A molten salt energy storage data analysis and management system and method

Abstract

The present application discloses a molten salt energy storage data analysis and management system and method. The method includes: acquiring and processing the internal temperature information and molten salt liquid level information during the operation of the molten salt energy storage system, obtaining heat exchange rate information and charge / discharge energy rate information and conducting comprehensive analysis to obtain working efficiency parameters, determining whether there are faulty devices in the molten salt energy storage system, and dealing with the faulty devices; acquiring and processing the internal pressure information and molten salt flow information during the operation of the molten salt energy storage system, obtaining the pressure variation coefficient and flow rate change coefficient of the molten salt energy storage system and conducting comprehensive evaluation to obtain the working safety parameters of the molten salt energy storage system, determining whether there are abnormal devices in the molten salt energy storage system, and dealing with the abnormal devices; thereby comprehensively evaluating the working efficiency and working safety of the molten salt energy storage system to ensure the safe and stable operation of the system.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage, and in particular to a molten salt energy storage data analysis and management system and method. Background Art

[0002] Molten salt energy storage is a technology that utilizes the temperature difference during the heating and cooling processes of molten salt to achieve heat energy storage and release. Molten salt energy storage technology can be applied to fields such as solar thermal power generation, industrial waste heat recovery, and heating, and has advantages such as high energy storage density, good safety, and long lifespan.

[0003] In the prior art, the data analysis and management of molten salt energy storage systems still rely on manual intervention and judgment, and cannot achieve intelligence. This not only increases labor costs but may also lead to deviations or errors in data analysis results due to human factors, and further lead to the inability to detect and handle system failures or abnormalities in a timely manner, affecting the safety and stability of the system. Summary of the Invention

[0004] In order to overcome the deficiencies of the above prior art, the present application provides a molten salt energy storage data analysis and management system and method.

[0005] In a first aspect, a molten salt energy storage data analysis and management method provided by the present application includes:

[0006] Obtain the internal temperature information of the molten salt energy storage system during operation, process and analyze the internal temperature information to obtain the heat exchange rate information of the molten salt energy storage system;

[0007] Obtain the molten salt liquid level information of the molten salt energy storage system during operation, process and analyze the molten salt liquid level information to obtain the charge and discharge energy rate information of the molten salt energy storage system;

[0008] Comprehensively analyze the heat exchange rate information and the charge and discharge energy rate information to obtain the working efficiency parameters of the molten salt energy storage system, and determine whether there are faulty devices in the molten salt energy storage system according to the working efficiency parameters and the working efficiency threshold, and process the faulty devices;

[0009] Obtain the internal pressure information of the molten salt energy storage system during operation, process and analyze the internal pressure information to obtain the pressure variation coefficient of the molten salt energy storage system;

[0010] Obtain the molten salt flow rate information of the molten salt energy storage system during operation, process and analyze the molten salt flow rate information to obtain the flow rate change rate coefficient of the molten salt energy storage system;

[0011] Comprehensively evaluate the pressure variation coefficient and the flow rate change rate coefficient to obtain the working safety parameters of the molten salt energy storage system. According to the working safety parameters, determine whether there are abnormal devices in the molten salt energy storage system and handle the abnormal devices.

[0012] By adopting the above technical solutions, the temperature information inside the molten salt energy storage system is monitored and analyzed in real time to obtain the heat exchange rate of the molten salt energy storage system. Evaluating the thermal performance index of the molten salt energy storage system through the heat exchange rate helps to optimize the thermal design of the system and improve the energy conversion efficiency. By analyzing the molten salt liquid level information, the charging and discharging rate of the molten salt energy storage system is calculated, and the energy storage capacity and response speed of the molten salt energy storage system are evaluated using the charging and discharging rate, which helps to predict the performance of the system under different demands. Combining the heat exchange rate and the charging and discharging rate information, comprehensively evaluate the working efficiency of the molten salt energy storage system. According to the working efficiency parameters, signs of equipment failure can be detected in a timely manner, so as to take necessary maintenance measures to prevent the further deterioration of the system performance. By monitoring the internal pressure information of the molten salt energy storage system, the pressure variation coefficient is calculated, and this coefficient reflects the stability of the internal pressure of the system. Pressure stability is crucial for preventing safety accidents such as system leakage and explosion. By analyzing the molten salt flow rate information, the flow rate change coefficient is obtained. Combining the pressure variation coefficient and the flow rate change rate coefficient, comprehensively evaluate the working safety of the molten salt energy storage system, so as to timely detect potential safety hazards in the system and take corresponding risk control measures to ensure the safe and stable operation of the system, providing a strong guarantee for the long-term stable operation of the system.

[0013] Preferably, the internal temperature information includes the average temperature w1 of the hot-side fluid of the high-temperature molten salt and the average temperature w2 of the cold-side fluid of the working medium. Through the formula Calculate the heat transfer temperature difference of the molten salt energy storage system ;

[0014] Obtain the heat transfer coefficient CX and the heat transfer area CM of the heat exchanger in the molten salt energy storage system. Through the formula Calculate the heat exchange rate information Q of the molten salt energy storage system.

[0015] By adopting the above technical solution, by calculating the heat transfer temperature difference between the high-temperature molten salt and the working medium, the heat energy transfer efficiency between the two is quantified, reflecting the driving force of heat energy transfer between the molten salt and the working medium. A smaller heat transfer temperature difference may mean that there is room for optimization in the design or operation of the heat exchanger, or measures need to be taken to reduce the thermal resistance. The heat exchange rate of the molten salt energy storage system is calculated using the collected temperature information, heat transfer coefficient, and heat transfer area, reflecting the amount of heat transferred per unit time of the system and its performance under different operating conditions. At the same time, by monitoring the change of the heat exchange rate, the phenomenon of system performance degradation or equipment failure can be detected in a timely manner, providing important support for the optimized operation, fault prevention, and safety management of the molten salt energy storage system.

[0016] Preferably, the molten salt liquid level information includes the first liquid level information y1 and the second liquid level information y2 at adjacent time points. Through the formula the liquid level difference at adjacent time points is calculated ;

[0017] Based on the liquid level difference at the adjacent time points , through the formula the liquid level change rate Y at adjacent time points is calculated, where t1 is the time point corresponding to the first liquid level information and t2 is the time point corresponding to the second liquid level information;

[0018] When the liquid level change rate Y is positive, the molten salt energy storage system is charging. At this time, the charging rate of the molten salt energy storage system is proportional to the liquid level change rate. Through the formula the charging rate information C1 of the molten salt energy storage system is calculated, where is a proportionality factor and is greater than zero;

[0019] When the liquid level change rate Y is negative, the molten salt energy storage system is discharging. At this time, the discharging rate of the molten salt energy storage system is proportional to the absolute value of the liquid level change rate. Through the formula the discharging rate information C2 of the molten salt energy storage system is calculated, where is a proportionality factor and is greater than zero.

[0020] By adopting the above technical solution, by comparing the liquid level information at adjacent time points, the liquid level difference at adjacent time points is calculated, and the liquid level change rate is calculated according to the time interval between adjacent time points, reflecting the rate of change of the molten salt liquid level. It is a key indicator for evaluating the charging and discharging rates of the molten salt energy storage system, helps to evaluate the energy storage capacity and response speed of the system, can detect the signs of system performance degradation or equipment failure in a timely manner, and provides a basis for the fault prevention and safety management of the molten salt energy storage system.

[0021] Preferably, the heat exchange rate information Q and the charging rate information C1 are extracted. Through the formula Calculate the working efficiency parameters of the molten salt energy storage system , where m1 is the weight of the heat exchange rate information Q, and m2 is the weight of the charging rate information C1;

[0022] Extract the heat exchange rate information Q and the discharging rate information C2, and calculate the working efficiency parameters of the molten salt energy storage system through the formula Calculate the working efficiency parameters of the molten salt energy storage system , where n1 is the weight of the heat exchange rate information Q, and n2 is the weight of the discharging rate information C2;

[0023] Obtain the external environment information of the molten salt energy storage system, where the external environment information includes the environmental temperature information WD, the environmental wind speed information FS, and the environmental wind direction information FX;

[0024] Calculate the change amount GB of the influence of environmental parameters on the working efficiency of the molten salt energy storage system through the formula , where n1, n2, and n3 are proportionality factors and are greater than zero;

[0025] Obtain the standard working efficiency parameters of the molten salt energy storage system, apply the change amount of the influence of the working efficiency to the standard working efficiency parameters to obtain the corrected working efficiency parameters, and set the corrected working efficiency parameters as the working efficiency threshold of the molten salt energy storage system;

[0026] Based on the working efficiency parameters and the working efficiency threshold, determine whether there are faulty devices in the molten salt energy storage system, and process the faulty devices.

[0027] By adopting the above technical solutions, combined with the heat exchange rate information, the charging rate information or the discharging rate information, the working efficiency parameters of the molten salt energy storage system are obtained through weighted calculation, which can more comprehensively reflect the performance of the molten salt energy storage system during operation. Collect the external environment information including the environmental temperature, environmental wind speed, and environmental wind direction, calculate the specific change amount of the influence of environmental parameters on the working efficiency of the molten salt energy storage system through the formula, apply the change amount of the influence of environmental parameters on the working efficiency to the standard working efficiency parameters to obtain the corrected working efficiency parameters, and set them as the working efficiency threshold of the system. The corrected working efficiency threshold takes into account various factors in the actual operating environment, so it can more accurately reflect the performance requirements of the molten salt energy storage system under actual working conditions, which helps to avoid misjudgment and missed judgment, and improve the accuracy and timeliness of fault detection. According to the calculated working efficiency parameters and the working efficiency threshold, the signs of performance degradation or equipment failure can be detected in time, so as to take necessary maintenance measures to avoid the problem from deteriorating and affecting the normal operation of the system, which helps to extend the service life of the equipment and improve the overall availability and economy of the system.

[0028] Preferably, based on the work efficiency parameter and the work efficiency threshold, when the work efficiency parameter fails to reach the work efficiency threshold, it is determined that there is a faulty device in the molten salt energy storage system, and the faulty device can be restored through repair;

[0029] Obtain the repair information of the faulty device. The repair information of the faulty device includes the repair difficulty information XN, the repair personnel status information RZ, and the part adaptability information JS. Through the formula Calculate the repair duration WS of the faulty device, where l1 is the weight of the repair difficulty information XN, l2 is the repair personnel status information RZ, and l3 is the weight of the part adaptability information JS;

[0030] Obtain the duration for a normal device to reach the standard working state. When the repair duration of the faulty device is less than or equal to the duration for a normal device to reach the standard working state, repair the faulty device;

[0031] When the repair duration of the faulty device is greater than the duration for a normal device to reach the standard working state, replace the faulty device with a normal device.

[0032] By adopting the above technical solutions, compare the work efficiency parameter and the work efficiency threshold to timely detect devices with substandard performance, which need to be repaired or replaced. Collect repair information including repair difficulty, repair personnel status, and part adaptability. These repair information are the basis for evaluating the feasibility and duration of repairing faulty devices. By calculating the repair difficulty, repair personnel status, and part adaptability through weighting, obtain the estimated repair duration of the faulty device, which is used to compare the costs and time efficiencies of the two treatment methods of repair and replacement; if the repair duration is short, choosing repair can restore the system performance faster. If the repair duration is long, replacing the device may be more appropriate to avoid long-term performance loss and optimize the cost-effectiveness of repair and replacement.

[0033] Preferably, collect the internal pressure information of the molten salt energy storage system during operation at regular intervals for N consecutive times to obtain N internal pressure parameters, and label the N internal pressure parameters as L1, L2,..., LN respectively;

[0034] Through the formula Calculate the average value of the N internal pressure parameters ;

[0035] Through the formula Calculate the standard deviation of the N internal pressure parameters ;

[0036] Through the formula Calculate the pressure coefficient of variation of the molten salt energy storage system .

[0037] By adopting the above technical solutions, the pressure change data of the system over a period of time is obtained, and the average value of N internal pressure parameters is calculated through formulas, which helps to understand the typical pressure value of the system during normal operation and provides a reference for judging whether the system deviates from the normal state. By calculating the standard deviation of N internal pressure parameters, the pressure fluctuation degree of the system during operation can be quantified. A smaller standard deviation means that the system pressure fluctuation is smaller and the operation is relatively stable; while a larger standard deviation may indicate that there are large pressure fluctuations in the system, and potential safety hazards need to be concerned. Calculate the coefficient of variation of the pressure of the molten salt energy storage system. The coefficient of variation is a dimensionless index that eliminates the influence of data units and average value size on the evaluation of volatility, making the comparison of volatility between different data sets more objective and accurate. By monitoring the change of the coefficient of variation of pressure, abnormal changes in the internal pressure volatility of the system can be detected in time, providing an important basis for preventing system failures and ensuring safe operation.

[0038] Preferably, the molten salt flow information of the molten salt energy storage system during operation is collected once every certain period of time, and 2M times of continuous collection are carried out to obtain 2M molten salt flow parameters;

[0039] Calculate the ratios of the differences between the molten salt flow parameters at adjacent time points to the time differences respectively to obtain M molten salt flow change rates, and label the M molten salt flow change rates as R1, R2,..., RM;

[0040] Through the formula Calculate the standard deviation of the M molten salt flow change rates , that is, the flow change rate coefficient of the molten salt energy storage system .

[0041] By adopting the above technical solutions, the dynamic change data of the molten salt flow of the system over a period of time is obtained. Calculate the ratios of the differences between the molten salt flow parameters at adjacent time points to the time differences respectively to obtain M molten salt flow change rates. The molten salt flow change rate reflects the increase and decrease speed of the molten salt flow in different time periods and is a key index for evaluating the dynamic response characteristics of the molten salt energy storage system. It can help operators understand the flow adjustment ability of the system under different working conditions and the sensitivity of the system to external disturbances. Calculate the standard deviation of the M molten salt flow change rates through formulas, that is, the flow change rate coefficient of the molten salt energy storage system. The magnitude of the flow change rate coefficient reflects the stability and consistency of the molten salt flow change. A smaller coefficient value means that the flow change is relatively stable and the system control is more precise; while a larger coefficient value may indicate that there are large flow fluctuations or unstable control in the system, and it is necessary to further optimize the system control strategy or check the equipment status.

[0042] Preferably, extract the coefficient of variation of the pressure and the flow rate change rate coefficient ;

[0043] The working safety parameter GA of the molten salt energy storage system is calculated through the formula , where u1 is the influence factor of the pressure variation coefficient , and u2 is the influence factor of the flow rate change rate coefficient ;

[0044] Perform time series analysis on the working safety parameter to obtain the change trend curve of the working safety parameter, and obtain the change rate of the working safety parameter according to the change trend curve;

[0045] Based on the change rate of the working safety parameter, set the standard change range of the working safety parameter of the molten salt energy storage system, determine whether there is an abnormal device in the molten salt energy storage system, and process the abnormal device.

[0046] By adopting the above technical solution, combining the pressure variation coefficient and the flow rate change rate coefficient, calculate the working safety parameter of the molten salt energy storage system, perform time series analysis on the working safety parameter to obtain its change trend curve, and reveal the evolution law of the working safety parameter over time; further calculate the change rate of this curve, that is, the change rate of the working safety parameter. Set the standard change range of the working safety parameter of the molten salt energy storage system, compare the change rate of the working safety parameter with the standard range, and abnormal devices in the system can be discovered in time. Once an abnormal device is found, corresponding treatment measures are immediately taken, which can minimize the impact of the abnormal device on the system and improve the reliability and stability of the system.

[0047] Preferably, extract the change rate of the working safety parameter and the standard change range of the working safety parameter of the molten salt energy storage system. When the change rate of the working safety parameter exceeds the standard change range, it is determined that there is an abnormal device in the molten salt energy storage system, and the abnormal device cannot be restored through repair;

[0048] Isolate the abnormal device, obtain the type parameter and specification parameter of the abnormal device, and screen out the device consistent with the type parameter and specification parameter as the standard replacement device;

[0049] Connect the molten salt in the abnormal device to the standard replacement device through a heat exchanger, control the flow rate and direction of the molten salt in the abnormal device, transfer the heat energy of the abnormal device to the standard replacement device, and connect the standard replacement device that has completed the heat energy transfer to the molten salt energy storage system.

[0050] By adopting the above technical solutions, by comparing the actual change rate of the working safety parameters of the system with the standard change range, it is possible to accurately determine whether the system has fluctuations beyond the normal range. When the change rate of the working safety parameters exceeds the standard change range, it is determined that there is an abnormal device in the molten salt energy storage system, and it is immediately isolated to protect other parts of the system from being affected and reduce the maintenance cost. Obtain the type parameters and specification parameters of the abnormal device, and starting from these parameters, screen out the standard replacement devices that match the abnormal device to ensure the compatibility and performance of the replacement device, and at the same time ensure that the new device can be seamlessly connected to the system, reducing the risk of secondary failures caused by device mismatch. Use a heat exchanger to connect the molten salt in the abnormal device with the standard replacement device, realizing the safe and efficient transmission of molten salt between the abnormal device and the replacement device, which helps to maintain the thermal energy continuity of the system and reduce energy loss. And after completing the thermal energy transmission, connect the new device to the molten salt energy storage system, which can reduce energy waste, restore the normal operating state of the system, and reduce downtime and economic losses.

[0051] In a second aspect, a molten salt energy storage data analysis and management system includes:

[0052] A temperature information module for obtaining the internal temperature information of the molten salt energy storage system during operation, processing and analyzing the internal temperature information to obtain the heat exchange rate information of the molten salt energy storage system;

[0053] A liquid level information module for obtaining the molten salt liquid level information of the molten salt energy storage system during operation, processing and analyzing the molten salt liquid level information to obtain the charge and discharge energy rate information of the molten salt energy storage system;

[0054] An efficiency analysis module for comprehensively analyzing the heat exchange rate information and the charge and discharge energy rate information to obtain the working efficiency parameters of the molten salt energy storage system, and judging whether there is a faulty device in the molten salt energy storage system according to the working efficiency parameters and the working efficiency threshold, and processing the faulty device;

[0055] A pressure information module for obtaining the internal pressure information of the molten salt energy storage system during operation, processing and analyzing the internal pressure information to obtain the pressure variation coefficient of the molten salt energy storage system;

[0056] A flow rate information module for obtaining the molten salt flow rate information of the molten salt energy storage system during operation, processing and analyzing the molten salt flow rate information to obtain the flow rate change rate coefficient of the molten salt energy storage system;

[0057] A safety analysis module for comprehensively evaluating the pressure variation coefficient and the flow rate change rate coefficient to obtain the working safety parameters of the molten salt energy storage system, and judging whether there is an abnormal device in the molten salt energy storage system according to the working safety parameters, and processing the abnormal device.

[0058] Compared with the prior art, the present invention has the following features and beneficial effects:

[0059] 1. Real-time monitor and analyze the temperature information inside the molten salt energy storage system to obtain the heat exchange rate of the molten salt energy storage system. Evaluate the thermal performance index of the molten salt energy storage system through the heat exchange rate, which helps to optimize the thermal design of the system and improve the energy conversion efficiency. By analyzing the molten salt level information, calculate the charging and discharging rate of the molten salt energy storage system, and use the charging and discharging rate to evaluate the energy storage capacity and response speed of the molten salt energy storage system, which helps to predict the performance of the system under different demands. Combine the heat exchange rate and the charging and discharging rate information to comprehensively evaluate the working efficiency of the molten salt energy storage system. According to the working efficiency parameters, signs of equipment failure can be detected in a timely manner, so as to take necessary maintenance measures to avoid further deterioration of the system performance. By monitoring the internal pressure information of the molten salt energy storage system, calculate the pressure variation coefficient, which reflects the stability of the internal pressure of the system. Pressure stability is crucial for preventing safety accidents such as system leakage and explosion. By analyzing the molten salt flow information, obtain the flow change system. Combine the pressure variation coefficient and the flow change rate coefficient to comprehensively evaluate the working safety of the molten salt energy storage system, so as to detect potential safety hazards in the system in a timely manner and take corresponding risk control measures to ensure the safe and stable operation of the system, providing a strong guarantee for the long-term stable operation of the system.

[0060] 2. Compare the working efficiency parameters with the working efficiency threshold to timely detect equipment with substandard performance, which needs to be repaired or replaced. Collect maintenance information including maintenance difficulty, maintenance personnel status and part compatibility. These maintenance information are the basis for evaluating the feasibility and duration of repairing faulty equipment. By weighted calculation of maintenance difficulty, maintenance personnel status and part compatibility, obtain the estimated maintenance duration of the faulty equipment, which is used to compare the costs and time efficiencies of the two treatment methods of repair and replacement; if the maintenance duration is short, choosing to repair can restore the system performance faster. If the maintenance duration is long, replacing the equipment may be more appropriate to avoid long-term performance loss and optimize the cost-benefit of repair and replacement.

[0061] 3. By comparing the actual change rate of the system's working safety parameters with the standard change range, it is possible to accurately determine whether the system has fluctuations beyond the normal range. When the change rate of the working safety parameters exceeds the standard change range, it is determined that there is an abnormal device in the molten salt energy storage system, and it is immediately isolated to protect other parts of the system from being affected and reduce the maintenance cost. Obtain the type parameters and specification parameters of the abnormal device. Starting from these parameters, screen out the standard replacement devices that match the abnormal device to ensure the compatibility and performance of the replacement devices, and at the same time ensure that the new devices can be seamlessly connected to the system, reducing the risk of secondary failures caused by device mismatch. Use a heat exchanger to connect the molten salt in the abnormal device with the standard replacement device, realizing the safe and efficient transmission of molten salt between the abnormal device and the replacement device, which helps to maintain the thermal energy continuity of the system and reduce energy losses. And after completing the thermal energy transmission, connect the new device to the molten salt energy storage system, which can reduce energy waste, restore the normal operating state of the system, and reduce downtime and economic losses. Description of the Drawings

[0062] Figure 1 is a block diagram of the steps of a method for data analysis and management based on molten salt energy storage mainly embodied in this embodiment;

[0063] Figure 2 is a block diagram of the steps of sub-step S1 mainly embodied in this embodiment;

[0064] Figure 3 is a block diagram of the steps of sub-step S2 mainly embodied in this embodiment;

[0065] Figure 4 is a block diagram of the steps of sub-step S3 mainly embodied in this embodiment;

[0066] Figure 5 is a block diagram of the steps of sub-step S36 mainly embodied in this embodiment;

[0067] Figure 6 is a block diagram of the steps of sub-step S4 mainly embodied in this embodiment;

[0068] Figure 7 is a block diagram of the steps of sub-step S5 mainly embodied in this embodiment;

[0069] Figure 8 is a block diagram of the steps of sub-step S6 mainly embodied in this embodiment;

[0070] Figure 9 is a block diagram of the steps of sub-step S64 mainly embodied in this embodiment;

[0071] Figure 10 is a block diagram of the structure of a data analysis and management system based on molten salt energy storage mainly embodied in this embodiment.

[0072] Explanation of the accompanying drawings: 1. Temperature information module; 2. Liquid level information module; 3. Work efficiency analysis module; 4. Pressure information module; 5. Flow information module; 6. Safety analysis module. DETAILED DESCRIPTION

[0073] The present invention is further described in detail below with reference to the following examples.

[0074] Reference Figure 1 , a method and system for analyzing and managing molten salt energy storage data, the method comprising the following steps:

[0075] S1. Obtaining internal temperature information of the molten salt energy storage system during operation, processing and analyzing the internal temperature information, and obtaining heat exchange rate information of the molten salt energy storage system;

[0076] S2. Obtaining molten salt level information of the molten salt energy storage system during operation, processing and analyzing the molten salt level information, and obtaining charge and discharge rate information of the molten salt energy storage system;

[0077] S3. Comprehensively analyze the heat exchange rate information and the charge and discharge rate information to obtain the working efficiency parameters of the molten salt energy storage system, determine whether there is a faulty device in the molten salt energy storage system according to the working efficiency parameters and the working efficiency threshold, and handle the faulty device;

[0078] S4. Obtaining internal pressure information of the molten salt energy storage system during operation, processing and analyzing the internal pressure information, and obtaining a pressure variation coefficient of the molten salt energy storage system;

[0079] S5. Obtaining molten salt flow information during operation of the molten salt energy storage system, processing and analyzing the molten salt flow information, and obtaining a flow rate change coefficient of the molten salt energy storage system;

[0080] S6. Comprehensively evaluate the pressure variation coefficient and the flow rate change coefficient to obtain the working safety parameters of the molten salt energy storage system, determine whether there are abnormal devices in the molten salt energy storage system based on the working safety parameters, and handle the abnormal devices.

[0081] In practical applications, the internal temperature information of the molten salt energy storage system during operation can be obtained through a temperature sensor. By analyzing and calculating the internal temperature information, the heat exchange rate of the molten salt energy storage system can be obtained. Evaluating the thermal performance index of the molten salt energy storage system through the heat exchange rate helps to optimize the thermal design of the system and improve the energy conversion efficiency. The molten salt liquid level information of the molten salt energy storage system during operation is obtained through a liquid level sensor. By analyzing the molten salt liquid level information, the charging and discharging rate of the molten salt energy storage system is calculated. Using the charging and discharging rate to evaluate the energy storage capacity and response speed of the molten salt energy storage system helps to predict the performance of the system under different demands. Through comprehensive analysis of the heat exchange rate and charging and discharging efficiency information, the working efficiency parameter of the molten salt energy storage system is calculated. If the working efficiency parameter is lower than the preset threshold, it is determined that there is a faulty device in the system, and necessary maintenance measures are taken to prevent further deterioration of the system performance. The internal pressure information of the molten salt energy storage system is collected through a pressure sensor, and the pressure variation coefficient is calculated, which helps to evaluate the pressure stability of the system under different working conditions and whether there are potential safety hazards. The molten salt flow rate in the molten salt energy storage system is monitored in real time using a flow sensor, and the molten salt flow rate information is analyzed to obtain the flow rate change coefficient. Combining the pressure variation coefficient and the flow rate change rate coefficient, the working safety of the molten salt energy storage system is comprehensively evaluated, so as to timely discover the safety hazards existing in the system and take corresponding risk control measures to ensure the safe and stable operation of the system.

[0082] Referring to Figure 2 , the specific step S1 includes the following sub-steps:

[0083] S11. The internal temperature information includes the average temperature w1 of the hot-side fluid of the high-temperature molten salt and the average temperature w2 of the cold-side fluid of the working medium. Through the formula the heat transfer temperature difference of the molten salt energy storage system is calculated as .

[0084] S12. Obtain the heat transfer coefficient CX and the heat transfer area CM of the heat exchanger in the molten salt energy storage system. Through the formula the heat exchange rate information Q of the molten salt energy storage system is calculated.

[0085] In practical applications, the heat transfer temperature difference of the molten salt energy storage system is calculated through the average temperature of the hot-side fluid of the high-temperature molten salt and the average temperature of the cold-side fluid of the working medium. The heat transfer temperature difference reflects the driving force for heat transfer from the high-temperature molten salt to the working medium, determines the rate and direction of heat transfer. By calculating the heat transfer temperature difference, the design of the heat exchanger can be optimized, the thermal efficiency of the system can be improved, and energy consumption can be reduced. The heat transfer coefficient reflects the heat transfer capacity of the heat exchanger per unit heat transfer area and unit temperature difference. The heat transfer area determines the contact area for heat transfer. Based on the heat transfer temperature difference, heat transfer coefficient, and heat transfer area, the heat exchange rate of the molten salt energy storage system can be calculated. By monitoring the change of the heat exchange rate, the phenomenon of system performance degradation or equipment failure can be detected in a timely manner, providing important support for the optimized operation, fault prevention, and safety management of the molten salt energy storage system. For example, a molten salt energy storage system is operating. The average temperature w1 of the hot-side fluid of the high-temperature molten salt is monitored by a temperature sensor to be 500 °C, the average temperature w2 of the cold-side fluid of the working medium is 250 °C, the heat transfer coefficient CX of the heat exchanger is 50 W / (m²·K), and the heat transfer area CM is 10 m². The heat transfer temperature difference ΔT is calculated by the formula ΔT = w1 - w2 = 250 °C. Using the formula Q = CX * CM * ΔT, the heat exchange rate Q = 50 W / (m²·K) * 10 m² * 250 °C = 125 kW is calculated, indicating that the molten salt energy storage system transfers heat from the high-temperature molten salt to the working medium at a rate of 125 kW through the heat exchanger. By monitoring and calculating these parameters in real time, the operator can timely understand the thermal performance state of the system and take corresponding measures for optimization or adjustment when necessary.

[0086] Referring to Figure 3 , the specific step S2 includes the following sub-steps:

[0087] S21. The molten salt level information includes the first level information y1 and the second level information y2 at adjacent time points. Through the formula the level difference at adjacent time points is calculated as ;

[0088] S22. Based on the level difference at adjacent time points, through the formula the level change rate Y at adjacent time points is calculated, where t1 is the time point corresponding to the first level information and t2 is the time point corresponding to the second level information;

[0089] S23. When the level change rate Y is positive, the molten salt energy storage system is charging. At this time, the charging rate of the molten salt energy storage system is proportional to the level change rate. Through the formula the charging rate information C1 of the molten salt energy storage system is calculated, where is a proportionality factor and is greater than zero;

[0090] S24. When the liquid level change rate Y is negative, the molten salt energy storage system is discharging. At this time, the energy release rate of the molten salt energy storage system is proportional to the absolute value of the liquid level change rate. Through the formula the energy release rate information C2 of the molten salt energy storage system is calculated, where is the proportionality factor and is greater than zero.

[0091] In practical applications, by calculating the difference between the first liquid level information y1 and the second liquid level information y2 at adjacent time points, the change amount Y of the liquid level can be obtained. The liquid level change rate Y reflects the change speed of the liquid level per unit time, and it is a key parameter for evaluating the charging and discharging rates of the molten salt energy storage system; when the liquid level change rate Y is positive, it indicates that the molten salt liquid level is rising and the system is charging, and the energy charging rate is proportional to the liquid level change rate; when Y is negative, it indicates that the molten salt liquid level is falling and the system is discharging, and the energy release rate is proportional to the absolute value of the liquid level change rate; the faster the liquid level changes, the higher the charging and discharging rates, and the stronger the energy storage capacity and response speed of the system; conversely, there are signs of performance degradation or equipment failure in the system, providing a basis for fault prevention and safety management of the molten salt energy storage system. Suppose a molten salt energy storage system measures the first liquid level information y1 as 10 meters and the second liquid level information y2 as 12 meters at two adjacent time points t1 and t2 (for example, t1 = 1 hour, t2 = 2 hours). Through calculation, the liquid level difference Δy = y2 - y1 = 2 meters is obtained, and the liquid level change rate Y = Δy / (t2 - t1) = 2 m / h is calculated. Since the liquid level change rate Y is positive, it is determined that the system is charging; if the proportionality factor is = 0.5, then the energy charging rate information = 1 MW (assuming that a 1-meter change in the liquid level corresponds to an energy change of 0.5 MW), which means that in the current time period, the molten salt energy storage system is charging at a rate of 1 MW.

[0092] Referring to Figure 4 , the specific step S3 includes the following sub-steps:

[0093] S31. Extract the heat exchange rate information Q and the energy charging rate information C1, and calculate the working efficiency parameter of the molten salt energy storage system through the formula, where m1 is the weight of the heat exchange rate information Q, and m2 is the weight of the energy charging rate information C1; where m1 is the weight of the heat exchange rate information Q and m2 is the weight of the energy charging rate information C1;

[0094] S32. Extract the heat exchange rate information Q and the energy release rate information C2, and calculate the working efficiency parameter of the molten salt energy storage system through the formula, where n1 is the weight of the heat exchange rate information Q and n2 is the weight of the energy release rate information C2; where n1 is the weight of the heat exchange rate information Q and n2 is the weight of the energy release rate information C2;

[0095] S33. Obtain the external environment information of the molten salt energy storage system, where the external environment information includes environmental temperature information WD, environmental wind speed information FS, and environmental wind direction information FX;

[0096] S34. Through the formula calculate the change amount GB of the influence of environmental parameters on the working efficiency of the molten salt energy storage system, where n1, n2, and n3 are proportionality factors and are greater than zero;

[0097] S35. Obtain the standard working efficiency parameter of the molten salt energy storage system, apply the change amount of the working efficiency influence to the standard working efficiency parameter to obtain the corrected working efficiency parameter, and set the corrected working efficiency parameter as the working efficiency threshold of the molten salt energy storage system;

[0098] S36. Based on the working efficiency parameter and the working efficiency threshold, determine whether there is a faulty device in the molten salt energy storage system and process the faulty device.

[0099] In actual operation, by extracting the heat exchange rate information Q and the charging rate information C1, and combining their weights m1 and m2, the working efficiency parameter of the molten salt energy storage system in the charging state can be calculated, which reflects the comprehensive efficiency of heat exchange and energy storage during the charging process of the system. Similarly, by extracting the heat exchange rate information Q and the discharging rate information C2, and combining their weights n1 and n2, the working efficiency parameter of the system in the discharging state can be calculated, which reflects the comprehensive performance of the system during the discharging process. The working efficiency of the molten salt energy storage system not only depends on its internal parameters but is also affected by the external environment. By obtaining the environmental temperature information WD, environmental wind speed information FS, and environmental wind direction information FX, and combining the proportionality factors n1, n2, and n3, the change amount GB of the influence of environmental parameters on the system working efficiency can be calculated, which helps to more accurately evaluate the performance of the system in the actual working environment. After obtaining the standard working efficiency parameter of the molten salt energy storage system, applying the change amount GB of the influence of environmental parameters on the working efficiency to this standard parameter can obtain the corrected working efficiency parameter. The corrected parameter is closer to the performance of the system in actual operation, so it is more reasonable to use it as the working efficiency threshold of the molten salt energy storage system. By comparing the real-time calculated working efficiency parameter and the working efficiency threshold, it can be determined whether there is a faulty device in the molten salt energy storage system. If the real-time parameter is lower than the threshold, it indicates that the system performance has declined and there may be a faulty device, which requires further inspection and processing.

[0100] Refer to Figure 5 , the specific step S36 includes the following sub-steps:

[0101] S361. Based on the work efficiency parameter and the work efficiency threshold, when the work efficiency parameter fails to reach the work efficiency threshold, it is determined that there is a faulty device in the molten salt energy storage system, and the faulty device can be restored through repair;

[0102] S362. Obtain the maintenance information of the faulty device. The maintenance information of the faulty device includes the maintenance difficulty information XN, the status information RZ of the maintenance personnel, and the part adaptability information JS. Through the formula calculate the maintenance duration WS of the faulty device, where l1 is the weight of the maintenance difficulty information XN, l2 is the status information RZ of the maintenance personnel, and l3 is the weight of the part adaptability information JS;

[0103] S363. Obtain the duration for a normal device to reach the standard working state. When the maintenance duration of the faulty device is less than or equal to the duration for a normal device to reach the standard working state, perform maintenance on the faulty device;

[0104] S364. When the maintenance duration of the faulty device is greater than the duration for a normal device to reach the standard working state, use a normal device to replace the faulty device.

[0105] In actual operation, when the monitored working efficiency parameter is lower than the preset working efficiency threshold, the system can automatically determine that there is a faulty device, promptly detect devices with performance degradation or failure, and avoid causing greater impact on the entire system. Once a faulty device is identified, considering the maintenance difficulty information XN, the status information RZ of maintenance personnel, and the part compatibility information JS of the faulty device, the maintenance duration WS of the faulty device is obtained, which reflects the time required for the maintenance task under given conditions. Compare the maintenance duration of the faulty device with the time required for a normal device to reach the standard working state. If the maintenance duration is shorter, it indicates that the faulty device can be quickly restored, so the choice is to perform maintenance; if the maintenance duration is longer and exceeds the time required for a normal device to reach the standard working state, then in order to reduce the system downtime, a more reasonable choice is to use a normal device to replace the faulty device. Suppose a heat exchanger in a molten salt energy storage system is identified as a faulty device, and its working efficiency parameter is lower than the preset threshold. The maintenance difficulty information XN: medium difficulty, corresponding value is 60 (range 1 - 100), the status information RZ of maintenance personnel: experienced, corresponding value is 90 (range 1 - 100), the part compatibility information JS: high compatibility, corresponding value is 85 (range 1 - 100), weights l1 = 0.4, l2 = 0.3, l3 = 0.3. The calculated maintenance duration WS = 0.4 * 60 + 0.3 * 90 + 0.3 * 85 = 88.5 hours; the time required for a normal device to reach the standard working state is 80 hours. Since the calculated maintenance duration of 88.5 hours is greater than the time of 80 hours for a normal device to reach the standard working state, the decision is more inclined to replace the faulty device rather than perform maintenance, thereby minimizing the system downtime and ensuring the continuous operation of the energy storage system.

[0106] Refer to Figure 6 , and the specific step S4 includes the following sub - steps:

[0107] S41. Collect the internal pressure information of the molten salt energy storage system during operation at regular intervals for N consecutive times to obtain N internal pressure parameters, and label the N internal pressure parameters as L1, L2,..., LN respectively;

[0108] S42. Calculate the average value of the N internal pressure parameters through the formula ;

[0109] S43. Calculate the standard deviation of the N internal pressure parameters through the formula ;

[0110] S44. Calculate the pressure coefficient of variation of the molten salt energy storage system through the formula .

[0111] In actual operation, pressure change data of the system over a period of time is obtained through a pressure sensor, and the average value of N internal pressure parameters is calculated through a formula to understand the overall level of the system pressure and provide a reference for judging whether the system deviates from the normal state. By calculating the standard deviation of the N internal pressure parameters, the degree of pressure fluctuation during the operation of the system is quantified. A smaller standard deviation means that the system pressure fluctuation is small and the operation is relatively stable; while a larger standard deviation may indicate that there is a large pressure fluctuation in the system, and potential safety hazards need to be concerned. Calculate the coefficient of variation of the pressure of the molten salt energy storage system. The coefficient of variation is a dimensionless number, which can be used to compare the pressure volatility under different data sets or conditions, eliminating the influence of data units and the size of the average value on the volatility evaluation, making the comparison of volatility between different data sets more objective and accurate, so as to timely detect abnormal changes in the internal pressure volatility of the system and provide an important basis for preventing system failures and ensuring safe operation.

[0112] Refer to Figure 7 , and the specific step S5 includes the following sub-steps:

[0113] S51. Collect the molten salt flow information of the molten salt energy storage system during operation at regular intervals, continuously collect 2M times, and obtain 2M molten salt flow parameters;

[0114] S52. Calculate the ratio of the difference between the molten salt flow parameters and the time difference between adjacent time points respectively, obtain M molten salt flow change rates, and label the M molten salt flow change rates as R1, R2,..., RM;

[0115] S53. Calculate the standard deviation of the M molten salt flow change rates through the formula , that is, the flow change rate coefficient of the molten salt energy storage system . .

[0116] In actual operation, the flow sensor is used to collect the molten salt flow information of the molten salt energy storage system, continuously collect 2M times, combine the molten salt flow information at adjacent time points to form M groups of adjacent time point flow information, calculate the ratio of the difference between the molten salt flow parameters and the time difference between adjacent time points respectively, and obtain M molten salt flow change rates, that is, the increase or decrease of the flow rate per unit time. Calculate the standard deviation of the M molten salt flow change rates through the formula, that is, the flow change rate coefficient of the molten salt energy storage system, which reflects the degree of dispersion of the molten salt flow change rate, that is, the stability and consistency of the flow change; if the coefficient is small, it means that the flow change is relatively stable; if the coefficient is large, it may indicate that there are large energy fluctuations or unstable factors inside the system, and it is necessary to further optimize the system control strategy or check the equipment status.

[0117] Refer to Figure 8, the specific step S6 includes the following sub-steps:

[0118] S61. Extract the pressure variation coefficient and the flow rate change rate coefficient ;

[0119] S62. Calculate the working safety parameter GA of the molten salt energy storage system through the formula where u1 is the influence factor of the pressure variation coefficient and u2 is the influence factor of the flow rate change rate coefficient ;

[0120] S63. Conduct time series analysis on the working safety parameter to obtain the change trend curve of the working safety parameter, and obtain the change rate of the working safety parameter according to the change trend curve;

[0121] S64. Based on the change rate of the working safety parameter, set the standard change range of the working safety parameter of the molten salt energy storage system, determine whether there is an abnormal device in the molten salt energy storage system, and process the abnormal device.

[0122] In practical applications, comprehensively considering the pressure variation coefficient and the flow rate change rate coefficient , the working safety parameter GA of the molten salt energy storage system is obtained. This working safety parameter provides a quantitative index for comprehensively evaluating the working safety of the system. Conducting time series analysis on the working safety parameter can obtain the change trend curve of the working safety parameter, and calculate the change rate of the working safety parameter according to the change trend curve. Based on historical data and system characteristics, set the standard change range of the working safety parameter of the molten salt energy storage system. When the actual change rate of the working safety parameter exceeds this standard range, the system determines that there is an abnormal device, and takes corresponding treatment measures, which can minimize the impact of the abnormal device on the system, realize the intelligent monitoring and abnormal management of the molten salt energy storage system, and improve the reliability and stability of the system.

[0123] Referring to Figure 9 , the specific step S64 includes the following sub-steps:

[0124] S641. Extract the change rate of the working safety parameter and the standard change range of the working safety parameter of the molten salt energy storage system. When the change rate of the working safety parameter exceeds the standard change range, it is determined that there is an abnormal device in the molten salt energy storage system, and the abnormal device cannot be restored by repair;

[0125] S642. Isolate the abnormal device, obtain the type parameters and specification parameters of the abnormal device, and screen out the devices that are consistent with the type parameters and specification parameters as the standard replacement devices;

[0126] Control the flow rate and direction of molten salt in the abnormal device, transfer the thermal energy of the abnormal device to the standard replacement device, and connect the standard replacement device that has completed the thermal energy transfer to the molten salt energy storage system.

[0127] In actual operation, when the change rate of the working safety parameters exceeds the preset standard change range, the system determines that there is an irreparable abnormal device and immediately isolates it to prevent the abnormal device from causing further impact or damage to the entire system. Obtain the type parameters and specification parameters of the abnormal device so as to accurately find the standard replacement device that matches it, ensure the compatibility and performance of the replacement device are the same as those of the original device, use a heat exchanger to connect the molten salt in the abnormal device with the standard replacement device, and by controlling the flow rate and direction of the molten salt, efficiently and safely transfer the thermal energy in the abnormal device to the standard replacement device, thereby minimizing the thermal energy loss or system interruption time caused by equipment replacement. After completing the thermal energy transfer, connect the preheated and ready standard replacement device to the molten salt energy storage system, thereby restoring the integrity and normal operating ability of the system.

[0128] Refer to Figure 10 , a data analysis and management system based on molten salt energy storage, including a temperature information module, a liquid level information module, an efficiency analysis module, a pressure information module, a flow rate information module, and a safety analysis module. First, the temperature information module obtains the internal temperature information of the molten salt energy storage system during operation, processes and analyzes the internal temperature information to obtain the heat exchange rate information of the molten salt energy storage system; then uses the liquid level information module to obtain the molten salt liquid level information of the molten salt energy storage system during operation, processes and analyzes the molten salt liquid level information to obtain the charge and discharge energy rate information of the molten salt energy storage system; then through the efficiency analysis module, comprehensively analyzes the heat exchange rate information and the charge and discharge energy rate information to obtain the working efficiency parameters of the molten salt energy storage system, and judges whether there is a faulty device in the molten salt energy storage system according to the working efficiency parameters and the working efficiency threshold, and processes the faulty device; then the pressure information module obtains the internal pressure information of the molten salt energy storage system during operation, processes and analyzes the internal pressure information to obtain the pressure variation coefficient of the molten salt energy storage system; then uses the flow rate information module to obtain the molten salt flow rate information of the molten salt energy storage system during operation, processes and analyzes the molten salt flow rate information to obtain the flow rate change rate coefficient of the molten salt energy storage system; finally, through the safety analysis module, comprehensively evaluates the pressure variation coefficient and the flow rate change rate coefficient to obtain the working safety parameters of the molten salt energy storage system, and judges whether there is an abnormal device in the molten salt energy storage system according to the working safety parameters, and processes the abnormal device.

[0129] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A method for analyzing and managing molten salt energy storage data, characterized in that: The following steps are involved: Acquire internal temperature information of the molten salt energy storage system during operation, process and analyze the internal temperature information, and obtain heat exchange rate information of the molten salt energy storage system; Obtaining molten salt liquid level information of the molten salt energy storage system during operation, processing and analyzing the molten salt liquid level information, and obtaining charging and discharging rate information of the molten salt energy storage system; Comprehensively analyzing the heat exchange rate information and the charge and discharge rate information to obtain the working efficiency parameters of the molten salt energy storage system, judging whether there is a faulty device in the molten salt energy storage system according to the working efficiency parameters and the working efficiency threshold, and handling the faulty device; Acquire internal pressure information of the molten salt energy storage system during operation, process and analyze the internal pressure information, and obtain a pressure variation coefficient of the molten salt energy storage system; Obtaining molten salt flow information of the molten salt energy storage system during operation, processing and analyzing the molten salt flow information, and obtaining a flow change rate coefficient of the molten salt energy storage system; Comprehensively evaluate the pressure variation coefficient and the flow rate change coefficient to obtain the working safety parameters of the molten salt energy storage system, determine whether there are abnormal devices in the molten salt energy storage system according to the working safety parameters, and handle the abnormal devices; Extract the pressure coefficient of variation and flow rate coefficient ; By formula The working safety parameter GA of the molten salt energy storage system is calculated, where u1 is the pressure variation coefficient The influencing factor is u2, which is the flow rate coefficient. Impact factor; Performing time series analysis on the work safety parameters to obtain a change trend curve of the work safety parameters, and obtaining a change rate of the work safety parameters according to the change trend curve; Based on the working safety parameter change rate, a standard change range of the working safety parameters of the molten salt energy storage system is set to determine whether there are abnormal devices in the molten salt energy storage system, and the abnormal devices are processed.

2. A method for analyzing and managing molten salt energy storage data according to claim 1, characterized in that: The steps of obtaining internal temperature information of the molten salt energy storage system during operation, processing and analyzing the internal temperature information, and obtaining heat exchange rate information of the molten salt energy storage system are specifically as follows: The internal temperature information includes the average temperature w1 of the hot side fluid of the high-temperature molten salt and the average temperature w2 of the cold side fluid of the working medium, which can be expressed by the formula Calculate the heat transfer temperature difference of the molten salt energy storage system ; Obtain the heat transfer coefficient CX and heat transfer area CM of the heat exchanger in the molten salt energy storage system through the formula The heat exchange rate information Q of the molten salt energy storage system is calculated.

3. A method for analyzing and managing molten salt energy storage data according to claim 2, characterized in that: The steps of obtaining molten salt liquid level information of the molten salt energy storage system during operation, processing and analyzing the molten salt liquid level information, and obtaining the charging and discharging rate information of the molten salt energy storage system are specifically as follows: The molten salt liquid level information includes the first liquid level information y1 and the second liquid level information y2 at adjacent time points, which can be expressed by the formula Calculate the liquid level difference at adjacent time points ; Based on the liquid level difference at adjacent time points , through the formula Calculate the liquid level change rate Y at adjacent time points, where t1 is the time point corresponding to the first liquid level information, and t2 is the time point corresponding to the second liquid level information; When the liquid level change rate Y is positive, the molten salt energy storage system is charging. At this time, the charging rate of the molten salt energy storage system is proportional to the liquid level change rate. The charging rate information C1 of the molten salt energy storage system is calculated, where is the scale factor and is greater than zero; When the liquid level change rate Y is negative, the molten salt energy storage system is discharging. At this time, the energy release rate of the molten salt energy storage system is proportional to the absolute value of the liquid level change rate. The energy release rate information C2 of the molten salt energy storage system is calculated, where is the scaling factor and is greater than zero.

4. A method for analyzing and managing molten salt energy storage data according to claim 3, characterized in that: The steps of comprehensively analyzing the heat exchange rate information and the charge and discharge rate information to obtain the working efficiency parameters of the molten salt energy storage system, and judging whether there is a faulty device in the molten salt energy storage system and processing it according to the working efficiency parameters and the working efficiency threshold are specifically as follows: Extract the heat exchange rate information Q and charging rate information C1, through the formula Calculate the working efficiency parameters of the molten salt energy storage system , where m1 is the weight of the heat exchange rate information Q, and m2 is the weight of the charging rate information C1; Extract the heat exchange rate information Q and energy release rate information C2, through the formula Calculate the working efficiency parameters of the molten salt energy storage system , where n1 is the weight of the heat exchange rate information Q, and n2 is the weight of the energy release rate information C2; Acquire external environment information of the molten salt energy storage system, wherein the external environment information includes environment temperature information WD, environment wind speed information FS and environment wind direction information FX; By formula The influence of environmental parameters on the working efficiency of the molten salt energy storage system is calculated and obtained, where n1, n2 and n3 are proportional factors and are greater than zero; Obtaining a standard working efficiency parameter of the molten salt energy storage system, applying the working efficiency impact variation to the standard working efficiency parameter to obtain a corrected working efficiency parameter, and setting the corrected working efficiency parameter as a working efficiency threshold of the molten salt energy storage system; Based on the working efficiency parameter and the working efficiency threshold, it is determined whether there is a faulty device in the molten salt energy storage system, and the faulty device is processed.

5. A method for analyzing and managing molten salt energy storage data according to claim 4, characterized in that: Based on the working efficiency parameter and the working efficiency threshold, the steps of judging whether there is a faulty device in the molten salt energy storage system and processing the faulty device are specifically as follows: Based on the work efficiency parameter and the work efficiency threshold, when the work efficiency parameter does not reach the work efficiency threshold, it is determined that there is a faulty device in the molten salt energy storage system, and the faulty device can be restored by repair; Obtain the faulty equipment maintenance information, which includes the maintenance difficulty information XN, the maintenance personnel status information RZ and the parts adaptability information JS. The repair time WS of the faulty equipment is calculated, where l1 is the weight of the repair difficulty information XN, l2 is the maintenance personnel status information RZ, and l3 is the weight of the parts fit information JS; Obtaining the time it takes for a normal device to reach a standard working state, and when the time it takes for the faulty device to be repaired is less than or equal to the time it takes for the normal device to reach a standard working state, repairing the faulty device; When the repair time of the faulty equipment is longer than the time for the normal equipment to reach the standard working state, the faulty equipment is replaced with the normal equipment.

6. A method for analyzing and managing molten salt energy storage data according to claim 5, characterized in that: The steps of obtaining internal pressure information of the molten salt energy storage system during operation, processing and analyzing the internal pressure information, and obtaining the pressure variation coefficient of the molten salt energy storage system are specifically as follows: The internal pressure information of the molten salt energy storage system during operation is collected at regular intervals, and the collection is continued N times to obtain N internal pressure parameters, and the N internal pressure parameters are marked as L1, L2, ..., LN respectively; By formula Calculate the average value of N internal pressure parameters ; By formula Calculate the standard deviation of N internal pressure parameters ; By formula Calculate the pressure variation coefficient of the molten salt energy storage system .

7. A method for analyzing and managing molten salt energy storage data according to claim 6, characterized in that: The steps of obtaining molten salt flow information of the molten salt energy storage system during operation, processing and analyzing the molten salt flow information, and obtaining the flow rate change coefficient of the molten salt energy storage system are specifically as follows: The molten salt flow information of the molten salt energy storage system during operation is collected at regular intervals, and the information is collected 2M times in succession to obtain 2M molten salt flow parameters; The ratios of the molten salt flow parameter difference and the time difference between adjacent time points are calculated respectively to obtain M molten salt flow change rates, and the M molten salt flow change rates are marked as R1, R2, ..., RM respectively; By formula Calculate the standard deviation of the M molten salt flow rate change rates , that is, the flow rate change coefficient of the molten salt energy storage system .

8. A method for analyzing and managing molten salt energy storage data according to claim 7, characterized in that: Based on the working safety parameter change rate, the standard change range of the working safety parameters of the molten salt energy storage system is set, and it is determined whether there are abnormal devices in the molten salt energy storage system, and the steps of processing the abnormal devices are specifically as follows: Extracting the change rate of the working safety parameter and the standard change range of the working safety parameter of the molten salt energy storage system. When the change rate of the working safety parameter exceeds the standard change range, it is determined that there is an abnormal device in the molten salt energy storage system, and the abnormal device cannot be restored by maintenance; Isolate the abnormal device, obtain type parameters and specification parameters of the abnormal device, and select devices that are consistent with the type parameters and specification parameters as standard replacement devices; The molten salt in the abnormal device is connected to the standard replacement device through a heat exchanger, the flow speed and direction of the molten salt in the abnormal device are controlled, the heat energy of the abnormal device is transferred to the standard replacement device, and the standard replacement device that completes the heat energy transfer is connected to the molten salt energy storage system.

9. A molten salt energy storage data analysis and management system, characterized in that: A method for analyzing and managing molten salt energy storage data applicable to any one of claims 1 to 8, comprising: The temperature information module is used to obtain the internal temperature information of the molten salt energy storage system during operation, process and analyze the internal temperature information, and obtain the heat exchange rate information of the molten salt energy storage system; A liquid level information module is used to obtain the molten salt liquid level information of the molten salt energy storage system during operation, process and analyze the molten salt liquid level information, and obtain the charging and discharging rate information of the molten salt energy storage system; an efficiency analysis module, for comprehensively analyzing the heat exchange rate information and the charge and discharge rate information to obtain the working efficiency parameters of the molten salt energy storage system, and judging whether there is a faulty device in the molten salt energy storage system according to the working efficiency parameters and the working efficiency threshold, and processing the faulty device; A pressure information module is used to obtain internal pressure information of the molten salt energy storage system during operation, process and analyze the internal pressure information, and obtain a pressure variation coefficient of the molten salt energy storage system; A flow information module is used to obtain the molten salt flow information of the molten salt energy storage system during operation, process and analyze the molten salt flow information, and obtain the flow change rate coefficient of the molten salt energy storage system; The safety analysis module is used to comprehensively evaluate the pressure variation coefficient and the flow rate change coefficient to obtain the working safety parameters of the molten salt energy storage system, determine whether there are abnormal devices in the molten salt energy storage system according to the working safety parameters, and handle the abnormal devices.

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