power value for generating a virtual charge / discharge pattern of the energy storage system 20. According to an embodiment, the processor 130 may extract, as a power value, any one of a charge value of a first charge pattern, a charge value of a second charge pattern, a discharge value of a first discharge pattern, and a discharge value of a second discharge pattern. The processor 130 may extract the power value based on any first value and any second value for generating a virtual charge / discharge pattern. The processor 130 may select the second value based on the first value. The processor 130 may perform step S250 after step S230 or step S240, or may perform step S250 simultaneously with step S240.

[0072] According to an embodiment, processor 130 may select the first value from any number of sets G={1, 2} and may select the second value from any number of sets E={11, 12} or any number of sets F={21, 22}. According to an embodiment, processor 130 may select the second value from set E if the first value is 1, or from set F if the first value is 2. According to an embodiment, processor 130 may extract a power value from the first charging pattern if the second value is 11, from the first discharging pattern (or the second discharging pattern) if the second value is 12, from the second charging pattern if the second value is 21, or from the second discharging pattern (or the first discharging pattern) if the second value is 22.

[0073] According to another embodiment, processor 130 may select the first value from any number of sets G={1, 2}, and may select the second value from the first set or the second set generated in step S240. According to an embodiment, processor 130 may select the second value from the first set if the first value is 1, or may select the second value from the second set if the first value is 2. According to an embodiment, processor 130 may extract the power value from the first charging pattern if the first value is 1 and the second value is 0 or a positive number, from the first discharging pattern (or the second discharging pattern) if the first value is 1 and the second value is a negative number, from the second charging pattern if the first value is 2 and the second value is 0 or a positive number, or from the second discharging pattern (or the first discharging pattern) if the first value is 2 and the second value is a negative number.

[0074] Step S260 may be substantially the same as step S130 of FIG. 2. Processor 130 may repeat step S250 of extracting either a charge value or a discharge value as a power value and sequentially arrange the power values ​​extracted in step S250. At this time, the sequentially arranged power values ​​may be a virtual power pattern of energy storage system 20. Before repeating step S250 of extracting a power value, processor 130 may delete a previously extracted power value from the first charging pattern, the second charging pattern, the first discharging pattern, or the second discharging pattern. By deleting a previously extracted power value from the first charging pattern, the second charging pattern, the first discharging pattern, or the second discharging pattern, processor 130 may prevent a power value identical to a previously extracted charge value or discharge value from being extracted.

[0075] In step S270, the processor 130 may calculate the charge / discharge amount by referring to the power value extracted in step S250 in accordance with Equation 4. The processor 130 may perform step S270 after step S250 or step S260, or may perform them simultaneously.

[0076]

number

[0077] In step S280, the processor 130 may generate remaining capacity (SoC; State of Charge, unit: [%]) information by referring to [Equation 5] the charge / discharge amount calculated in step S270. The processor 130 may preset the initial remaining capacity of the energy storage system 20 to a specific value. For example, the processor 130 may set the initial remaining capacity of the energy storage system 20 to 50%. The processor 130 may perform step S280 after step S270 or simultaneously therewith.

[0078]

number

[0079] The processor 130 can generate a virtual remaining capacity graph of the energy storage system 20 based on the remaining capacity information. The power pattern generation device 100 can output the virtual remaining capacity graph of the energy storage system 20 generated according to the embodiment of the present specification via the output unit 140.

[0080] FIG. 4 is a flowchart illustrating a power pattern generation method according to one embodiment disclosed herein.

[0081] Referring to FIG. 4, the method of generating a power pattern for the energy storage system 20 by the power pattern generation device 100 may include a step (S300) in which the processor 130 calculates the depth of discharge from the remaining capacity information, a step (S310) in which the calculated depth of discharge value is less than a reference value of the depth of discharge (DOD) requested by the user 30, and / or a step (S320) in which the power pattern and the remaining capacity information are output.

[0082] Steps S300 to S320 will be specifically described below with reference to FIGS.

[0083] In step S300, processor 130 may calculate the depth of discharge from the remaining capacity information. Processor 130 may perform step S300 after or simultaneously with step S280 of Fig. 3. Processor 130 may calculate the depth of discharge of the virtual pattern by referring to [Equation 6].

[0084]

number

[0085] In step S310, the processor 130 may determine whether the depth of discharge of the generated power pattern satisfies the range required by the user 30. The processor 130 may determine whether the depth of discharge calculated in step S300 is less than a reference value of depth of discharge (DOD) input by the user 30. If the depth of discharge calculated in step S300 is equal to or greater than the reference value of depth of discharge (DOD) input by the user 30, the processor 130 may determine that the depth of discharge of the generated power pattern does not satisfy the range required by the user 30. According to an embodiment, if the processor 130 determines that the depth of discharge of the generated power pattern does not satisfy the range required by the user 30, the processor 130 may regenerate the power pattern. To generate a power pattern again, processor 130 may repeat the steps of extracting a power value (S120 or S250), generating a power pattern based on the power value (S130 or S260), calculating a charge / discharge amount based on the power value (S270), and generating remaining capacity information based on the charge / discharge amount (S280). Since processor 130 performs the step of extracting a power value (S120 or S250) based on an arbitrary first value and / or second value, the discharge depth of a power pattern generated again under the same conditions may satisfy the range required by user 30.

[0086] In step S320, the output unit 140 can output the power pattern and remaining capacity information generated by the processor 130. The output unit 140 can perform step S320 when the processor 130 determines that the depth of discharge of the power pattern generated in step S310 satisfies the range required by the user 30.

[0087] FIG. 5 is a flowchart illustrating a power pattern generation method according to one embodiment disclosed herein.

[0088] Referring to FIG. 5, the method of generating a power pattern for the energy storage system 20 by the power pattern generation device 100 may include the steps of: a step (S400) in which the processor 130 calculates a depth of discharge from remaining capacity information; a step (S410) in which the calculated depth of discharge value is less than a reference value for depth of discharge (DOD) requested by the user 30; a step (S420) in which the number of iterations for repeatedly generating the power pattern exceeds a reference iteration count requested by the user 30; a step (S430) in which the ratio of positive numbers to negative numbers included in the first set and the second set is adjusted; and / or a step (S440) in which the power pattern and remaining capacity information are output.

[0089] Steps S400 to S440 will be specifically described below with reference to FIGS.

[0090] Step S400 may be substantially the same as step S300 of FIG.

[0091] Step S410 may be substantially the same as step S310 of Fig. 4. When the processor 130 generates a power pattern again in step S410, the processor 130 may count the number of times the power pattern generation is repeated.

[0092] In step S420, the processor 130 may determine whether the number of iterations exceeds a reference iteration count input by the user 30. If the number of iterations is equal to or less than the reference iteration count, the processor 130 may determine that the number of iterations does not satisfy the range required by the user 30. According to an embodiment, if the processor 130 determines that the number of iterations does not satisfy the range required by the user 30, the processor 130 may repeat the steps of extracting power values ​​(S120 or S250), generating a power pattern based on the power values ​​(S130 or S260), calculating charge / discharge amounts based on the power values ​​(S270), and generating remaining capacity information based on the charge / discharge amounts (S280) under conditions that are the same as or similar to the existing conditions. The term "similar conditions" may refer to a case where the processor 130 changes other conditions without adjusting the ratio of positive and negative numbers included in the first and second sets.

[0093] In step S430, processor 130 may adjust the ratio of positive numbers to negative numbers included in the first set and the second set. If processor 130 determines in step S420 that the number of times the power pattern generation has been repeated satisfies the range required by user 30, processor 130 may perform step S430. Processor 130 may adjust the ratio of positive numbers to negative numbers included in the first set and the second set to be different. According to an embodiment, processor 130 may adjust the first set so that the ratio of positive numbers included in the first set is higher, and adjust the second set so that the ratio of negative numbers included in the second set is higher. According to an embodiment, processor 130 may increase all numbers included in the first set by 1 and decrease all numbers included in the second set by 1. According to a specific embodiment, if the first set and the second set are {-1000, -999, -998, ..., 998, 999, 1000}, the processor 130 may adjust the first set to {-999, -998, -997, ..., 999, 1000, 1001} and the second set to {-1001, -1000, -999, ..., 997, 998, 999} in step S430. After performing step S430, the processor 130 may repeatedly perform the steps of extracting power values ​​(S120 or S250), generating a power pattern based on the power values ​​(S130 or S260), calculating charge / discharge amounts based on the power values ​​(S270), and generating remaining capacity information based on the charge / discharge amounts (S280). When repeating step S250, the processor 130 can extract power values ​​based on the first and second sets in which the ratio of positive and negative numbers is adjusted, so that the regenerated power pattern can have a different ratio of power charging patterns and power discharging patterns that constitute the power pattern per unit time.

[0094] Step S440 may be substantially the same as step S320 in FIG.

[0095] As used above, terms such as "comprise," "comprise," or "have" mean that the relevant element may be present, unless otherwise specified, and should be interpreted as including other elements rather than excluding other elements. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments disclosed herein belong, unless otherwise defined. Commonly used terms, such as dictionary-defined terms, should be interpreted in a manner consistent with the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0096] The above description is merely an illustrative example of the technical concepts disclosed in this specification, and various modifications and variations are possible by a person skilled in the art to which the embodiments disclosed in this specification pertain without departing from the essential characteristics of the embodiments disclosed in this specification. Therefore, the embodiments disclosed in this specification are intended to illustrate, not limit, the technical concepts of the embodiments disclosed in this specification, and such embodiments do not limit the scope of the technical concepts disclosed in this specification. The scope of protection of the technical concepts disclosed in this specification should be interpreted by the scope of the following claims, and all technical concepts within the scope equivalent thereto should be interpreted as being within the scope of the present specification. [Explanation of symbols]

[0097] 10 Power Generation System 20 Energy Storage Systems 100 Power pattern generator 110 Input section 120 memory 130 processors 140 Output section

Claims

1. A step of generating a charge / discharge pattern of an energy storage system (ESS) based on a normal distribution with a mean of 0, taking into account a maximum C-rate (Max C-rate) and a required time (Time Step) of a unit charge / discharge operation; classifying the charge / discharge patterns into charge patterns and discharge patterns; Extracting a power value from the charging pattern or the discharging pattern based on an arbitrary first value to generate a virtual charging / discharging pattern of the energy storage system (ESS); generating a power pattern based on the power value.

2. 2. The power pattern generating method according to claim 1, further comprising the step of adjusting a part of a charge value of the charging pattern or a discharge value of the discharging pattern within a range that satisfies an equivalent cycle of the energy storage system (ESS).

3. calculating a charge / discharge amount based on the power value; The power pattern generating method according to claim 1 , further comprising: generating remaining capacity (SoC, State of Charge) information based on the charge / discharge amount.

4. generating a first charging pattern and a second charging pattern based on the charging pattern, and generating a first discharging pattern and a second discharging pattern based on the discharging pattern; 4. The power pattern generating method of claim 3, wherein the step of extracting the power value extracts a power value from any one of the first charging pattern, the second charging pattern, the first discharging pattern, and the second discharging pattern based on the first value and an arbitrary second value for generating a virtual charging / discharging pattern of the energy storage system (ESS).

5. generating the first and second sets taking into account the ratio of positive and negative numbers; The method of claim 4 , wherein the second value is selected from the first set or the second set.

6. 6. The power pattern generating method according to claim 5, further comprising the steps of: when the depth of discharge acquired from the remaining capacity information is equal to or greater than a reference value, extracting a power value based on the first value and the second value; generating a power pattern based on the extracted power value; calculating the charge / discharge amount based on the extracted power value; and generating remaining capacity information based on the charge / discharge amount.

7. 7. The power pattern generation method of claim 6, further comprising: adjusting a ratio of positive numbers and negative numbers included in the first set and the second set when the depth of discharge obtained from the remaining capacity information is equal to or greater than a reference value and the repeating step is performed more than a reference number of times.

8. a memory for storing at least one instruction, a processor for executing the at least one instruction stored in the memory, and an output unit for outputting an execution result of the processor, The processor: A power pattern generation device configured to perform operations of: generating a normal distribution-based charge / discharge pattern having an average of 0 in consideration of a maximum C-rate (Max C-rate) and a required time (Time Step) of a unit charge / discharge operation; classifying the charge / discharge pattern into a charge pattern and a discharge pattern; extracting a power value from the charge pattern or the discharge pattern based on an arbitrary first value for generating a virtual charge / discharge pattern of an energy storage system (ESS); and generating a power pattern based on the power value.

9. The processor:

9. The power pattern generation device according to claim 8, further configured to perform an operation of adjusting a part of a charge value of the charge pattern or a discharge value of the discharge pattern within a range satisfying an equivalent cycle of the energy storage system (ESS).

10. The processor:

9. The power pattern generation device according to claim 8, further configured to perform an operation of calculating a charge / discharge amount based on the power value, and generating remaining capacity (SoC, State of Charge) information based on the charge / discharge amount.

11. The processor: The device is further configured to generate a first charging pattern and a second charging pattern based on the charging pattern, and to generate a first discharging pattern and a second discharging pattern based on the discharging pattern, 11. The power pattern generation device of claim 10, wherein the processor extracts the power value from any one of the first charging pattern, the second charging pattern, the first discharging pattern, and the second discharging pattern based on the first value and an arbitrary second value for generating a virtual charging / discharging pattern of the energy storage system (ESS).

12. The processor: further configured to perform an operation of generating the first set and the second set taking into account the ratio of positive numbers and negative numbers; The power pattern generator of claim 11 , wherein the second value is selected from the first set or the second set.

13. The processor:

13. The power pattern generation device according to claim 12, wherein, when a depth of discharge acquired from the remaining capacity information is equal to or greater than a reference value, the power pattern generation device is configured to repeatedly perform an operation of extracting a power value based on the first value and the second value, an operation of generating a power pattern based on the extracted power value, an operation of calculating the charge / discharge amount based on the extracted power value, and an operation of generating remaining capacity information based on the charge / discharge amount.

14. The processor:

14. The power pattern generation device of claim 13, further configured to perform an operation of adjusting a ratio of positive numbers and negative numbers included in the first set and the second set when the depth of discharge acquired from the remaining capacity information is equal to or greater than a reference value and the repeating step is performed more than a reference number of times.

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