Pressure adjusting method and device, electronic equipment and storage medium

Abstract

The invention provides a pressure adjusting method and device, electronic equipment and a storage medium. A load change signal of a steam turbine and main steam pressure of a boiler are monitored, and whether a main steam pressure set value is locked or not is judged based on the load change signal; under the condition that it is determined that the main steam pressure set value is locked, the air exhaust flow needing to be subjected to pressure compensation on the boiler is determined, and pressure compensation is conducted on the boiler according to the air exhaust flow; and based on the load change signal and the main steam pressure, the pressure change optimal rate is calculated, and the main steam pressure of the boiler is adjusted according to the pressure change optimal rate. Compared with the prior art, it can be ensured that the boiler operates under the optimal working condition, and the combustion efficiency and the heat efficiency are improved; according to the optimal pressure change rate calculated according to the load change signal and the main steam pressure, the main steam pressure of the boiler is adjusted, energy efficiency loss caused by too fast or too slow pressure change can be avoided, and the operation efficiency of the boiler is further optimized.

Description

Technical Field

[0001] The present disclosure relates to the technical field of steam turbine units, and in particular to a pressure regulating method and device, electronic equipment and storage medium. Background Art

[0002] In the power industry, the operational stability and economy of coal-fired power generation units are crucial. Especially under deep peak-shaving conditions, the units need to frequently adjust their loads to adapt to the needs of the power grid, which places extremely high demands on the control system of the units. Traditional control strategies often fail to balance the stable combustion, economy, and safety of the units, resulting in problems such as overshoot of coal volume, water and air volume, and large pressure fluctuations during deep peak-shaving, which seriously affects the operating efficiency and life of the units. Especially when the load of the unit changes, the energy balance between the boiler and the steam turbine will be temporarily broken, resulting in deviations in the main steam pressure. This transient energy imbalance causes excessive pressure deviations, which in turn causes overshoots in coal volume, water and air volume. Therefore, how to achieve energy balance between boilers and steam turbines and reduce pressure deviations has become an urgent problem to be solved. Summary of the invention

[0003] The present disclosure provides a pressure regulation method and device, electronic equipment and storage medium, which are mainly intended to solve the problem of energy imbalance between boilers and steam turbines, which leads to deviation of main steam pressure and then causes over-regulation of coal volume, water volume and air volume.

[0004] According to a first aspect of the present disclosure, there is provided a method for pressure regulation, comprising:

[0005] Monitor the load change signal of the steam turbine and the main steam pressure of the boiler, and determine whether to lock the main steam pressure setting value based on the load change signal;

[0006] In the case of determining to lock the main steam pressure setting value, determining the air extraction flow required for pressure compensation of the boiler, and performing pressure compensation on the boiler according to the air extraction flow;

[0007] Based on the load change signal and the main steam pressure, an optimal rate of pressure change is calculated, and the main steam pressure of the boiler is adjusted according to the optimal rate of pressure change.

[0008] In some embodiments, judging whether to lock the main steam pressure setting value based on the load change signal includes:

[0009] If the load change signal exceeds a preset load threshold, locking the main steam pressure setting value;

[0010] The locking time is recorded, and when the locking time exceeds the locking threshold, the main steam pressure setting value is unlocked.

[0011] In some embodiments, the method further comprises:

[0012] The operating data of the unit is obtained, and data analysis is performed on the operating data to determine the optimal setting value of the main steam pressure under different loads.

[0013] In some embodiments, determining the extraction flow rate for pressure compensation of the boiler, and performing pressure compensation on the boiler according to the extraction flow rate includes:

[0014] Monitoring the extraction steam flow rate of the steam turbine, calculating the correlation value between the extraction steam flow rate and the main steam pressure, so as to analyze and determine the influence degree of the change of the extraction steam flow rate on the main steam pressure;

[0015] Based on the degree of influence of the change in the extraction flow rate on the main steam pressure, the extraction flow rate required for pressure compensation of the boiler is determined.

[0016] In some embodiments, the calculating the optimal rate of pressure change based on the load change signal and the main steam pressure includes:

[0017] Calculating a load change rate and a pressure change rate according to the load change signal and the main steam pressure;

[0018] The optimal pressure change rate is calculated using the load change rate and the pressure change rate.

[0019] According to a second aspect of the present disclosure, there is provided a pressure regulating device, comprising:

[0020] A judgment unit, used for monitoring the load change signal of the steam turbine and the main steam pressure of the boiler, and judging whether to lock the main steam pressure setting value based on the load change signal;

[0021] A determination unit, configured to determine an air extraction flow required to perform pressure compensation on the boiler when the main steam pressure setting value is locked, and perform pressure compensation on the boiler according to the air extraction flow;

[0022] The adjustment unit is used to calculate the optimal rate of pressure change based on the load change signal and the main steam pressure, and adjust the main steam pressure of the boiler according to the optimal rate of pressure change.

[0023] In some embodiments, the determining unit includes:

[0024] A locking module, used for locking the main steam pressure setting value if the load change signal exceeds a preset load threshold;

[0025] The unlocking module is used to record the locking time and unlock the main steam pressure setting value when the locking time exceeds the locking threshold.

[0026] In some embodiments, the apparatus further comprises:

[0027] The analysis unit is used to obtain the operating data of the unit, and perform data analysis on the operating data to determine the optimal setting value of the main steam pressure under different loads.

[0028] In some embodiments, the determining unit includes:

[0029] A first determination module is used to monitor the extraction flow rate of the steam turbine, calculate the correlation value between the extraction flow rate and the main steam pressure, so as to analyze and determine the influence degree of the change of the extraction flow rate on the main steam pressure;

[0030] The second determination module is used to determine the extraction flow rate required to perform pressure compensation on the boiler based on the degree of influence of the change in the extraction flow rate on the main steam pressure.

[0031] In some embodiments, the adjustment unit includes:

[0032] A first calculation module, used for calculating the load change rate and the pressure change rate according to the load change signal and the main steam pressure;

[0033] The second calculation module is used to calculate the optimal pressure change rate by using the load change rate and the pressure change rate.

[0034] According to a third aspect of the present disclosure, there is provided an electronic device, including:

[0035] at least one processor; and

[0036] a memory communicatively connected to the at least one processor; wherein,

[0037] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method described in the first aspect.

[0038] According to a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0039] According to a fifth aspect of the present disclosure, a computer program product is provided, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the method as described in the first aspect above.

[0040] The present disclosure provides a method and device for pressure regulation, an electronic device and a storage medium, which monitor the load change signal of a steam turbine and the main steam pressure of a boiler, and judge whether to lock a main steam pressure setting value based on the load change signal; when it is determined that the main steam pressure setting value is locked, determine the exhaust flow required for pressure compensation of the boiler, and perform pressure compensation on the boiler according to the exhaust flow; calculate the optimal rate of pressure change based on the load change signal and the main steam pressure, and adjust the main steam pressure of the boiler according to the optimal rate of pressure change. Compared with the related art, the embodiment of the present disclosure monitors the load change signal of the turbine in real time, so that the system can respond to load changes more quickly and accurately, thereby maintaining the dynamic balance between the turbine and the boiler; after locking the main steam pressure set value, the system can control the main steam pressure of the boiler more stably, avoid pressure fluctuations caused by load changes, and improve the stability of the entire system; determine the exhaust flow rate that needs to be pressure compensated for the boiler, and pressure compensate the boiler accordingly, which can ensure that the boiler operates under the best operating conditions and improve combustion efficiency and thermal efficiency; adjust the main steam pressure of the boiler according to the optimal rate of pressure change calculated from the load change signal and the main steam pressure, which can avoid energy efficiency loss caused by too fast or too slow pressure change, and further optimize the operating efficiency of the boiler.

[0041] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure.

[0043] Figure 1 A flow chart of a pressure regulation method provided in an embodiment of the present disclosure;

[0044] Figure 2 A flow chart of another pressure regulation method provided in an embodiment of the present disclosure;

[0045] Figure 3 A schematic diagram of the structure of a pressure regulating device provided in an embodiment of the present disclosure;

[0046] Figure 4 A schematic structural diagram of another pressure regulating device provided in an embodiment of the present disclosure;

[0047] Figure 5 A schematic block diagram of an exemplary electronic device provided for an embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0049] The following describes the pressure regulation method and apparatus, electronic device, and storage medium according to the embodiments of the present disclosure with reference to the accompanying drawings.

[0050] Figure 1 A flow chart of a pressure regulation method provided in an embodiment of the present disclosure.

[0051] like Figure 1 As shown, the method comprises the following steps:

[0052] Step 101 , monitoring the load change signal of the steam turbine and the main steam pressure of the boiler, and judging whether to lock the main steam pressure setting value based on the load change signal.

[0053] In the embodiments of the present disclosure, when the load of the unit changes, the energy balance between the boiler and the steam turbine will be temporarily broken, resulting in a deviation in the main steam pressure. In order to avoid excessive pressure deviation caused by this transient energy imbalance, which in turn causes overshoot of the coal volume, water volume and air volume, we introduced a pressure self-waiting loop. This loop can automatically maintain the set value for a certain period of time according to the direction of pressure change, thereby giving the system a buffer period so that it can gradually adapt to the new load state. By monitoring the load change signal and the change trend of the main steam pressure, when the load change is detected, the waiting mechanism is immediately started to keep the current pressure setting value unchanged until the system stabilizes or the preset waiting time is reached. This loop can significantly reduce the pressure fluctuations caused by load changes and improve the stable combustion of the unit. At the same time, it can also reduce the frequent adjustment of coal volume, water volume and air volume, and extend the service life of the equipment.

[0054] Real-time monitoring of the turbine load change signal and the boiler's main steam pressure status, through advanced data acquisition and analysis systems, accurately capture every slight fluctuation of the load, and closely monitor the dynamic changes of the boiler's main steam pressure. Based on the acquired load change signal, the intelligent algorithm is used for comprehensive judgment and analysis to determine whether it is necessary to lock the set value of the main steam pressure, thereby ensuring the stable operation and optimized control of the entire thermal system.

[0055] Step 102, when it is determined that the main steam pressure setting value is locked, determine the air extraction flow required for pressure compensation of the boiler, and perform pressure compensation on the boiler according to the air extraction flow.

[0056] In the embodiments of the present disclosure, in order to ensure the consistency between the actual steam turbine load and the pressure setting, a dynamic compensation mechanism for the extraction flow rate to the main steam pressure setting is introduced. This mechanism can adjust the set value of the main steam pressure in real time according to the change of the extraction flow rate, thereby ensuring the match between the steam turbine load and the pressure setting. By monitoring the changes in the extraction flow rate, the degree of its influence on the main steam pressure is calculated using an algorithm, and the set value of the main steam pressure is adjusted accordingly. This adjustment is dynamic and real-time, and can ensure an accurate match between the steam turbine load and the pressure setting. This mechanism can significantly improve the load regulation accuracy and stability of the unit and reduce the pressure fluctuations caused by changes in the extraction flow rate. At the same time, it can also optimize the operating efficiency of the steam turbine and improve the economy of the unit.

[0057] After it has been determined that the boiler main steam pressure setting value needs to be locked, we will then determine the specific air extraction flow required for pressure compensation of the boiler in order to achieve the desired main steam pressure stability state based on the current system operating status and actual needs through precise calculation and analysis methods. In this process, various factors such as the boiler's thermal efficiency, steam generation rate, load change trend, and pressure distribution within the system will be fully considered to ensure the accuracy of the calculation. Subsequently, based on the calculated air extraction flow value, we will take corresponding control measures to adjust the boiler's operating parameters or enable a special pressure compensation device to accurately perform pressure compensation operations on the boiler, thereby effectively maintaining the stability of the main steam pressure and ensuring the efficient and safe operation of the entire thermal system.

[0058] Step 103, calculating the optimal rate of pressure change based on the load change signal and the main steam pressure, and adjusting the main steam pressure of the boiler according to the optimal rate of pressure change.

[0059] In the embodiments of the present disclosure, under deep peak-shaving conditions, as the load changes, the rate of change of the main steam pressure also needs to be adjusted accordingly. For this purpose, a sliding pressure variable rate loop is introduced. The loop can automatically adjust the pressure change rate according to the change of load, thereby reducing the impact of the pressure setting on the fuel, reducing the fluctuation of the coal quantity, and improving the stability of the combustion of deep peak-shaving. By monitoring the change trend of the load and the rate of change of the main steam pressure, the optimal pressure change rate is calculated using an algorithm, and the sliding pressure control strategy is adjusted accordingly. This adjustment is real-time and dynamic, and can ensure the stable operation of the unit under deep peak-shaving conditions. The loop can significantly reduce the pressure fluctuations and coal quantity fluctuations caused by load changes, and improve the stability of the combustion and economy of the unit. At the same time, it can also optimize the operating efficiency of the unit and extend the service life of the equipment.

[0060] Based on the real-time acquired turbine load change signal and the current main steam pressure data of the boiler, an optimal rate of pressure change is calculated that can quickly respond to load changes and maintain stable system operation. This optimal rate aims to balance the adjustment speed of the boiler main steam pressure and the stability during the adjustment process, avoiding system shocks caused by too fast pressure changes or efficiency losses caused by adjustment lags. Once the optimal rate of pressure change is determined, a detailed adjustment strategy will be formulated based on this rate, and the main steam pressure of the boiler will be finely adjusted through an automated control system or manual intervention. During the adjustment process, the system will continuously monitor the deviation of the actual pressure change from the set value, as well as further changes in the load, so as to adjust the strategy in a timely manner to ensure that the main steam pressure can reach the target value smoothly at the optimal rate, thereby meeting the operating requirements of the turbine and improving the operating efficiency and stability of the entire thermal system.

[0061] The present disclosure provides a method for pressure regulation, which includes monitoring a load change signal of a steam turbine and a main steam pressure of a boiler, and judging whether to lock a main steam pressure setting value based on the load change signal; determining an exhaust flow rate required for pressure compensation of the boiler when it is determined that the main steam pressure setting value is locked, and pressure compensating the boiler according to the exhaust flow rate; calculating an optimal rate of pressure change based on the load change signal and the main steam pressure, and adjusting the main steam pressure of the boiler according to the optimal rate of pressure change. Compared with the related art, the embodiment of the present disclosure monitors the load change signal of the turbine in real time, so that the system can respond to load changes more quickly and accurately, thereby maintaining the dynamic balance between the turbine and the boiler; after locking the main steam pressure set value, the system can control the main steam pressure of the boiler more stably, avoid pressure fluctuations caused by load changes, and improve the stability of the entire system; determine the exhaust flow rate that needs to be pressure compensated for the boiler, and pressure compensate the boiler accordingly, which can ensure that the boiler operates under the best operating conditions and improve combustion efficiency and thermal efficiency; adjust the main steam pressure of the boiler according to the optimal rate of pressure change calculated from the load change signal and the main steam pressure, which can avoid energy efficiency loss caused by too fast or too slow pressure change, and further optimize the operating efficiency of the boiler.

[0062] In order to clearly illustrate the embodiment of the present disclosure, this embodiment provides a flow chart of another pressure regulation method.

[0063] like Figure 2 As shown, the method comprises the following steps:

[0064] Step 201 : monitor the load change signal of the steam turbine and the main steam pressure of the boiler, and determine whether to lock the main steam pressure setting value based on the load change signal.

[0065] As an achievable manner of this embodiment, judging whether to lock the main steam pressure setting value based on the load change signal includes:

[0066] If the load change signal exceeds a preset load threshold, locking the main steam pressure setting value;

[0067] The locking time is recorded, and when the locking time exceeds the locking threshold, the main steam pressure setting value is unlocked.

[0068] Specifically, in step 201, during the operation of the thermal system, it is crucial to continuously and accurately monitor the load change signal of the steam turbine and the main steam pressure of the boiler. To achieve this goal, high-precision sensors and advanced data acquisition systems are used to capture and analyze the changes of these two key parameters in real time.

[0069] Based on the real-time acquired turbine load change signal, it is determined whether the main steam pressure setting value of the boiler needs to be locked. The implementation of this mechanism is intended to ensure that the system can respond quickly when the load changes significantly, and stabilize the operating state of the boiler by locking the main steam pressure setting value, thereby ensuring the reliability and stability of the entire thermal system.

[0070] First, a preset load threshold is set, which is determined based on the system's operating characteristics, historical data, and safety requirements. When the load change signal monitored in real time exceeds this preset load threshold, it means that the load has fluctuated greatly. At this time, the system will immediately trigger the locking mechanism to lock the boiler's main steam pressure setting value at the current value or the preset safety value to prevent excessive pressure fluctuations from causing adverse effects on the system.

[0071] At the same time, in order to avoid system rigidity or reduced efficiency that may be caused by long-term locking, a monitoring mechanism for the locking duration is also set. The system records the duration of each locking operation and compares it with the preset locking threshold. Once the locking duration exceeds this threshold, it means that the load change has stabilized or the system needs to restore normal adjustment flexibility. At this time, the system will automatically unlock the main steam pressure set value, allowing it to be dynamically adjusted according to subsequent load changes.

[0072] Step 202, obtaining the operating data of the unit, and performing data analysis on the operating data to determine the optimal setting value of the main steam pressure under different loads.

[0073] Specifically, in step 202, in order to comprehensively improve the operating efficiency and stability of the thermal system, it is necessary to obtain the operating data of the unit comprehensively and accurately. These data cover the detailed operating parameters of the unit under various working conditions, including but not limited to load level, main steam pressure, temperature, flow rate, and status information of various auxiliary equipment. Data collection relies on high-precision sensors and advanced data transmission technology to ensure the real-time and accuracy of data.

[0074] After successfully acquiring these operating data, the data analysis phase will begin. This process will conduct in-depth mining and detailed analysis of massive amounts of data. The focus of the analysis is to explore the intrinsic connection and changing rules between the main steam pressure and the unit efficiency, stability and emission performance under different load conditions. By comparing historical data, simulation and actual operating experience, we can more accurately understand how the main steam pressure should be set to achieve the best operating effect under different load levels. Finally, based on the results of data analysis, the optimal setting values ​​of the main steam pressure under different load conditions will be determined. These setting values ​​not only take into account the operating efficiency of the unit, but also fully take into account the stability and environmental protection requirements of the system. In actual operation, the unit will automatically adjust the main steam pressure according to these optimal setting values ​​to ensure that it can maintain an efficient, stable and environmentally friendly operating state under various load conditions.

[0075] Step 203, monitoring the extraction steam flow rate of the steam turbine, calculating the correlation value between the extraction steam flow rate and the main steam pressure, so as to analyze and determine the influence degree of the change of the extraction steam flow rate on the main steam pressure.

[0076] Specifically, in step 203, during the operation of the thermal system, in order to have a deeper understanding of the interaction between the steam extraction flow rate and the main steam pressure of the steam turbine, it is necessary to continuously and accurately monitor the steam extraction flow rate of the steam turbine. This monitoring process relies on advanced flow measurement technology and a real-time data acquisition system to ensure that we obtain accurate and reliable steam extraction flow rate data.

[0077] After successfully acquiring the extraction flow data, the correlation value between the extraction flow and the main steam pressure will be calculated. This value can quantitatively reflect the degree of association between the two, and can more intuitively understand how the change in extraction flow affects the main steam pressure. By analyzing this correlation value, the specific degree of influence of the change in extraction flow on the main steam pressure can be further determined. For example, when the extraction flow increases, a corresponding decrease in the main steam pressure may be observed; conversely, when the extraction flow decreases, the main steam pressure may increase. The clarification of this relationship is crucial to the optimal operation of the thermal system because it can predict and respond to the main steam pressure fluctuations that may be caused by changes in extraction flow.

[0078] Step 204 : determining the extraction flow required for pressure compensation of the boiler based on the degree of influence of the change in the extraction flow on the main steam pressure, and performing pressure compensation on the boiler according to the extraction flow.

[0079] Specifically, in step 204, in the process of refined management and optimization of the thermal system, the specific impact of the change in the steam turbine extraction flow rate on the main steam pressure has been clarified through detailed data analysis.

[0080] Based on the determined degree of influence of the extraction flow rate change on the main steam pressure, an accurate pressure compensation strategy will be further developed. The core of this strategy is to dynamically determine the extraction flow rate required for boiler pressure compensation based on the real-time changes in the extraction flow rate. The determination of this extraction flow rate not only considers the direct impact of the current extraction flow rate change on the main steam pressure, but also integrates multiple factors such as system thermal inertia, load forecasting, and boiler response characteristics to ensure the accuracy and effectiveness of compensation.

[0081] After determining the specific compensation extraction flow, the boiler will be accurately pressure compensated through advanced automatic control systems. This process may involve adjusting the boiler's fuel supply, changing the combustion method, adjusting the steam generation rate, and other means to ensure that the boiler's main steam pressure can quickly and stably reach the desired set value.

[0082] Step 205: Calculate the optimal rate of pressure change based on the load change signal and the main steam pressure, and adjust the main steam pressure of the boiler according to the optimal rate of pressure change.

[0083] As an achievable manner of this embodiment, the calculating the optimal rate of pressure change based on the load change signal and the main steam pressure includes:

[0084] Calculating a load change rate and a pressure change rate according to the load change signal and the main steam pressure;

[0085] The optimal pressure change rate is calculated using the load change rate and the pressure change rate.

[0086] Specifically, in step 205, in the daily operation of the thermal system, in order to ensure that the boiler main steam pressure can respond quickly and stably to changes in load, the optimal rate of pressure change is dynamically calculated and adjusted through the real-time acquired load change signal and the current main steam pressure data of the boiler, thereby accurately regulating the main steam pressure of the boiler.

[0087] High-precision sensors are used to capture load change signals in real time and monitor the main steam pressure of the boiler simultaneously. Then, advanced algorithms are used to calculate the load change rate, i.e. the increase or decrease of load per unit time, based on these real-time data. At the same time, the main steam pressure change rate is also calculated, i.e. the speed at which the main steam pressure rises and falls per unit time.

[0088] After obtaining the load change rate and pressure change rate, by comprehensively considering multiple factors such as the system's dynamic characteristics, thermal inertia, load forecasting, and energy efficiency, and using mathematical models and optimization algorithms, we can find an optimal pressure change rate that can quickly respond to load changes, maintain stable system operation, and take energy efficiency into consideration.

[0089] Once the optimal rate of pressure change is determined, the main steam pressure of the boiler will be adjusted immediately according to this rate. The adjustment process may involve multiple operations such as changing the fuel supply, adjusting the combustion method, and controlling the steam generation rate. Through precise regulation, it can ensure that the main steam pressure of the boiler changes smoothly at the optimal rate, thereby meeting the operating requirements of the steam turbine and improving the operating efficiency and stability of the entire thermal system.

[0090] It should be noted that the embodiments of the present disclosure may include multiple steps. For the convenience of description, these steps are numbered, but these numbers do not limit the execution time slots or execution order between the steps; these steps can be implemented in any order, and the embodiments of the present disclosure do not limit this.

[0091] Corresponding to the above pressure regulation method, the present invention also provides a pressure regulation device. Since the device embodiment of the present invention corresponds to the above method embodiment, details not disclosed in the device embodiment can be referred to the above method embodiment, and will not be described in detail in the present invention.

[0092] Figure 3 A schematic diagram of a pressure regulating device provided in an embodiment of the present disclosure is shown in FIG. Figure 3 As shown, including:

[0093] The judgment unit 31 is used to monitor the load change signal of the steam turbine and the main steam pressure of the boiler, and judge whether to lock the main steam pressure setting value based on the load change signal;

[0094] A determination unit 32, configured to determine an air extraction flow required to perform pressure compensation on the boiler when the main steam pressure setting value is locked, and perform pressure compensation on the boiler according to the air extraction flow;

[0095] The adjustment unit 33 is used to calculate the optimal rate of pressure change based on the load change signal and the main steam pressure, and adjust the main steam pressure of the boiler according to the optimal rate of pressure change.

[0096] The present disclosure provides a pressure regulating device, which monitors the load change signal of the steam turbine and the main steam pressure of the boiler, and determines whether to lock the main steam pressure setting value based on the load change signal; when it is determined that the main steam pressure setting value is locked, determines the exhaust flow required for pressure compensation of the boiler, and pressure compensates the boiler according to the exhaust flow; calculates the optimal pressure change rate based on the load change signal and the main steam pressure, and adjusts the main steam pressure of the boiler according to the optimal pressure change rate. Compared with the related art, the embodiment of the present disclosure monitors the load change signal of the turbine in real time, so that the system can respond to load changes more quickly and accurately, thereby maintaining the dynamic balance between the turbine and the boiler; after locking the main steam pressure set value, the system can control the main steam pressure of the boiler more stably, avoid pressure fluctuations caused by load changes, and improve the stability of the entire system; determine the exhaust flow rate that needs to be pressure compensated for the boiler, and pressure compensate the boiler accordingly, which can ensure that the boiler operates under the best operating conditions and improve combustion efficiency and thermal efficiency; adjust the main steam pressure of the boiler according to the optimal rate of pressure change calculated from the load change signal and the main steam pressure, which can avoid energy efficiency loss caused by too fast or too slow pressure change, and further optimize the operating efficiency of the boiler.

[0097] Furthermore, in a possible implementation of this embodiment, as Figure 4 As shown, the judging unit 31 includes:

[0098] A locking module 311 is used to lock the main steam pressure setting value if the load change signal exceeds a preset load threshold;

[0099] The unlocking module 312 is used to record the locking time, and unlock the main steam pressure setting value when the locking time exceeds the locking threshold.

[0100] Furthermore, in a possible implementation of this embodiment, as Figure 4 As shown, the device also includes:

[0101] The analysis unit 34 is used to obtain the operating data of the unit, and perform data analysis on the operating data to determine the optimal setting value of the main steam pressure under different loads.

[0102] Furthermore, in a possible implementation of this embodiment, as Figure 4 As shown, the determining unit 32 includes:

[0103] The first determination module 321 is used to monitor the extraction flow rate of the steam turbine, calculate the correlation value between the extraction flow rate and the main steam pressure, so as to analyze and determine the influence degree of the change of the extraction flow rate on the main steam pressure;

[0104] The second determination module 322 is used to determine the extraction flow rate required to perform pressure compensation on the boiler based on the degree of influence of the change in the extraction flow rate on the main steam pressure.

[0105] Furthermore, in a possible implementation of this embodiment, as Figure 4 As shown, the adjustment unit 33 includes:

[0106] A first calculation module 331 is used to calculate the load change rate and the pressure change rate according to the load change signal and the main steam pressure;

[0107] The second calculation module 332 is used to calculate the optimal pressure change rate by using the load change rate and the pressure change rate.

[0108] It should be noted that the above explanation of the method embodiment is also applicable to the device of this embodiment, and the principle is the same, which is not limited in this embodiment.

[0109] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.

[0110] Figure 5 A schematic block diagram of an example electronic device 400 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0111] like Figure 5As shown, the device 400 includes a computing unit 401, which can perform various appropriate actions and processes according to a computer program stored in a ROM (Read-Only Memory) 402 or a computer program loaded from a storage unit 408 to a RAM (Random Access Memory) 403. In the RAM 403, various programs and data required for the operation of the device 400 can also be stored. The computing unit 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An I / O (Input / Output) interface 405 is also connected to the bus 404.

[0112] A number of components in the device 400 are connected to the I / O interface 405, including: an input unit 406, such as a keyboard, a mouse, etc.; an output unit 407, such as various types of displays, speakers, etc.; a storage unit 408, such as a disk, an optical disk, etc.; and a communication unit 409, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 409 allows the device 400 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0113] The computing unit 401 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 401 include, but are not limited to, a CPU (Central Processing Unit), a GPU (Graphic Processing Units), various dedicated AI (Artificial Intelligence) computing chips, various computing units running machine learning model algorithms, a DSP (Digital Signal Processor), and any appropriate processor, controller, microcontroller, etc. The computing unit 401 performs the various methods and processes described above, such as a method for pressure regulation. For example, in some embodiments, the method for pressure regulation may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 408. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 400 via the ROM 402 and / or the communication unit 409. When the computer program is loaded into the RAM 403 and executed by the computing unit 401, one or more steps of the method described above may be performed. Alternatively, in other embodiments, the computing unit 401 may be configured to execute the aforementioned pressure regulation method in any other appropriate manner (for example, by means of firmware).

[0114] Various embodiments of the systems and techniques described above herein may be implemented in digital electronic circuit systems, integrated circuit systems, FPGAs (Field Programmable Gate Arrays), ASICs (Application-Specific Integrated Circuits), ASSPs (Application Specific Standard Products), SOCs (System On Chips), CPLDs (Complex Programmable Logic Devices), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: being implemented in one or more computer programs that may be executed and / or interpreted on a programmable system including at least one programmable processor that may be a special purpose or general purpose programmable processor that may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0115] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0116] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a RAM, a ROM, an EPROM (Electrically Programmable Read-Only-Memory) or a flash memory, an optical fiber, a CD-ROM (Compact Dis sc Read-Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0117] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (Cathode-Ray Tube) or LCD (Liquid Crystal Display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a trackball), through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0118] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: LAN (Local Area Network), WAN (Wide Area Network), the Internet, and blockchain networks.

[0119] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship between the client and the server is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services ("Virtual Private Server", or "VPS" for short). The server may also be a server of a distributed system, or a server combined with a blockchain.

[0120] It should be noted that artificial intelligence is a discipline that studies how computers can simulate certain human thought processes and intelligent behaviors (such as learning, reasoning, thinking, planning, etc.), and includes both hardware-level and software-level technologies. Artificial intelligence hardware technologies generally include technologies such as sensors, dedicated artificial intelligence chips, cloud computing, distributed storage, and big data processing; artificial intelligence software technologies mainly include computer vision technology, speech recognition technology, natural language processing technology, as well as machine learning / deep learning, big data processing technology, knowledge graph technology, and other major directions.

[0121] The various numerical numbers such as first and second involved in the present disclosure are only for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, but also indicate the order of precedence.

[0122] At least one in the present disclosure may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

[0123] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0124] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for pressure regulation, characterized in that: include: Monitor the load change signal of the steam turbine and the main steam pressure of the boiler, and determine whether to lock the main steam pressure setting value based on the load change signal; In the case of determining to lock the main steam pressure setting value, determining the air extraction flow required for pressure compensation of the boiler, and performing pressure compensation on the boiler according to the air extraction flow; Based on the load change signal and the main steam pressure, an optimal rate of pressure change is calculated, and the main steam pressure of the boiler is adjusted according to the optimal rate of pressure change.

2. The method according to claim 1, characterized in that The step of determining whether to lock the main steam pressure setting value based on the load change signal includes: If the load change signal exceeds a preset load threshold, locking the main steam pressure setting value; The locking time is recorded, and when the locking time exceeds the locking threshold, the main steam pressure setting value is unlocked.

3. The method according to claim 1, characterized in that The method further comprises: The operating data of the unit is obtained, and data analysis is performed on the operating data to determine the optimal setting value of the main steam pressure under different loads.

4. The method according to claim 1, characterized in that The step of determining the extraction flow rate for pressure compensation of the boiler and performing pressure compensation on the boiler according to the extraction flow rate includes: Monitoring the extraction steam flow rate of the steam turbine, calculating the correlation value between the extraction steam flow rate and the main steam pressure, so as to analyze and determine the influence degree of the change of the extraction steam flow rate on the main steam pressure; Based on the degree of influence of the change in the extraction flow rate on the main steam pressure, the extraction flow rate required for pressure compensation of the boiler is determined.

5. The method according to claim 1, characterized in that The calculating the optimal rate of pressure change based on the load change signal and the main steam pressure includes: Calculating a load change rate and a pressure change rate according to the load change signal and the main steam pressure; The optimal pressure change rate is calculated using the load change rate and the pressure change rate.

6. A pressure regulating device, characterized in that: include: A judgment unit, used for monitoring the load change signal of the steam turbine and the main steam pressure of the boiler, and judging whether to lock the main steam pressure setting value based on the load change signal; A determination unit, configured to determine an air extraction flow required to perform pressure compensation on the boiler when the main steam pressure setting value is determined to be locked, and to perform pressure compensation on the boiler according to the air extraction flow; The adjustment unit is used to calculate the optimal rate of pressure change based on the load change signal and the main steam pressure, and adjust the main steam pressure of the boiler according to the optimal rate of pressure change.

7. The device according to claim 6, characterized in that The judging unit comprises: A locking module, used for locking the main steam pressure setting value if the load change signal exceeds a preset load threshold; The unlocking module is used to record the locking time and unlock the main steam pressure setting value when the locking time exceeds the locking threshold.

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

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

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

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