Coordinated control method, device and medium for thermal power generation units based on heat storage

Abstract

This application discloses a coordinated control method, device, and medium for thermal power units based on thermal storage. This method can be applied to control related equipment in thermal power units based on thermal storage. The method includes: acquiring the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment; determining the energy supply distribution of the boiler and the thermal storage equipment for the steam turbine based on the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment; and controlling the boiler and the thermal storage equipment to provide energy to the steam turbine based on the energy supply distribution. Therefore, using this solution, the boiler and the thermal storage equipment can be comprehensively utilized to supply energy to the steam turbine, thereby rationally utilizing the energy supply characteristics of the boiler and the thermal storage equipment, enhancing the steam turbine's rapid load change capability, and ensuring the safe and reliable operation of the thermal power unit during deep peak shaving.

Description

Technical Field

[0001] This application relates to the power industry, and in particular to a coordinated control method, device and medium for thermal power units based on thermal storage. Background Technology

[0002] Besides thermal power generation, renewable energy sources can also be used for power generation. For example, wind power and solar power can be used. As renewable energy generation urgently needs to be connected to the grid, the instability of renewable energy requires thermal power units to have a large load variation range and load change rate.

[0003] Currently, relying on traditional control technologies, thermal power units based on thermal storage cannot obtain satisfactory operating parameters, which in turn affects the safety, economy, and stability of the thermal power units.

[0004] Therefore, there is an urgent need for a solution to address the above problems. Summary of the Invention

[0005] To solve, or at least partially solve, the above-mentioned technical problems, this application provides a method, device and medium for coordinated control of thermal power units based on thermal storage.

[0006] In a first aspect, this application provides a coordinated control method for thermal power units based on thermal storage, the method comprising:

[0007] Obtain the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment;

[0008] Based on the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage device, the energy supply distribution of the boiler and the thermal storage device for powering the steam turbine is determined.

[0009] Based on the energy supply distribution, the boiler and the thermal storage equipment are controlled to provide energy to the steam turbine.

[0010] Optionally, obtaining the energy demand parameters of the steam turbine includes:

[0011] Receive load command and obtain the current operating status of the steam turbine, wherein the load command is used to indicate the load demand of the steam turbine;

[0012] The energy demand parameters of the steam turbine are determined based on the load command and the current operating status of the steam turbine.

[0013] Optionally, the energy demand parameters of the steam turbine are determined based on the load command and the current operating status of the steam turbine, including:

[0014] The load command and the current operating status of the turbine are input into the turbine energy storage model to obtain the energy demand parameters of the turbine. The turbine energy storage model is pre-constructed based on the turbine's design parameters, the turbine's mechanistic model, and the turbine's historical operating data. The turbine energy storage model is used to obtain the energy demand parameters according to the load command and the current operating status of the turbine.

[0015] Optionally, obtaining the boiler's energy supply parameters includes:

[0016] Based on the current operating conditions and parameters of the boiler, the energy supply parameters of the boiler are obtained.

[0017] Optionally, the energy supply parameters of the boiler are obtained based on the current operating conditions and parameters of the boiler, including:

[0018] The current operating conditions and parameters of the boiler are input into the boiler energy storage model to obtain the energy supply parameters of the boiler. The boiler energy storage model is pre-constructed based on the boiler's design parameters, the boiler's mechanism model, and the boiler's historical operating data. The boiler energy storage model is used to obtain the boiler's energy supply parameters according to the current operating conditions and parameters of the boiler.

[0019] Optionally, obtaining the energy supply parameters of the thermal storage device includes:

[0020] Obtain the operating parameters of the thermal storage equipment;

[0021] Based on the operating parameters of the thermal storage device, the energy supply parameters of the thermal storage device are obtained.

[0022] Optionally, obtaining the energy supply parameters of the thermal storage device based on its operating parameters includes:

[0023] The operating parameters of the thermal storage device are input into the thermal storage energy storage model to obtain the energy supply parameters of the thermal storage device. The thermal storage energy storage model is pre-constructed based on the design parameters of the thermal storage device, the mechanism model of the thermal storage device, and the historical operating data of the thermal storage device. The thermal storage energy storage model is used to obtain the energy supply parameters of the thermal storage device according to the operating parameters of the thermal storage device.

[0024] Optionally, the energy demand parameters of the steam turbine include one or more of the following: supply capacity demand, supply rate demand, and supply time demand.

[0025] Correspondingly, the energy supply parameters of the boiler and the energy supply parameters of the thermal storage equipment include one or more of the following: supply capacity requirement, supply rate requirement, and supply time requirement.

[0026] Secondly, this application provides a coordinated control device for thermal power units based on thermal storage, the device comprising:

[0027] The acquisition unit is used to acquire the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment.

[0028] The determining unit is used to determine the energy supply distribution of the boiler and the thermal storage device for the steam turbine based on the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage device.

[0029] A control unit is used to control the boiler and the thermal storage equipment to provide energy to the steam turbine based on the energy supply distribution.

[0030] Optionally, the acquisition unit is configured to:

[0031] Receive load command and obtain the current operating status of the steam turbine, wherein the load command is used to indicate the load demand of the steam turbine;

[0032] The energy demand parameters of the steam turbine are determined based on the load command and the current operating status of the steam turbine.

[0033] Optionally, determining the energy demand parameters of the steam turbine based on the load command and the current operating status of the steam turbine includes:

[0034] The load command and the current operating status of the turbine are input into the turbine energy storage model to obtain the energy demand parameters of the turbine. The turbine energy storage model is pre-constructed based on the turbine's design parameters, the turbine's mechanistic model, and the turbine's historical operating data. The turbine energy storage model is used to obtain the energy demand parameters according to the load command and the current operating status of the turbine.

[0035] Optionally, the acquisition unit is configured to:

[0036] Based on the current operating conditions and parameters of the boiler, the energy supply parameters of the boiler are obtained.

[0037] Optionally, the energy supply parameters of the boiler are obtained based on the current operating conditions and parameters of the boiler, including:

[0038] The current operating conditions and parameters of the boiler are input into the boiler energy storage model to obtain the energy supply parameters of the boiler. The boiler energy storage model is pre-constructed based on the boiler's design parameters, the boiler's mechanism model, and the boiler's historical operating data. The boiler energy storage model is used to obtain the boiler's energy supply parameters according to the current operating conditions and parameters of the boiler.

[0039] Optionally, the acquisition unit is configured to:

[0040] Obtain the operating parameters of the thermal storage equipment;

[0041] Based on the operating parameters of the thermal storage device, the energy supply parameters of the thermal storage device are obtained.

[0042] Optionally, the energy supply parameters of the thermal storage device are obtained based on its operating parameters, including:

[0043] The operating parameters of the thermal storage device are input into the thermal storage energy storage model to obtain the energy supply parameters of the thermal storage device. The thermal storage energy storage model is pre-constructed based on the design parameters of the thermal storage device, the mechanism model of the thermal storage device, and the historical operating data of the thermal storage device. The thermal storage energy storage model is used to obtain the energy supply parameters of the thermal storage device according to the operating parameters of the thermal storage device.

[0044] Optionally, the energy demand parameters of the steam turbine include one or more of the following: supply capacity demand, supply rate demand, and supply time demand.

[0045] Correspondingly, the energy supply parameters of the boiler and the energy supply parameters of the thermal storage equipment include one or more of the following: supply capacity requirement, supply rate requirement, and supply time requirement.

[0046] Thirdly, this application provides an electronic device, which includes a processor and a memory;

[0047] The processor is configured to execute instructions stored in the memory to cause the electronic device to perform the method described in any of the first aspects above.

[0048] Fourthly, this application provides a computer-readable storage medium including instructions that instruct a device to perform the method described in any of the first aspects above.

[0049] Fifthly, this application provides a computer program product that, when run on a computer, causes the computer to perform the method described in any of the first aspects above.

[0050] Compared with the prior art, the embodiments of this application have the following advantages:

[0051] This application provides a method, device, and medium for coordinated control of thermal power units based on thermal storage. This method can be applied to control related equipment in thermal power units. The method includes: acquiring energy demand parameters of the steam turbine, energy supply parameters of the boiler, and energy supply parameters of the thermal storage device. After acquiring these parameters, the energy supply distribution for the boiler and the thermal storage device to provide steam to the steam turbine can be determined. Based on this energy supply distribution, the boiler and the thermal storage device are controlled to provide steam to the steam turbine. Therefore, this solution allows the boiler and thermal storage device to supply energy to the steam turbine, thus rationally utilizing their energy supply characteristics. This enhances the steam turbine's ability to rapidly change loads, ensuring that relevant parameters of the thermal power unit remain within safe ranges during power generation, thereby guaranteeing the safety of the thermal power unit. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the structure of a thermal power unit provided in an embodiment of this application;

[0054] Figure 2 A flowchart illustrating a coordinated control method for thermal power units based on thermal storage, provided for an embodiment of this application;

[0055] Figure 3 This is a schematic diagram of a thermal power unit coordination control device based on thermal storage, provided as an embodiment of this application. Detailed Implementation

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

[0057] With the grid connection of renewable energy power generation, thermal power units are required to have the ability to change load over a wide range and at varying load rates; otherwise, the relevant parameters of the thermal power units may exceed the safe range, affecting their safety, stability, and economy. The rapid load change capability of a thermal power unit refers specifically to the rapid load change capability of the steam turbine within the unit.

[0058] Currently, thermal power units utilize boilers to provide steam to turbines during power generation. Specifically, pulverized coal combustion in the boiler produces high-temperature flue gas. The heat from this flue gas is absorbed by water, and the liquid water absorbs energy to become steam, which drives the turbine to perform work. However, this process involves significant lag, making it difficult for the boiler to rapidly adjust its load when unit load changes are required.

[0059] Thermal storage systems have good heat storage capacity. Therefore, if a thermal storage system is used to absorb heat and release the heat to heat steam and then use it to do work on the steam turbine when needed, the unit can achieve rapid load changes.

[0060] In view of this, the embodiments of this application provide a coordinated control method, device and medium for thermal power units based on thermal storage. It can use boilers and thermal storage equipment to provide steam to the steam turbine, thereby making reasonable use of the steam supply characteristics of boilers and thermal storage equipment, thereby meeting the rapid load change capability of the steam turbine, and ensuring that the relevant parameters of the thermal power unit are within the safe range when the new energy grid is connected for power generation, thus ensuring the safety of the thermal power unit.

[0061] The various non-limiting embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0062] Exemplary methods

[0063] See Figure 1 This figure is a structural schematic diagram of a thermal power unit provided in an embodiment of this application. Figure 1 The thermal power unit 100 includes a boiler 101, a heat storage device 102, and a steam turbine 103. Both the boiler 101 and the heat storage device 102 can provide steam to the steam turbine 103. The energy stored in the heat storage device can come from the boiler 101 or from other heat sources. This application embodiment does not make specific limitations.

[0064] It should be noted that Figure 1 This is merely shown for the purpose of understanding the relevant content of this solution and does not constitute a limitation on the embodiments of this application. In addition to including... Figure 1 In addition to the boiler 101, thermal storage equipment 102 and steam turbine 103 shown, other equipment may also be included, which will not be described in detail here.

[0065] The thermal storage device mentioned in the embodiments of this application refers to a device capable of providing thermal storage functions. The thermal storage device can store heat using a thermal storage medium. The embodiments of this application do not specifically limit the thermal storage medium; the thermal storage medium can be, for example, binary molten salt, ternary molten salt, oil, or particulate matter. When the thermal storage medium is molten salt (e.g., binary molten salt or ternary molten salt), the thermal storage device can also be called a molten salt thermal storage device.

[0066] Next, combined Figure 2 This paper introduces the coordinated control method for thermal power units based on thermal storage provided in the embodiments of this application. Figure 2 This is a flowchart illustrating a coordinated control method for thermal power units based on thermal storage, provided as an embodiment of this application. Figure 2 As shown, the thermal power unit coordinated control method based on thermal storage may include the following steps S101-S103.

[0067] S101: Obtain the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment.

[0068] In this embodiment, the energy demand parameter of the steam turbine refers to the energy demand of the steam turbine. This embodiment does not specifically limit the energy demand parameter of the steam turbine. In one example, the energy demand parameter of the steam turbine may be, for example, the required steam flow rate or steam pressure value. In another example, the energy demand parameter of the steam turbine may include one or more of the following: supply capacity requirement, supply rate requirement, and supply time requirement.

[0069] Supply capacity demand can be the demand for energy supply capacity, such as the steam level of the supply capacity. Supply rate demand can be the demand for the energy supply rate, and supply time demand can be the demand for the energy supply time.

[0070] In one example, the energy demand parameters of the steam turbine can be obtained, for instance, by obtaining the steam demand parameters input by the user.

[0071] In yet another example, obtaining the energy demand parameters of the steam turbine can be achieved, for instance, through the following steps A1-A2.

[0072] A1: Receive load command and obtain the current operating status of the steam turbine. The load command is used to indicate the load demand of the steam turbine.

[0073] In one example, the load command may be user-inputted, for example, through a human-machine interface. In this case, the control device can receive the load command input through the human-machine interface. In another example, the load command may also be sent to the control device by another device. In this case, the control device can receive the load command sent by the other device.

[0074] In this embodiment of the application, the current operating status of the steam turbine is obtained, for example, the current operating condition of the steam turbine is obtained, or multiple operating parameters of the steam turbine are obtained.

[0075] In this embodiment of the application, the load demand of the steam turbine can be the load demand of the steam turbine over a certain period of time in the future. The load demand of the steam turbine over a certain period of time can remain unchanged, or the load demand of the steam turbine over a certain period of time can change with time. This embodiment of the application does not make specific limitations.

[0076] A2: Determine the energy demand parameters of the steam turbine based on the load command and the current operating status of the steam turbine.

[0077] After obtaining the load command and the turbine's operating status, the turbine's energy demand parameters can be determined based on these parameters. In this case, since the energy demand parameters are obtained from the load command, the determined energy demand parameters match the load command. Consequently, when the energy demand parameters are met, the turbine's variable load capacity can satisfy the load demand indicated by the load command.

[0078] In one example, step A2 can be implemented by determining the turbine's energy demand parameters based on the turbine's current operating status, operating patterns, and load command. Specifically, if the turbine urgently needs to operate based on its current operating status, and the turbine's energy demand parameters are met, then the load demand indicated by the load command can be satisfied according to the turbine's operating patterns.

[0079] In another example, step A2 can be implemented using a turbine energy storage model to obtain the turbine's energy demand parameters. Specifically, the load command and the turbine's current operating state can be input into the turbine energy storage model to obtain the turbine's energy demand parameters. This turbine energy storage model can obtain the turbine's energy demand parameters based on the input operating state and load command. Therefore, after inputting the load command and the turbine's current operating state into the turbine energy storage model, the model can output the turbine's energy demand parameters.

[0080] In one example, the turbine energy storage model can be pre-built. In a specific example, the turbine energy storage model can be pre-built based on the turbine's design parameters, its mechanistic model, and its historical operating data. Wherein:

[0081] The design parameters of the steam turbine include, but are not limited to: power parameters, speed parameters, inlet and outlet steam pressure, and inlet and outlet steam temperature.

[0082] The mechanism model of the steam turbine can be obtained by modeling the steam turbine using simulation software (such as finite element analysis software) based on the principles of energy conservation, mass conservation, and momentum equations.

[0083] The historical operating data of the steam turbine may include previous operating data of the steam turbine, simulation data obtained from the mechanism model, and specific test data.

[0084] In one example, the turbine energy storage model can be updated. For instance, the turbine energy storage model can be updated based on parameters such as the current operating conditions of the turbine, the energy parameters delivered to the turbine (e.g., high-temperature, high-pressure steam), and the turbine load.

[0085] In one example, the turbine energy storage model can be a static turbine energy storage model, which is an energy storage model of a turbine operating under a fixed condition. In another example, the turbine energy storage model can be a dynamic turbine energy storage model, which is an energy storage model that reflects how the turbine's operating conditions change as the turbine operates.

[0086] In this embodiment, the boiler's energy supply parameters refer to information related to the energy the boiler can supply. This embodiment does not specifically limit the boiler's energy supply parameters. In one example, the boiler's energy supply parameters may be, for example, the energy value the boiler can supply. In another example, the boiler's energy supply parameters may include, for example, one or more of supply capacity, supply rate, and supply time. The supply capacity may, for example, be a level of supply capacity.

[0087] In one example, obtaining the boiler's energy supply parameters can be achieved, for instance, by obtaining the boiler's energy supply parameters input by the user.

[0088] In another example, considering that the energy that the boiler can supply is related to the boiler's operating conditions and operating parameters, the energy supply parameters of the boiler can be obtained based on the current operating conditions and current operating parameters of the boiler in a specific implementation.

[0089] The embodiments of this application do not specifically limit the operating parameters of the boiler. The operating parameters of the boiler include, but are not limited to, the amount of coal in the boiler, the air volume entering the boiler, the water volume, etc.

[0090] In one example, the phrase "obtain the energy supply parameters of the boiler based on its current operating conditions and parameters" can be implemented by combining the boiler's current operating conditions, parameters, and operating patterns to arrive at the boiler's energy supply parameters. The boiler's operating patterns can, for example, refer to the relationship between the energy the boiler can provide and its operating conditions and parameters.

[0091] In another example, the phrase "obtaining the boiler's energy supply parameters based on the boiler's current operating conditions and parameters" can be implemented using a boiler energy storage model. Specifically, the boiler's current operating conditions and parameters can be input into the boiler energy storage model to obtain the boiler's energy supply parameters. This model can derive the boiler's energy supply parameters based on the input operating conditions and parameters. Therefore, after inputting the boiler's current operating conditions and parameters into the model, it can output the boiler's energy supply parameters. The boiler's current operating parameters include, but are not limited to, one or more of the following: economizer inlet pressure, economizer outlet pressure, steam-water separator outlet pressure, superheater outlet pressure, feedwater temperature, economizer outlet temperature, superheater inlet temperature, superheater outlet temperature, feedwater flow rate, and main steam flow rate.

[0092] In one example, the boiler energy storage model can be pre-built. In a specific example, the boiler energy storage model can be pre-built based on the boiler's design parameters, the boiler's mechanistic model, and the boiler's historical operating data. Wherein:

[0093] The boiler design parameters include, but are not limited to: boiler load, main steam pressure, main steam temperature, main steam flow rate, coal mill type, coal mill output, boiler efficiency, flue gas temperature, NOx concentration, burner parameters, etc.

[0094] The mechanistic model of the boiler can be obtained by modeling the boiler using simulation software (such as finite element analysis software) based on the principles of energy conservation, mass conservation, and momentum equations.

[0095] The historical operating data of the boiler may include previous operating data of the boiler, simulation data obtained from the mechanism model, and specific test data.

[0096] In one example, the boiler energy storage model can be updated, for example, based on parameters such as the current operating parameters of the boiler and the corresponding energy supply parameters of the boiler under those operating parameters.

[0097] In one example, the boiler energy storage model can be a static boiler energy storage model, which is an energy storage model of the boiler operating under a fixed condition. In another example, the boiler energy storage model can be a dynamic boiler energy storage model, which is an energy storage model of the boiler that can reflect the changes in the boiler's operating conditions as the boiler operates.

[0098] In this embodiment, the energy supply parameters of the thermal storage device refer to information related to the energy that the thermal storage device can supply. This embodiment does not specifically limit the energy supply parameters of the thermal storage device. In one example, the energy supply parameters of the thermal storage device may be, for example, the energy value that the thermal storage device can supply. In another example, the energy supply parameters of the thermal storage device may include, for example, one or more of supply capacity, supply rate, and supply time. The supply capacity may, for example, be a level of supply capacity.

[0099] In one example, obtaining the energy supply parameters of the thermal storage device can be achieved by, for instance, obtaining the energy supply parameters of the thermal storage device input by the user.

[0100] In another example, considering that the energy that the thermal storage device can supply is related to the operating parameters of the thermal storage device, the energy supply parameters of the thermal storage device can be obtained from the operating parameters of the thermal storage device in a specific implementation.

[0101] The embodiments of this application do not specifically limit the operating parameters of the thermal storage device. The operating parameters of the thermal storage device include, but are not limited to, the temperature of the environment in which the thermal storage device is located, the parameters of the heat source that provides heat to the thermal storage device, and so on.

[0102] In one example, the phrase "obtaining the energy supply parameters of the thermal storage device based on its operating parameters" can be implemented by combining the operating parameters of the thermal storage device with its operating patterns. The operating patterns of the thermal storage device can, for example, indicate the correlation between the energy it can provide and its operating parameters.

[0103] In another example, the phrase "obtaining the energy supply parameters of the thermal storage device based on its operating parameters" can be implemented using a thermal energy storage model. Specifically, the operating parameters of the thermal storage device can be input into the thermal energy storage model to obtain its energy supply parameters. This model can obtain the energy supply parameters based on the input operating parameters. Therefore, after inputting the operating parameters of the thermal storage device into the model, the model can output the energy supply parameters. As an example, the operating parameters of the thermal storage device may include one or more of the following: thermal storage medium temperature, flow rate, preheater inlet feedwater flow rate, evaporator water level, superheater outlet steam flow rate, and superheater outlet steam pressure.

[0104] In one example, the thermal energy storage model can be pre-built. In a specific example, the thermal energy storage model can be pre-built based on the design parameters of the thermal storage device, the mechanistic model of the thermal storage device, and the historical operating data of the thermal storage device. Wherein:

[0105] The design parameters of the thermal storage equipment include, but are not limited to: inlet and outlet temperatures of the thermal storage medium, flow rate of the thermal storage medium, and specific heat of the thermal storage medium.

[0106] The mechanism model of the thermal storage device can be obtained by modeling the thermal storage device using simulation software (such as finite element analysis software) based on the principles of energy conservation, mass conservation, and momentum equations.

[0107] Historical operating data of thermal storage equipment can include previous operating data of the thermal storage equipment, simulation data obtained from mechanism models, and specific test data.

[0108] In one example, the thermal storage device model can be updated. For instance, the thermal storage energy storage model can be updated based on parameters such as the current operating parameters of the thermal storage device and the corresponding energy supply parameters of the thermal storage device under those operating parameters.

[0109] In one example, the thermal energy storage model can be a static thermal energy storage model, which is an energy storage model where the thermal energy storage device operates under a fixed condition. In another example, the thermal energy storage model can be a dynamic thermal energy storage model, which is an energy storage model that reflects the changes in the operating conditions of the thermal energy storage device as the device operates.

[0110] S102: Based on the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage device, determine the energy supply distribution of the boiler and the thermal storage device for the steam turbine.

[0111] After obtaining the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage device, the energy supply distribution of the boiler and the thermal storage device for powering the steam turbine can be determined based on these parameters. In one example, the energy demand parameters, boiler energy supply parameters, and thermal storage device energy supply parameters can be calculated using a specific algorithm to obtain the energy supply distribution of the boiler and the thermal storage device for powering the steam turbine. This energy supply distribution can, for example, include the energy supply situation of the boiler to the steam turbine and the energy supply situation of the thermal storage device to the steam turbine over a certain future time period, thereby ensuring that the energy supply demand of the steam turbine is met during that future time period. For example, between time t1 and time t2, the energy provided by the boiler to the steam turbine is a, and the energy provided by the thermal storage device to the steam turbine is b. Between time t2 and time t3, the energy provided by the boiler to the steam turbine is c, and the energy provided by the thermal storage device to the steam turbine is d.

[0112] S103: Based on the energy supply distribution, control the boiler and the thermal storage equipment to provide energy to the steam turbine.

[0113] After determining the energy supply distribution, the control device can control the boiler and the thermal storage device to provide energy to the steam turbine based on the energy supply distribution, thereby satisfying the energy supply demand of the steam turbine.

[0114] As can be seen from the above description, the solution of this application embodiment can use a boiler and a thermal storage device to supply energy to the steam turbine, thereby making reasonable use of the energy supply characteristics of the boiler and the thermal storage device, thereby enhancing the steam turbine's ability to quickly change load, and ensuring that the relevant parameters of the thermal power unit are within a safe range during power generation, thus ensuring the safety of the thermal power unit.

[0115] Exemplary device

[0116] Based on the methods provided in the above embodiments, this application also provides an apparatus, which will be described below with reference to the accompanying drawings.

[0117] See Figure 3 This figure is a schematic diagram of a thermal power unit coordination control device based on thermal storage provided in an embodiment of this application. The device 300 can be used to execute the thermal power unit coordination control method based on thermal storage provided in the above method embodiments.

[0118] The device 300 may specifically include, for example, an acquisition unit 301, a determination unit 302, and a control unit 303.

[0119] The acquisition unit 301 is used to acquire the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment.

[0120] The determining unit 302 is used to determine the energy supply distribution of the boiler and the thermal storage device for the steam turbine based on the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage device.

[0121] Control unit 303 is used to control the boiler and the thermal storage equipment to provide energy to the steam turbine based on the energy supply distribution.

[0122] Optionally, the acquisition unit 301 is used for:

[0123] Receive load command and obtain the current operating status of the steam turbine, wherein the load command is used to indicate the load demand of the steam turbine;

[0124] The energy demand parameters of the steam turbine are determined based on the load command and the current operating status of the steam turbine.

[0125] Optionally, determining the energy demand parameters of the steam turbine based on the load command and the operating status includes:

[0126] The load command and the current operating status of the turbine are input into the turbine energy storage model to obtain the energy demand parameters of the turbine. The turbine energy storage model is pre-constructed based on the turbine's design parameters, the turbine's mechanistic model, and the turbine's historical operating data. The turbine energy storage model is used to obtain the energy demand parameters according to the load command and the current operating status of the turbine.

[0127] Optionally, the acquisition unit 301 is used for:

[0128] Based on the current operating conditions and parameters of the boiler, the energy supply parameters of the boiler are obtained.

[0129] Optionally, obtaining the boiler's energy supply parameters based on the boiler's current operating conditions and parameters includes:

[0130] The current operating conditions and parameters of the boiler are input into the boiler energy storage model to obtain the energy supply parameters of the boiler. The boiler energy storage model is pre-constructed based on the boiler's design parameters, the boiler's mechanism model, and the boiler's historical operating data. The boiler energy storage model is used to obtain the boiler's energy supply parameters according to the current operating conditions and parameters of the boiler.

[0131] Optionally, the acquisition unit 301 is used for:

[0132] Obtain the operating parameters of the thermal storage equipment;

[0133] Based on the operating parameters of the thermal storage device, the energy supply parameters of the thermal storage device are obtained.

[0134] Optionally, obtaining the energy supply parameters of the thermal storage device based on its operating parameters includes:

[0135] The operating parameters of the thermal storage device are input into the thermal storage energy storage model to obtain the energy supply parameters of the thermal storage device. The thermal storage energy storage model is pre-constructed based on the design parameters of the thermal storage device, the mechanism model of the thermal storage device, and the historical operating data of the thermal storage device. The thermal storage energy storage model is used to obtain the energy supply parameters of the thermal storage device according to the operating parameters of the thermal storage device.

[0136] Optionally, the energy demand parameters of the steam turbine include one or more of the following: supply capacity demand, supply rate demand, and supply time demand.

[0137] Correspondingly, the energy supply parameters of the boiler and the energy supply parameters of the thermal storage equipment include one or more of the following: supply capacity requirement, supply rate requirement, and supply time requirement.

[0138] Since the device 300 is a device corresponding to the method provided in the above method embodiments, the specific implementation of each unit of the device 300 is based on the same concept as the above method embodiments. Therefore, the specific implementation of each unit of the device 300 can be referred to the description section of the above method embodiments, and will not be repeated here.

[0139] This application also provides an electronic device, which includes a processor and a memory;

[0140] The processor is used to execute instructions stored in the memory so that the electronic device performs the thermal power unit coordinated control method based on thermal storage as described in any of the above method embodiments.

[0141] This application provides a computer-readable storage medium including instructions that instruct a device to execute the thermal power unit coordinated control method based on thermal storage as described in any of the above method embodiments.

[0142] This application provides a computer program product that, when run on a computer, causes the computer to execute the thermal power unit coordinated control method based on thermal storage as described in any of the above method embodiments.

[0143] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0144] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

[0145] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A coordinated control method for thermal power units based on thermal storage, characterized in that, The method includes: The energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment are obtained. The energy demand parameters of the steam turbine include the supply capacity requirement, the supply rate requirement, and the supply time requirement. The energy supply parameters of the boiler and the energy supply parameters of the thermal storage equipment both include the supply capacity, the supply rate, and the supply time. Based on the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage device, the energy supply distribution of the boiler and the thermal storage device for powering the steam turbine is determined. Based on the energy supply distribution, the boiler and the thermal storage equipment are controlled to provide energy to the steam turbine; Obtain the boiler's energy supply parameters, including: The current operating conditions and operating parameters of the boiler are input into the boiler energy storage model to obtain the energy supply parameters of the boiler. The boiler energy storage model is pre-constructed based on the boiler's design parameters, the boiler's mechanism model, and the boiler's historical operating data. The boiler energy storage model is used to obtain the boiler's energy supply parameters according to the current operating conditions and operating parameters of the boiler. Obtain the energy supply parameters of the thermal storage equipment, including: Obtain the operating parameters of the thermal storage device; input the operating parameters of the thermal storage device into the thermal energy storage model to obtain the energy supply parameters of the thermal storage device. The thermal energy storage model is pre-constructed based on the design parameters of the thermal storage device, the mechanism model of the thermal storage device, and the historical operating data of the thermal storage device. The thermal energy storage model is used to obtain the energy supply parameters of the thermal storage device according to the operating parameters of the thermal storage device.

2. The method according to claim 1, characterized in that, The acquisition of the turbine's energy demand parameters includes: Receive load commands and obtain the current operating status of the steam turbine, wherein the load commands are used to indicate the load demand of the steam turbine; The energy demand parameters of the steam turbine are determined based on the load command and the current operating status of the steam turbine.

3. The method according to claim 2, characterized in that, Based on the load command and the current operating status of the turbine, the energy demand parameters of the turbine are obtained, including: The load command and the current operating status of the turbine are input into the turbine energy storage model to obtain the energy demand parameters of the turbine. The turbine energy storage model is pre-constructed based on the turbine's design parameters, the turbine's mechanistic model, and the turbine's historical operating data. The turbine energy storage model is used to obtain the turbine's energy demand parameters according to the load command and the turbine's current operating status.

4. A coordinated control device for thermal power units based on thermal storage, characterized in that, The device includes: The acquisition unit is used to acquire the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage equipment. The energy demand parameters of the steam turbine include the supply capacity requirement, the supply rate requirement, and the supply time requirement. The energy supply parameters of the boiler and the energy supply parameters of the thermal storage equipment both include the supply capacity, the supply rate, and the supply time. The determining unit is used to determine the energy supply distribution of the boiler and the thermal storage device for the steam turbine based on the energy demand parameters of the steam turbine, the energy supply parameters of the boiler, and the energy supply parameters of the thermal storage device. The control unit is configured to control the boiler and the thermal storage equipment to provide energy to the steam turbine based on the energy supply distribution; wherein: Obtain the boiler's energy supply parameters, including: The current operating conditions and operating parameters of the boiler are input into the boiler energy storage model to obtain the energy supply parameters of the boiler. The boiler energy storage model is pre-constructed based on the boiler's design parameters, the boiler's mechanism model, and the boiler's historical operating data. The boiler energy storage model is used to obtain the boiler's energy supply parameters according to the current operating conditions and operating parameters of the boiler. Obtain the energy supply parameters of the thermal storage equipment, including: Obtain the operating parameters of the thermal storage device; input the operating parameters of the thermal storage device into the thermal energy storage model to obtain the energy supply parameters of the thermal storage device. The thermal energy storage model is pre-constructed based on the design parameters of the thermal storage device, the mechanism model of the thermal storage device, and the historical operating data of the thermal storage device. The thermal energy storage model is used to obtain the energy supply parameters of the thermal storage device according to the operating parameters of the thermal storage device.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store computer software instructions that, when the computer-readable storage medium is run on a computer, enable the computer to perform the method according to any one of claims 1 to 3.

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