Molten salt heat storage method and device, electronic equipment and storage medium

Abstract

The invention discloses a fused salt heat storage method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the current operation state of a thermal power generating unit and the available heat energy capacity of a fused salt heat storage system in response to a power grid load fluctuation signal; based on the running state and the available heat energy capacity, whether adjustment needs to be conducted or not is judged; and when it is determined that adjustment is needed, adjustment is executed based on the control module. According to the application, when the power grid load fluctuation signal is responded, the current operation state of the thermal power generating unit and the available heat energy capacity of the fused salt heat storage system are comprehensively considered to judge whether adjustment is needed or not, and the adjustment is executed based on the control module when the adjustment is needed; the problems that in an existing fused salt heat storage method, due to the fact that a nitrate mixture with a high melting point and low heat storage density is adopted as a heat storage medium, the heat stability is poor and the leakage risk is high under the high-temperature working condition can be solved, and the technical effect of improving the peak regulation and frequency modulation reliability and popularization feasibility of a thermal power generating unit is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of thermal energy storage technology, and in particular to a molten salt heat storage method, device, electronic equipment, and storage medium. Background Art

[0002] As the energy structure develops towards low-carbon and intelligent directions, the role of thermal power units in peak and frequency regulation of the power grid is becoming increasingly prominent.

[0003] In the existing molten salt heat storage method, a nitrate mixture with a high melting point and low heat storage density is directly used as the heat storage medium. Under high-temperature conditions, there are problems such as poor thermal stability and high leakage risk, which affects the reliability and promotion feasibility of peak and frequency regulation of thermal power units. Summary of the Invention

[0004] This disclosure provides a molten salt heat storage method, device, electronic device, and storage medium. Its primary purpose is to address issues such as poor thermal stability and high leakage risk under high-temperature conditions, which affect the reliability and feasibility of peak and frequency regulation of thermal power units.

[0005] According to a first aspect of the present disclosure, a molten salt heat storage method is provided, comprising:

[0006] Responding to power grid load fluctuation signals, obtaining the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt thermal storage system;

[0007] determining whether adjustment is required based on the operating status and available thermal energy capacity;

[0008] When it is determined that an adjustment is needed, the adjustment is performed based on the control module.

[0009] Optionally, the determining whether adjustment is required based on the operating state and available thermal energy capacity includes:

[0010] determining whether peak shaving operations are required based on the operating status and available thermal energy capacity;

[0011] Based on the operating status and available thermal energy capacity, it is determined whether frequency modulation operation is required.

[0012] Optionally, after determining whether adjustment is required based on the operating status and available thermal energy capacity, the method further includes:

[0013] When it is determined that peak shaving operation is required, the heat extraction rate of the molten salt heat storage module is adjusted through the control module, and the heat energy is released to the steam system of the thermal power unit through the molten salt-steam heat exchange submodule or the molten salt-water / steam heat exchange submodule to adjust the output power of the unit.

[0014] Optionally, after determining whether adjustment is required based on the operating status and available thermal energy capacity, the method further includes:

[0015] When it is determined that frequency modulation operation is required, the control module dynamically optimizes the switching strategy of the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule according to the real-time load change frequency, thereby achieving rapid response of thermal energy and power regulation.

[0016] Optionally, after performing the adjustment based on the control module, the method further includes:

[0017] The performance monitoring module collects system operating parameters and feeds the parameters back to the control module to adjust subsequent heat extraction and release control strategies based on the parameters.

[0018] According to a second aspect of the present disclosure, there is provided a molten salt heat storage device, comprising:

[0019] an acquisition unit, configured to obtain the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt heat storage system in response to a power grid load fluctuation signal;

[0020] a judgment unit, configured to judge whether adjustment is required based on the operating state and the available thermal energy capacity;

[0021] The adjustment unit is configured to perform adjustment based on the control module when it is determined that adjustment is required.

[0022] Optionally, the adjustment unit is further configured to:

[0023] determining whether peak shaving operations are required based on the operating status and available thermal energy capacity;

[0024] Based on the operating status and available thermal energy capacity, it is determined whether frequency modulation operation is required.

[0025] Optionally, the device further includes:

[0026] The regulating unit is configured to, after the regulating unit determines whether adjustment is required based on the operating status and the available thermal energy capacity, adjust the heat extraction rate of the molten salt heat storage module through the control module when it is determined that peak shaving operation is required, and release heat energy to the steam system of the thermal power unit through the molten salt-steam heat exchange submodule or the molten salt-water / steam heat exchange submodule to regulate the output power of the unit.

[0027] Optionally, the device further includes:

[0028] The regulating unit is further configured to, after the regulating unit determines whether adjustment is required based on the operating status and available thermal energy capacity, dynamically optimize the switching strategy between the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule according to the real-time load change frequency through the control module when it is determined that frequency modulation operation is required, so as to achieve rapid response and power regulation of thermal energy.

[0029] Optionally, the device further includes:

[0030] The feedback unit is used to collect system operating parameters based on the performance monitoring module after the adjustment unit performs adjustment based on the control module, and feed the parameters back to the control module to adjust the subsequent heat extraction and release control strategy based on the parameters.

[0031] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0032] at least one processor; and

[0033] a memory communicatively connected to the at least one processor; wherein,

[0034] The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect.

[0035] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0036] According to a fifth aspect of the present disclosure, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the method as described in the first aspect above.

[0037] The molten salt heat storage method, device, electronic device and storage medium provided by the present disclosure have the following main technical solutions: in response to the power grid load fluctuation signal, obtaining the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt heat storage system; based on the operating status and available thermal energy capacity, judging whether adjustment is required; when it is determined that adjustment is required, performing the adjustment based on the control module. Through this application, since when responding to the power grid load fluctuation signal, the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt heat storage system are comprehensively considered to judge whether adjustment is required, and the adjustment is performed based on the control module when necessary, it can solve the problem of poor thermal stability and high leakage risk under high temperature conditions caused by the use of a nitrate mixture with a high melting point and low thermal storage density as a heat storage medium in the existing molten salt heat storage method, thereby achieving the technical effect of improving the reliability of peak-shaving and frequency regulation of thermal power units and the feasibility of promotion.

[0038] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are provided to facilitate a better understanding of the present invention and do not constitute a limitation of the present disclosure.

[0040] Figure 1 A schematic diagram of a molten salt heat storage method according to an embodiment of the present disclosure;

[0041] Figure 2 A schematic structural diagram of a molten salt heat storage device provided in an embodiment of the present disclosure;

[0042] Figure 3 A schematic structural diagram of a molten salt heat storage device provided in an embodiment of the present disclosure;

[0043] Figure 4 A schematic block diagram of an exemplary electronic device provided for an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] The following description of exemplary embodiments of the present disclosure is made in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding. These details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0045] The molten salt heat storage method, device, electronic device, and storage medium according to embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0046] Figure 1 A schematic flow chart of a molten salt heat storage method provided in an embodiment of the present disclosure.

[0047] like Figure 1 As shown, the method comprises the following steps:

[0048] Step 101, in response to a power grid load fluctuation signal, obtaining the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt thermal storage system;

[0049] Grid load fluctuation signals are dynamic signals generated by changes in electricity demand during grid operation. For example, during peak periods, load demand increases, while during off-peak periods, load demand decreases. These fluctuations directly impact the frequency and voltage stability of the grid, requiring timely responses from relevant energy systems to balance the load. When the molten salt heat storage system receives this fluctuation signal, it triggers a series of subsequent operations, the first of which is to obtain the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt heat storage system.

[0050] The current operating status of a thermal power unit includes several key parameters, such as the unit's real-time power generation, main steam parameters (pressure and temperature), turbine speed, boiler combustion efficiency, temperature distribution of various heating surfaces, and the operating status of auxiliary equipment such as feedwater pumps. These parameters comprehensively reflect the unit's current operating conditions. For example, real-time power generation can reveal the unit's current output level. Combined with main steam parameters, the unit's thermal cycle efficiency can be determined, indicating whether it is operating within its optimal range and whether it has the potential to adjust to grid load fluctuations.

[0051] The available thermal energy capacity of a molten salt heat storage system refers to the total amount of thermal energy that the system can provide or absorb in its current state. The molten salt heat storage system mainly relies on molten salt as a heat storage medium to store thermal energy. Its available thermal energy capacity is closely related to the type of molten salt, its current temperature, its quality, and the capacity of the system's thermal storage equipment (such as a heat storage tank). For example, if the molten salt composite thermal storage material used has the characteristics of low cost, low melting point, and high heat storage density, it can store more thermal energy in the same storage space, and its available thermal energy capacity is relatively larger. By obtaining this capacity information, it can be determined how much thermal energy the molten salt heat storage system can release to supplement the insufficient output of thermal power units when responding to grid load fluctuations, or how much excess thermal energy it can absorb to avoid energy waste, thereby providing key data support for the subsequent formulation of heat extraction and heat release peak-shaving plans, ensuring that the system can make accurate and effective responses to changes in grid load, and guaranteeing the stable and economical operation of the entire energy system.

[0052] Step 102: Based on the operating status and available thermal capacity, determine whether adjustment is required;

[0053] The current operating status of a thermal power unit encompasses multiple parameters, including the unit's real-time power generation, main steam pressure and temperature, turbine speed, boiler combustion efficiency, and the operating conditions of various auxiliary equipment. These parameters collectively reflect the unit's output capacity, operating efficiency, and whether it is within a safe operating range at the current moment. The available thermal energy capacity of a molten salt thermal storage system refers to the total amount of thermal energy that the system can actually call upon in its current state. This capacity is closely related to the properties of the molten salt composite thermal storage material in the system (such as thermal storage density and current temperature), the quality of the molten salt, and the actual storage capacity of the thermal storage equipment. For example, the low-cost, low-melting-point, high-heat storage density molten salt composite thermal storage material used can store more thermal energy in the same volume, resulting in a correspondingly greater available thermal energy capacity.

[0054] In the specific judgment process, it is first necessary to compare the current operating status parameters of the thermal power unit with the target state required by the grid load fluctuation signal, and analyze whether the current output of the unit can meet the grid load demand. If there is a gap between the current output of the unit and the grid load demand, such as a sudden increase in the grid load and the current output of the unit is insufficient, or a sudden drop in the grid load and the unit has excess output, then it is necessary to further combine the available thermal energy capacity of the molten salt heat storage system to evaluate the feasibility of the adjustment. For example, when the grid load increases, it is necessary to check whether the available thermal energy capacity of the molten salt heat storage system is sufficient to compensate for the insufficient output of the unit by releasing heat; when the grid load decreases, it is necessary to determine whether the available thermal energy capacity can absorb the excess heat energy of the unit to avoid energy waste. At the same time, the safety and economy of the operation of the thermal power unit must also be considered, such as whether the adjustment process will cause the main steam parameters to exceed the safety range or whether it will significantly reduce the operating efficiency of the unit. By comprehensively considering the matching relationship between the operating status of the thermal power units and the available thermal energy capacity of the molten salt heat storage system, as well as the impact of adjustments on the system safety and economy, it is ultimately determined whether adjustment operations such as heat extraction and release are required, thereby providing an accurate decision-making basis for subsequent peak-shaving scheme optimization and system integration.

[0055] Step 103: When it is determined that adjustment is required, the adjustment is performed based on the control module.

[0056] The control module operates based on control theories such as heat transfer, fluid mechanics, and thermodynamics. It precisely controls the flow, heat transfer, and heat storage characteristics within key components, as well as their coupled control mechanisms, ensuring the scientific and effective nature of adjustments. Upon receiving a command requiring adjustment, the control module actuates the corresponding actuators based on the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt thermal storage system, combined with a pre-defined heat extraction and release optimization strategy for peak load regulation. For example, if heat release is needed to cope with peak grid load, the control module regulates key components such as the molten salt-water / steam heat exchanger. This allows the high-temperature molten salt in the thermal storage system to exchange heat with water or steam, generating high-temperature, high-pressure steam that enters the thermal power unit to boost its power output. If excess heat energy needs to be stored to cope with low grid load, the control module activates the high-pressure steam-molten salt heat exchanger, transferring the excess steam heat generated by the thermal power unit to the molten salt, raising its temperature and storing it there. During the entire adjustment process, the control module will also monitor the operating parameters of each key component in real time, such as the flow and temperature of the molten salt, the pressure and heat exchange efficiency of the heat exchanger, etc., and dynamically adjust the control strategy to ensure the safety and economy of the system operation. At the same time, it ensures that the adjustment operation can accurately match the fluctuating demand of the power grid load, thereby realizing the peak-shaving and frequency-regulating functions of the high-temperature steam molten salt heat storage system, and improving the stability and energy efficiency of the entire energy system.

[0057] In some embodiments, determining whether adjustment is required based on the operating status and available thermal energy capacity includes:

[0058] determining whether peak shaving operations are required based on the operating status and available thermal energy capacity;

[0059] Based on the operating status and available thermal energy capacity, it is determined whether frequency modulation operation is required.

[0060] Peak shaving primarily addresses large, long-term fluctuations in grid load, such as significant increases in load demand during peak hours or significant decreases during off-peak hours. The need for peak shaving is determined based on the current operating status of the thermal power unit, including the gap between the unit's real-time generated power and the grid's load demand, the unit's output adjustment potential (including whether the main steam parameters allow for this and whether boiler combustion efficiency can be rapidly increased or decreased), and whether the available thermal energy capacity of the molten salt thermal storage system is sufficient to compensate for or absorb this gap. For example, when the grid is experiencing peak load, the thermal power unit's current generated power cannot meet demand, and the unit itself cannot rapidly increase its output to the required level in the short term. If the molten salt thermal storage system has sufficient available thermal energy capacity and can effectively supplement the unit's output by releasing stored heat, peak shaving is considered necessary. Conversely, if the unit can meet the load demand through adjustment, or if the molten salt thermal storage system's available thermal energy capacity is insufficient to support peak shaving, peak shaving is not necessary.

[0061] Frequency modulation is mainly used to deal with smaller, short-term fluctuations in the grid load in order to maintain the stability of the grid frequency. The determination of whether frequency modulation is necessary also depends on the current operating status of the thermal power unit, such as the speed stability of the unit, the fluctuation of the output power, and whether the available thermal energy capacity of the molten salt heat storage system can quickly provide or absorb the corresponding thermal energy to smooth out power fluctuations. For example, when the grid frequency deviates due to a small fluctuation in the load, and the thermal power unit's own response speed is insufficient to quickly correct this deviation, if the available thermal energy capacity of the molten salt heat storage system can support rapid heat release or absorption, and then quickly adjust the unit's output power to stabilize the grid frequency, then frequency modulation is determined to be necessary; if the unit's own regulation capability can stabilize the frequency, or the molten salt heat storage system cannot meet the rapid response thermal energy demand, then frequency modulation is determined not to be necessary.

[0062] Whether judging peak shaving or frequency regulation, it is necessary to base the judgment on the actual output capacity, operational safety and economy reflected by the operating status of the thermal power units, as well as the heat storage and release potential determined by the available thermal energy capacity of the molten salt heat storage system. Combined with the specific situation of the grid load fluctuation, a comprehensive analysis is conducted to draw a conclusion on whether corresponding operations are needed, providing an accurate judgment basis for subsequent adjustment execution.

[0063] In some embodiments, after determining whether adjustment is required based on the operating status and available thermal energy capacity, the method further includes:

[0064] When it is determined that peak shaving operation is required, the heat extraction rate of the molten salt heat storage module is adjusted through the control module, and the heat energy is released to the steam system of the thermal power unit through the molten salt-steam heat exchange submodule or the molten salt-water / steam heat exchange submodule to adjust the output power of the unit.

[0065] When peak-shaving is required based on the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt thermal storage system, the control module adjusts the heat extraction rate of the molten salt thermal storage module, and releases heat energy to the thermal power unit steam system with the help of the molten salt-steam heat exchange submodule or the molten salt-water / water vapor heat exchange submodule to adjust the unit's output power. This is the specific implementation method for achieving peak-shaving. The molten salt thermal storage module is the core component of thermal energy storage. The molten salt composite thermal storage material used within it has the characteristics of low cost, low melting point, and high thermal storage density, and can efficiently store large amounts of thermal energy. The adjustment of the heat extraction rate is based on the peak-shaving requirements. The control module accurately controls the flow velocity, flow rate, and other parameters of the molten salt between the thermal storage module and the heat exchange submodule, thereby controlling the amount of thermal energy extracted per unit time.

[0066] As key components of heat transfer, the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule play the important role of transferring the heat energy stored in the molten salt to the steam system of the thermal power unit. Among them, the molten salt-steam heat exchange submodule can be directly connected to the steam system of the thermal power unit, allowing the high-temperature molten salt to exchange heat with the steam in the system to increase the temperature and pressure of the steam; the molten salt-water / steam heat exchange submodule can enable the high-temperature molten salt to exchange heat with water or steam to produce high-temperature and high-pressure steam that meets the needs of the unit. After these heated or generated steam enters the steam system of the thermal power unit, it can participate in the thermal cycle of the unit, drive the operation of equipment such as the steam turbine, and thereby increase the output power of the unit to meet the demand during peak load of the power grid; conversely, in the peak-shaving scenario where the output power of the unit needs to be reduced, the heat extraction rate can be adjusted to reduce the heat energy transferred to the steam system, thereby achieving a reduction in the output power of the unit, ensuring that the thermal power unit can operate stably and economically according to changes in the power grid load, giving full play to the role of the high-temperature steam molten salt heat storage system in the peak-shaving process, and improving the operating energy efficiency of the entire system and its response capability to power grid load fluctuations.

[0067] In some embodiments, after determining whether adjustment is required based on the operating status and available thermal energy capacity, the method further includes:

[0068] When it is determined that frequency modulation operation is required, the control module dynamically optimizes the switching strategy of the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule according to the real-time load change frequency, thereby achieving rapid response of thermal energy and power regulation.

[0069] When frequency modulation is required based on the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt thermal storage system, the control module dynamically optimizes the switching strategy between the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule according to the real-time load fluctuation frequency. This achieves rapid thermal energy response and power regulation, a critical operation for managing small, short-term fluctuations in grid load. Frequency modulation requires extremely fast response speed, requiring the release and absorption of thermal energy to quickly match small changes in grid frequency. As key heat transfer components, the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule each possess different heat transfer characteristics and response speeds. For example, the molten salt-steam heat exchange submodule can directly exchange heat with the existing steam of the thermal power unit, enabling fine-tuning of steam parameters in a relatively short period of time. The molten salt-water / steam heat exchange submodule, however, generates new steam by interacting with water or steam, potentially offering greater flexibility in the adjustment range.

[0070] During this process, the control module, informed by theories of heat transfer, fluid mechanics, and thermodynamics, combined with real-time load frequency monitoring, accurately analyzes the optimal switching timing and method between the two heat exchange submodules under current operating conditions. For example, when the grid load fluctuates rapidly with small fluctuations, the control module may prioritize switching to the faster-responding molten salt-steam heat exchange submodule. This allows for subtle and rapid adjustments to the unit's power output by rapidly adjusting the heat exchange intensity between the high-temperature molten salt and steam. Conversely, when the load frequency is relatively stable but continuous fine-tuning is still required, the control module may switch to the molten salt-water / steam heat exchange submodule, leveraging its superior heat transfer stability to maintain continuous and accurate power regulation. This dynamically optimized switching strategy allows the heat energy released by the molten salt heat storage system to quickly and accurately apply to the steam system of the thermal power unit, enabling real-time adjustment of the unit's output power, effectively smoothing grid frequency fluctuations and ensuring stable grid operation. It also leverages the performance advantages of both heat exchange submodules to improve the efficiency and reliability of frequency regulation.

[0071] In some embodiments, after performing the adjustment based on the control module, the method further includes:

[0072] The performance monitoring module collects system operating parameters and feeds the parameters back to the control module to adjust subsequent heat extraction and release control strategies based on the parameters.

[0073] After adjustments are made based on the control module, the system operating parameters are collected through the performance monitoring module and fed back to the control module. The subsequent heat extraction and release control strategies are then adjusted based on these parameters. This is an important closed-loop control link to ensure the continuous, stable, and efficient operation of the molten salt heat storage system. The performance monitoring module here can monitor various key operation-related parameters in the molten salt heat storage system in real time. These parameters cover the temperature, flow rate, and pressure of the molten salt, as well as the heat exchange efficiency, inlet and outlet temperatures, and pressure differences of key components such as the molten salt-steam heat exchanger and the molten salt-water / water steam heat exchanger, as well as the steam parameters (such as temperature, pressure, and flow rate) of the thermal power unit steam system.

[0074] The temperature of the molten salt directly reflects the amount of heat energy it stores, while the flow rate and pressure are related to the rate and stability of heat transfer. The heat exchange efficiency of a heat exchanger is a key indicator of heat transfer effectiveness. The temperature and pressure differential between the inlet and outlet can indicate whether the heat exchanger is operating properly and whether there are any issues affecting performance, such as scaling or blockage. The parameters of the steam system of a thermal power unit are related to the actual impact of heat release on the unit's output. The performance monitoring module promptly feeds these collected real-time parameters to the control module. The control module then evaluates the current heat extraction and release performance based on theoretical foundations such as heat transfer, fluid mechanics, and thermodynamics, combined with pre-defined system control methods. For example, if the heat exchange efficiency of the heat exchanger is monitored to be lower than expected, it may be due to insufficient molten salt flow or an abnormality inside the heat exchanger. The control module will adjust the molten salt flow control accordingly, or optimize the operating parameters of the heat exchanger to improve the heat exchange efficiency; if it is found that the temperature drop rate of the molten salt does not match the heat extraction demand, the control module will adjust the heat extraction rate to ensure that the subsequent heat extraction and release can more accurately meet the requirements of system operation and grid load. Through this real-time feedback and dynamic adjustment mechanism, the heat extraction and release control strategies are continuously optimized to ensure the overall energy efficiency of the high-temperature steam molten salt heat storage system, maintain the safety and economy of the system operation, and ensure its continued good performance in peak-shaving, frequency regulation and other operations.

[0075] Corresponding to the above-mentioned molten salt heat storage method, the present invention also provides a molten salt heat storage device. Since the device embodiment of the present invention corresponds to the above-mentioned method embodiment, any details not disclosed in the device embodiment can be referred to the above-mentioned method embodiment and will not be further described in the present invention.

[0076] Figure 2 A schematic diagram of the structure of a molten salt heat storage device provided in an embodiment of the present disclosure is shown in FIG. Figure 2 As shown, including:

[0077] an acquisition unit 21 for acquiring the current operating state of the thermal power unit and the available thermal energy capacity of the molten salt thermal storage system in response to a power grid load fluctuation signal;

[0078] a judgment unit 22 for judging whether adjustment is required based on the operating state and the available thermal energy capacity;

[0079] The adjustment unit 23 is configured to perform adjustment based on the control module when it is determined that adjustment is required.

[0080] Furthermore, in a possible implementation of the embodiment of the present disclosure, the adjusting unit 23 is further configured to:

[0081] determining whether peak shaving operations are required based on the operating status and available thermal energy capacity;

[0082] Based on the operating status and available thermal energy capacity, it is determined whether frequency modulation operation is required.

[0083] Furthermore, in a possible implementation of the embodiment of the present disclosure, the apparatus further includes:

[0084] The regulating unit 24 is used to adjust the heat extraction rate of the molten salt heat storage module through the control module after the regulating unit 23 determines whether adjustment is required based on the operating status and available thermal energy capacity. The regulating unit 24 releases heat energy to the steam system of the thermal power unit through the molten salt-steam heat exchange submodule or the molten salt-water / steam heat exchange submodule to regulate the output power of the unit when it is determined that peak shaving operation is required.

[0085] Furthermore, in a possible implementation of the embodiment of the present disclosure, as Figure 3 As shown, the device also includes:

[0086] The regulating unit 24 is further configured to, after the regulating unit 23 determines whether adjustment is required based on the operating status and available thermal energy capacity, dynamically optimize the switching strategy between the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule according to the real-time load change frequency through the control module when it is determined that frequency modulation operation is required, so as to achieve rapid response and power regulation of thermal energy.

[0087] Furthermore, in a possible implementation of the embodiment of the present disclosure, as Figure 3 As shown, the device also includes:

[0088] The feedback unit 25 is used to collect system operating parameters based on the performance monitoring module after the adjustment unit 23 performs adjustment based on the control module, and feed the parameters back to the control module to adjust the subsequent heat extraction and release control strategy based on the parameters.

[0089] It should be noted that the above explanation of the method embodiment is also applicable to the device of the embodiment of the present disclosure, and the principles are the same, which is no longer limited in the embodiment of the present disclosure.

[0090] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0091] Figure 4 A schematic block diagram of an example electronic device 300 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are provided as examples only and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0092] like Figure 4 As shown, the device 300 includes a computing unit 301, which can perform various appropriate actions and processes according to a computer program stored in a ROM (Read-Only Memory) 302 or a computer program loaded from a storage unit 308 into a RAM (Random Access Memory) 303. Various programs and data required for the operation of the device 300 can also be stored in the RAM 303. The computing unit 301, ROM 302, and RAM 303 are connected to each other via a bus 304. An I / O (Input / Output) interface 305 is also connected to the bus 304.

[0093] Various components in device 300 are connected to I / O interface 305, including: an input unit 306, such as a keyboard, mouse, etc.; an output unit 307, such as various types of displays, speakers, etc.; a storage unit 308, such as a magnetic disk, optical disk, etc.; and a communication unit 309, such as a network card, modem, wireless communication transceiver, etc. The communication unit 309 allows device 300 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0094] Computing unit 301 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of computing unit 301 include, but are not limited to, a CPU (Central Processing Unit), a GPU (Graphic Processing Unit), various specialized AI (Artificial Intelligence) computing chips, various computing units that run machine learning model algorithms, a DSP (Digital Signal Processor), and any suitable processor, controller, microcontroller, etc. Computing unit 301 performs the various methods and processes described above, such as the molten salt heat storage method. For example, in some embodiments, the molten salt heat storage method can be implemented as a computer software program tangibly embodied in a machine-readable medium, such as storage unit 308. In some embodiments, part or all of the computer program can be loaded and / or installed onto device 300 via ROM 302 and / or communication unit 309. When the computer program is loaded into RAM 303 and executed by computing unit 301, one or more steps of the method described above can be performed. Alternatively, in other embodiments, the computing unit 301 may be configured to execute the aforementioned molten salt heat storage method in any other appropriate manner (for example, by means of firmware).

[0095] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application-Specific Standard Products), SOCs (System on Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special-purpose or general-purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0096] The program code for implementing the method of the present disclosure can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device so that when the program code is executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0097] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or apparatus, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include an electrical connection based on one or more wires, a portable computer disk, a hard disk, RAM, ROM, EPROM (Electrically Programmable Read-Only-Memory) or flash memory, optical fiber, CD-ROM (Compact Disc Read-Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0098] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0099] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: LAN (Local Area Network), WAN (Wide Area Network), the Internet, and blockchain networks.

[0100] A computer system may include a client and a server. The client and server are generally remote from each other and typically interact via a communication network. This client-server relationship is established by computer programs running on the respective computers, establishing a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host, a host product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosts and VPS services ("Virtual Private Servers" or simply "VPS"). The server may also be a server in a distributed system or a server integrated with blockchain.

[0101] It's important to note that artificial intelligence (AI) is the study of how computers can simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, and planning). This encompasses both hardware and software technologies. AI hardware technologies generally include sensors, specialized AI chips, cloud computing, distributed storage, and big data processing. AI software technologies primarily encompass computer vision, speech recognition, natural language processing, machine learning / deep learning, big data processing, and knowledge graphs.

[0102] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not limited herein.

[0103] The above specific embodiments do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure shall be included within the scope of protection of this disclosure.

Claims

1. A molten salt heat storage method, characterized in that: include: Responding to power grid load fluctuation signals, obtaining the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt thermal storage system; determining whether adjustment is required based on the operating status and available thermal energy capacity; When it is determined that an adjustment is needed, the adjustment is performed based on the control module.

2. The molten salt heat storage method according to claim 1, characterized in that: The determining whether adjustment is required based on the operating status and available thermal energy capacity includes: determining whether peak shaving operations are required based on the operating status and available thermal energy capacity; Based on the operating status and available thermal energy capacity, it is determined whether frequency modulation operation is required.

3. The molten salt heat storage method according to claim 2, characterized in that: After determining whether adjustment is required based on the operating status and the available thermal energy capacity, the method further includes: When it is determined that peak shaving operation is required, the heat extraction rate of the molten salt heat storage module is adjusted through the control module, and the heat energy is released to the steam system of the thermal power unit through the molten salt-steam heat exchange submodule or the molten salt-water / steam heat exchange submodule to adjust the output power of the unit.

4. The molten salt heat storage method according to claim 2, characterized in that: After determining whether adjustment is required based on the operating status and the available thermal energy capacity, the method further includes: When it is determined that frequency modulation operation is required, the control module dynamically optimizes the switching strategy of the molten salt-steam heat exchange submodule and the molten salt-water / steam heat exchange submodule according to the real-time load change frequency, thereby achieving rapid response of thermal energy and power regulation.

5. The molten salt heat storage method according to any one of claims 1 to 4, characterized in that: After performing the adjustment based on the control module, the method further includes: The performance monitoring module collects system operating parameters and feeds the parameters back to the control module to adjust subsequent heat extraction and release control strategies based on the parameters.

6. A molten salt heat storage device, characterized in that: include: an acquisition unit, configured to obtain the current operating status of the thermal power unit and the available thermal energy capacity of the molten salt heat storage system in response to a power grid load fluctuation signal; a judgment unit, configured to judge whether adjustment is required based on the operating state and the available thermal energy capacity; The adjustment unit is configured to perform adjustment based on the control module when it is determined that adjustment is required.

7. The molten salt heat storage device according to claim 6, characterized in that: The adjustment unit is further configured to: determining whether peak shaving operations are required based on the operating status and available thermal energy capacity; Based on the operating status and available thermal energy capacity, it is determined whether frequency modulation operation is required.

8. An electronic device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 5.

9. A non-transitory computer-readable storage medium storing computer instructions, characterized in that: The computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 5.

10. A computer program product, characterized in that The invention comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 5.

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