Method and device for monitoring a zero-carbon chemical energy storage system and storage medium

Abstract

The application provides a monitoring method and device of a zero-carbon chemical energy storage system and a storage medium, which can calculate and analyze the battery power of a reversible high-temperature fuel cell, the total hydrogen generation amount of a hydrogen separator, the optimal storage temperature of a carbon dioxide storage tank, the heating amount of a methanol synthesis reactor for chemical energy storage, and the optimal storage temperature of a methanol aqueous solution storage tank, and return the above-mentioned system operation parameters to a monitoring device, so that an operation and maintenance personnel can understand the operation of the zero-carbon chemical energy storage system in time through the monitoring device, and make adaptive adjustment to the zero-carbon chemical energy storage system according to the system operation.

Description

Technical Field

[0001] This application relates to the field of chemical energy storage technology, and in particular to a monitoring method, device, storage medium and computer equipment for a zero-carbon chemical energy storage system. Background Technology

[0002] Zero-carbon emission energy storage systems have become an important development direction. Pumped hydro storage, as a technology capable of large-scale, long-term energy storage, suffers from drawbacks such as numerous geographical limitations and high construction costs. Considering that power-to-gas (P2G) technology has advantages such as high energy conversion efficiency, unrestricted geographical location, and near-zero pollution, and that the energy storage process can be achieved through continuous energy conversion rather than intermittent direct storage of electrical energy, P2G is one of the most promising technologies for achieving large-scale renewable energy consumption.

[0003] Currently, several chemical energy storage systems based on P2G technology have been proposed, which utilize reversible high-temperature fuel cells. These reversible high-temperature fuel cells have a bidirectional switching function between electrolysis and power generation. When operating in power generation mode, the reversible high-temperature fuel cell can convert the chemical energy of the fuel into electrical energy. When operating in electrolysis mode, the reversible high-temperature fuel cell can convert electrical energy into the chemical energy of the fuel and store it. Since the operation of chemical energy storage systems affects energy utilization efficiency and grid stability, it is necessary to provide a monitoring method for these systems, enabling maintenance personnel to understand the system's operating parameters in a timely manner. Summary of the Invention

[0004] The purpose of this application is to at least address one of the aforementioned technical deficiencies, particularly the technical deficiency in the prior art of being unable to obtain timely information on the operating parameters of chemical energy storage systems.

[0005] In a first aspect, this application provides a monitoring method for a zero-carbon chemical energy storage system, the method comprising:

[0006] The battery parameters of a reversible high-temperature fuel cell in a zero-carbon chemical energy storage system are obtained, and the battery capacity of the reversible high-temperature fuel cell is calculated based on the battery parameters; wherein, the zero-carbon chemical energy storage system further includes a hydrogen separator, a carbon dioxide storage tank, a methanol synthesis reactor, and a methanol-water solution storage tank;

[0007] The hydrogen separation time, separator operating temperature, and separator operating frequency of the hydrogen separator are obtained.

[0008] The total amount of hydrogen generated by the hydrogen separator is calculated based on the hydrogen separation time, and the first optimal storage temperature of the carbon dioxide storage tank is calculated based on the separator operating temperature and the separator operating frequency.

[0009] When the reversible high-temperature fuel cell is in electrolysis mode, the output hydrogen temperature and output hydrogen volume of the reversible high-temperature fuel cell are obtained, and the calorific value of the methanol synthesis reactor is calculated based on the output hydrogen temperature, the output hydrogen volume and the first optimal storage temperature.

[0010] The reactor operating temperature and reactor operating frequency of the methanol synthesis reactor are obtained, and the second optimal storage temperature of the methanol aqueous solution storage tank is calculated based on the reactor operating temperature and reactor operating frequency.

[0011] The battery charge, total hydrogen production, first optimal storage temperature, heat output, and second optimal storage temperature are sent to the monitoring equipment.

[0012] In one embodiment, the battery capacity includes the generated power, and the battery parameters include the power generation fuel consumption rate, the amount of fuel consumed for power generation, the power generation conversion efficiency, the maximum power generation, and the minimum power generation.

[0013] The calculation of the battery capacity of the reversible high-temperature fuel cell based on the battery parameters includes:

[0014] The generated electricity is calculated according to the following expression:

[0015]

[0016] In the formula, S1 is the amount of electricity generated, μ1 is the fuel consumption rate for electricity generation, P1 is the amount of fuel consumed for electricity generation, σ1 is the conversion efficiency of electricity generation, E1 is the maximum amount of electricity generated, and E′1 is the minimum amount of electricity generated.

[0017] In one embodiment, the battery capacity also includes the electrolytic capacity, and the battery parameters also include the electrolytic power consumption rate, the electrolytic absorbed capacity, the electrolytic power conversion efficiency, the maximum electrolytic capacity, and the minimum electrolytic capacity.

[0018] The calculation of the battery capacity of the reversible high-temperature fuel cell based on the battery parameters further includes:

[0019] The electrolysis charge is calculated according to the following expression:

[0020]

[0021] In the formula, S2 is the electrolysis charge, μ2 is the electrolysis power consumption rate, P2 is the electrolysis absorbed charge, σ2 is the electrolysis charge conversion efficiency, E2 is the maximum electrolysis charge, E′2 is the minimum electrolysis charge, and u2 is the electrolysis mode start / stop variable. When the reversible high-temperature fuel cell is in electrolysis mode, u2 takes the value of 1, and when the reversible high-temperature fuel cell is not in electrolysis mode, u2 takes the value of 0.

[0022] In one embodiment, calculating the total amount of hydrogen generated by the hydrogen separator based on the hydrogen separation time includes:

[0023] The total amount of hydrogen produced is calculated according to the following expression:

[0024] S = -kt 2 +c

[0025] In the formula, S is the total amount of hydrogen generated, k is the hydrogen generation rate of the hydrogen separator, t is the hydrogen separation time, and c is a constant.

[0026] In one embodiment, calculating the first optimal storage temperature of the carbon dioxide storage tank based on the separator's operating temperature and the separator's operating frequency includes:

[0027] The first optimal storage temperature is calculated according to the following expression:

[0028]

[0029] In the formula, T is the first optimal storage temperature, f is the operating frequency of the separator, K is the proportional adjustment coefficient, ΔT is the operating temperature of the separator, T′ is the minimum storage temperature of the carbon dioxide storage tank, and K0 is the differential adjustment coefficient.

[0030] In one embodiment, calculating the calorific value of the methanol synthesis reactor based on the output hydrogen temperature, the output hydrogen volume, and the first optimal storage temperature includes:

[0031] The heat output is calculated according to the following expression:

[0032] Q = 1.5(T + T) s V0+1.5(T1+T)V l

[0033] In the formula, Q represents the heat output, T is the first optimal storage temperature, and T s V0 is the real-time temperature of the methanol synthesis reactor, T1 is the volume of carbon dioxide used in the synthesis of methanol aqueous solution, and V1 is the output hydrogen temperature and output hydrogen volume.

[0034] In one embodiment, calculating the second optimal storage temperature of the methanol-water solution storage tank based on the reactor operating temperature and the reactor operating frequency includes:

[0035] The second optimal storage temperature is calculated using the following expression:

[0036]

[0037] In the formula, T e The second optimal storage temperature is given by f′, the operating frequency of the reactor is given by K, the proportional adjustment coefficient is given by ΔT′, the operating temperature of the reactor is given by T2, the minimum storage temperature of the methanol-water solution storage tank is given by T0, and the derivative adjustment coefficient is given by K0.

[0038] Secondly, embodiments of this application provide a monitoring device for a zero-carbon chemical energy storage system, the device comprising:

[0039] A battery power calculation module is used to obtain the battery parameters of the reversible high-temperature fuel cell in the zero-carbon chemical energy storage system, and calculate the battery power of the reversible high-temperature fuel cell based on the battery parameters; wherein, the zero-carbon chemical energy storage system further includes a hydrogen separator, a carbon dioxide storage tank, a methanol synthesis reactor, and a methanol-water solution storage tank;

[0040] The separator data acquisition module is used to acquire the hydrogen separation time, separator operating temperature and separator operating frequency of the hydrogen separator.

[0041] The first optimal storage temperature calculation module is used to calculate the total amount of hydrogen generated by the hydrogen separator based on the hydrogen separation time, and to calculate the first optimal storage temperature of the carbon dioxide storage tank based on the separator operating temperature and the separator operating frequency.

[0042] The calorific value calculation module is used to obtain the output hydrogen temperature and output hydrogen volume of the reversible high-temperature fuel cell when the reversible high-temperature fuel cell is in electrolysis mode, and to calculate the calorific value of the methanol synthesis reactor based on the output hydrogen temperature, the output hydrogen volume and the first optimal storage temperature.

[0043] The second optimal storage temperature calculation module is used to obtain the reactor operating temperature and reactor operating frequency of the methanol synthesis reactor, and calculate the second optimal storage temperature of the methanol aqueous solution storage tank based on the reactor operating temperature and reactor operating frequency.

[0044] The transmitting module is used to transmit the battery power, the total amount of hydrogen generated, the first optimal storage temperature, the heat output, and the second optimal storage temperature to the monitoring device.

[0045] Thirdly, embodiments of this application provide a storage medium storing computer-readable instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps of the monitoring method for the zero-carbon chemical energy storage system described in any of the above embodiments.

[0046] Fourthly, embodiments of this application provide a computer device, which includes: one or more processors, and a memory;

[0047] The memory stores computer-readable instructions, which, when executed by the one or more processors, perform the steps of the monitoring method for the zero-carbon chemical energy storage system described in any of the above embodiments.

[0048] In the monitoring method, apparatus, storage medium, and computer equipment of the zero-carbon chemical energy storage system provided in some embodiments of this application, the battery capacity of the reversible high-temperature fuel cell, the total amount of hydrogen generated by the hydrogen separator, the optimal storage temperature of the carbon dioxide storage tank, the heat generation of the methanol synthesis reactor for chemical energy storage, and the optimal storage temperature of the methanol aqueous solution storage tank in the zero-carbon chemical energy storage system can be calculated and analyzed. The aforementioned system operating parameters are returned to the monitoring equipment so that operation and maintenance personnel can understand the operation status of the zero-carbon chemical energy storage system in a timely manner through the monitoring equipment and make adaptive adjustments to the zero-carbon chemical energy storage system based on the system operation status. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is one of the system structure diagrams of a zero-carbon chemical energy storage system in one embodiment;

[0051] Figure 2 This is the second system structure diagram of a zero-carbon chemical energy storage system in one embodiment;

[0052] Figure 3 This is the third system structure diagram of a zero-carbon chemical energy storage system in one embodiment;

[0053] Figure 4 This is a flowchart illustrating a monitoring method for a zero-carbon chemical energy storage system in one embodiment;

[0054] Figure 5 This is a schematic diagram of the monitoring device for a zero-carbon chemical energy storage system in one embodiment;

[0055] Figure 6 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0057] In one embodiment, the monitoring method for a zero-carbon chemical energy storage system provided in this application can be used to monitor the system operating parameters of the zero-carbon chemical energy storage system. For example... Figure 1 As shown, a zero-carbon chemical energy storage system may include a reversible high-temperature fuel cell, a methanol steam reformer, a hydrogen separator, a carbon dioxide storage tank, a methanol synthesis reactor, and a methanol-water solution storage tank.

[0058] The reversible high-temperature fuel cell (RTC) includes a carbon dioxide storage tank for storing carbon dioxide and a methanol-water solution storage tank for storing methanol-water solutions. The RTC operates in two modes: a power generation mode and an electrolysis mode. In electrolysis mode, the RTC draws power from the grid and uses this electricity to electrolyze the aqueous solution to produce hydrogen gas, thus converting electrical energy into chemical energy for storage. The methanol synthesis reactor, used in electrolysis mode, combines the hydrogen generated by the RTC with the carbon dioxide stored in the carbon dioxide storage tank to synthesize methanol-water solutions. The methanol-water solution storage tank stores the methanol-water solution produced by the methanol synthesis reactor.

[0059] A methanol steam reformer is a device that converts methanol into syngas based on methanol liquid-phase reforming technology. It can be used to produce syngas, synthetic oils, and synthetic methanol, among other chemicals. Methanol liquid-phase reforming technology is a highly efficient and environmentally friendly technology with broad application prospects. The methanol steam reformer can preheat methanol-water solutions to 50-170℃ under a predetermined pressure of 3MPa-8MPa.

[0060] Specifically, the methanol steam reformer is used to reform the methanol-water solution stored in the methanol-water solution storage tank into gases such as carbon dioxide and hydrogen when the reversible high-temperature fuel cell is in power generation mode. The hydrogen separator is used to separate carbon dioxide and hydrogen, delivering the hydrogen to the reversible high-temperature fuel cell and the carbon dioxide to the carbon dioxide storage tank. In power generation mode, the reversible high-temperature fuel cell can receive hydrogen from the hydrogen separator and convert the chemical energy of the hydrogen into electrical energy to power the grid.

[0061] The zero-carbon chemical energy storage system provided in this embodiment uses a reversible high-temperature fuel cell for energy storage, avoiding the need for separate electrolyzers and fuel cell equipment, thus saving on equipment investment and site costs, and achieving higher efficiency. Simultaneously, this zero-carbon chemical energy storage system uses a high-flash-point liquid alcohol-water solution as the energy storage medium, storing water, carbon dioxide, and the alcohol-water solution. This allows hydrogen to be converted into a more mature and safer chemical hydrogen carrier, without involving high-pressure hydrogen, ensuring safety, good sealing, and good adaptability to various scenarios. The entire system achieves carbon dioxide recycling, with zero net carbon dioxide emissions.

[0062] Besides liquid alcohol-water mixtures, zero-carbon chemical energy storage systems can also use natural gas or ammonia fuel as the energy storage medium. In one embodiment, when natural gas is used as the energy storage medium, the system structure of the zero-carbon chemical energy storage system can be as follows: Figure 2 As shown, natural gas can be piped natural gas or biogas. Piped natural gas does not require an external gas supply device. Biogas purification and separation produces carbon dioxide and methane, and methane reforming also produces carbon dioxide. Collecting and utilizing the carbon dioxide from both can achieve the recycling of carbon resources. Figure 2 As shown, the specific operating modes and processes of the reversible high-temperature fuel cell can be found in other embodiments, and will not be repeated here. The natural gas reformer is used to reform natural gas to generate natural gas reforming products. The hydrogen separator is used to separate the natural gas reforming products and deliver hydrogen to the reversible high-temperature fuel cell, while delivering carbon dioxide to a carbon dioxide storage tank. The carbon dioxide storage tank is used to store carbon dioxide. The natural gas synthesis reactor is used to synthesize the hydrogen generated by the reversible high-temperature fuel cell and the carbon dioxide stored in the carbon dioxide storage tank when the reversible high-temperature fuel cell is in electrolysis mode, generating natural gas or biogas for supply to user terminals.

[0063] In one embodiment, when ammonia fuel gas is used as the energy storage medium, the system structure of the zero-carbon chemical energy storage system can be as follows: Figure 3 As shown, the specific operating mode and process of the reversible high-temperature fuel cell can be found in other embodiments, and will not be repeated here. The ammonia cracker is used to crack ammonia to obtain cracking products. The hydrogen separator is used to separate the cracking products of ammonia, generating hydrogen and nitrogen. The hydrogen is delivered to the reversible high-temperature fuel cell, and the nitrogen is delivered to the nitrogen storage tank. The nitrogen storage tank is used to store nitrogen. The ammonia synthesis reactor is used to synthesize ammonia from hydrogen and nitrogen. The ammonia storage tank is used to store ammonia.

[0064] In some embodiments, this application provides a monitoring method for a zero-carbon chemical energy storage system, used to monitor the system operating parameters of any of the zero-carbon chemical energy storage systems described above. For example... Figure 4 As shown, the monitoring method of this application may include the following steps:

[0065] S402: Obtain the battery parameters of the reversible high-temperature fuel cell in the zero-carbon chemical energy storage system, and calculate the battery capacity of the reversible high-temperature fuel cell based on the battery parameters; wherein, the zero-carbon chemical energy storage system further includes a hydrogen separator, a carbon dioxide storage tank, a methanol synthesis reactor, and a methanol-water solution storage tank.

[0066] In this step, the battery parameters of the reversible high-temperature fuel cell may include power generation parameters related to the power generation process of the reversible high-temperature fuel cell, and / or electrolysis parameters related to the electrolysis process of the reversible high-temperature fuel cell. The battery capacity of the reversible high-temperature fuel cell can be used to reflect the amount of electricity consumed by the reversible high-temperature fuel cell in electrolysis mode, and / or the amount of electricity generated in power generation mode.

[0067] Specifically, this application can obtain the battery parameters of a reversible high-temperature fuel cell and calculate the battery capacity based on these parameters to monitor the battery parameters of the reversible high-temperature fuel cell. In one embodiment, the battery capacity includes the generated power, and the battery parameters include the power generation fuel consumption rate, the amount of fuel consumed during power generation, the power generation conversion efficiency, the maximum generated power, and the minimum generated power. Here, the generated power refers to the electricity produced by the reversible high-temperature fuel cell in power generation mode; the power generation fuel consumption rate refers to the fuel consumption rate of the reversible high-temperature fuel cell in power generation mode; the amount of fuel consumed during power generation refers to the amount of fuel consumed by the reversible high-temperature fuel cell in power generation mode; the power generation conversion efficiency refers to the conversion efficiency of the reversible high-temperature fuel cell in providing electrical energy in power generation mode; the maximum generated power refers to the maximum amount of electricity provided by the reversible high-temperature fuel cell in power generation mode; and the minimum generated power refers to the minimum amount of electricity provided by the reversible high-temperature fuel cell in power generation mode. In this step, the generated power can be calculated according to the following expression:

[0068]

[0069] In the formula, S1 is the amount of electricity generated, μ1 is the fuel consumption rate for electricity generation, P1 is the amount of fuel consumed for electricity generation, σ1 is the conversion efficiency of electricity generation, E1 is the maximum amount of electricity generated, and E′1 is the minimum amount of electricity generated.

[0070] Furthermore, in one embodiment, the battery capacity may further include electrolytic capacity, and the battery parameters may further include electrolytic power consumption rate, electrolytic absorbed capacity, electrolytic power conversion efficiency, maximum electrolytic capacity, and minimum electrolytic capacity. Here, electrolytic capacity refers to the amount of electricity consumed by the reversible high-temperature fuel cell in electrolysis mode; electrolytic power consumption rate refers to the power consumption rate of the reversible high-temperature fuel cell in electrolysis mode; electrolytic absorbed capacity refers to the amount of electricity absorbed by the reversible high-temperature fuel cell in electrolysis mode; electrolytic power conversion efficiency refers to the conversion efficiency of the absorbed capacity of the reversible high-temperature fuel cell in electrolysis mode; maximum electrolytic capacity refers to the maximum capacity of the reversible high-temperature fuel cell in electrolysis mode; and minimum electrolytic capacity refers to the minimum capacity of the reversible high-temperature fuel cell in electrolysis mode. In this step, the electrolytic capacity can also be calculated according to the following expression:

[0071]

[0072] In the formula, S2 is the electrolysis charge, μ2 is the electrolysis power consumption rate, P2 is the electrolysis absorbed charge, σ2 is the electrolysis charge conversion efficiency, E2 is the maximum electrolysis charge, E′2 is the minimum electrolysis charge, and u2 is the electrolysis mode start / stop variable. When the reversible high-temperature fuel cell is in electrolysis mode, u2 takes the value of 1, and when the reversible high-temperature fuel cell is not in electrolysis mode, u2 takes the value of 0.

[0073] This application uses the above expressions to pre-estimate the power output of reversible high-temperature fuel cells in power generation mode and electrolysis mode, respectively, so as to facilitate the monitoring of power output in both modes.

[0074] S404: Obtain the hydrogen separation time, separator operating temperature and separator operating frequency of the hydrogen separator.

[0075] The hydrogen separator is used to separate carbon dioxide and hydrogen. The hydrogen separation time can be the time consumed by the hydrogen separator to separate carbon dioxide and hydrogen and output hydrogen. The separator operating temperature can be the real-time operating temperature of the hydrogen separator, and the separator operating frequency can be the real-time operating frequency of the hydrogen separator. In one embodiment, this step can obtain the hydrogen separation time, separator operating temperature, and separator operating frequency through detection sensors installed inside and / or outside the hydrogen separator.

[0076] S406: Calculate the total amount of hydrogen generated by the hydrogen separator based on the hydrogen separation time, and calculate the first optimal storage temperature of the carbon dioxide storage tank based on the separator operating temperature and the separator operating frequency.

[0077] The total amount of hydrogen generated can be the total amount of hydrogen output by the hydrogen separator during this separation process, and the first optimal storage temperature refers to the optimal temperature for storing carbon dioxide in the carbon dioxide storage tank.

[0078] Specifically, this application can calculate the total amount of hydrogen generated based on the hydrogen separation time to monitor the operating parameters of the hydrogen separator. In one embodiment, this application can calculate the total amount of hydrogen generated according to the following expression:

[0079] S = -kt 2 +c

[0080] In the formula, S is the total amount of hydrogen generated, k is the hydrogen generation rate of the hydrogen separator, t is the hydrogen separation time, and c is a constant, the specific value of which can be determined according to actual conditions or empirical values.

[0081] This application can also calculate a first optimal storage temperature based on the separator's operating temperature and frequency, so that maintenance personnel can determine whether the current storage temperature of the carbon dioxide storage tank is appropriate and intervene in a timely manner to adjust the current storage temperature of the carbon dioxide storage tank to avoid affecting the storage effect. In one embodiment, this application can calculate the first optimal storage temperature according to the following expression:

[0082]

[0083] In the formula, T is the first optimal storage temperature, f is the operating frequency of the separator, K is the proportional adjustment coefficient, ΔT is the operating temperature of the separator, T′ is the minimum storage temperature of the carbon dioxide storage tank, and K0 is the differential adjustment coefficient.

[0084] Furthermore, in one embodiment, the present application can determine a carbon dioxide storage temperature threshold based on a first optimal storage temperature. An adsorbent may be provided in the carbon dioxide storage tank. When the current storage temperature of the carbon dioxide is higher than the carbon dioxide storage temperature threshold, the adsorbent can be used to absorb the carbon dioxide in the storage tank to prevent the temperature of the carbon dioxide storage tank from becoming too high and affecting the storage effect. In one example, the adsorbent may be sodium-doped lithium titanate.

[0085] S408: When the reversible high-temperature fuel cell is in electrolysis mode, obtain the output hydrogen temperature and output hydrogen volume of the reversible high-temperature fuel cell, and calculate the calorific value of the methanol synthesis reactor based on the output hydrogen temperature, the output hydrogen volume and the first optimal storage temperature.

[0086] Specifically, when the reversible high-temperature fuel cell is in electrolysis mode, it electrolyzes an aqueous solution to produce hydrogen and outputs hydrogen gas. The methanol synthesis reactor can synthesize a methanol-water solution from the hydrogen generated by the reversible high-temperature fuel cell and the carbon dioxide stored in the carbon dioxide storage tank for chemical energy storage. Heat is generated during the generation of the methanol-water solution. This application can calculate the calorific value based on the output hydrogen temperature, output hydrogen volume, and a first optimal storage temperature to monitor the operating parameters of the methanol synthesis reactor. In one embodiment, this application can calculate the calorific value according to the following expression:

[0087] Q = 1.5(T + T) s V0+1.5(T1+T)V1

[0088] In the formula, Q represents the heat output, T is the first optimal storage temperature, and T s V0 is the real-time temperature of the methanol synthesis reactor, T1 is the volume of carbon dioxide used in the synthesis of methanol aqueous solution, and V1 is the output hydrogen temperature and output hydrogen volume.

[0089] S410: Obtain the reactor operating temperature and reactor operating frequency of the methanol synthesis reactor, and calculate the second optimal storage temperature of the methanol aqueous solution storage tank based on the reactor operating temperature and reactor operating frequency.

[0090] The second optimal storage temperature refers to the optimal temperature for storing methanol-water solution in the methanol-water solution storage tank. This application can calculate the second optimal storage temperature based on the reactor operating temperature and reactor operating frequency, allowing maintenance personnel to determine whether the current storage temperature of the methanol-water solution storage tank is appropriate and to intervene and adjust the current storage temperature in a timely manner to avoid affecting the storage effect. In one embodiment, this application can calculate the second optimal storage temperature according to the following expression:

[0091]

[0092] In the formula, T e The second optimal storage temperature is given by f′, the operating frequency of the reactor is given by K, the proportional adjustment coefficient is given by ΔT′, the operating temperature of the reactor is given by T2, the minimum storage temperature of the methanol-water solution storage tank is given by T0, and the derivative adjustment coefficient is given by K0.

[0093] S412: Send the battery charge, the total amount of hydrogen generated, the first optimal storage temperature, the heat output, and the second optimal storage temperature to the monitoring device.

[0094] In this step, after calculating each operating parameter, the operating parameters can be sent to the monitoring equipment used by the operation and maintenance personnel. This allows the operation and maintenance personnel to understand the operation status of the zero-carbon chemical energy storage system in a timely manner through the monitoring equipment and make adaptive adjustments to the zero-carbon chemical energy storage system based on the system's operating status.

[0095] In the monitoring method for a zero-carbon chemical energy storage system provided in some embodiments of this application, the battery capacity of the reversible high-temperature fuel cell, the total amount of hydrogen generated by the hydrogen separator, the optimal storage temperature of the carbon dioxide storage tank, the heat generation of the methanol synthesis reactor for chemical energy storage, and the optimal storage temperature of the methanol aqueous solution storage tank in the zero-carbon chemical energy storage system can be calculated and analyzed. The aforementioned system operating parameters are then returned to the monitoring equipment so that operation and maintenance personnel can understand the operating status of the zero-carbon chemical energy storage system in a timely manner through the monitoring equipment and make adaptive adjustments to the zero-carbon chemical energy storage system based on the system operating status.

[0096] The monitoring device for the zero-carbon chemical energy storage system provided in the embodiments of this application is described below. The monitoring device for the zero-carbon chemical energy storage system described below can be referred to in correspondence with the monitoring method for the zero-carbon chemical energy storage system described above.

[0097] In one embodiment, this application provides a monitoring device 500 for a zero-carbon chemical energy storage system. For example... Figure 5 As shown, the device 500 specifically includes:

[0098] The battery power calculation module 510 is used to acquire the battery parameters of the reversible high-temperature fuel cell in the zero-carbon chemical energy storage system, and calculate the battery power of the reversible high-temperature fuel cell based on the battery parameters; wherein, the zero-carbon chemical energy storage system further includes a hydrogen separator, a carbon dioxide storage tank, a methanol synthesis reactor, and a methanol-water solution storage tank.

[0099] The separator data acquisition module 520 is used to acquire the hydrogen separation time, separator operating temperature and separator operating frequency of the hydrogen separator.

[0100] The first optimal storage temperature calculation module 530 is used to calculate the total amount of hydrogen generated by the hydrogen separator based on the hydrogen separation time, and to calculate the first optimal storage temperature of the carbon dioxide storage tank based on the separator operating temperature and the separator operating frequency.

[0101] The calorific value calculation module 540 is used to obtain the output hydrogen temperature and output hydrogen volume of the reversible high-temperature fuel cell when the reversible high-temperature fuel cell is in electrolysis mode, and to calculate the calorific value of the methanol synthesis reactor based on the output hydrogen temperature, the output hydrogen volume and the first optimal storage temperature.

[0102] The second optimal storage temperature calculation module 550 is used to obtain the reactor operating temperature and reactor operating frequency of the methanol synthesis reactor, and calculate the second optimal storage temperature of the methanol aqueous solution storage tank based on the reactor operating temperature and reactor operating frequency.

[0103] The transmitting module 560 is used to transmit the battery power, the total amount of hydrogen generated, the first optimal storage temperature, the heat output, and the second optimal storage temperature to the monitoring device.

[0104] In one embodiment, the battery capacity includes generated power, and the battery parameters include power generation fuel consumption rate, power generation fuel consumption, power generation conversion efficiency, maximum power generation, and minimum power generation. The battery capacity calculation module 510 of this application includes a power generation calculation unit. This power generation calculation unit is used to calculate the generated power according to the following expression:

[0105]

[0106] In the formula, S1 is the amount of electricity generated, μ1 is the fuel consumption rate for electricity generation, P1 is the amount of fuel consumed for electricity generation, σ1 is the conversion efficiency of electricity generation, E1 is the maximum amount of electricity generated, and E′1 is the minimum amount of electricity generated.

[0107] In one embodiment, the battery capacity further includes electrolytic capacity, and the battery parameters further include electrolytic power consumption rate, electrolytic absorbed capacity, electrolytic power conversion efficiency, maximum electrolytic capacity, and minimum electrolytic capacity. The battery capacity calculation module 510 of this application further includes an electrolytic capacity calculation unit. This electrolytic capacity calculation unit is used to calculate the electrolytic capacity according to the following expression:

[0108]

[0109] In the formula, S2 is the electrolysis charge, μ2 is the electrolysis power consumption rate, P2 is the electrolysis absorbed charge, σ2 is the electrolysis charge conversion efficiency, E2 is the maximum electrolysis charge, E′2 is the minimum electrolysis charge, and u2 is the electrolysis mode start / stop variable. When the reversible high-temperature fuel cell is in electrolysis mode, u2 takes the value of 1, and when the reversible high-temperature fuel cell is not in electrolysis mode, u2 takes the value of 0.

[0110] In one embodiment, the first optimal storage temperature calculation module 530 of this application includes a total hydrogen generation calculation unit. This total hydrogen generation calculation unit is used to calculate the total hydrogen generation according to the following expression:

[0111] S = -kt 2 +c

[0112] In the formula, S is the total amount of hydrogen generated, k is the hydrogen generation rate of the hydrogen separator, t is the hydrogen separation time, and c is a constant.

[0113] In one embodiment, the first optimal storage temperature calculation module 530 of this application includes a first temperature calculation unit. The first temperature calculation unit is used to calculate the first optimal storage temperature according to the following expression:

[0114]

[0115] In the formula, T is the first optimal storage temperature, f is the operating frequency of the separator, K is the proportional adjustment coefficient, ΔT is the operating temperature of the separator, T′ is the minimum storage temperature of the carbon dioxide storage tank, and K0 is the differential adjustment coefficient.

[0116] In one embodiment, the heating capacity calculation module 540 of this application includes a heating capacity calculation unit. This heating capacity calculation unit is used to calculate the heating capacity according to the following expression:

[0117] Q = 1.5(T + T) s V0+1.5(T1+T)V1

[0118] In the formula, Q represents the heat output, T is the first optimal storage temperature, and T s V0 is the real-time temperature of the methanol synthesis reactor, T1 is the volume of carbon dioxide used in the synthesis of methanol aqueous solution, and V1 is the output hydrogen temperature and output hydrogen volume.

[0119] In one embodiment, the second optimal storage temperature calculation module 550 of this application includes a second temperature calculation unit. The second temperature calculation unit is used to calculate the second optimal storage temperature according to the following expression:

[0120]

[0121] In the formula, T e The second optimal storage temperature is given by f′, the operating frequency of the reactor is given by K, the proportional adjustment coefficient is given by ΔT′, the operating temperature of the reactor is given by T2, the minimum storage temperature of the methanol-water solution storage tank is given by T0, and the derivative adjustment coefficient is given by K0.

[0122] In one embodiment, this application also provides a storage medium storing computer-readable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of the monitoring method for a zero-carbon chemical energy storage system as described in any embodiment.

[0123] In one embodiment, this application also provides a computer device storing computer-readable instructions that, when executed by one or more processors, cause the one or more processors to perform steps of a monitoring method for a zero-carbon chemical energy storage system as described in any embodiment.

[0124] Indicatively, Figure 6 This is a schematic diagram of the internal structure of a computer device provided in an embodiment of this application. In one example, the computer device can be a server. (Refer to...) Figure 6 The computer device 900 includes a processing component 902, which further includes one or more processors, and memory resources represented by memory 901 for storing instructions, such as application programs, that can be executed by the processing component 902. The application programs stored in memory 901 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 902 is configured to execute instructions to perform the steps of the methods described in any of the above embodiments.

[0125] The computer device 900 may also include a power supply component 903 configured to perform power management of the computer device 900, a wired or wireless network interface 904 configured to connect the computer device 900 to a network, and an input / output (I / O) interface 905. The computer device 900 may operate on an operating system stored in memory 901, such as Windows Server™, Mac OS X™, Unix™, Linux™, Free BSD™, or similar.

[0126] Those skilled in the art will understand that the internal structure of the computer device shown in this application is merely a block diagram of a portion of the structure related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0127] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this document, "a," "an," "the," "the," and "its" may also include plural forms unless the context clearly indicates otherwise. "Multiple" refers to at least two, such as 2, 3, 5, or 8, etc. "And / or" includes any and all combinations of the related listed items.

[0128] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0129] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A monitoring method for a zero-carbon chemical energy storage system, characterized in that, The method includes: The battery parameters of a reversible high-temperature fuel cell in a zero-carbon chemical energy storage system are obtained, and the battery capacity of the reversible high-temperature fuel cell is calculated based on the battery parameters; wherein, the zero-carbon chemical energy storage system further includes a hydrogen separator, a carbon dioxide storage tank, a methanol synthesis reactor, and a methanol-water solution storage tank; the battery capacity includes the generated electricity, and the battery parameters include the power generation fuel consumption rate, the amount of fuel consumed for power generation, the power generation conversion efficiency, the maximum power generation, and the minimum power generation; The hydrogen separation time, separator operating temperature, and separator operating frequency of the hydrogen separator are obtained. The total amount of hydrogen generated by the hydrogen separator is calculated based on the hydrogen separation time, and the first optimal storage temperature of the carbon dioxide storage tank is calculated based on the separator operating temperature and the separator operating frequency. When the reversible high-temperature fuel cell is in electrolysis mode, the output hydrogen temperature and output hydrogen volume of the reversible high-temperature fuel cell are obtained, and the calorific value of the methanol synthesis reactor is calculated based on the output hydrogen temperature, the output hydrogen volume and the first optimal storage temperature. The reactor operating temperature and reactor operating frequency of the methanol synthesis reactor are obtained, and the second optimal storage temperature of the methanol aqueous solution storage tank is calculated based on the reactor operating temperature and reactor operating frequency. Send the battery charge, total hydrogen production, first optimal storage temperature, heat output, and second optimal storage temperature to the monitoring equipment; The battery capacity includes electrolysis capacity, and the battery parameters include electrolysis power consumption rate, electrolysis absorbed capacity, electrolysis power conversion efficiency, maximum electrolysis capacity, and minimum electrolysis capacity; the calculation of the calorific value of the methanol synthesis reactor based on the output hydrogen temperature, the output hydrogen volume, and the first optimal storage temperature includes: The heat output is calculated according to the following expression: In the formula, For the heat output, The first optimal storage temperature is... The real-time temperature of the methanol synthesis reactor is [temperature value missing]. This represents the volume of carbon dioxide used in the synthesis of an aqueous methanol solution. The output hydrogen temperature, The output hydrogen volume is [value].

2. A monitoring device for a zero-carbon chemical energy storage system, characterized by, The monitoring device, applied to the monitoring method for a zero-carbon chemical energy storage system as described in claim 1, comprises: A battery power calculation module is used to obtain the battery parameters of the reversible high-temperature fuel cell in the zero-carbon chemical energy storage system, and calculate the battery power of the reversible high-temperature fuel cell based on the battery parameters; wherein, the zero-carbon chemical energy storage system further includes a hydrogen separator, a carbon dioxide storage tank, a methanol synthesis reactor, and a methanol-water solution storage tank; The separator data acquisition module is used to acquire the hydrogen separation time, separator operating temperature and separator operating frequency of the hydrogen separator. The first optimal storage temperature calculation module is used to calculate the total amount of hydrogen generated by the hydrogen separator based on the hydrogen separation time, and to calculate the first optimal storage temperature of the carbon dioxide storage tank based on the separator operating temperature and the separator operating frequency. The calorific value calculation module is used to obtain the output hydrogen temperature and output hydrogen volume of the reversible high-temperature fuel cell when the reversible high-temperature fuel cell is in electrolysis mode, and to calculate the calorific value of the methanol synthesis reactor based on the output hydrogen temperature, the output hydrogen volume and the first optimal storage temperature. The second optimal storage temperature calculation module is used to obtain the reactor operating temperature and reactor operating frequency of the methanol synthesis reactor, and calculate the second optimal storage temperature of the methanol aqueous solution storage tank based on the reactor operating temperature and reactor operating frequency. The transmitting module is used to transmit the battery power, the total amount of hydrogen generated, the first optimal storage temperature, the heat output, and the second optimal storage temperature to the monitoring device.

3. A storage medium, characterized by The storage medium stores computer-readable instructions, which, when executed by one or more processors, cause the one or more processors to perform the steps of the monitoring method for the zero-carbon chemical energy storage system as described in claim 1.

4. A computer device, comprising: include: One or more processors, and memory; The memory stores computer-readable instructions, which, when executed by the one or more processors, perform the steps of the monitoring method for the zero-carbon chemical energy storage system as described in claim 1.

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