Adiabatic compressed air energy storage scheduling method, device and equipment considering constant pressure-sliding pressure mixed operation and storage medium

Abstract

The invention provides an adiabatic compressed air energy storage scheduling method, device and equipment considering constant pressure-sliding pressure mixed operation and a storage medium, relates to the field of compressed air energy storage, and aims to improve the economic benefit and operation efficiency of an adiabatic compressed air energy storage system in a complex operation mode. The method comprises the steps that constraint conditions and an objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure mixed operation are established, the constraint conditions comprise gas storage constraint, compression side constraint, expansion side constraint and operation constraint, and the objective function aims at maximizing the total operation income of the adiabatic compressed air energy storage system in a scheduling period; by introducing an auxiliary continuous variable, converting a nonlinear constraint in the constraint condition into a linear constraint to obtain a target constraint; and based on the target constraint and the target function, establishing an adiabatic compressed air energy storage scheduling model, and solving the model to obtain a scheduling plan of the adiabatic compressed air energy storage system under the constant pressure-sliding pressure mixed operation.

Description

Technical Field

[0001] This application relates to the field of compressed air energy storage, and more specifically, to a method, apparatus, equipment, and storage medium for scheduling adiabatic compressed air energy storage that considers constant pressure-sliding pressure hybrid operation. Background Technology

[0002] Adiabatic compressed air energy storage is a large-scale physical energy storage technology that compresses and stores air by consuming electrical energy. When needed, the high-pressure air is released to drive a turbine to generate electricity. "Adiabatic" means that the heat generated during the compression process is collected and stored for subsequent power generation to improve system efficiency.

[0003] Adiabatic compressed air energy storage (ACAS) is an emerging physical energy storage technology suitable for large-scale, long-term electricity consumption and has seen rapid development in China. Early ACAS systems primarily used salt caverns as storage facilities, which had strict location requirements and limited construction flexibility. Therefore, artificial chamber storage solutions were gradually adopted. However, artificial chamber storage facilities have a wide pressure range, and due to limitations in equipment manufacturing processes, the core equipment of ACAS cannot operate efficiently across this wide pressure range. Therefore, a constant-pressure / sliding-pressure hybrid operation mode was proposed.

[0004] Compressor units and air turbine units operating under a constant-pressure / sliding-pressure hybrid mode have both constant-pressure and sliding-pressure operating modes at different gas storage pressures. However, currently, there is a lack of efficient and economical optimization scheduling technology for adiabatic compressed air energy storage operating under a constant-pressure / sliding-pressure hybrid mode. Therefore, how to provide an efficient and economical optimization scheduling technology for adiabatic compressed air energy storage operating under a constant-pressure / sliding-pressure hybrid mode is an urgent problem to be solved. Summary of the Invention

[0005] The present application provides a method, apparatus, equipment, and storage medium for scheduling adiabatic compressed air energy storage that considers constant pressure-sliding pressure hybrid operation, aiming to overcome the above-mentioned problems or at least partially solve them.

[0006] The first aspect of this application provides a method for scheduling adiabatic compressed air energy storage considering constant pressure-sliding pressure hybrid operation, the method comprising: Establish the constraints and objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The constraints include: gas storage constraints, compression side constraints, expansion side constraints and operation constraints. The objective function aims to maximize the total operating benefits of the adiabatic compressed air energy storage system within the scheduling cycle. By introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints, thus obtaining the target constraints; Based on the objective constraints and the objective function, an adiabatic compressed air energy storage scheduling model is established. The adiabatic compressed air energy storage scheduling model and input data are loaded into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The input data includes: predicted electricity price data and equipment physical parameters. The scheduling plan refers to the start-up and shutdown plan of the compression side and expansion side, the power consumption plan of the compression side and the power generation plan of the expansion side for each future time period.

[0007] In one optional implementation, the gas storage constraints include: a formula for calculating gas storage pressure changes, a formula for distinguishing between constant pressure and sliding pressure operating states, and upper and lower limit constraints for gas storage pressure; establishing gas storage constraints for the adiabatic compressed air energy storage system under constant pressure and sliding pressure hybrid operation includes: Establish the formula for calculating the pressure change of the gas storage facility: ; in, This represents the gas pressure in the gas storage tank at time t; and Let represent the air mass flow rates on the compression and expansion sides at time t, respectively; and These are the wall temperature and volume of the gas storage facility, respectively. is the gas constant of air; The interval between two moments; Establish the formula for distinguishing between constant pressure and sliding pressure operating states; ; ; in, This is the minimum output air pressure of the compressor unit, used to define the operating mode of the adiabatic compressed air energy storage system during charging. This is the maximum intake pressure of the air turbine assembly, used to define the operating mode of the adiabatic compressed air energy storage system during discharge. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is charging at time t. A value of 1 indicates charging, and a value of 0 indicates not charging. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is discharging at time t. A value of 1 indicates discharging, and a value of 0 indicates no discharging. This indicates whether the thermal compressed air energy storage system operates in constant pressure mode when charging. A value of 1 indicates charging in constant pressure mode, and a value of 0 indicates charging in non-constant pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in sliding pressure mode when charging. A value of 1 indicates charging in sliding pressure mode, while a value of 0 indicates charging in non-sliding pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in constant pressure mode when discharging. A value of 1 indicates that it discharges in constant pressure mode, and a value of 0 indicates that it does not discharge in constant pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in sliding pressure mode when discharging. A value of 1 indicates discharging in sliding pressure mode, and a value of 0 indicates discharging not in sliding pressure mode. M1 is a normal number, and its value is selected as... , This is the maximum operating pressure of the gas storage facility; Establish upper and lower pressure limits for the gas storage facility: ; in, and These are the minimum and maximum operating gas pressures of the gas storage facility, respectively.

[0008] In one optional implementation, the compression-side constraints include: upper and lower limits of charging power, a formula for calculating the mass flow rate of compressed air, a formula for the operating characteristics under constant pressure operation mode, and a formula for the operating characteristics under sliding pressure operation mode; establishing the compression-side constraints of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation includes: Establish the upper and lower limits of the charging power constraints: ; in, The charging power of the adiabatic compressed air energy storage system at time t; and These are the upper and lower power limits of the adiabatic compressed air energy storage system when it is charged in constant pressure mode. and These are the upper and lower power limits of the adiabatic compressed air energy storage system when it is charged in sliding pressure mode; Establish the formula for calculating the mass flow rate of the compressed air: ; in, and All of these are introduced auxiliary variables, representing the air mass flow rate on the compression side at time t when the adiabatic compressed air energy storage system is charged in constant pressure and sliding pressure modes, respectively. Establish the operating characteristic formula under the constant pressure operation mode on the compression side: ; in, and All are fitting coefficients, used to fit the functional relationship between the air mass flow rate on the compression side and the charging power when the adiabatic compressed air energy storage system is charged in constant pressure mode; Establish the working characteristic formula for the compression-side sliding pressure operation mode: ; ; ; in, Let i be the i-th element in an ascending sorted sequence of gas pressure values ​​for a gas storage facility. This indicates that the gas pressure in the gas storage tank is constant. At that time, the upper limit of the power of the adiabatic compressed air energy storage system when charging in sliding pressure mode; and These are all auxiliary variables used to construct a piecewise linear function of charging power with respect to gas storage pressure under sliding pressure operation mode; and All are fitting coefficients, used to fit the functional relationship between the lower limit of charging power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system is charged in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the air mass flow rate on the compression side and the charging power when the adiabatic compressed air energy storage system is charged in sliding pressure mode.

[0009] In one optional implementation, the expansion-side constraints include: upper and lower limits of discharge power constraints, a formula for calculating the expansion-side air mass flow rate, a formula for the operating characteristics under constant-pressure operation mode on the expansion side, and a formula for the operating characteristics under sliding-pressure operation mode on the expansion side; establishing the expansion-side constraints of the adiabatic compressed air energy storage system under constant-pressure-sliding-pressure hybrid operation includes: Establish the upper and lower limits of the discharge power constraints: ; in, Let be the discharge power of the adiabatic compressed air energy storage system at time t; and These are the upper and lower limits of the power output of the adiabatic compressed air energy storage system when discharging in constant pressure mode; and These are the upper and lower power limits of the adiabatic compressed air energy storage system when discharging in sliding pressure mode, respectively. Establish the formula for calculating the air mass flow rate on the expansion side: ; in, and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in constant pressure mode; Establish the operating characteristic formula under the constant pressure operation mode on the expansion side: ; in, and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in constant pressure mode; Establish the working characteristic formula for the expansion-side sliding pressure operation mode: ; ; ; in, and All are fitting coefficients, used to fit the functional relationship between the upper limit of the discharge power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system discharges in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the lower limit of the discharge power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system discharges in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in sliding pressure mode.

[0010] In one optional implementation, the operational constraints include: mutual exclusion constraints between charge and discharge states; and operational constraints for establishing the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation, including: ; in, This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is charging at time t. A value of 1 indicates charging, and a value of 0 indicates not charging. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is discharging at time t. A value of 1 indicates discharging, and a value of 0 indicates no discharging.

[0011] In one optional implementation, the objective function for the adiabatic compressed air energy storage system under constant-pressure-sliding-pressure hybrid operation includes: The objective function is established based on optimal economic efficiency: ; in, Let t be the electricity price at time t.

[0012] In one optional implementation, by introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints to obtain the target constraints, including: Convert the upper and lower limits of charging power in the compression-side constraints into linear constraints: ; Convert the formula for calculating the air mass flow rate on the compression side in the compression-side constraint into a linear constraint: ; Convert the upper and lower limits of discharge power in the expansion-side constraints into linear constraints: ; Convert the formula for calculating the air mass flow rate on the expansion side in the expansion side constraint to a linear constraint: ; in, , , , , , , and All of these are introduced auxiliary continuous variables; M2, M3, M4, and M5 are all positive constants. , , , .

[0013] A second aspect of this application provides an adiabatic compressed air energy storage and scheduling device that considers constant pressure-sliding pressure hybrid operation, comprising: The first module is used to establish the constraints and objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The constraints include: gas storage constraints, compression side constraints, expansion side constraints and operation constraints. The objective function aims to maximize the total operating benefits of the adiabatic compressed air energy storage system within the scheduling cycle. The transformation module is used to transform the nonlinear constraints in the constraints into linear constraints by introducing auxiliary continuous variables, thereby obtaining the target constraints; The second module is used to establish an adiabatic compressed air energy storage scheduling model based on the target constraints and the target function. The solver module is used to load the adiabatic compressed air energy storage scheduling model and input data into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The input data includes: predicted electricity price data and equipment physical parameters. The scheduling plan refers to the start-up and shutdown plan of the compression side and expansion side, the power consumption plan of the compression side and the power generation plan of the expansion side for each future time period.

[0014] A third aspect of this application provides an electronic device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation of the first aspect of this application.

[0015] A fourth aspect of this application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the adiabatic compressed air energy storage scheduling method considering constant-pressure-sliding-pressure hybrid operation of the first aspect of this application.

[0016] In the adiabatic compressed air energy storage scheduling method considering constant-pressure and sliding-pressure hybrid operation provided in this application, constraints and objective functions of the adiabatic compressed air energy storage system under constant-pressure and sliding-pressure hybrid operation are established. The constraints include: gas storage constraints, compression-side constraints, expansion-side constraints, and operational constraints. The objective function aims to maximize the total operational benefits of the adiabatic compressed air energy storage system within the scheduling cycle. By introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints, resulting in the objective constraints. Based on the objective constraints and objective function, an adiabatic compressed air energy storage scheduling model is established. The adiabatic compressed air energy storage scheduling model and input data are loaded into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant-pressure and sliding-pressure hybrid operation. This application transforms the nonlinear constraints in the constraints into linear constraints by introducing auxiliary continuous variables, which linearizes complex nonlinear problems and significantly improves the solution efficiency. The scheduling model established based on the transformed objective constraints and objective function can obtain the economically optimal scheduling plan in a short time, helping to improve the economic benefits and operational efficiency of the energy storage system under complex operating modes. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an adiabatic compressed air energy storage system with constant pressure-sliding pressure hybrid operation according to this application; Figure 2 This is a flowchart of the steps of an adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation proposed in an embodiment of this application; Figure 3This is a schematic diagram of the charging power range of an adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation proposed in an embodiment of this application; Figure 4 This is a schematic diagram of the discharge power range of an adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation proposed in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an adiabatic compressed air energy storage and scheduling device considering constant pressure-sliding pressure hybrid operation according to an embodiment of this application; Figure 6 This is a schematic diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the accompanying drawings, the size of constituent elements, the thickness of layers, or areas may sometimes be exaggerated for clarity. Therefore, any implementation of this disclosure is not necessarily limited to the dimensions shown in the drawings, and the shapes and sizes of the components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and any implementation of this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0021] For adiabatic compressed air energy storage (A-CAES), compressed air energy storage works as follows: During periods of low electricity demand (low electricity prices) and power surplus, an electric motor drives a compressor to compress and store air; during periods of high electricity demand (high electricity prices) and power shortage, the high-pressure air is released to drive an expander (turbine) to generate electricity. The adiabatic aspect involves capturing and storing the heat generated during compression (e.g., in a thermal storage tank). When the air needs to expand to generate electricity, this stored heat is reused to reheat the high-pressure air, allowing it to expand more efficiently in the turbine. The system employs a constant-pressure / sliding-pressure hybrid operation: During different stages of energy storage (charging) or energy release (discharging), the system intelligently switches between constant-pressure and sliding-pressure modes to achieve higher overall efficiency and better economics throughout the cycle.

[0022] Figure 1 This is a schematic diagram of the structure of an adiabatic compressed air energy storage system with constant pressure-sliding pressure hybrid operation according to this application, as shown below. Figure 1As shown, the adiabatic compressed air energy storage system operating under a constant-pressure-sliding-pressure hybrid system mainly consists of the following components: a compressor unit (compression side / charging), an air turbine unit (expansion side / power generation), a thermal storage system, an air storage tank, and a throttling valve. The compressor unit is responsible for consuming electrical energy to compress air, specifically including: an electric motor M (consuming electrical energy to drive the compressor unit), a low-pressure compressor (LPC), and a high-pressure compressor (HPC). The air turbine unit is responsible for releasing high-pressure air to drive turbine equipment (such as turbines) to generate electricity, specifically including: a high-pressure expansion turbine (HPT), a low-pressure expansion turbine (LPT), and a generator (G). The thermal storage system is responsible for insulation, i.e., storing heat during compression and heating during expansion, specifically including: compression-side heat exchangers (HEX1, HEX2), expansion-side heat exchangers (HEX3, HEX4), a high-temperature thermal storage tank, a low-temperature thermal storage tank, and a thermal storage medium pump (driving the thermal storage medium to circulate between the thermal storage tank and the heat exchangers). The air storage tank: used to store high-pressure air, is the energy carrier of the system. Throttling valve: It is a key component for achieving constant pressure-sliding pressure mixed operation. There is one throttle valve on the compression side and one on the expansion side, which is used to throttle and reduce the pressure of air when needed.

[0023] The entire system follows the adiabatic principle of "storing heat during energy storage and heating during energy release".

[0024] The energy storage process on the compression side is as follows: The electric motor M consumes electrical energy to drive the compressor unit; ambient air is drawn in and first passes through the low-pressure compressor LPC to obtain high-temperature compressed air, which then enters the heat exchanger HEX1 to transfer heat energy to the heat storage medium from the low-temperature tank. After the compressed air is cooled, it enters the high-pressure compressor HPC to obtain high-temperature and high-pressure air, which then enters the heat exchanger HEX2 for further cooling, transferring its remaining heat energy to the heat storage medium from the low-temperature tank. The heated heat storage medium is pumped into the high-temperature heat storage tank for storage, completing the heat energy recovery. At the same time, after two stages of cooling, the high-pressure air close to the ambient temperature is sent to the gas storage tank for storage.

[0025] The energy release process on the expansion side is as follows: High-pressure air extracted from the gas storage tank enters heat exchanger HEX3 and heat exchanger HEX4 in sequence, and is heated by the heat storage medium from the high-temperature heat storage tank. The heated high-temperature and high-pressure air then enters the high-pressure expansion turbine HPT and the low-pressure expansion turbine LPT in sequence to expand and do work, driving the generator (G) to generate electricity.

[0026] Constant pressure-sliding pressure mode on the compression side: Before the cooled high-pressure air is sent to the gas storage tank, the storage pressure of the gas storage tank is compared with the minimum outlet pressure of the compressor unit. When the storage pressure of the gas storage tank is lower than the minimum outlet pressure of the compressor unit, the compressor unit always outputs compressed air at the minimum outlet pressure. Then, the compressed air is depressurized through the compression-side throttle valve to the storage pressure of the gas storage tank and stored there. In this case, the compression side operates in constant pressure mode. When the storage pressure of the gas storage tank is higher than the minimum outlet pressure of the compressor unit, the compression-side throttle valve does not operate, and the outlet pressure of the compressor unit always matches the storage pressure of the gas storage tank. In this case, the compression side operates in sliding pressure mode.

[0027] Constant pressure-sliding pressure mode on the expansion side: Before the high-pressure air is released, the gas storage pressure of the gas storage tank is compared with the maximum inlet pressure of the air turbine group. When the gas storage pressure of the gas storage tank is higher than the maximum inlet pressure of the air turbine group, the high-pressure air output from the gas storage tank will be reduced to the maximum inlet pressure of the air turbine group through the expansion side throttle valve, and then enter the turbine to expand and do work. At this time, the expansion side operates in constant pressure mode. When the gas storage pressure of the gas storage tank is lower than the maximum inlet pressure of the air turbine group, the expansion side throttle valve does not work, and the inlet pressure of the air turbine group always matches the gas storage pressure of the gas storage tank. At this time, the expansion side operates in sliding pressure mode.

[0028] Reference Figure 2 , Figure 2 This is a flowchart illustrating the steps of an adiabatic compressed air energy storage scheduling method considering constant-pressure-sliding-pressure hybrid operation, as proposed in an embodiment of this application. Figure 2 As shown, specifically, the method includes the following steps S21~S24: Step S21: Establish the constraints and objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The constraints include: gas storage constraints, compression side constraints, expansion side constraints and operation constraints. The objective function aims to maximize the total operating benefits of the adiabatic compressed air energy storage system within the scheduling cycle.

[0029] In this embodiment, constraints and objective functions are established for the adiabatic compressed air energy storage system operating under a constant-pressure-sliding-pressure hybrid mode. The constraints cover changes in the gas storage tank pressure, the operating characteristics of the compression and expansion sides, and the mutual exclusion logic of charging and discharging. The objective function focuses on maximizing the total operating revenue within the scheduling cycle. Gas storage tank constraints ensure the model accurately tracks the system state and operating modes at different times, always operating within a safe pressure range. Compression-side constraints ensure the charging process is accurately simulated, with all operations performed within the safe and efficient operating range of the compressor unit. Expansion-side constraints ensure the discharging process is accurately simulated, with the turbine always operating within its safe and technically permissible parameter range. Operating constraints define system-level collaborative operating rules to ensure overall stable and reliable operation. The objective function drives the scheduling scheme towards maximizing revenue, i.e., minimizing total operating costs, which can generate more electricity sales revenue through lower charging electricity costs. This application establishes the constraints and objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation, comprehensively and accurately characterizing the operating characteristics and objectives of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation mode, providing a solid foundation for scientific and rational scheduling.

[0030] In one optional implementation, the gas storage constraints include: a formula for calculating gas storage pressure changes, a formula for distinguishing between constant pressure and sliding pressure operating states, and upper and lower limit constraints for gas storage pressure; establishing gas storage constraints for the adiabatic compressed air energy storage system under constant pressure and sliding pressure hybrid operation includes: Establish the formula for calculating the pressure change of the gas storage facility: (1) in, This represents the gas pressure in the gas storage tank at time t; and Let represent the air mass flow rates on the compression and expansion sides at time t, respectively; and These are the wall temperature and volume of the gas storage facility, respectively. is the gas constant of air; The interval between two moments; Establish the formula for distinguishing between constant pressure and sliding pressure operating states; (2) (3) in, This is the minimum output air pressure of the compressor unit, used to define the operating mode of the adiabatic compressed air energy storage system during charging. If the air pressure in the storage tank is higher than... The adiabatic compressed air energy storage system charges in sliding pressure mode. If the air pressure in the storage tank is lower than... Charged in constant voltage mode; This is the maximum intake pressure of the air turbine assembly, used to define the operating mode of the adiabatic compressed air energy storage system during discharge. If the gas pressure in the storage tank is lower than... The adiabatic compressed air energy storage system discharges in sliding pressure mode. If the gas pressure in the storage tank is higher than... Discharge in constant voltage mode; This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is charging at time t. A value of 1 indicates charging, and a value of 0 indicates not charging. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is discharging at time t. A value of 1 indicates discharging, and a value of 0 indicates no discharging. This indicates whether the thermal compressed air energy storage system operates in constant pressure mode when charging. A value of 1 indicates charging in constant pressure mode, and a value of 0 indicates charging in non-constant pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in sliding pressure mode when charging. A value of 1 indicates charging in sliding pressure mode, while a value of 0 indicates charging in non-sliding pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in constant pressure mode when discharging. A value of 1 indicates that it discharges in constant pressure mode, and a value of 0 indicates that it does not discharge in constant pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in sliding pressure mode when discharging. A value of 1 indicates discharging in sliding pressure mode, and a value of 0 indicates discharging not in sliding pressure mode. M1 is a normal number, and its value is selected as... , This is the maximum operating pressure of the gas storage facility; Establish upper and lower pressure limits for the gas storage facility: (4) in, and These are the minimum and maximum operating gas pressures of the gas storage facility, respectively.

[0031] In this embodiment, the adiabatic compressed air energy storage system operating in a constant-pressure / sliding-pressure hybrid mode needs to determine its specific operating mode based on the gas pressure in the gas storage tank. Therefore, it is first necessary to calculate the changes in the gas pressure in the gas storage tank during the charging and discharging process of the adiabatic compressed air energy storage system, and then determine the specific operating mode (constant-pressure mode / sliding-pressure mode) of the adiabatic compressed air energy storage system at each moment based on the gas pressure in the gas storage tank. In addition, to ensure the safe and stable operation of the adiabatic compressed air energy storage system, its gas pressure in the gas storage tank needs to be kept within the operating range at all times. Therefore, the gas storage tank constraints specifically include: the gas storage tank pressure change calculation formula, the constant-pressure / sliding-pressure operating state differentiation formula, and the upper and lower limit constraints of the gas storage tank pressure; establishing the gas storage tank constraints of the adiabatic compressed air energy storage system under constant-pressure / sliding-pressure hybrid operation.

[0032] In this embodiment, when the adiabatic compressed air energy storage system is charging / discharging, air enters / leaves the gas storage tank, and the gas pressure in the gas storage tank can be calculated according to equation (1). The operating mode of the adiabatic compressed air energy storage system, which operates in a constant-pressure / sliding-pressure hybrid mode, is determined based on the range of gas pressure in the gas storage tank. According to equations (2) and (3), it can be determined whether the compression side and expansion side of the adiabatic compressed air energy storage system are operating in constant-pressure / sliding-pressure mode, respectively. Under the constraint of equation (2), when the adiabatic compressed air energy storage system is not charging, , When the adiabatic compressed air energy storage system is charging, At this point, the specific operating mode of the adiabatic compressed air energy storage system during charging is determined based on the gas pressure in the gas storage tank. If the gas pressure in the gas storage tank is higher than... ,but and The adiabatic compressed air energy storage system charges in sliding pressure mode; if the air pressure in the storage tank is lower than this... ,but and The adiabatic compressed air energy storage system is charged in constant pressure mode. Similarly, under the constraint of equation (3), when the adiabatic compressed air energy storage system is not discharging, , When the adiabatic compressed air energy storage system discharges, At this point, the specific operating mode of the adiabatic compressed air energy storage system during discharge is determined based on the gas pressure in the gas storage tank. If the gas pressure in the gas storage tank is lower than this... ,but and The adiabatic compressed air energy storage system discharges in sliding pressure mode; if the gas pressure in the storage tank is higher than this... ,but and The adiabatic compressed air energy storage system discharges in constant pressure mode. To ensure the safe and stable operation of the system, the gas storage tank of the adiabatic compressed air energy storage system must always be kept within its operating range, as shown in equation (4).

[0033] In one optional implementation, the compression-side constraints include: upper and lower limits of charging power, a formula for calculating the mass flow rate of compressed air, a formula for the operating characteristics under constant pressure operation mode, and a formula for the operating characteristics under sliding pressure operation mode; establishing the compression-side constraints of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation includes: Establish the upper and lower limits of the charging power constraints: (5) in, The charging power of the adiabatic compressed air energy storage system at time t; and The upper and lower limits of the power output of the adiabatic compressed air energy storage system when charging in constant pressure mode are respectively observed. Figure 3 It can be observed that it is a constant; and The upper and lower power limits of the adiabatic compressed air energy storage system when charging in sliding pressure mode are respectively observed. Figure 3 It can be observed that it is not a constant; Establish the formula for calculating the mass flow rate of the compressed air: (6) in, and All of these are introduced auxiliary variables, representing the air mass flow rate on the compression side at time t when the adiabatic compressed air energy storage system is charged in constant pressure and sliding pressure modes, respectively. Establish the operating characteristic formula under the constant pressure operation mode on the compression side: (7) in, and These are all fitting coefficients, used to fit the functional relationship between the compressed air mass flow rate and the charging power when the adiabatic compressed air energy storage system is charged in constant pressure mode. and The value can be obtained through simulation or experimentation.

[0034] Establish the working characteristic formula for the compression-side sliding pressure operation mode: (8) (9) (10) in, Let i be the i-th element in an ascending sorted sequence of gas pressure values ​​for a gas storage facility. This indicates that the gas pressure in the gas storage tank is constant. At that time, the upper limit of the power of the adiabatic compressed air energy storage system when charging in sliding pressure mode; and These are all auxiliary variables used to construct a piecewise linear function of charging power with respect to gas storage pressure under sliding pressure operation mode; and All are fitting coefficients, used to fit the functional relationship between the lower limit of charging power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system is charged in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the air mass flow rate on the compression side and the charging power when the adiabatic compressed air energy storage system is charged in sliding pressure mode. , , and , and The value can be obtained through simulation or experimentation.

[0035] In this embodiment, to ensure the safe and stable operation of the adiabatic compressed air energy storage system during the charging process, its charging power needs to be limited to a certain range. Therefore, it is necessary to establish upper and lower limit constraints on the charging power that comprehensively consider the constant-pressure and sliding-pressure hybrid operation. As the adiabatic compressed air energy storage system charges, air continuously flows into the storage tank, so it is necessary to calculate the air mass flow rate flowing into the storage tank from the compression side. Furthermore, when calculating the air mass flow rate on the compression side, it is necessary to consider the influence of constant-pressure operation mode and sliding-pressure operation mode on the air mass flow rate separately. Therefore, the compression side constraints specifically include: upper and lower limit constraints on charging power, a formula for calculating the air mass flow rate on the compression side, a formula for the operating characteristics under constant-pressure operation mode on the compression side, and a formula for the operating characteristics under sliding-pressure operation mode on the compression side.

[0036] In this embodiment, under the constraint of equation (5), if the adiabatic compressed air energy storage system is charged in constant pressure mode, its charging power should be limited to [the specified value]. Internally; if the adiabatic compressed air energy storage system is charged in sliding pressure mode, its charging power should be limited to Inside. For example... Figure 3 As shown, when the adiabatic compressed air energy storage system is charged in constant pressure mode, its upper and lower limits of charging power are constant. At this time, only the functional relationship between the mass flow rate of the compressed air and the charging power is unclear, which can be modeled as Equation (7). When the A-CAES is charged in sliding pressure mode, its upper and lower limits of charging power change with the gas pressure of the gas storage tank. The upper and lower limits of charging power that change in sliding pressure mode can be modeled as Equations (8) and (9). In addition, it is also necessary to establish the functional relationship between the mass flow rate of the compressed air and the charging power when the A-CAES is charged in sliding pressure mode, as shown in Equation (10).

[0037] In one optional implementation, the expansion-side constraints include: upper and lower limits of discharge power constraints, a formula for calculating the expansion-side air mass flow rate, a formula for the operating characteristics under constant-pressure operation mode on the expansion side, and a formula for the operating characteristics under sliding-pressure operation mode on the expansion side; establishing the expansion-side constraints of the adiabatic compressed air energy storage system under constant-pressure-sliding-pressure hybrid operation includes: Establish the upper and lower limits of the discharge power constraints: (11) in, Let be the discharge power of the adiabatic compressed air energy storage system at time t; and The upper and lower limits of the power output of the adiabatic compressed air energy storage system when discharging in constant pressure mode are respectively observed. Figure 4 It can be observed that it is a constant; and These represent the upper and lower power limits of the adiabatic compressed air energy storage system when discharging in sliding pressure mode. (Observation) Figure 4 It can be observed that it is not a constant; Establish the formula for calculating the air mass flow rate on the expansion side: (12) in, and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in constant pressure mode; Establish the operating characteristic formula under the constant pressure operation mode on the expansion side: (13) in, and These are all fitting coefficients, used to fit the functional relationship between the expansion-side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in constant pressure mode. and The value can be obtained through simulation or experimentation; Establish the working characteristic formula for the expansion-side sliding pressure operation mode: (14) (15) (16) in, and All are fitting coefficients, used to fit the functional relationship between the upper limit of the discharge power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system discharges in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the lower limit of the discharge power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system discharges in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in sliding pressure mode. , , and , and The value can be obtained through simulation or experimentation.

[0038] In this embodiment, to ensure the safe and stable operation of the adiabatic compressed air energy storage system during the discharge process, its discharge power needs to be limited to a certain range. Therefore, it is necessary to establish upper and lower limit constraints on the discharge power that comprehensively consider the constant pressure and sliding pressure mixed operation. As the adiabatic compressed air energy storage system discharges, air continuously flows out of the storage tank. Therefore, it is necessary to calculate the air mass flow rate flowing out of the storage tank on the expansion side. Furthermore, when calculating the air mass flow rate on the expansion side, it is necessary to consider the influence of constant pressure operation mode and sliding pressure operation mode on the air mass flow rate separately. Therefore, the expansion side constraints specifically include: upper and lower limit constraints on discharge power, calculation formula for air mass flow rate on the expansion side, operating characteristic formula for constant pressure operation mode on the expansion side, and operating characteristic formula for sliding pressure operation mode on the expansion side.

[0039] In this embodiment, under the constraint of equation (11), if the adiabatic compressed air energy storage system discharges in constant pressure mode, its discharge power should be limited to [the specified value]. If the adiabatic compressed air energy storage system discharges in sliding pressure mode, its discharge power should be limited to [specific value]. Inside. For example... Figure 4 As shown, when the adiabatic compressed air energy storage system discharges in constant pressure mode, its upper and lower limits of discharge power are constant. At this time, only the functional relationship between the mass flow rate of the air on the expansion side and the discharge power is unclear, which can be modeled as Equation (13). When the adiabatic compressed air energy storage system discharges in sliding pressure mode, its upper and lower limits of discharge power change with the gas pressure of the storage tank. The upper and lower limits of discharge power that change in sliding pressure mode can be modeled as Equations (14) and (15). Experimental results were obtained. In addition, it is also necessary to establish the functional relationship between the mass flow rate of the air on the expansion side and the discharge power when the A-CAES discharges in sliding pressure mode, as shown in Equation (16).

[0040] In one optional implementation, the operational constraints include: mutual exclusion constraints between charge and discharge states; and operational constraints for establishing the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation, including: (17) in, This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is charging at time t. A value of 1 indicates charging, and a value of 0 indicates not charging. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is discharging at time t. A value of 1 indicates discharging, and a value of 0 indicates no discharging.

[0041] In this embodiment, to ensure the normal operation of the adiabatic compressed air energy storage system, it is necessary to establish operating constraints for the adiabatic compressed air energy storage system, which mainly include mutual exclusion constraints for charging and discharging states. Equation (17) requires that the adiabatic compressed air energy storage system cannot operate in both charging and discharging states simultaneously.

[0042] In one optional implementation, the objective function for the adiabatic compressed air energy storage system under constant-pressure-sliding-pressure hybrid operation includes: The objective function is established based on optimal economic efficiency: (18) in, Let t be the electricity price at time t.

[0043] Step S22: By introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints to obtain the target constraints.

[0044] In this embodiment, by introducing auxiliary continuous variables, the nonlinear constraints in the constraints established in step S11 are transformed into linear constraints. For example, a formula involved in the compression constraint contains a nonlinear term resulting from the multiplication of a continuous variable and a Boolean variable, causing the established constraint to be a nonlinear constraint. This can be transformed by introducing auxiliary continuous variables. After linearization, a difficult-to-solve mixed-integer nonlinear programming problem can be transformed into a mixed-integer linear programming problem, thus enabling efficient solution. This guarantees finding the global optimum and the solution speed is much faster than directly solving the nonlinear problem.

[0045] In one optional implementation, by introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints to obtain the target constraints, including: Convert the upper and lower limits of charging power in the compression-side constraints into linear constraints: (19) Convert the formula for calculating the air mass flow rate on the compression side in the compression-side constraint into a linear constraint: (20) Convert the upper and lower limits of discharge power in the expansion-side constraints into linear constraints: ;(twenty one) Convert the formula for calculating the air mass flow rate on the expansion side in the expansion side constraint to a linear constraint: ;(twenty two) in, , , , , , , and All of these are introduced auxiliary continuous variables; M2, M3, M4, and M5 are all positive constants. , , , .

[0046] In this embodiment, since the established equations (5), (6), (11), and (12) all contain nonlinear terms involving the multiplication of continuous variables with Boolean variables, the constraints established are nonlinear constraints. After introducing auxiliary continuous variables, the above constraints can all be transformed into linear constraints, and the transformation results are shown in equations (19), (20), (21), and (22) above, respectively.

[0047] Step S23: Based on the objective constraints and the objective function, establish an adiabatic compressed air energy storage scheduling model.

[0048] In this embodiment, based on the linearized objective constraints and objective function from step S22, and integrated according to the standard optimization model format, an adiabatic compressed air energy storage scheduling model based on a mixed integer linear model is established. This model accurately characterizes the operating characteristics of adiabatic compressed air energy storage under constant-pressure and sliding-pressure hybrid operation, and can be efficiently solved to obtain the scheduling plan for the adiabatic compressed air energy storage system. It achieves accurate modeling of adiabatic compressed air energy storage scheduling under constant-pressure and sliding-pressure hybrid operation modes, which helps improve scheduling accuracy and economy, adapt to wide pressure range operating requirements, and enhance the operating revenue of the energy storage system in the electricity market environment.

[0049] Step S24: Load the adiabatic compressed air energy storage scheduling model and input data into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The input data includes: predicted electricity price data and equipment physical parameters. The scheduling plan refers to the start-up and shutdown plan of the compression side and expansion side, the power consumption plan of the compression side and the power generation plan of the expansion side for each future time period.

[0050] In this embodiment, the established adiabatic compressed air energy storage scheduling model and input data are loaded into the solver. Parameters such as solution accuracy and time limits are set, and the solution is started. After the solver completes its operation, the scheduling plan for the adiabatic compressed air energy storage system is obtained. Input data includes predicted electricity price data and equipment physical parameters. The predicted electricity price data is a prediction of the node price or market clearing price for a future preset time period. Equipment physical parameters refer to the inherent parameters of the system equipment, such as the volume and pressure range of the gas storage tank, and the minimum output pressure of the compressor unit. The scheduling plan refers to the start-up and shutdown plan for the compression and expansion sides, the power consumption plan for the compression side, and the power generation plan for the expansion side for each future time period. Start-up and shutdown plan: Whether the compressor and high-power turbine are turned on or off in each time period. Power plan: The specific power consumption for compression and the power generation for expansion in each time period. This scheduling plan can fully consider the characteristics of the constant-pressure-sliding-pressure hybrid operation mode, and maximize the total operating benefits of the adiabatic compressed air energy storage system within the scheduling cycle under various constraints, which helps to improve the system's economic efficiency and operational level.

[0051] In the adiabatic compressed air energy storage scheduling method considering constant-pressure and sliding-pressure hybrid operation provided in this application, constraints and objective functions of the adiabatic compressed air energy storage system under constant-pressure and sliding-pressure hybrid operation are established. The constraints include: gas storage constraints, compression-side constraints, expansion-side constraints, and operational constraints. The objective function aims to maximize the total operational benefits of the adiabatic compressed air energy storage system within the scheduling cycle. By introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints, resulting in the objective constraints. Based on the objective constraints and objective function, an adiabatic compressed air energy storage scheduling model is established. The adiabatic compressed air energy storage scheduling model and input data are loaded into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant-pressure and sliding-pressure hybrid operation. This application transforms the nonlinear constraints in the constraints into linear constraints by introducing auxiliary continuous variables, which linearizes complex nonlinear problems and significantly improves the solution efficiency. The scheduling model established based on the transformed objective constraints and objective function can obtain the economically optimal scheduling plan in a short time, helping to improve the economic benefits and operational efficiency of the energy storage system under complex operating modes.

[0052] Based on the same inventive concept, one embodiment of this application provides an adiabatic compressed air energy storage scheduling device that considers constant pressure-sliding pressure hybrid operation. Figure 5 This is a schematic diagram of the structure of an adiabatic compressed air energy storage and scheduling device considering constant pressure-sliding pressure hybrid operation according to an embodiment of this application, as shown below. Figure 5 As shown, the device includes: The first module is used to establish the constraints and objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The constraints include: gas storage constraints, compression side constraints, expansion side constraints and operation constraints. The objective function aims to maximize the total operating benefits of the adiabatic compressed air energy storage system within the scheduling cycle. The transformation module is used to transform the nonlinear constraints in the constraints into linear constraints by introducing auxiliary continuous variables, thereby obtaining the target constraints; The second module is used to establish an adiabatic compressed air energy storage scheduling model based on the target constraints and the target function. The solver module is used to load the adiabatic compressed air energy storage scheduling model and input data into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The input data includes: predicted electricity price data and equipment physical parameters. The scheduling plan refers to the start-up and shutdown plan of the compression side and expansion side, the power consumption plan of the compression side and the power generation plan of the expansion side for each future time period.

[0053] Based on the same inventive concept, one embodiment of this application provides an electronic device, referring to... Figure 6 , Figure 6 This is a schematic diagram illustrating an electronic device according to an embodiment of this application. Figure 6 As shown, the electronic device 100 includes a memory 110 and a processor 120. The memory 110 and the processor 120 are connected via a bus communication. The memory 110 stores a computer program that can run on the processor 120 to implement the steps in the adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation described in any of the above embodiments of this application.

[0054] Based on the same inventive concept, this disclosure also provides a computer-readable storage medium, which, when the instructions in the computer-readable storage medium are executed by a processor of a computer device, enables the computer device to perform the steps in the adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation described in any of the above embodiments of this application.

[0055] Based on the same inventive concept, this disclosure also provides a computer program product, including a computer program that, when executed by a processor of a computer device, can perform the steps in the adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation described in any of the above embodiments of this application.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] Those skilled in the art will understand that embodiments of this application can be provided as methods, apparatus, or computer program products. Therefore, embodiments of this application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of this application can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0058] This application describes embodiments with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0059] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0060] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0061] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0062] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0063] The above provides a detailed description of the adiabatic compressed air energy storage scheduling method, apparatus, equipment, and storage medium considering constant pressure-sliding pressure hybrid operation provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for scheduling adiabatic compressed air energy storage considering constant pressure-sliding pressure hybrid operation, characterized in that, The method includes: Establish the constraints and objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The constraints include: gas storage constraints, compression side constraints, expansion side constraints and operation constraints. The objective function aims to maximize the total operating benefits of the adiabatic compressed air energy storage system within the scheduling cycle. By introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints, thus obtaining the target constraints; Based on the objective constraints and the objective function, an adiabatic compressed air energy storage scheduling model is established. The adiabatic compressed air energy storage scheduling model and input data are loaded into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The input data includes: predicted electricity price data and equipment physical parameters. The scheduling plan refers to the start-up and shutdown plan of the compression side and expansion side, the power consumption plan of the compression side and the power generation plan of the expansion side for each future time period.

2. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation according to claim 1, characterized in that, The gas storage constraints include: the gas storage pressure change calculation formula, the constant pressure-sliding pressure operation state differentiation formula, and the upper and lower limit constraints of the gas storage pressure; establishing the gas storage constraints for the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation includes: Establish the formula for calculating the pressure change of the gas storage facility: ； in, This represents the gas pressure in the gas storage tank at time t; and Let represent the air mass flow rates on the compression and expansion sides at time t, respectively; and These are the wall temperature and volume of the gas storage facility, respectively. is the gas constant of air; The interval between two moments; Establish the formula for distinguishing between constant pressure and sliding pressure operating states; ； ； in, This is the minimum output air pressure of the compressor unit, used to define the operating mode of the adiabatic compressed air energy storage system during charging. This is the maximum intake pressure of the air turbine assembly, used to define the operating mode of the adiabatic compressed air energy storage system during discharge. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is charging at time t. A value of 1 indicates charging, and a value of 0 indicates not charging. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is discharging at time t. A value of 1 indicates discharging, and a value of 0 indicates no discharging. This indicates whether the thermal compressed air energy storage system operates in constant pressure mode when charging. A value of 1 indicates charging in constant pressure mode, and a value of 0 indicates charging in non-constant pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in sliding pressure mode when charging. A value of 1 indicates charging in sliding pressure mode, while a value of 0 indicates charging in non-sliding pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in constant pressure mode when discharging. A value of 1 indicates that it discharges in constant pressure mode, and a value of 0 indicates that it does not discharge in constant pressure mode. This indicates whether the adiabatic compressed air energy storage system operates in sliding pressure mode when discharging. A value of 1 indicates discharging in sliding pressure mode, and a value of 0 indicates discharging not in sliding pressure mode. M1 is a normal number, and its value is selected as... , This is the maximum operating pressure of the gas storage facility; Establish upper and lower pressure limits for the gas storage facility: ； in, and These are the minimum and maximum operating gas pressures of the gas storage facility, respectively.

3. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation according to claim 1, characterized in that, The compression-side constraints include: upper and lower limits of charging power, a formula for calculating the mass flow rate of compressed air, a formula for the operating characteristics under constant pressure operation mode, and a formula for the operating characteristics under sliding pressure operation mode; establishing compression-side constraints for the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation includes: Establish the upper and lower limits of the charging power constraints: ； in, The charging power of the adiabatic compressed air energy storage system at time t; and These are the upper and lower power limits of the adiabatic compressed air energy storage system when it is charged in constant pressure mode. and These are the upper and lower power limits of the adiabatic compressed air energy storage system when it is charged in sliding pressure mode; Establish the formula for calculating the mass flow rate of the compressed air: ； in, and All of these are introduced auxiliary variables, representing the air mass flow rate on the compression side at time t when the adiabatic compressed air energy storage system is charged in constant pressure and sliding pressure modes, respectively. Establish the operating characteristic formula under the constant pressure operation mode on the compression side: ； in, and All are fitting coefficients, used to fit the functional relationship between the air mass flow rate on the compression side and the charging power when the adiabatic compressed air energy storage system is charged in constant pressure mode; Establish the working characteristic formula for the compression-side sliding pressure operation mode: ； ； ； in, Let i be the i-th element in an ascending sorted sequence of gas pressure values ​​for a gas storage facility. This indicates that the gas pressure in the gas storage tank is constant. At that time, the upper limit of the power of the adiabatic compressed air energy storage system when charging in sliding pressure mode; and These are all auxiliary variables used to construct a piecewise linear function of charging power with respect to gas storage pressure under sliding pressure operation mode; and All are fitting coefficients, used to fit the functional relationship between the lower limit of charging power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system is charged in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the air mass flow rate on the compression side and the charging power when the adiabatic compressed air energy storage system is charged in sliding pressure mode.

4. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation according to claim 1, characterized in that, The expansion-side constraints include: upper and lower limits of discharge power constraints, calculation formula for expansion-side air mass flow rate, operating characteristic formula for expansion-side constant pressure operation mode, and operating characteristic formula for expansion-side sliding pressure operation mode; establishing expansion-side constraints for the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation includes: Establish the upper and lower limits of the discharge power constraints: ； in, Let be the discharge power of the adiabatic compressed air energy storage system at time t; and These are the upper and lower limits of the power output of the adiabatic compressed air energy storage system when discharging in constant pressure mode; and These are the upper and lower power limits of the adiabatic compressed air energy storage system when discharging in sliding pressure mode, respectively. Establish the formula for calculating the air mass flow rate on the expansion side: ； in, and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in constant pressure mode; Establish the operating characteristic formula under the constant pressure operation mode on the expansion side: ； in, and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in constant pressure mode; Establish the working characteristic formula for the expansion-side sliding pressure operation mode: ； ； ； in, and All are fitting coefficients, used to fit the functional relationship between the upper limit of the discharge power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system discharges in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the lower limit of the discharge power and the gas pressure of the gas storage tank when the adiabatic compressed air energy storage system discharges in sliding pressure mode; and All are fitting coefficients, used to fit the functional relationship between the expansion side air mass flow rate and the discharge power when the adiabatic compressed air energy storage system discharges in sliding pressure mode.

5. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation according to claim 1, characterized in that, The operational constraints include: mutual exclusion constraints between charging and discharging states; and operational constraints for establishing an adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation, including: ； in, This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is charging at time t. A value of 1 indicates charging, and a value of 0 indicates not charging. This is a Boolean variable indicating whether the adiabatic compressed air energy storage system is discharging at time t. A value of 1 indicates discharging, and a value of 0 indicates no discharging.

6. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation according to claim 1, characterized in that, The objective function for establishing an adiabatic compressed air energy storage system under constant-pressure-sliding-pressure hybrid operation includes: The objective function is established based on optimal economic efficiency: ； in, Let t be the electricity price at time t.

7. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure hybrid operation according to claim 1, characterized in that, By introducing auxiliary continuous variables, the nonlinear constraints in the constraints are transformed into linear constraints, resulting in the target constraints, including: Convert the upper and lower limits of charging power in the compression-side constraints into linear constraints: ； Convert the formula for calculating the air mass flow rate on the compression side in the compression-side constraint into a linear constraint: ； Convert the upper and lower limits of discharge power in the expansion-side constraints into linear constraints: ； Convert the formula for calculating the air mass flow rate on the expansion side in the expansion side constraint to a linear constraint: ； in, , , , , , , and All of these are introduced auxiliary continuous variables; M2, M3, M4, and M5 are all positive constants. , , , .

8. An adiabatic compressed air energy storage and dispatching device considering constant pressure-sliding pressure hybrid operation, characterized in that, The device includes: The first module is used to establish the constraints and objective function of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The constraints include: gas storage constraints, compression side constraints, expansion side constraints and operation constraints. The objective function aims to maximize the total operating benefits of the adiabatic compressed air energy storage system within the scheduling cycle. The transformation module is used to transform the nonlinear constraints in the constraints into linear constraints by introducing auxiliary continuous variables, thereby obtaining the target constraints; The second module is used to establish an adiabatic compressed air energy storage scheduling model based on the target constraints and the target function. The solver module is used to load the adiabatic compressed air energy storage scheduling model and input data into the solver to obtain the scheduling plan of the adiabatic compressed air energy storage system under constant pressure-sliding pressure hybrid operation. The input data includes: predicted electricity price data and equipment physical parameters. The scheduling plan refers to the start-up and shutdown plan of the compression side and expansion side, the power consumption plan of the compression side and the power generation plan of the expansion side for each future time period.

9. An electronic device, characterized in that, include: A processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the adiabatic compressed air energy storage scheduling method considering constant-pressure-sliding-pressure hybrid operation as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the adiabatic compressed air energy storage scheduling method considering constant-pressure-sliding-pressure hybrid operation as described in any one of claims 1 to 7.

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