Power system and operating method thereof

Abstract

A power system and an operating method thereof according to an embodiment of the present invention can achieve high flexibility, high reliability, ease of maintenance, high scalability, and high efficiency of the power system by supporting multi-sector coupling enabling more efficient linking and coupling through the adoption of power to water energy (P2WE).

Description

Power system and method of operation thereof

[0001] This document relates to power systems and their operating methods.

[0002] To efficiently utilize energy, sector coupling is gaining attention as an integrated energy management technology that effectively connects the supply and demand sectors through conversion, storage, and regeneration between electric and non-electric power, along with the energy mix of the energy supply sector. Sector coupling refers to a range of technologies that enhance the efficiency of overall energy use and contribute to operational stability through close linkages between energy sectors. While efficiency enhancement through interconnection between energy systems and integrated energy management has long been a topic of research, its recent resurgence stems from the increasing volatility resulting from the rapid expansion and adoption of renewable energy. While existing integrated energy management approaches have focused on efficient energy mixes and utilization, the recently emerging sector coupling is differentiated by its ability to address power grid instability and inefficiencies in linkages with the demand sector due to the intermittent or excessive introduction of renewable energy.

[0003] According to one embodiment of the present document, a power system and an operating method thereof can be provided that support multi-sector coupling that enables more efficient linking and coupling through the introduction of the P2WE (power to water energy) concept.

[0004] The problem to be solved in this disclosure is not limited to the problem mentioned above, and can be expanded in various ways without departing from the spirit and scope of this disclosure.

[0005] According to one embodiment of the present document, a power system is provided, comprising a power source, a power grid connected to the power source, and a consumer receiving power from the power grid, wherein the power source includes at least one variable renewable energy (VRE) source and is connected to the power grid via a power bank, wherein the power bank includes a conversion module comprising at least one module selected from the group consisting of a power to heat (P2H) module, a power to gas (P2G) module, and a power to mobility (P2M) module, a power to water energy (P2WE) module, at least one module constituting the conversion module, and a control module connected to the P2WE module, wherein the control module operates at least one module constituting the conversion module by interconnecting the modules constituting the conversion module based on the P2WE module so that secondary variability is minimized in each of the modules constituting the conversion module.

[0006] Here, the P2H module can convert power received from the variable renewable energy (VRE) source into heat, store the converted heat, and supply the heat to the user through a heat energy grid, or convert the heat into power through a heat to power (H2P) module and supply it to the power grid.

[0007] Here, the P2G module can convert electricity received from the variable renewable energy (VRE) source into gas, store the converted gas, and supply the gas to the user through a gas energy grid, or convert the gas into electricity through a gas to power (G2P) module and supply it to the electricity grid.

[0008] Here, the P2G module can produce the gas using a technology including seawater electrolysis.

[0009] Here, the P2M module can supply power received from the variable renewable energy (VRE) source to the vehicle, or supply power from the vehicle to the power grid through the M2P (mobility to power) module.

[0010] Here, the P2WE module converts power received from the variable renewable energy (VRE) source into fresh water or fresh water and electrolyte, stores the converted fresh water and electrolyte, and supplies the fresh water to the P2H module through a water energy grid, supplies the fresh water and the electrolyte to the P2G module through the water energy grid, or converts the fresh water and the electrolyte back into power through a WE2P (water energy to power) module and supplies the power to at least one module among the power grid, the P2H module, the P2G module, and the P2M module.

[0011] Here, the P2WE module can produce the fresh water and the electrolyte using CO2-linked seawater salt conversion and convert and store them into energy.

[0012] Here, the control module can operate the power grid, the heat energy grid, the gas energy grid, and the water energy grid in a mutually interconnected manner based on the P2WE module.

[0013] Here, the control module can control the power grid, the heat energy grid, the gas energy grid, and the water energy grid to be mutually coupled so that secondary variability is minimized in each module constituting the conversion module based on at least one piece of information from among the power supply of the variable renewable energy (VRE) source, the power demand of the user, the heat supply of the P2H module, the heat storage of the P2H module, the heat demand of the user, the gas supply of the P2G module, the gas storage of the P2G module, the gas demand of the user, the freshwater supply of the P2WE module, the freshwater storage of the P2WE module, the freshwater demand of the P2G module, the electrolyte supply of the P2WE module, the electrolyte storage of the P2WE module, and the electrolyte demand of the P2G module.

[0014] Here, the control module obtains current information corresponding to input data including at least one of season, date, time, weather, temperature, power supply, power demand, heat supply, heat demand, gas supply, and gas demand, inputs the current information into an AI (artificial intelligence)-based control network that has been learned in advance and constructed, and, based on output data of the AI-based control network, couples the power grid, the heat energy grid, the gas energy grid, and the water energy grid to control each module constituting the conversion module so that secondary variability is minimized.

[0015] Here, the user can receive power from the power grid and energy through at least one energy grid among the heat energy grid, the gas energy grid, and the water energy grid.

[0016] Here, the variable renewable energy (VRE) source may be a source that supplies electricity generated through solar power, a source that supplies electricity generated through hydropower, a source that supplies electricity generated through wind power, or a source that supplies electricity generated through geothermal heat.

[0017]

[0018] A method of operating a power system according to one embodiment of the present document is an operating method performed by a power system comprising a power source, a power grid connected to the power source, and a consumer receiving power from the power grid, the method comprising: the power grid receiving power from the power source, the power source including at least one variable renewable energy (VRE) source and connected to the power grid via a power bank; And the power grid includes a step of supplying power to the user; and the power bank includes a conversion module composed of at least one module among a P2H (power to heat) module, a P2G (power to gas) module, and a P2M (power to mobility) module, a P2WE (power to water energy) module, at least one module constituting the conversion module, and a control module connected to the P2WE module, and the control module may further include a step of operating at least one module constituting the conversion module by interconnecting the at least one module constituting the conversion module based on the P2WE module so that secondary variability is minimized in each module constituting the conversion module.

[0019] Here, the P2H module can convert power received from the variable renewable energy (VRE) source into heat, store the converted heat, and supply the heat to the user through a heat energy grid, or convert the heat into power through a heat to power (H2P) module and supply it to the power grid.

[0020] Here, the P2G module can convert electricity received from the variable renewable energy (VRE) source into gas, store the converted gas, and supply the gas to the user through a gas energy grid, or convert the gas into electricity through a gas to power (G2P) module and supply it to the electricity grid.

[0021] Here, the P2M module can supply power received from the variable renewable energy (VRE) source to the vehicle, or supply power from the vehicle to the power grid through the M2P (mobility to power) module.

[0022] Here, the P2WE module converts power received from the variable renewable energy (VRE) source into fresh water or fresh water and electrolyte, stores the converted fresh water and electrolyte, and supplies the fresh water to the P2H module through a water energy grid, supplies the fresh water and the electrolyte to the P2G module through the water energy grid, or converts the fresh water and the electrolyte into power through a WE2P (water energy to power) module and supplies the power to at least one module among the power grid, the P2H module, the P2G module, and the P2M module.

[0023] Here, the interconnected operation step may be performed by the control module interconnecting and operating the power grid, the heat energy grid, the gas energy grid, and the water energy grid based on the P2WE module.

[0024] Here, the interconnected operation step may be performed by the control module controlling the power grid, the heat energy grid, the gas energy grid, and the water energy grid to be mutually coupled based on at least one piece of information from among the power supply of the variable renewable energy (VRE) source, the power demand of the user, the heat supply of the P2H module, the heat storage of the P2H module, the heat demand of the user, the gas supply of the P2G module, the gas storage of the P2G module, the gas demand of the user, the freshwater supply of the P2WE module, the freshwater storage of the P2WE module, the freshwater demand of the P2G module, the electrolyte supply of the P2WE module, the electrolyte storage of the P2WE module, and the electrolyte demand of the P2G module, so as to minimize secondary variability in each module constituting the conversion module.

[0025] Here, the mutually linked operation step may be performed by the control module acquiring current information corresponding to input data including at least one of season, date, time, weather, temperature, power supply, power demand, heat supply, heat demand, gas supply, and gas demand, inputting the current information into an AI (artificial intelligence)-based control network that has been learned in advance and constructed, and controlling the power grid, the heat energy grid, the gas energy grid, and the water energy grid to be mutually coupled based on output data of the AI-based control network so that secondary variability is minimized in each module constituting the conversion module.

[0026] According to one embodiment of this document, by supporting multi-sector coupling that enables more efficient linking and coupling through the introduction of the power to water energy (P2WE) concept, high flexibility, high reliability, ease of maintenance, high expandability, and high efficiency of the power system can be achieved.

[0027] The effects according to various embodiments of this document are not limited to the effects described above, and it is obvious to those skilled in the art that various effects are inherent in the present disclosure.

[0028] FIG. 1 is a block diagram illustrating a power system according to one embodiment of the present document.

[0029] Figure 2 is a schematic diagram showing an example of the power bank shown in Figure 1.

[0030] Figure 3 is a diagram showing an example of the operation flow of the power bank illustrated in Figure 1.

[0031] Figure 4 is a drawing showing an example of the operation sequence of the power bank illustrated in Figure 1.

[0032] FIG. 5 is a flowchart for explaining an operation method of a power system according to one embodiment of the present document.

[0033] FIG. 6 is a diagram for explaining the operating performance of a power system according to one embodiment of the present document.

[0034] Hereinafter, embodiments of the present document will be described in detail with reference to the attached drawings. The advantages and features of the embodiments of the present document, as well as the methods for achieving them, will become clearer with reference to the detailed description below, along with the attached drawings. However, the embodiments of the present document are not limited to the embodiments disclosed below and may be implemented in various different forms, and the embodiments of the present document are defined solely by the scope of the claims.

[0035] Throughout this specification, identical reference numerals refer to identical components. Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in their common sense to those of ordinary skill in the art to which the embodiments of this document pertain. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0036] In this specification, terms such as "first" and "second" are used to distinguish one component from another, and the scope of the invention is not limited by these terms. For example, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

[0037] In this specification, the identification numbers (e.g., a, b, c, etc.) for each step are used for convenience of explanation and do not describe the order of each step. Each step may occur in a different order than specified unless the context clearly indicates a specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the opposite order.

[0038] In this specification, expressions such as “has”, “can have”, “includes” or “may include” indicate the presence of a corresponding feature (e.g., a component such as a number, function, operation, or part), and do not exclude the presence of additional features.

[0039] In addition, the term '~ unit' described in this specification means a software or hardware component such as a field-programmable gate array (FPGA) or an ASIC, and the '~ unit' performs certain roles. However, the '~ unit' is not limited to software or hardware. The '~ unit' may be configured to be on an addressable storage medium and may be configured to play one or more processors. Thus, as an example, the '~ unit' includes components such as software components, object-oriented software components, class components, and task components, as well as processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data structures, and variables. The functionality provided within the components and '~ units' may be combined into a smaller number of components and '~ units' or further separated into additional components and '~ units'.

[0040]

[0041] Hereinafter, a power system and its operating method according to one embodiment of the present document will be described in detail with reference to the attached drawings.

[0042]

[0043] First, a power system according to one embodiment of the present document will be described with reference to FIGS. 1 to 4.

[0044] FIG. 1 is a block diagram for explaining a power system according to one embodiment of the present document, FIG. 2 is a schematic diagram showing an example of a power bank shown in FIG. 1, FIG. 3 is a diagram showing an example of an operation flow of the power bank shown in FIG. 1, and FIG. 4 is a diagram showing an example of an operation sequence of the power bank shown in FIG. 1.

[0045] Referring to FIGS. 1 to 4, a power system (10) according to an embodiment of the present document comprises a power supply source (200), a power grid connected to the power supply source (200), and a consumer (300) supplied with power from the power grid. By supporting multi-sector coupling based on a P2WE (power to water energy) module, the power system (10) can achieve high flexibility, high reliability, ease of maintenance, high expandability, and high efficiency of the power system.

[0046] Here, the power supply source (200) includes at least one variable renewable energy (VRE) source (210) and can be connected to the power grid via a power bank (100). The variable renewable energy (VRE) source (210) can be a source that supplies power generated through solar power, a source that supplies power generated through hydropower, a source that supplies power generated through wind power, or a source that supplies power generated through geothermal power.

[0047] In addition, the user (300) can receive power from the power grid and energy through at least one energy grid among a heat energy grid, a gas energy grid, and a water energy grid. For example, the user (300) can be supplied with power-heat-gas-water network in a chain-like manner for transport, industry, residence, agriculture, service, etc.

[0048] For example, referring to FIGS. 2 to 4, the power bank (100) can receive power from power sources including variable renewable energy (VRE) sources using solar, wind, bioenergy, geothermal, hydro, waste heat, etc., and supply energy to end-users through a power grid, a heat energy grid, a gas energy grid, and a water energy grid. At this time, the power bank (100) can perform multi-sector coupling to organically interconnect and operate the power grid, the heat energy grid, the gas energy grid, and the water energy grid. That is, the power bank (100) is based on a P2WE (power to water energy) system, and organically interconnects a P2H (power to heat) system, a P2G (power to gas) system, a P2M (power to mobility) system, and a P2W (power to water) system, thereby minimizing secondary variability such as variability of a heat system, variability of a gas system, and variability of a water system, while minimizing primary variability such as variability of a power system.

[0049]

[0050] To this end, the power bank (100) may include, as illustrated in FIG. 1, a bypass module (110), a conversion module composed of at least one module among a P2H module (120), a P2G module (130), and a P2M module (150), a P2WE module (140), and a control module connected to at least one module constituting the conversion module, the bypass module (110), and the P2WE module (140).

[0051] The bypass module (110) can supply power received from a power supply source (200) to a user (300) through a power grid.

[0052] The P2H module (120) can convert electricity received from a variable renewable energy (VRE) source (210) into heat, store the converted heat, and supply the heat to a user (300) through a heat energy grid, or convert the heat into electricity through a heat to power (H2P) module and supply it to the power grid.

[0053] The P2G module (130) converts electricity received from a variable renewable energy (VRE) source (210) into gas such as hydrogen, methane, etc., stores the converted gas, and supplies the gas to a consumer (300) through a gas energy grid, or converts the gas into electricity through a gas-to-power (G2P) module and supplies it to the electricity grid. For example, the P2G module (130) can produce gas using seawater electrolysis.

[0054] The P2WE module (140) converts electricity received from a variable renewable energy (VRE) source (210) into fresh water or fresh water and electrolyte, stores the converted fresh water and electrolyte, supplies the fresh water to the P2H module (120) through the water energy grid, supplies the fresh water and electrolyte to the P2G module (130) through the water energy grid, or converts the fresh water and electrolyte back into electricity through the WE2P (water energy to power) module and supplies it to the electricity grid, at least one of the P2H module (120), the P2G module (130), and the P2M module (150). For example, the P2WE module (140) can produce fresh water and electrolyte using CO2-linked seawater salt conversion and convert and store them into energy. Meanwhile, the P2WE module (140) may be configured separately as a P2W system that performs storage / supply of fresh water and a P2WE system that performs storage / supply of electrolyte, as illustrated in FIG. 2.

[0055] The P2M module (150) can supply power received from a variable renewable energy (VRE) source (210) to a vehicle, or supply power from the vehicle to the power grid through an M2P (mobility to power) module.

[0056] The control module (160) controls the overall operation of the power bank (100), and can operate at least one or more modules constituting the conversion module based on the P2WE module (140) in a mutually interconnected manner so that secondary variability is minimized in each module constituting the conversion module.

[0057] Here, secondary variability can refer to variability in the heat system, gas system, water system, etc. In addition, primary variability can refer to variability in the power system.

[0058] That is, the control module (160) can operate the power grid, heat energy grid, gas energy grid, and water energy grid in interconnection based on the P2WE module (140). In more detail, the control module (160) controls the power grid, the heat energy grid, the gas energy grid, and the water energy grid based on at least one piece of information from among the power supply of the variable renewable energy (VRE) source (210), the power demand of the user (300), the heat supply of the P2H module (120), the heat storage of the P2H module (120), the heat demand of the user (300), the gas supply of the P2G module (130), the gas storage of the P2G module (130), the gas demand of the user (300), the freshwater supply of the P2WE module (140), the freshwater storage of the P2WE module (140), the freshwater demand of the P2G module (130), the electrolyte supply of the P2WE module (140), the electrolyte storage of the P2WE module (140), and the electrolyte demand of the P2G module (130). By coupling, the secondary volatility can be controlled to be minimized in each module that constitutes the conversion module.

[0059] For example, when a primary volatility occurs in the power system, i.e., when power supply to a consumer (300) through the power grid is not smooth, the control module (160) can check secondary volatility such as volatility in the heat system, volatility in the gas system, volatility in the water system, etc., and supply additional power to the power grid through a module (P2H module, P2G module, P2M module, etc.) in which secondary volatility does not occur, thereby minimizing the primary volatility while minimizing the secondary volatility.

[0060] At this time, the control module (160) obtains current information corresponding to input data including at least one of season, date, time, weather, temperature, power supply, power demand, heat supply, heat demand, gas supply, and gas demand, inputs the current information into an AI (artificial intelligence)-based control network that has been learned in advance and constructed, and, based on the output data of the AI-based control network, controls the power grid, the heat energy grid, the gas energy grid, and the water energy grid to be mutually coupled so that secondary volatility is minimized in each module constituting the conversion module. For example, the AI-based control network is composed of a deep neural network model such as a long short-term memory (LSTM), and can be learned and constructed using training data including actual data for a certain period of time in the past for input data such as season, date, time, weather, temperature, power supply, power demand, heat supply, heat demand, gas supply, gas demand, etc. and actual control information (mutual coupling information, etc.) corresponding thereto.

[0061]

[0062]

[0063] Then, with reference to FIG. 5, an operation method of a power system according to one embodiment of the present document will be described.

[0064] FIG. 5 is a flowchart for explaining an operation method of a power system according to one embodiment of the present document.

[0065] Referring to FIG. 5, the power grid may receive power from a power source (200) that includes at least one variable renewable energy (VRE) source (210) and is connected to the power grid via a power bank (100) (S110).

[0066]

[0067] Then, the power bank (100) can supply power to the user (300), convert the power into non-power (e.g., heat, etc.) through the P2X module, supply non-power to the user (300), or supply power through re-powering to the user (300) (S120).

[0068]

[0069] At this time, the control module (160) of the power bank (100) can operate at least one or more modules constituting the conversion module based on the P2WE module (140) by interconnecting them so that secondary volatility is minimized in each module constituting the conversion module (S130).

[0070] That is, the control module (160) can operate the power grid, heat energy grid, gas energy grid, and water energy grid in interconnection based on the P2WE module (140). In more detail, the control module (160) controls the power grid, the heat energy grid, the gas energy grid, and the water energy grid based on at least one piece of information from among the power supply of the variable renewable energy (VRE) source (210), the power demand of the user (300), the heat supply of the P2H module (120), the heat storage of the P2H module (120), the heat demand of the user (300), the gas supply of the P2G module (130), the gas storage of the P2G module (130), the gas demand of the user (300), the freshwater supply of the P2WE module (140), the freshwater storage of the P2WE module (140), the freshwater demand of the P2G module (130), the electrolyte supply of the P2WE module (140), the electrolyte storage of the P2WE module (140), and the electrolyte demand of the P2G module (130). By coupling, the secondary volatility can be controlled to be minimized in each module that constitutes the conversion module.

[0071] At this time, the control module (160) obtains current information corresponding to input data including at least one of season, date, time, weather, temperature, power supply, power demand, heat supply, heat demand, gas supply, and gas demand, inputs the current information into an AI-based control network that has been learned in advance and constructed, and based on the output data of the AI-based control network, the power grid, the heat energy grid, the gas energy grid, and the water energy grid can be mutually coupled to control the secondary variability in each module constituting the conversion module to be minimized.

[0072]

[0073]

[0074] Then, the operating performance of a power system according to one embodiment of the present document will be described with reference to FIG. 6.

[0075] FIG. 6 is a diagram for explaining the operating performance of a power system according to one embodiment of the present document.

[0076] As shown in Fig. 6, the output curtailment power capacity of renewable energy is applied to "10 MW", that is, "4 MW" of a P2H (power to heat) module, "2 MW" of a P2G (power to gas) module, "2 MW" of a P2M (power to mobility) module, "1.7 MW" of a P2WE (power to water energy) module, and "0.3 MW" of a P2W (power to water) module, and the results of "132 times" per year with an output limit of "4 hours" are as shown in [Table 1] and [Table 2] below. [Table 1] shows the results of performing multi-sector coupling according to one embodiment of this document (i.e., results when applying multi-P2X), and [Table 2] shows the results of performing single-sector coupling (i.e., results when applying single-sector P2X).

[0077] At this time, the price was calculated based on the average price of the first week of April 2023 as follows.

[0078] (1) SMP = 166 won / kWh

[0079] (2) Mg = 4,069,000 won / ton

[0080] (3) CO2 emission rights = 15,000 won / ton

[0081] (4) Heat rate = 102.8 won / Mcal {Average single rate applied for residential / business / public heating (hot water)}

[0082] (5) Green H2 price (Incheon charging station) = 9,800 won / kg

[0083] (6) Seawater desalination = 1,300 won / ton

[0084] (7) Seawater desalination freshwater consumption energy = 3.5 kWh / m 3 (80% utilization rate of seawater desalination)

[0085] (8) Electricity charging fee = 320 won / kWh (based on a 50kW rapid charger)

[0086] VRE / year (million won) Category Products / year Price (million won) 5.3 GWh (876.4) P2H Heat 5.3 GWh TH 467.2P2WEWE2PP2X Buffer840MWh1400.2CO2reduction244tons0.6Minerals(Mg)132tons537.0P2WPure water584,000tons759.2P2GGreen H216.42tons160.8P2MElectric Charge1GWh(charging)321.0Total"X"(5 types)"product"(8 types)-2,386.0

[0087] VRE / year (million won) Category Products / year Price (million won) 5.3 GWh (876.4) P2H Heat 13.25 GWh TH1,168.0 VRE / year (million won) Category Products / year Price (million won) 5.3 GWh (876.4) P2G Green H2 82.1 tons 804.0 VRE / year (million won) Category Products / year Price (million won) 5.3 GWh (876.4) P2MElectric Charge 5 GWh (charging) 1,605.0

[0088] In this way, the power system according to one embodiment of the present document can achieve high flexibility, high reliability, ease of maintenance, high expandability, and high efficiency of the power system by supporting multi-sector coupling based on the P2WE module.

[0089] - High flexibility: handles various power requirements / data protocols

[0090] Compared to monolithic systems, P2WE is advantageous in addressing the input requirements of variable renewable energy (VRE), which has numerous variables, and secondary fluctuations in the demand sector. In particular, P2WE, with its large-capacity, ultra-long-cycle energy storage capability, can serve as a buffer to enable continuous operation in response to fluctuations in the demand sector of other "X" systems, thereby completing true coupling.

[0091] - High reliability: Improved response to discontinued P2X errors / issues

[0092] Since the P2X system has different switching reaction speeds depending on the type of "X", it is advantageous to have a configuration of "X" with different reaction speeds to respond to the power demand characteristics of variable renewable energy (VRE) that is supplied irregularly at very short time intervals.

[0093] - Ease of maintenance: Minimize individual maintenance / system downtime

[0094] In the case of a single-type system, if a problem occurs in the system, the entire system cannot operate during the maintenance period, but in the case of a multi-type system, continuous system operation is possible even if one "X" system fails.

[0095] - High scalability: Easy to add P2X concept, no need to redesign system

[0096] In the case of a single product, the entire system needs to be supplemented to configure an additional “X”, but in the case of multiple products, only the essential components of the additional “X” need to be linked, so scalability is excellent.

[0097] - High efficiency: Minimized power loss, improved integrated system efficiency

[0098] In the case of multiple types, it is possible to configure the optimal scenarios for the supply and demand parts, thereby maximizing the efficiency of limited energy output and securing economic feasibility.

[0099]

[0100]

[0101] The operations according to the embodiments of the present document described above may be implemented in the form of program commands that can be executed through various computer means and recorded on a computer-readable storage medium. A computer-readable storage medium refers to any medium that participates in providing commands to a processor for execution. A computer-readable storage medium may include program commands, data files, data structures, or a combination thereof. For example, it may include a magnetic medium, an optical recording medium, a memory, etc. A computer program may be distributed on a network-connected computer system so that the computer-readable code is stored and executed in a distributed manner. Functional programs, codes, and code segments for implementing the embodiments of the present document may be easily inferred by programmers in the technical field to which the embodiments of the present document belong.

[0102] The embodiments of this document are intended to illustrate technical concepts, and the scope of the technical concepts of the embodiments of this document is not limited by these embodiments. The scope of protection of the embodiments of this document should be interpreted by the claims below, and all technical concepts within the scope equivalent thereto should be construed as being included within the scope of the embodiments of this document.

[0103]

[0104] < Explanation of symbols >

[0105] 100: Power system,

[0106] 110: Power Bank,

[0107] 110: Bypass module,

[0108] 120: P2H module,

[0109] 130: P2G module,

[0110] 140: P2WE module,

[0111] 150: P2M module,

[0112] 160: Control module,

[0113] 200: Power source,

[0114] 210: Variable renewable energy sources,

[0115] 300: Acceptance

Claims

1. In a power system consisting of a power supply source, a power grid connected to the power supply source, and a consumer receiving power from the power grid, The above power supply source is, comprising at least one variable renewable energy (VRE) source, connected to the power grid via a power bank; The above power bank, A conversion module comprising at least one module among a P2H (power to heat) module, a P2G (power to gas) module, and a P2M (power to mobility) module, a P2WE (power to water energy) module, and at least one module constituting the conversion module and a control module connected to the P2WE module. The above control module, At least one or more modules constituting the conversion module are interconnected and operated based on the P2WE module so that secondary volatility is minimized in each module constituting the conversion module. Power system.

2. In paragraph 1, The above P2H module, Converting the electricity received from the above variable renewable energy (VRE) source into heat, storing the converted heat, and supplying the heat to the user through a heat energy grid, or converting the heat into electricity through a heat to power (H2P) module and supplying it to the electricity grid, The above P2G module, Converting the electricity received from the above variable renewable energy (VRE) source into gas, storing the converted gas, and supplying the gas to the user through the gas energy grid, or converting the gas into electricity through a gas to power (G2P) module and supplying it to the electricity grid, The above P2G module, The above gas is produced using seawater electrolysis, The above P2M module, Supplying power from the above variable renewable energy (VRE) source to the vehicle, or supplying power from the vehicle to the power grid through a mobility to power (M2P) module. Power system.

3. In paragraph 2, The above P2WE module, Converting the power received from the variable renewable energy (VRE) source into fresh water or fresh water and electrolyte, storing the converted fresh water and electrolyte, supplying the fresh water to the P2H module through the water energy grid, supplying the fresh water and the electrolyte to the P2G module through the water energy grid, or converting the fresh water and the electrolyte into power through a WE2P (water energy to power) module and supplying it to at least one module among the power grid, the P2H module, the P2G module, and the P2M module. Power system.

4. In paragraph 3, The above P2WE module, Producing the fresh water and electrolyte using CO2-linked seawater salt conversion and converting and storing them into energy. Power system.

5. In paragraph 3, The above control module, Based on the above P2WE module, the power grid, the heat energy grid, the gas energy grid and the water energy grid are interconnected and operated. Power system.

6. In paragraph 5, The above control module, Based on at least one piece of information from among the power supply of the variable renewable energy (VRE) source, the power demand of the user, the heat supply of the P2H module, the heat storage of the P2H module, the heat demand of the user, the gas supply of the P2G module, the gas storage of the P2G module, the gas demand of the user, the freshwater supply of the P2WE module, the freshwater storage of the P2WE module, the freshwater demand of the P2G module, the electrolyte supply of the P2WE module, the electrolyte storage of the P2WE module, and the electrolyte demand of the P2G module, the power grid, the heat energy grid, the gas energy grid, and the water energy grid are mutually coupled to control the secondary variability in each module constituting the conversion module to be minimized. Power system.

7. In paragraph 6, The above control module, Obtaining current information corresponding to input data including at least one of season, date, time, weather, temperature, power supply, power demand, heat supply, heat demand, gas supply, and gas demand, inputting the current information into an AI (artificial intelligence)-based control network that has been learned in advance, and controlling the power grid, the heat energy grid, the gas energy grid, and the water energy grid based on output data of the AI-based control network so that secondary variability is minimized in each module constituting the conversion module. Power system.

8. In paragraph 5, The above recipient is, Power is supplied from the above power grid, and energy is supplied through at least one energy grid among the heat energy grid, the gas energy grid, and the water energy grid. Power system.

9. In paragraph 1, The above variable renewable energy (VRE) sources are: Whether it is a source of electricity generated through solar power, a source of electricity generated through hydropower, a source of electricity generated through wind power, or a source of electricity generated through geothermal power, Power system.

10. An operation method performed by a power system comprising a power supply source, a power grid connected to the power supply source, and a user receiving power from the power grid, The power grid comprises at least one variable renewable energy (VRE) source and receives power from the power source connected to the power grid via a power bank; and A step in which the power grid supplies power to the user; Includes, The above power bank, A conversion module comprising at least one module among a P2H (power to heat) module, a P2G (power to gas) module, and a P2M (power to mobility) module, a P2WE (power to water energy) module, and at least one module constituting the conversion module and a control module connected to the P2WE module. A step of interconnecting and operating at least one module constituting the conversion module based on the P2WE module so that the secondary variability in each module constituting the conversion module is minimized, by the control module; A method of operating a power system further comprising:

11. In paragraph 10, The above P2H module, Converting the electricity received from the above variable renewable energy (VRE) source into heat, storing the converted heat, and supplying the heat to the user through a heat energy grid, or converting the heat into electricity through a heat to power (H2P) module and supplying it to the electricity grid, The above P2G module, Converting the electricity received from the above variable renewable energy (VRE) source into gas, storing the converted gas, and supplying the gas to the user through the gas energy grid, or converting the gas into electricity through a gas to power (G2P) module and supplying it to the electricity grid, The above P2M module, Supplying power from the above variable renewable energy (VRE) source to the vehicle, or supplying power from the vehicle to the power grid through a mobility to power (M2P) module. How the power system works.

12. In paragraph 11, The above P2WE module, Converting the power received from the variable renewable energy (VRE) source into fresh water or fresh water and electrolyte, storing the converted fresh water and electrolyte, supplying the fresh water to the P2H module through the water energy grid, supplying the fresh water and the electrolyte to the P2G module through the water energy grid, or converting the fresh water and the electrolyte into power through a WE2P (water energy to power) module and supplying it to at least one module among the power grid, the P2H module, the P2G module, and the P2M module. How the power system works.

13. In paragraph 12, The above interconnected operation steps are: The above control module is configured to operate the power grid, the heat energy grid, the gas energy grid, and the water energy grid in a mutually interconnected manner based on the P2WE module. How the power system works.

14. In paragraph 13, The above interconnected operation steps are: The control module is configured to control the power grid, the heat energy grid, the gas energy grid, and the water energy grid to be mutually coupled so as to minimize secondary variability in each module constituting the conversion module based on at least one piece of information from among the power supply of the variable renewable energy (VRE) source, the power demand of the user, the heat supply of the P2H module, the heat storage of the P2H module, the heat demand of the user, the gas supply of the P2G module, the gas storage of the P2G module, the gas demand of the user, the freshwater supply of the P2WE module, the freshwater storage of the P2WE module, the freshwater demand of the P2G module, the electrolyte supply of the P2WE module, the electrolyte storage of the P2WE module, and the electrolyte demand of the P2G module. How the power system works.

15. In paragraph 14, The above interconnected operation steps are: The control module obtains current information corresponding to input data including at least one of season, date, time, weather, temperature, power supply, power demand, heat supply, heat demand, gas supply, and gas demand, inputs the current information into an AI (artificial intelligence)-based control network that is learned in advance and constructed, and controls the power grid, the heat energy grid, the gas energy grid, and the water energy grid to be mutually coupled based on output data of the AI-based control network so that secondary variability is minimized in each module constituting the conversion module. How the power system works.

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