CN-122020986-A - Adiabatic compressed air energy storage scheduling method, device and equipment considering constant pressure-sliding pressure mixed operation and storage medium

CN122020986ACN 122020986 ACN122020986 ACN 122020986ACN-122020986-A

Abstract

The application provides a heat-insulating compressed air energy storage scheduling method, device, equipment and storage medium considering constant pressure-sliding pressure mixed operation, relates to the field of compressed air energy storage, and aims to improve economic benefits and operation efficiency of a heat-insulating compressed air energy storage system in a complex operation mode. The method comprises the steps of establishing constraint conditions and objective functions of an adiabatic compressed air energy storage system under constant pressure-sliding pressure mixed operation, wherein the constraint conditions comprise gas storage constraint, compression side constraint, expansion side constraint and operation constraint, the objective functions take the maximum total operation income of the adiabatic compressed air energy storage system in a dispatching cycle as targets, converting nonlinear constraint in the constraint conditions into linear constraint through introducing auxiliary continuous variable to obtain target constraint, establishing an adiabatic compressed air energy storage dispatching model based on the target constraint and the objective functions, and solving the model to obtain a dispatching plan of the adiabatic compressed air energy storage system under the constant pressure-sliding pressure mixed operation.

Inventors

ZHENG ZHIMEI
Deng Yuechen
XIE NINGNING
ZHANG XUELIN
ZHANG GUOQIANG
XUE XIAODAI
ZHONG SHENGYUAN
ZHOU YU
Lin xinxing
Shang Ziya

Assignees

中国长江三峡集团有限公司
清华大学

Dates

Publication Date: 20260512
Application Date: 20260106

Claims (10)

1. An adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure mixed operation, which is characterized by comprising the following steps: establishing constraint conditions and objective functions of the adiabatic compressed air energy storage system under constant-pressure and sliding-pressure mixed operation, wherein the constraint conditions comprise gas storage constraint, compression side constraint, expansion side constraint and operation constraint, and the objective functions aim to maximize the total operation income of the adiabatic compressed air energy storage system in a dispatching cycle; Converting nonlinear constraint in the constraint condition into linear constraint by introducing an auxiliary continuous variable to obtain target constraint; establishing an adiabatic compressed air energy storage scheduling model based on the target constraint and the target function; And loading the adiabatic compressed air energy storage scheduling model and input data into a solver, and solving to obtain a scheduling plan of the adiabatic compressed air energy storage system under constant-voltage-sliding-voltage mixed operation, wherein the input data comprises predicted electricity price data and equipment physical parameters, and the scheduling plan refers to a start-stop plan of a compression side and an expansion side, a power consumption plan of the compression side and a power generation plan of the expansion side of each future time period.
2. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure mixed operation according to claim 1, wherein the gas storage constraint comprises a gas storage gas pressure change calculation formula, a constant pressure-sliding pressure operation state distinguishing formula and a gas storage gas pressure upper limit and lower limit constraint, and the method comprises the steps of: establishing a calculation formula of the air pressure change of the air storage: ; Wherein, the The air pressure of the air storage at the time t is represented; And The mass air flow rates at the compression side and the expansion side at time t are respectively shown; And The wall temperature and the volume of the gas storage are respectively; a gas constant that is air; Is the interval between two moments; establishing the constant pressure-sliding pressure running state distinguishing formula; ; ; Wherein, the The lowest output air pressure of the compressor unit is used for defining an operation mode when the adiabatic compressed air energy storage system is charged; the maximum air inlet pressure of the air turbine set is used for defining an operation mode when the adiabatic compressed air energy storage system discharges; a boolean variable indicating whether the adiabatic compressed air energy storage system is charged at time t, the value being 1 for charging and 0 for not charging; a boolean variable indicating whether the adiabatic compressed air energy storage system is discharged at time t, which value is 1, indicating discharge, and 0, indicating no discharge; indicating whether the adiabatic compressed air energy storage system is operating in a constant voltage mode when charged, a value of 1 indicating charging in the constant voltage mode, and a value of 0 indicating not charging in the constant voltage mode; indicating whether the adiabatic compressed air energy storage system is operating in a sliding mode when charged, a value of 1 indicating charging in the sliding mode, and a value of 0 indicating not charging in the sliding mode; Indicating whether the adiabatic compressed air energy storage system is operating in a constant pressure mode when discharging, when the value is 1, indicating that the system is discharging in a constant pressure mode, and when the value is 0, indicating that the system is not discharging in a constant pressure mode; indicating whether the adiabatic compressed air energy storage system is operating in a slip mode when it is discharging, a value of 1 indicating that it is discharging in slip mode when it is 0 indicating that it is not discharging in slip mode, M1 is a positive constant selected as , Is the maximum operating air pressure of the air storage; Establishing the upper limit constraint and the lower limit constraint of the air pressure of the air storage: ; Wherein, the And The minimum and maximum operating pressures of the reservoir, respectively.
3. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure mixed operation according to claim 1, wherein the compression side constraint comprises a charging power upper limit and lower limit constraint, a compression side air mass flow rate calculation formula, a compression side operating characteristic formula in a constant pressure operating mode and a compression side operating characteristic formula in a compression side sliding pressure operating mode, and the method comprises the steps of: establishing the upper limit constraint and the lower limit constraint of the charging power: ; Wherein, the Charging power of the adiabatic compressed air energy storage system at the time t; And The upper and lower power limits of the adiabatic compressed air energy storage system are respectively set when the adiabatic compressed air energy storage system is charged in a constant voltage mode; And The upper and lower power limits of the adiabatic compressed air energy storage system when charged in a sliding mode are respectively set; Establishing the compressed side air mass flow rate calculation formula: ; Wherein, the And Are all introduced auxiliary variables respectively representing the air mass flow rate at the compression side at time t when the adiabatic compressed air energy storage system is charged in constant pressure and sliding mode; Establishing a working characteristic formula under the compression side constant pressure operation mode: ; Wherein, the And Are fitting coefficients for fitting a functional relationship of the compressed side air mass flow rate with respect to the charge power when the adiabatic compressed air energy storage system is charged in a constant pressure mode; establishing a working characteristic formula under the compression sideslip pressure operation mode: ; ; ; Wherein, the The ith element in the gas storage gas pressure value sequence is sequenced in an ascending order, Indicating when the air pressure of the air storage is constant When the adiabatic compressed air energy storage system is charged in a sliding mode, an upper power limit; And Are all auxiliary variables and are used for constructing piecewise linear functions of charging power relative to the air pressure of the air storage in the sliding pressure operation mode; And The fitting coefficients are used for fitting a functional relation of the lower limit of the charging power with respect to the air pressure of the air storage when the adiabatic compressed air energy storage system is charged in a sliding mode; And Are fitting coefficients for fitting the compressed side air mass flow rate as a function of charge power when the adiabatic compressed air energy storage system is charged in a slip mode.
4. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure mixed operation according to claim 1, wherein the expansion side constraint comprises a discharge power upper limit and lower limit constraint, an expansion side air mass flow rate calculation formula, an expansion side operating characteristic formula in a constant pressure operating mode and an expansion side operating characteristic formula in an expansion side sliding pressure operating mode, and the establishing of the expansion side constraint of the adiabatic compressed air energy storage system under the constant pressure-sliding pressure mixed operation comprises the following steps: Establishing the upper limit constraint and the lower limit constraint of the discharge power: ; Wherein, the Discharging power of the adiabatic compressed air energy storage system at the time t; And The upper and lower power limits of the adiabatic compressed air energy storage system are respectively set when the adiabatic compressed air energy storage system discharges in a constant voltage mode; And The upper and lower power limits of the adiabatic compressed air energy storage system when the system discharges in a sliding mode; Establishing the expansion side air mass flow rate calculation formula: ; Wherein, the And Are fitting coefficients for fitting a functional relationship of expansion side air mass flow rate with respect to discharge power when the adiabatic compressed air energy storage system is discharged in a constant pressure mode; Establishing a working characteristic formula under the expansion side constant pressure operation mode: ; Wherein, the And Are fitting coefficients for fitting a functional relationship of expansion side air mass flow rate with respect to discharge power when the adiabatic compressed air energy storage system is discharged in a constant pressure mode; Establishing a working characteristic formula under the expansion sideslip pressure operation mode: ; ; ; Wherein, the And The system is a fitting coefficient and is used for fitting a functional relation of the upper limit of the discharge power with respect to the air pressure of the air storage when the adiabatic compressed air energy storage system discharges in a sliding mode; And The system is a fitting coefficient and is used for fitting a functional relation of the lower limit of the discharge power with respect to the air pressure of the air storage when the adiabatic compressed air energy storage system discharges in a sliding mode; And Are fitting coefficients for fitting the expansion side air mass flow rate as a function of discharge power when the adiabatic compressed air energy storage system is discharged in a slip mode.
5. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure mixed operation according to claim 1, wherein the operation constraint comprises a mutual exclusion constraint of charge and discharge states, an operation constraint of establishing an adiabatic compressed air energy storage system under the constant pressure-sliding pressure mixed operation, and the method comprises the following steps: ; Wherein, the A boolean variable indicating whether the adiabatic compressed air energy storage system is charged at time t, the value being 1 for charging and 0 for not charging; a boolean variable indicating whether the adiabatic compressed air energy storage system is discharged at time t, which value is 1 for discharge and 0 for no discharge.
6. The adiabatic compressed air energy storage scheduling method considering constant pressure-skid pressure hybrid operation as claimed in claim 1, wherein establishing an objective function of the adiabatic compressed air energy storage system under constant pressure-skid pressure hybrid operation includes: establishing the objective function based on economical optimization: ; Wherein, the The electricity price at time t.
7. The adiabatic compressed air energy storage scheduling method considering constant pressure-sliding pressure mixed operation according to claim 1, wherein the step of converting the nonlinear constraint in the constraint condition into a linear constraint by introducing an auxiliary continuous variable to obtain a target constraint comprises: converting the upper and lower limit constraints of the charging power in the compression side constraint into linear constraint: ; converting the compression-side air mass flow rate calculation formula in the compression-side constraint into a linear constraint: ; converting the discharge power upper and lower limit constraints in the expansion side constraint into linear constraints: ; converting the expansion-side air mass flow rate calculation formula in the expansion-side constraint into a linear constraint: ; Wherein, the 、、、、、、 And Are all introduced auxiliary continuous variables, M2, M3, M4 and M5 are all normal numbers, , , , 。
8. An adiabatic compressed air energy storage scheduling device considering constant pressure-sliding pressure hybrid operation, characterized in that the device comprises: The first building module is used for building constraint conditions and objective functions of the adiabatic compressed air energy storage system under constant pressure-sliding pressure mixed operation, wherein the constraint conditions comprise gas storage constraint, compression side constraint, expansion side constraint and operation constraint, and the objective functions aim at maximizing the total operation income of the adiabatic compressed air energy storage system in a dispatching period; The transformation module is used for transforming the nonlinear constraint in the constraint condition into the linear constraint by introducing an auxiliary continuous variable to obtain a target constraint; The second building module is used for building an adiabatic compressed air energy storage scheduling model based on the target constraint and the target function; And the solving module is used for loading the adiabatic compressed air energy storage scheduling model and input data into a solver, and solving to obtain a scheduling plan of the adiabatic compressed air energy storage system under constant-voltage-sliding-voltage mixed operation, wherein the input data comprises predicted electricity price data and equipment physical parameters, and the scheduling plan refers to a start-stop plan of a compression side and an expansion side, a power consumption plan of the compression side and a power generation plan of the expansion side of each future time period.
9. An electronic device, comprising: a processor, a memory and a computer program stored on the memory and executable on the processor, the processor implementing the adiabatic compressed air energy storage scheduling method of any one of claims 1 to 7 taking into account constant pressure-skid pressure hybrid operation when executing the computer program.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the adiabatic compressed air energy storage scheduling method of any one of claims 1 to 7 taking into account constant pressure-skid pressure hybrid operation.

Description

Adiabatic compressed air energy storage scheduling method, device and equipment considering constant pressure-sliding pressure mixed operation and storage medium Technical Field The embodiment of the application relates to the field of compressed air energy storage, in particular to an adiabatic compressed air energy storage scheduling method, device and equipment considering constant pressure-sliding pressure mixed operation and a storage medium. Background Adiabatic compressed air energy storage is a large-scale physical energy storage technology that compresses air and stores it by consuming electrical energy, releasing high-pressure air to drive turbines to generate electricity when needed, and "adiabatic" refers to the heat generated during compression that can be collected and stored for use in subsequent power generation processes to increase system efficiency. The adiabatic compressed air energy storage belongs to emerging physical energy storage, is suitable for large-scale long-time electric energy consumption, and rapidly develops in China. Early adiabatic compressed air energy storage multi-salt-selection cave is used as a gas storage, the position requirement is strict, construction is inflexible, and therefore an artificial chamber gas storage scheme is gradually adopted. However, the air pressure range of the air storage of the artificial chamber is wide, the air storage is limited by the manufacturing process of the equipment, and the core equipment for heat insulation and compressed air energy storage cannot work efficiently in the wide air pressure range, so that a constant pressure-sliding pressure mixed operation mode is provided. The compressor unit and the air turbine unit in the constant pressure-sliding pressure mixed operation mode have two operation modes of constant pressure and sliding pressure respectively under different gas storage pressures. But the heat-insulating compressed air energy storage for constant pressure-sliding pressure mixed operation at the present stage lacks an efficient and economic optimal scheduling technology. Therefore, how to provide an efficient and economical optimal scheduling technology for adiabatic compressed air energy storage of constant pressure-sliding pressure mixed operation is a problem to be solved. Disclosure of Invention The embodiment of the application aims to overcome the problems or at least partially solve the problems by providing an adiabatic compressed air energy storage scheduling method, device, equipment and storage medium considering constant pressure-sliding pressure mixed operation. An embodiment of the present application provides a method for scheduling heat-insulating compressed air energy storage considering constant pressure-sliding pressure hybrid operation, the method comprising: establishing constraint conditions and objective functions of the adiabatic compressed air energy storage system under constant-pressure and sliding-pressure mixed operation, wherein the constraint conditions comprise gas storage constraint, compression side constraint, expansion side constraint and operation constraint, and the objective functions aim to maximize the total operation income of the adiabatic compressed air energy storage system in a dispatching cycle; Converting nonlinear constraint in the constraint condition into linear constraint by introducing an auxiliary continuous variable to obtain target constraint; establishing an adiabatic compressed air energy storage scheduling model based on the target constraint and the target function; And loading the adiabatic compressed air energy storage scheduling model and input data into a solver, and solving to obtain a scheduling plan of the adiabatic compressed air energy storage system under constant-voltage-sliding-voltage mixed operation, wherein the input data comprises predicted electricity price data and equipment physical parameters, and the scheduling plan refers to a start-stop plan of a compression side and an expansion side, a power consumption plan of the compression side and a power generation plan of the expansion side of each future time period. In an alternative embodiment, the gas storage constraint comprises a gas storage gas pressure change calculation formula, a constant pressure-sliding pressure operation state distinguishing formula and a gas storage gas pressure upper and lower limit constraint, and the gas storage constraint of the adiabatic compressed air energy storage system under the constant pressure-sliding pressure mixed operation is established and comprises the following steps: establishing a calculation formula of the air pressure change of the air storage: ; Wherein, the The air pressure of the air storage at the time t is represented; And The mass air flow rates at the compression side and the expansion side at time t are respectively shown; And The wall temperature and the volume of the gas storage are respectively; a gas constant that is air; Is