Generator set load control method and device, electronic equipment and storage medium
By combining feedforward and feedback control, a comprehensive valve position adjustment command is generated, which solves the problem of low load adjustment response accuracy of generator sets and achieves faster, more accurate load adjustment and improved stability.
Patent Information
- Application Number
- CN202511669455.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-02-10
AI Technical Summary
In existing technologies, when the main steam pressure of a generator set changes, there is a deviation between the load command and the actual load, resulting in low load adjustment response accuracy of the AGC.
By introducing a feedforward control loop and combining it with a feedback control loop, a comprehensive valve position adjustment command is generated. Based on the main steam pressure value, the output power of the generator set is adjusted. Feedback control is performed using a PID algorithm block, and a feedforward adjustment signal is generated through the feedforward control loop. Combined with the generated comprehensive valve position adjustment command, the load of the generator set is adjusted in advance.
It improves the response speed and accuracy of generator load adjustment, reduces response delay, ensures the stability of generator under different operating conditions and the dynamic characteristics of the main controller, and avoids oscillation problems caused by excessive or insufficient adjustment.
Smart Images
Figure CN121507931A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power control, and in particular to a generator set load control method and device, electronic equipment and a storage medium. BACKGROUND
[0002] With the continuous expansion of new energy power scale, the generator set will gradually become the main complementary power source by continuously improving its operation flexibility. In order to accommodate more new energy power generation capacity, the generator set will bear more flexible peak regulation tasks in the future period. The external load demand is variable, and the generator set is required to participate in deep and rapid load adjustment in large quantities, so the requirement for AGC (Automatic Generation Control) in the generator set is higher and higher.
[0003] In related technologies, the load adjustment control scheme of AGC mainly uses PID feedback control and supplementary load feedforward control. In order to adapt to different working conditions, the PID is designed with variable parameters. However, when the main steam pressure value of the generator set changes, a deviation will be generated between the load instruction and the actual load of the generator set, and then the response accuracy of AGC on load adjustment is low. SUMMARY
[0004] Therefore, the present application provides a generator set load control method and device, electronic equipment and a storage medium, which improves the accuracy of load adjustment of the generator set.
[0005] In a first aspect, the embodiments of the present application provide a generator set load control method, the generator set comprising a main controller, the generator set load control method adjusting the output power of the generator set through the main controller, and the generator set load control method comprising: receiving a main steam pressure value, an AGC load instruction value and a primary frequency modulation load instruction of the generator set, and generating a feedforward control signal based on the main steam pressure value, the primary frequency modulation load instruction and the AGC load instruction value; receiving an actual power value of the generator set, and generating a feedback control signal based on the primary frequency modulation load instruction, the AGC load instruction value, the actual power value and a main steam pressure set value of the generator set; generating a comprehensive valve position adjustment instruction based on the feedforward control signal and the feedback control signal, and adjusting the output power of the generator set according to the comprehensive valve position adjustment instruction.
[0006] In the above technical solution, the feedforward control signal is generated based on the main steam pressure value, the primary frequency modulation load instruction and the AGC load instruction value, comprising: The corrected load instruction is obtained based on the AGC load instruction value and the primary frequency modulation load instruction; The intermediate control signal is obtained based on the corrected load instruction and the main steam pressure value; The initial feedforward control signal is obtained based on the intermediate control signal and a preset proportion; The feedforward control signal is obtained by filtering the initial feedforward control signal according to a preset control signal threshold.
[0007] In the technical solution, the feedback control signal is generated based on the primary frequency modulation load instruction, the AGC load instruction value, the actual generated power value and the main steam pressure set value of the generator set, and the feedback control signal includes: The main steam pressure set value is preprocessed to obtain an intermediate value; The corrected load instruction is obtained based on the AGC load instruction value and the primary frequency modulation load instruction; The intermediate actual generated power value is obtained by filtering the actual generated power value; The feedback control signal is generated based on the intermediate value, the corrected load instruction and the intermediate actual generated power value.
[0008] In the technical solution, the comprehensive valve position adjustment instruction is generated based on the feedforward control signal and the feedback control signal, and the output power of the generator set is adjusted according to the comprehensive valve position adjustment instruction, and the comprehensive valve position adjustment instruction includes: The feedforward control signal and the feedback control signal are added to obtain the comprehensive valve position adjustment instruction; The comprehensive valve position of the generator set is adjusted according to the comprehensive valve position adjustment instruction.
[0009] In the technical solution, the generator set includes a high regulating valve for adjusting the output power value, and the comprehensive valve position of the generator set is adjusted according to the comprehensive valve position adjustment instruction, and the comprehensive valve position adjustment instruction includes: The comprehensive valve position adjustment instruction is corrected by using a preconfigured linearity correction function, and a high regulating valve adjustment instruction is generated and outputted; The opening degree of the high regulating valve of the generator set is adjusted according to the high regulating valve adjustment instruction.
[0010] In the technical solution, the preset proportion is obtained by fitting data in a preset proportion fitting data set, and the proportion fitting data set includes multiple sets of proportion fitting data, and each set of proportion fitting data includes a historical main steam pressure value, a historical output power value and a historical high regulating valve opening degree of the generator set at the same time.
[0011] In the technical solution, the proportional fitting data set is obtained by screening a plurality of groups of historical data received, wherein each group of the historical data comprises a historical primary frequency regulation load instruction of the generator set and the historical main steam pressure value, the historical output power value, the historical high throttle opening, the historical main steam temperature and the historical comprehensive valve position change rate of the generator set at the same time, and the screening condition is that: the historical primary frequency regulation load instruction is not generated; the historical main steam temperature deviation t satisfies: |t| < 3 ℃; the historical comprehensive valve position change rate k satisfies: |k| < 1 % / Min; the historical main steam pressure value deviation a satisfies: |a| < 0.3 Mpa; the historical main steam pressure value change rate v satisfies: |v| < 0.2 Mpa / Min.
[0012] In a second aspect, an embodiment of the present application provides a generator set load control device, comprising: a feedforward control module configured to receive a main steam pressure value, an AGC load instruction value and a primary frequency regulation load instruction of the generator set, and generate a feedforward control signal based on the main steam pressure value, the primary frequency regulation load instruction and the AGC load instruction value; a feedback control module configured to receive an actual output power value of the generator set, and generate a feedback control signal based on the primary frequency regulation load instruction, the AGC load instruction value, the actual output power value and a main steam pressure set value of the generator set; an instruction generation module configured to generate a comprehensive valve position adjustment instruction based on the feedforward control signal and the feedback control signal, and adjust the output power of the generator set according to the comprehensive valve position adjustment instruction.
[0013] In a third aspect, an embodiment of the present application provides an electronic device, which comprises a processor and a memory, the memory stores programs or instructions executable on the processor, and the programs or instructions are executed by the processor to implement the steps of the method of the first aspect.
[0014] In a fourth aspect, an embodiment of the present application provides a readable storage medium, which stores programs or instructions, and the programs or instructions are executed by the processor to implement the steps of the method of the first aspect.
[0015] In a fifth aspect, an embodiment of the present application provides a chip, which comprises a processor and a communication interface, the communication interface and the processor are coupled, the processor is configured to run programs or instructions to implement the method of the first aspect.
[0016] In a sixth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method as described in the first aspect.
[0017] The embodiments provided in this application, based on the feedback control of primary frequency regulation load commands using a PID (Proportion-Integral-Derivative) algorithm block pre-configured in the generator set main controller, introduce a feedforward control loop. This feedforward control loop generates a feedforward adjustment signal based on the primary frequency regulation load command and combines it with the feedback control signal generated by the feedback control loop to generate a comprehensive valve position adjustment command. The generator set main controller adjusts the main steam flow of the generator set according to this comprehensive valve position adjustment command to adjust the generator set output power, thereby adjusting the generator set load. Through the design of the feedforward control loop, proactive adjustment of the generator set load is achieved, improving the response speed of the generator set main controller to changes in generator set load, reducing response delay, and thus improving the real-time performance of generator set load adjustment. Simultaneously, the combination of the feedforward and feedback control loops not only improves the accuracy of generator set load adjustment but also ensures the stability of generator set operation under different operating conditions. Since the feedforward control loop uses the main steam pressure as a reference, it ensures that the open-loop gain and dynamic characteristics of the generator set's main controller remain relatively stable under different pressure levels. This avoids oscillations caused by excessive regulation at high pressure or slow response due to insufficient regulation at low pressure.
[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This illustration shows one of the flowcharts of a generator set load control method according to an embodiment of this application; Figure 2 This is a second schematic flowchart of a generator set load control method according to an embodiment of this application; Figure 3 The third schematic flowchart of a generator set load control method according to an embodiment of this application is shown; Figure 4 A structural block diagram of a generator set load control device according to an embodiment of this application is shown; Figure 5 A structural block diagram of a generator set load control electronic device according to an embodiment of this application is shown. Detailed Implementation
[0020] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.
[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0022] The generator load control method provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0023] This application provides a generator set load control method, device, electronic equipment, and storage medium, which can be used in thermal power generation generator sets. The generator set includes a main controller, and the generator set load control method adjusts the output power of the generator set through the main controller. It is worth noting that the load adjustment of the generator set can be divided into two modes: manual adjustment and automatic adjustment. Operators can switch between the two modes according to the actual operating conditions of the generator set. The generator set load control method provided in this application is only applicable when the generator set is in automatic adjustment mode. In this application embodiment, the generator set's main controller is used as the execution subject for description.
[0024] Please refer to Figures 1 to 2 The generator set load control methods include: Step 101: The main controller of the generator set receives the main steam pressure value, AGC load command value and primary frequency regulation load command of the generator set, and generates a feedforward control signal based on the main steam pressure value, primary frequency regulation load command and AGC load command value.
[0025] The output load of a generator set changes during operation due to actual electricity consumption. The AGC load command value indicates the output load of the generator set under ideal, stable operation. The AGC load command value can be a command issued by the generator set to adjust its output power. The primary frequency regulation load command of the generator set is an adjustment command generated to limit the change in the generator set's output frequency when the output frequency deviates from the rated value. The main steam pressure value is the actual output pressure value of the generator set.
[0026] Step 102: The main controller of the generator set receives the actual power output of the generator set and generates a feedback control signal based on the primary frequency regulation load command, the AGC load command value, the actual power output value, and the main steam pressure set value of the generator set.
[0027] The actual power output of the generator set is the power output of the generator set during actual operation. The main steam pressure setpoint of the generator set is the output pressure of the generator set when it is running smoothly under ideal conditions. The main steam pressure setpoint can be manually set and configured by the staff into the main controller of the generator set, and the resulting feedback control signal is a specific value.
[0028] Step 103: The main controller of the generator set generates a comprehensive valve position adjustment command based on the feedforward control signal and the feedback control signal, and adjusts the output power of the generator set according to the comprehensive valve position adjustment command.
[0029] The feedforward control signal and the feedback control signal are added together to obtain the integrated valve position adjustment command. The integrated valve position represents the steam flow capacity of the generator set and can be expressed as a percentage from 0 to 100%.
[0030] Thus, the embodiments provided in this application, based on the feedback control of the primary frequency regulation load command using the PID algorithm block pre-configured in the main controller of the generator set, introduce a feedforward control loop. The feedforward control loop generates a feedforward adjustment signal based on the primary frequency regulation load command and combines the feedback control signal generated by the feedback control loop with the feedforward control signal to generate a comprehensive valve position adjustment command. The generator set main controller adjusts the main steam flow of the generator set according to the comprehensive valve position adjustment command to achieve load adjustment. Through the design of the feedforward control loop, advanced load adjustment of the generator set is achieved, improving the response speed of the generator set main controller to changes in generator set load, reducing response delay, and thus improving the real-time performance of generator set load adjustment. Simultaneously, the combination of the feedforward control loop and the feedback control loop not only improves the accuracy of generator set load adjustment but also ensures the stability of generator set operation under different operating conditions. Since the feedforward control loop uses the main steam pressure as a reference, it ensures that the open-loop gain and dynamic characteristics of the generator set's main controller remain relatively stable under different pressure levels. This avoids oscillations caused by excessive regulation at high pressure or slow response due to insufficient regulation at low pressure.
[0031] In some embodiments, such as Figure 3 As shown, step 101 can be achieved through steps 1011 to 1014: Step 1011: The main controller of the generator set obtains the corrected load command based on the AGC load command value and the primary frequency regulation load command.
[0032] In step 1012, the main controller of the generator set obtains an intermediate control signal based on the corrected load command and main steam pressure value.
[0033] Step 1013: The main controller of the generator set obtains the initial feedforward control signal based on the intermediate control signal and the preset ratio.
[0034] Step 1014: The main controller of the generator set filters the initial feedforward control signal according to the preset control signal threshold to obtain the feedforward control signal.
[0035] Specifically, the generator set's main controller sums the AGC load command value and the primary frequency regulation load command to obtain a corrected load command. Then, it divides the corrected load command by the main steam pressure value to obtain an intermediate control signal, which is a single value. This intermediate control signal is amplified according to a preset ratio to obtain the initial feedforward control signal. Since abnormal data inevitably occurs during generator set operation, a filtering stage can be set after obtaining the initial feedforward signal, establishing a control signal threshold to filter the initial feedforward signal.
[0036] In this way, the generator set's main controller can immediately calculate a corresponding valve position command the instant it senses a change in load command or frequency regulation requirement. This improves the main controller's response speed to load changes and reduces response delay. Dividing the corrected load command by the main steam pressure value allows the feedforward control loop to automatically correct the valve position when the main steam pressure value changes. This counteracts the impact of main steam pressure fluctuations on output, ultimately ensuring a small deviation between the generator set's actual output load and the AGC load command value, thus improving the accuracy of the feedforward control signal. Setting a control signal threshold for the initial feedforward control signal can filter out potential spikes and glitches in the generated initial feedforward control signal, preventing frequent and large-amplitude movements of the integrated valve position, thereby making the generator set's operation smoother.
[0037] In some embodiments, step 102 can be implemented by steps 1021 to 1024: Step 1021: The main controller of the generator set preprocesses the main steam pressure setpoint to obtain an intermediate value.
[0038] Step 1022: The main controller of the generator set obtains the corrected load command based on the AGC load command value and the primary frequency regulation load command.
[0039] Step 1023: The main controller of the generator set filters the actual power output value to obtain an intermediate actual power output value.
[0040] Step 1024: The main controller of the generator set generates a feedback control signal based on the intermediate value, the corrected load command, and the intermediate actual power value.
[0041] Specifically, a first function and a second function can be pre-configured in the main controller of the generator set. The main controller transforms the main steam pressure setpoint using the first and second functions to obtain a first intermediate value and a second intermediate value, respectively. The first intermediate value is used as the proportional value, and the second intermediate value is used as the integral time, which are then input into the PID algorithm block. The first and second functions can be piecewise linear functions. The main controller sums the AGC load command value and the primary frequency regulation load command to obtain a corrected load command, which is then input into the PID algorithm block as the setpoint. A power threshold is pre-set in the main controller to filter the actual power output of the generator set. The intermediate actual power output value obtained after filtering is input into the PID algorithm block as the process value. The PID algorithm block calculates based on the above data and generates a feedback control signal.
[0042] By using a PID algorithm block to generate feedback control signals and apply them to the generator load, the adaptability of the generator load control method can be improved. Furthermore, by combining this feedback control signal with the feedforward control signal generated by the feedforward control loop, the accuracy of load adjustment can be enhanced. Filtering the actual power output value can remove potential spikes and glitches, resulting in smoother operation of subsequent integrated valve positions, reducing unnecessary adjustments, and indirectly extending the generator set's service life.
[0043] In some embodiments, step 103 can be implemented by steps 1031 to 1032: Step 1031: The main controller of the generator set adds the feedforward control signal and the feedback control signal to obtain a comprehensive valve position adjustment command; Step 1032: The main controller of the generator set adjusts the integrated valve position of the generator set according to the integrated valve position adjustment command.
[0044] The generator set's main controller sums the feedforward and feedback control signals to generate a comprehensive valve position adjustment command. Based on this command, the main controller can adjust the generator set's steam flow to regulate the generator set's load.
[0045] In summary, the generator set's main controller integrates feedforward and feedback control signals to generate a comprehensive valve position adjustment command. The feedforward control signal has already counteracted the interference caused by fluctuations in the main steam pressure, while the feedback control signal can adaptively handle other secondary interferences. The combination of the two improves the accuracy of load adjustment for the generator set and enables the generator set to operate more smoothly even in complex operating environments. This reduces wear caused by drastic changes in operating conditions and indirectly extends the generator set's service life.
[0046] In some embodiments, the generator set includes a high-voltage control valve for regulating the output power value. Step 1032 can be implemented through steps 1032a to 1032b: Step 1032a: The main controller of the generator set uses a pre-configured linearity correction function to correct the integrated valve position adjustment command, and then generates and outputs the high-pressure valve adjustment command.
[0047] Step 1032b: The main controller of the generator set controls the generator set to adjust the opening of the high-pressure valve according to the high-pressure valve adjustment command.
[0048] Furthermore, the actual target of the integrated valve position adjustment command can be the high-pressure regulating valve on the generator set. Because the high-pressure regulating valve itself has non-linear characteristics, to ensure a linear relationship between the integrated valve position and steam flow, the integrated valve position adjustment command must be processed by a pre-configured linearity correction function related to the flow characteristics before it can be applied to the high-pressure regulating valve on the generator set. Specifically, the generator set's main controller processes the integrated valve position adjustment command using the pre-configured linearity correction function to obtain the high-pressure regulating valve adjustment command. Then, the generator set's main controller can control the required opening degree of the high-pressure regulating valve according to the high-pressure regulating valve adjustment command.
[0049] Accordingly, based on the linearity correction function, the comprehensive valve position adjustment command reflecting the steam flow adjustment range of the generator set is converted into adjustment commands for specific steam flow adjustment components on the generator set. While ensuring the accuracy of the comprehensive valve position command, the commands generated by the generator set main controller are made more explicit and feasible, thereby improving the accuracy and stability of the generator set load control method. In some embodiments, the preset ratio is obtained by the main controller of the generator set fitting data in a pre-generated proportional fitting dataset. The proportional fitting dataset includes multiple sets of proportional fitting data, each set of proportional fitting data including the historical main steam pressure value, historical output power value, and historical high-pressure valve opening of the generator set at the same time.
[0050] Specifically, the preset ratio is to use the ratio between the historical output power value and the historical main steam pressure value at the same moment as the X-axis and the historical high-pressure valve opening at the corresponding moment as the Y-axis for data fitting. The coefficients of the obtained image are configured in the main controller of the generator set as the preset ratio to generate the initial feedforward control signal.
[0051] The preset ratio is fitted based on the actual data of the generator set, so that the obtained coefficient K can take into account the equipment characteristics of the generator set, thereby improving the accuracy of the generated feedforward control signal, providing a guarantee for high-precision adjustment of the generator set load, and making the load adjustment of the generator set more accurate.
[0052] In some embodiments, the proportional fitting dataset is obtained by the generator set main controller through filtering multiple sets of received historical data. Each set of historical data includes whether the generator set has a historical primary frequency regulation load command at the same time, as well as the generator set's historical main steam pressure value, the rate of change of the historical main steam pressure value, the historical main steam temperature, and the rate of change of the historical integrated valve position. The filtering criteria are as follows: No historical primary frequency regulation load command generated; The historical main steam temperature deviation t satisfies: |t| < 3℃; The historical overall valve position change rate k satisfies: |k| < 1% / Min; The deviation 'a' of the historical main steam pressure value satisfies: |a| < 0.3 MPa; The rate of change v of the historical main steam pressure value satisfies: |v| < 0.2 MPa / Min.
[0053] Furthermore, the data used to fit the preset ratio should be selected from the ratio fitting data when the generator set is in a stable operating state. Therefore, the obtained ratio fitting data needs to be screened when generating the ratio fitting dataset. Ideally, when the generator set is running stably, the output load of the generator set should be the same as the preset AGC load command value, that is, no historical primary frequency regulation load command is generated. However, judging the operating state of the generator set solely by whether there is a historical primary frequency regulation load command when generating the ratio fitting dataset is too one-sided. Therefore, in addition to this, it is also necessary to set screening ranges for the historical main steam pressure value, the rate of change of the historical main steam pressure value, the historical main steam temperature, and the rate of change of the historical integrated valve position of the generator set to ensure that the ratio fitting data in the generated ratio fitting dataset is data obtained when the generator set is running stably.
[0054] By filtering the proportional fitting data using preset screening criteria, the errors inherent in the preset ratio can be reduced, making the preset ratio more accurate. Since the proportional fitting data used are all derived from real-world data during generator operation, the resulting preset ratio better reflects the equipment characteristics of the generator set, further reducing errors caused by differences in equipment operation within the generator set. This improves the accuracy of the generated feedforward control signal, thereby enabling more precise load adjustments to the generator set.
[0055] Furthermore, as a specific implementation of the above-mentioned generator set load control method, this application provides a generator set load control device. For example... Figure 4 As shown, the generator set load control device includes: a feedforward control module, a feedback control module, and a command generation module.
[0056] The feedforward control module is used to receive the main steam pressure value, AGC load command value and primary frequency regulation load command of the generator set, and generate a feedforward control signal based on the main steam pressure value, primary frequency regulation load command and AGC load command value.
[0057] The feedback control module is used to receive the actual power output of the generator set and generate a feedback control signal based on the primary frequency regulation load command, AGC load command value, actual power output, and the main steam pressure setpoint of the generator set.
[0058] The instruction generation module is used to generate a comprehensive valve position adjustment instruction based on the feedforward control signal and the feedback control signal, and to adjust the output power of the generator set according to the comprehensive valve position adjustment instruction.
[0059] The generator load control device in this application embodiment can be an electronic device or a component of an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific type of device.
[0060] The generator set load control device provided in this application embodiment can achieve... Figures 1 to 3 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.
[0061] This application also provides an electronic device, such as... Figure 5 As shown, the electronic device 500 includes a processor 501 and a memory 502. The memory 502 stores a program or instruction that can run on the processor 501. When the program or instruction is executed by the processor 501, it implements the various steps of the above-described generator set load control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.
[0062] The memory 502 can be used to store software programs and various data. The memory 502 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 502 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 502 in this embodiment includes, but is not limited to, these and any other suitable types of memory.
[0063] Processor 501 may include one or more processing units; optionally, processor 501 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 501.
[0064] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described generator set load control method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.
[0065] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described generator set load control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.
[0066] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.
[0067] This application also provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the generator set load control method embodiment described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.
[0068] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0069] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A generator set load control method, characterized in that, The generator set includes a main controller, and the generator set load control method adjusts the output power of the generator set through the main controller. The generator set load control method includes: Receive the main steam pressure value, AGC load command value, and primary frequency regulation load command of the generator set, and generate a feedforward control signal based on the main steam pressure value, the primary frequency regulation load command, and the AGC load command value; Receive the actual power output of the generator set, and generate a feedback control signal based on the primary frequency regulation load command, the AGC load command value, the actual power output, and the main steam pressure setpoint of the generator set; A comprehensive valve position adjustment command is generated based on the feedforward control signal and the feedback control signal, and the output power of the generator set is adjusted according to the comprehensive valve position adjustment command.
2. The generator set load control method according to claim 1, characterized in that, The generation of feedforward control signals based on the main steam pressure value, the primary frequency regulation load command, and the AGC load command value includes: The corrected load command is obtained based on the AGC load command value and the primary frequency regulation load command; An intermediate control signal is obtained based on the revised load command and the main steam pressure value; The initial feedforward control signal is obtained based on the intermediate control signal and the preset ratio; The initial feedforward control signal is filtered according to a preset control signal threshold to obtain the feedforward control signal.
3. The generator set load control method according to claim 1, characterized in that, The generation of feedback control signals based on the primary frequency regulation load command, the AGC load command value, the actual power output value, and the main steam pressure setpoint of the generator set includes: The main steam pressure setpoint is preprocessed to obtain an intermediate value; The corrected load command is obtained based on the AGC load command value and the primary frequency regulation load command; The actual power value is filtered to obtain an intermediate actual power value; The feedback control signal is generated based on the intermediate value, the corrected load command, and the intermediate actual power value.
4. The generator set load control method according to any one of claims 1 to 3, characterized in that, The process of generating a comprehensive valve position adjustment command based on the feedforward control signal and the feedback control signal, and adjusting the output power of the generator set according to the comprehensive valve position adjustment command, includes: The feedforward control signal and the feedback control signal are added together to obtain the integrated valve position adjustment command; The integrated valve position of the generator set is adjusted according to the integrated valve position adjustment command.
5. The generator set load control method according to claim 4, characterized in that, The generator set includes a high-voltage control valve for adjusting the output power value. The adjustment of the integrated valve position of the generator set according to the integrated valve position adjustment command includes: The integrated valve position adjustment command is corrected using a pre-configured linearity correction function, thereby generating and outputting a high-adjustment valve adjustment command; The generator set is controlled to adjust the opening of the high-adjustment valve according to the adjustment command of the high-adjustment valve.
6. The generator set load control method according to claim 2, characterized in that, The preset ratio is obtained by fitting data from a pre-generated proportional fitting dataset. The proportional fitting dataset includes multiple sets of proportional fitting data, and each set of proportional fitting data includes the historical main steam pressure value, historical output power value, and historical high-pressure valve opening of the generator set at the same time.
7. The generator set load control method according to claim 6, characterized in that, The proportional fitting dataset is obtained by filtering multiple sets of received historical data. Each set of historical data includes the historical primary frequency regulation load command of the generator set at the same moment, as well as the historical main steam pressure value, historical output power value, historical high-pressure valve opening, historical main steam temperature, and historical comprehensive valve position change rate of the generator set. The filtering criteria are as follows: No such historical primary frequency regulation load command was generated; The historical main steam temperature deviation t satisfies: |t| < 3℃; The historical comprehensive valve position change rate k satisfies: |k| < 1% / Min; The deviation 'a' of the historical main steam pressure value satisfies: |a| < 0.3 MPa; The rate of change v of the historical main steam pressure value satisfies: |v| < 0.2 MPa / Min.
8. A generator set load control device, characterized in that, include: The feedforward control module is used to receive the main steam pressure value, AGC load command value and primary frequency regulation load command of the generator set, and generate a feedforward control signal based on the main steam pressure value, the primary frequency regulation load command and the AGC load command value; The feedback control module is used to receive the actual power output value of the generator set and generate a feedback control signal based on the primary frequency regulation load command, the AGC load command value, the actual power output value, and the main steam pressure set value of the generator set. The instruction generation module is used to generate a comprehensive valve position adjustment instruction based on the feedforward control signal and the feedback control signal, and to adjust the output power of the generator set according to the comprehensive valve position adjustment instruction.
9. An electronic device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that run on the processor, the program or instructions being executed by the processor to implement the steps of the generator load control method as described in any one of claims 1 to 7.
10. A readable storage medium having a program or instructions stored thereon, characterized in that, When the program or instructions are executed by the processor, they implement the steps of the generator load control method as described in any one of claims 1 to 7.