Primary frequency modulation control method and device, electronic equipment and storage medium

Abstract

The invention discloses a primary frequency modulation control method and device, electronic equipment and a storage medium, and the method and device are applied to the electronic equipment, are used for controlling the real-time load of a thermal generator set, and specifically comprise the steps: obtaining a plurality of first measurement and control parameters and a plurality of second measurement and control parameters of the thermal generator set; processing the plurality of first measurement and control parameters based on a slip-load curve to obtain a steam turbine valve position comprehensive instruction; processing the plurality of second measurement and control parameters to obtain a small-frequency-difference comprehensive feed-forward quantity; and executing control valve control on the steam turbine of the thermal generator set based on the steam turbine valve position comprehensive instruction and the small-frequency-difference comprehensive feed-forward quantity. The small-frequency-difference comprehensive feed-forward quantity is superposed to the steam turbine valve position comprehensive instruction to drive each control valve of the steam turbine to act, so that the real-time load of the thermal generator set is controlled to rise and fall, and the adjusting effect of primary frequency modulation is improved.

Description

Technical Field

[0001] The present application relates to the technical field of power grids, and more specifically, to a primary frequency modulation control method, device, electronic device and storage medium. Background Art

[0002] In recent years, my country's power industry has developed very rapidly. Although there are some nuclear power generation and rapidly developing wind power generation and photovoltaic power generation, thermal power generation is still the main force of power supply and still occupies most of the power market in my country. A modern thermal power plant is a large and complex factory that produces electricity and heat energy. It consists of five parts: fuel system, combustion system, steam-water system, electrical system and control system. In order to produce electricity and heat energy, the five major systems must be coordinated and operated in accordance with a series of procedures and regulations. The basic requirement for the coordinated operation of a thermal power plant is to ensure the quality indicators of electricity under the premise of economic and safe operation, that is, to adjust the operating parameters of the generator set to ensure the rated values ​​of voltage and frequency in the case of load changes to meet user requirements.

[0003] As the power system becomes increasingly large and the grid structure becomes increasingly complex, various short circuit and load shedding accidents often occur, causing large frequency fluctuations in the power system. Therefore, in order to ensure the stability of the power system frequency, it is necessary to adjust the grid frequency in real time. Specifically, the generator speed regulation system changes the unit output according to the change of the grid frequency to stabilize the grid frequency at the nominal frequency. Frequency regulation is divided into primary frequency regulation and secondary frequency regulation.

[0004] Among them, primary frequency regulation refers to the ability of the generator sets participating in the primary frequency regulation to quickly increase or decrease the load in a short period of time when the grid frequency exceeds a certain range of the nominal frequency, and to use the heat storage of the units to quickly respond to changes in the grid frequency, so that the grid frequency can return to a new balance and stability. Primary frequency regulation, as a random process, is an important means to maintain grid stability. The current technical solutions still have certain difficulties in solving the primary frequency regulation failures under different load deviations and small frequency differences of the units, and because the heat storage of the units under different pressures is different, the regulation effect of the primary frequency regulation is poor. Summary of the invention

[0005] In view of this, the present application provides a primary frequency regulation control method, device, electronic device and storage medium for controlling the real-time load of a thermal power generator to improve the regulation effect of the primary frequency regulation.

[0006] In order to achieve the above objectives, the proposed solution is as follows:

[0007] A primary frequency modulation control method is applied to electronic equipment and is used to control the real-time load of a thermal power generating set. The primary frequency modulation control method comprises the following steps:

[0008] Acquire a plurality of first measurement and control parameters and a plurality of second measurement and control parameters of the thermal power generating set;

[0009] Processing the plurality of first measurement and control parameters based on the slip-load curve to obtain a comprehensive turbine valve position instruction;

[0010] Processing the plurality of second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount;

[0011] Based on the turbine valve position comprehensive instruction and the small frequency difference comprehensive feedforward amount, the steam turbine of the thermal power generating set is subjected to valve modulation control.

[0012] Optionally, the multiple first measurement and control parameters include rated load, fast-motion slow-return speed, rated speed, load command and actual load.

[0013] Optionally, the processing of the plurality of first measurement and control parameters based on the slip-load curve to obtain a comprehensive instruction for the valve position of the steam turbine comprises the following steps:

[0014] Based on the slip-load curve, the speed difference between the fast-acting slow-returning speed and the rated speed is processed to obtain the frequency-modulated load action amount;

[0015] Normalizing the frequency modulation load action amount, the load instruction and the actual load based on the rated load;

[0016] Calculate the difference between the normalized load instruction and the actual load to obtain the load deviation;

[0017] The normalized frequency modulation load action amount and the load deviation are superimposed and then subjected to PID processing to obtain a valve position action instruction;

[0018] Processing the load instruction based on the load-valve tuning coefficient to obtain a valve tuning instruction;

[0019] The valve position action instruction and the valve regulating instruction are superimposed to obtain the turbine valve position comprehensive instruction.

[0020] Optionally, the multiple second measurement and control parameters include small frequency difference value, main steam pressure, speed inequality rate, frequency modulation action time, rated speed and frequency modulation small frequency difference calculated load.

[0021] Optionally, the processing of the multiple second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount comprises the steps of:

[0022] Processing the load deviation based on a load deviation feedforward function to obtain a first parameter;

[0023] Processing the small frequency difference value based on the frequency difference feedforward function to obtain a second parameter;

[0024] Processing the main steam pressure based on a main steam pressure feedforward function to obtain a third parameter;

[0025] Performing a product operation on the product of the first parameter and the second parameter and the third parameter to obtain a fourth parameter;

[0026] Processing the frequency modulation action time based on the frequency modulation action time feedforward function to obtain a fifth parameter;

[0027] The frequency modulation load action amount is multiplied by the speed inequality rate to obtain the speed deviation;

[0028] Dividing the speed deviation by the rated speed to obtain a sixth parameter;

[0029] Calculating the sixth parameter based on the slip feedforward function to obtain a seventh parameter;

[0030] The frequency modulation small frequency difference calculation load is processed based on the small frequency difference-load feedforward function, and the processing result is proportionally calculated to obtain an eighth parameter;

[0031] Adding the seventh parameter to the eighth parameter to obtain a ninth parameter;

[0032] Performing a product operation on the fifth parameter and the ninth parameter to obtain a tenth parameter;

[0033] The fourth parameter is multiplied by the tenth parameter to obtain the small frequency difference comprehensive feedforward amount.

[0034] A primary frequency modulation control device is applied to electronic equipment and is used to control the real-time load of a thermal power generating set. The primary frequency modulation control device comprises:

[0035] A parameter acquisition module is configured to acquire a plurality of first measurement and control parameters and a plurality of second measurement and control parameters of the thermal power generating set;

[0036] A first calculation module is configured to process the plurality of first measurement and control parameters based on a slip-load curve to obtain a comprehensive instruction for a steam turbine valve position;

[0037] A second calculation module is configured to process the plurality of second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount;

[0038] The control execution module is configured to perform valve regulation control on the steam turbine of the thermal power generating set based on the steam turbine valve position comprehensive instruction and the small frequency difference comprehensive feedforward amount.

[0039] Optionally, the plurality of first measurement and control parameters include rated load, fast-motion slow-return speed, rated speed, load instruction and actual load, and the first calculation module is configured as follows:

[0040] The speed difference between the fast-moving slow-returning speed and the rated speed is processed based on the slip-load curve to obtain the frequency-modulated load action amount;

[0041] Normalizing the frequency modulation load action amount, the load instruction and the actual load based on the rated load;

[0042] Calculate the difference between the normalized load instruction and the actual load to obtain the load deviation;

[0043] The normalized frequency modulation load action amount and the load deviation are superimposed and then subjected to PID processing to obtain a valve position action instruction;

[0044] Processing the load instruction based on the load-valve tuning coefficient to obtain a valve tuning instruction;

[0045] The valve position action instruction and the valve regulating instruction are superimposed to obtain the turbine valve position comprehensive instruction.

[0046] Optionally, the plurality of second measurement and control parameters include a small frequency difference value, a main steam pressure, a speed inequality rate, a frequency modulation action time, a rated speed, and a frequency modulation small frequency difference calculation load, and the second calculation module is configured as follows:

[0047] Processing the load deviation based on a load deviation feedforward function to obtain a first parameter;

[0048] Processing the small frequency difference value based on the frequency difference feedforward function to obtain a second parameter;

[0049] Processing the main steam pressure based on a main steam pressure feedforward function to obtain a third parameter;

[0050] Performing a product operation on the product of the first parameter and the second parameter and the third parameter to obtain a fourth parameter;

[0051] Processing the frequency modulation action time based on the frequency modulation action time feedforward function to obtain a fifth parameter;

[0052] The frequency modulation load action amount is multiplied by the speed inequality rate to obtain the speed deviation;

[0053] Dividing the speed deviation by the rated speed to obtain a sixth parameter;

[0054] Calculating the sixth parameter based on the slip feedforward function to obtain a seventh parameter;

[0055] The frequency modulation small frequency difference calculation load is processed based on the small frequency difference-load feedforward function, and the processing result is proportionally calculated to obtain an eighth parameter;

[0056] Adding the seventh parameter to the eighth parameter to obtain a ninth parameter;

[0057] Performing a product operation on the fifth parameter and the ninth parameter to obtain a tenth parameter;

[0058] The fourth parameter is multiplied by the tenth parameter to obtain the small frequency difference comprehensive feedforward amount.

[0059] An electronic device is applied to a thermal power generating set, the electronic device comprising at least one processor and a memory connected to the processor, wherein:

[0060] The memory is used to store computer programs or instructions;

[0061] The processor is used to execute the computer program or instruction so that the electronic device implements the primary frequency modulation control method as described above.

[0062] A storage medium is applied to an electronic device, the storage medium carries one or more computer programs, and the one or more computer programs can be executed by the electronic device, so that the electronic device implements the primary frequency modulation control method as described above.

[0063] It can be seen from the above technical scheme that the present application discloses a primary frequency modulation control method, device, electronic device and storage medium. The method and device are applied to electronic devices and are used to control the real-time load of a thermal power generator set, specifically to obtain multiple first measurement and control parameters and multiple second measurement and control parameters of the thermal power generator set; process the multiple first measurement and control parameters based on the slip-load curve to obtain a comprehensive instruction for the valve position of a steam turbine; process the multiple second measurement and control parameters to obtain a small frequency difference comprehensive feedforward; and perform valve control on the steam turbine of the thermal power generator set based on the comprehensive instruction for the valve position of the steam turbine and the comprehensive feedforward of the small frequency difference. By superimposing the comprehensive feedforward of the small frequency difference on the comprehensive instruction for the valve position of the steam turbine to drive the various valve actions of the steam turbine, the real-time load of the thermal power generator set can be raised and lowered, thereby improving the regulation effect of the primary frequency modulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 A flow chart of a primary frequency modulation control method according to an embodiment of the present application;

[0066] Figure 2 A schematic diagram of a primary frequency modulation control method according to an embodiment of the present application;

[0067] Figure 3 A block diagram of a primary frequency modulation control device according to an embodiment of the present application;

[0068] Figure 4 A block diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0070] Figure 1 This is a flow chart of a primary frequency modulation control method according to an embodiment of the present application.

[0071] like Figure 1 As shown, the primary frequency modulation control method provided in this embodiment is applied to electronic equipment of a thermal power plant, and is used to control the actual load of a thermal power generating unit, so as to realize the accurate implementation of primary frequency modulation. The electronic equipment can be understood as a computer, server, cloud platform or distributed control system DCS of the thermal power generating unit with data computing and information processing capabilities. The primary frequency modulation control method comprises the following steps:

[0072] S1. Acquire a plurality of first measurement and control parameters and a plurality of second measurement and control parameters of a thermal power generating set.

[0073] The measurement and control parameters here include real-time parameters or historical parameters obtained by detecting or monitoring the thermal power generating set, and also include control instructions or control parameters issued by the host computer or other control systems. Specifically, the multiple first measurement and control parameters include but are not limited to rated load, fast-motion slow-return speed, rated speed, load instruction and actual load; the multiple second measurement and control parameters include but are not limited to small frequency difference value, main steam pressure, speed inequality, frequency modulation action time, rated speed and frequency modulation small frequency difference calculated load.

[0074] S2. Process the plurality of first measurement and control parameters to obtain a comprehensive instruction on the valve position of the steam turbine.

[0075] The steam turbine valve position comprehensive instruction includes multiple instructions for controlling multiple valves on the steam turbine. In the present application, the corresponding first measurement and control parameter is processed based on the slip-load curve to obtain the comprehensive instruction. Specifically, the present application obtains the steam turbine valve position comprehensive instruction through the following steps.

[0076] First, based on the slip-load curve F(X)1, the speed difference between the fast-acting slow-return speed and the rated speed is processed to obtain the frequency-modulated load action amount. The data of the slip-load curve is shown in the following table:

[0077] Slip (r) -150 -10.1 -4 -3.3 -2.2 -2.18 load -148 -7.8 -2.1 -1.8 -0.23 0 Slip (r) 2.18 2.2 3.3 4 10.1 150 load 0 0.26 2 2.2 7.8 148

[0078] Then, the frequency modulation load action amount, load instruction and actual load are normalized based on the rated load. That is, the frequency modulation load action amount, load instruction and actual load are processed using the rated load as the dividend to obtain a value between 0 and 1. The rated load of this embodiment includes but is not limited to 660Mw.

[0079] Then, the difference between the normalized load instruction and the actual load is calculated to obtain the load deviation.

[0080] Then, the normalized frequency-modulated load action amount and the above-mentioned load deviation are superimposed and PID processed to obtain the valve position action instruction; the so-called PID processing means taking the frequency-modulated load action amount and the load deviation as the input of the PID controller, and then automatically adjusting them during the processing, and using the output of the PID controller as the valve position action instruction.

[0081] Then, the load instruction is processed based on the load-throttle coefficient to obtain the throttle instruction.

[0082] Finally, the valve position action command and the regulating command are superimposed to obtain the comprehensive turbine valve position command.

[0083] S3. Process the plurality of second measurement and control parameters to obtain a small frequency difference comprehensive feedforward quantity.

[0084] That is, the corresponding measurement and control parameters are processed based on multiple feedforward functions to obtain the small frequency difference comprehensive feedforward. The feedforward functions here are load deviation feedforward function F(X)2, frequency difference feedforward function F(X)3, main steam pressure feedforward function F(X)4, frequency modulation action time feedforward function F(X)7, slip feedforward function F(X)5 and small frequency difference-load feedforward function F(X)6. The specific processing process is as follows:

[0085] First, the load deviation is processed based on the load deviation feedforward function to obtain the first parameter. The data of the load deviation feedforward function is shown in the following table.

[0086] Load deviation "mark 1" -0.015 -0.009 -0.0068 -0.003 -0.0015 Feed forward coefficient 1.22 1.18 1.15 1.12 1.1 Load deviation "mark 1" 0.0015 0.0015 0.0068 0.009 0.015 Feed forward coefficient -1.1 -1.12 1.15 1.18 1.22

[0087] Then, the small frequency difference value is processed based on the frequency difference feedforward function to obtain the second parameter; the data of the frequency difference feedforward function is shown in the following table.

[0088] Small frequency difference (HZ) -0.3 0.04 0.022 0.01 0.003 Feed forward coefficient 1 1.1 1.15 1.2 1.3 Small frequency difference (HZ) 0.003 0.01 0.022 0.04 -0.3 Feed forward coefficient 1.3 1.2 1.15 1.1 1

[0089] Then, the main steam pressure is processed based on the main steam pressure feedforward function to obtain the third parameter; the data of the main steam pressure feedforward function is shown in the following table:

[0090] Main steam pressure (bar) 0 130 180 230 300 250 260 Feedforward coefficient output 30 40 32 25 22 20 20

[0091] Then, the product of the first parameter and the second parameter is multiplied by the third parameter to obtain the fourth parameter.

[0092] Then, the frequency modulation action time is processed based on the frequency modulation action time feedforward function to obtain the fifth parameter; the data of the frequency modulation action time feedforward function is shown in the following table:

[0093] Frequency modulation action time (s) 0 5 15 45 60 Feedforward coefficient output 1.1 1.11 1.17 1.15 1.1

[0094] Then, the speed deviation is obtained by multiplying the frequency-modulated load action amount and the speed inequality rate.

[0095] Then, the speed deviation is divided by the rated speed to obtain the sixth parameter.

[0096] Then, the sixth parameter is calculated based on the slip feedforward function to obtain the seventh parameter; the data of the slip feedforward function are shown in the following table:

[0097] Slip(RPM) -20 -6 -3 -2.2 -2 Feed forward coefficient 1 1 1.2 1.1 1 Slip(RPM) 2 2.15 3 6 20 Feed forward coefficient 1 1.1 1.2 1 1

[0098] Then, the load calculated by the small frequency difference of frequency modulation is processed based on the small frequency difference-load feedforward function, and the processing result is proportionally calculated to obtain the eighth parameter; the data of the small frequency difference-load feedforward function is shown in the following table:

[0099] Small frequency difference calculation load (Mw) -11.73 -6.45 -2.93 -0.8 -0.3 Feed forward coefficient 1 1.1 1.11 1.13 1.15 Small frequency difference calculation load (Mw) 0.3 0.8 2.9 6.45 11.73 Feed forward coefficient 1.15 1.13 1.11 1.1 1

[0100] Then, the seventh parameter is added to the eighth parameter to obtain the ninth parameter;

[0101] Then, the fifth parameter is multiplied by the ninth parameter to obtain the tenth parameter;

[0102] Finally, the fourth parameter is multiplied by the tenth parameter to obtain the small frequency difference comprehensive feedforward amount.

[0103] S4. Implement control based on the comprehensive command of the turbine valve position and the comprehensive feedforward quantity with small frequency difference.

[0104] The small frequency difference comprehensive feedforward quantity is added to the comprehensive command of the turbine valve position to drive the action of each turbine regulating valve, so as to control the increase or decrease of the real-time load of the thermal power generating unit to adapt to various operating conditions of the unit, such as small frequency difference, slip, DEH load deviation, action time, etc.

[0105] It can be seen from the above technical scheme that this embodiment provides a primary frequency modulation control method, which is applied to electronic equipment and is used to control the real-time load of a thermal power generator set, specifically obtaining multiple first measurement and control parameters and multiple second measurement and control parameters of the thermal power generator set; processing the multiple first measurement and control parameters based on the slip-load curve to obtain a comprehensive instruction for the valve position of a steam turbine; processing the multiple second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount; and performing valve control on the steam turbine of the thermal power generator set based on the comprehensive instruction for the valve position of the steam turbine and the comprehensive feedforward amount of the small frequency difference. By superimposing the comprehensive feedforward amount of the small frequency difference on the comprehensive instruction for the valve position of the steam turbine to drive the various valve actions of the steam turbine, the real-time load of the thermal power generator set can be raised and lowered, thereby improving the regulation effect of the primary frequency modulation.

[0106] In addition, if Figure 2 As shown, a process is provided in which a plurality of first measurement and control parameters and a plurality of second measurement and control parameters are processed to obtain a small frequency difference integrated feedforward amount and a integrated instruction of a turbine valve position.

[0107] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0108] Although operations are depicted in a particular order, this should not be understood as requiring that the operations be performed in the particular order shown or in a sequential order.Multitasking and parallel processing may be advantageous under certain circumstances.

[0109] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0110] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as C or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer.

[0111] Figure 3 This is a block diagram of a primary frequency modulation control device according to an embodiment of the present application.

[0112] like Figure 3As shown, the primary frequency regulation control device provided in this embodiment is applied to electronic equipment of a thermal power plant, and is used to control the actual load of a thermal power generating set, so as to realize the accurate implementation of primary frequency regulation. The electronic equipment can be understood as a computer, server, cloud platform or distributed control system DCS of the thermal power generating set with data computing capability and information processing capability. The primary frequency regulation control device includes a parameter acquisition module 10, a first computing module 20, a second computing module 30, and a control execution module 40.

[0113] The parameter acquisition module is used to acquire a plurality of first measurement and control parameters and a plurality of second measurement and control parameters of the thermal power generating set.

[0114] The measurement and control parameters here include real-time parameters or historical parameters obtained by detecting or monitoring the thermal power generating set, and also include control instructions or control parameters issued by the host computer or other control systems. Specifically, the multiple first measurement and control parameters include but are not limited to rated load, fast-motion slow-return speed, rated speed, load instruction and actual load; the multiple second measurement and control parameters include but are not limited to small frequency difference value, main steam pressure, speed inequality, frequency modulation action time, rated speed and frequency modulation small frequency difference calculated load.

[0115] The first calculation module is used to process a plurality of first measurement and control parameters to obtain a comprehensive instruction on the valve position of the steam turbine.

[0116] The steam turbine valve position comprehensive instruction includes multiple instructions for controlling multiple valves on the steam turbine. In the present application, the corresponding first measurement and control parameter is processed based on the slip-load curve to obtain the comprehensive instruction. Specifically, the present application obtains the steam turbine valve position comprehensive instruction through the following steps.

[0117] First, based on the slip-load curve F(X)1, the speed difference between the fast-acting slow-return speed and the rated speed is processed to obtain the frequency-modulated load action amount. The data of the slip-load curve is shown in the following table:

[0118] Slip (r) -150 -10.1 -4 -3.3 -2.2 -2.18 load -148 -7.8 -2.1 -1.8 -0.23 0 Slip (r) 2.18 2.2 3.3 4 10.1 150 load 0 0.26 2 2.2 7.8 148

[0119] Then, the frequency modulation load action amount, load instruction and actual load are normalized based on the rated load. That is, the frequency modulation load action amount, load instruction and actual load are processed using the rated load as the dividend to obtain a value between 0 and 1. The rated load of this embodiment includes but is not limited to 660Mw.

[0120] Then, the difference between the normalized load instruction and the actual load is calculated to obtain the load deviation.

[0121] Then, the normalized frequency-modulated load action amount and the above-mentioned load deviation are superimposed and PID processed to obtain the valve position action instruction; the so-called PID processing means taking the frequency-modulated load action amount and the load deviation as the input of the PID controller, and then automatically adjusting them during the processing, and using the output of the PID controller as the valve position action instruction.

[0122] Then, the load instruction is processed based on the load-throttle coefficient to obtain the throttle instruction.

[0123] Finally, the valve position action command and the regulating command are superimposed to obtain the comprehensive turbine valve position command.

[0124] The second calculation module is used to process multiple second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount.

[0125] That is, the corresponding measurement and control parameters are processed based on multiple feedforward functions to obtain the small frequency difference comprehensive feedforward. The feedforward functions here are load deviation feedforward function F(X)2, frequency difference feedforward function F(X)3, main steam pressure feedforward function F(X)4, frequency modulation action time feedforward function F(X)7, slip feedforward function F(X)5 and small frequency difference-load feedforward function F(X)6. The specific processing process is as follows:

[0126] First, the load deviation is processed based on the load deviation feedforward function to obtain the first parameter. The data of the load deviation feedforward function is shown in the following table.

[0127] Load deviation "mark 1" -0.015 -0.009 -0.0068 -0.003 -0.0015 Feed forward coefficient 1.22 1.18 1.15 1.12 1.1 Load deviation "mark 1" 0.0015 0.0015 0.0068 0.009 0.015 Feed forward coefficient -1.1 -1.12 1.15 1.18 1.22

[0128] Then, the small frequency difference value is processed based on the frequency difference feedforward function to obtain the second parameter; the data of the frequency difference feedforward function is shown in the following table.

[0129] Small frequency difference (HZ) -0.3 0.04 0.022 0.01 0.003 Feed forward coefficient 1 1.1 1.15 1.2 1.3 Small frequency difference (HZ) 0.003 0.01 0.022 0.04 -0.3 Feed forward coefficient 1.3 1.2 1.15 1.1 1

[0130] Then, the main steam pressure is processed based on the main steam pressure feedforward function to obtain the third parameter; the data of the main steam pressure feedforward function is shown in the following table:

[0131] Main steam pressure (bar) 0 130 180 230 300 250 260 Feedforward coefficient output 30 40 32 25 22 20 20

[0132] Then, the product of the first parameter and the second parameter is multiplied by the third parameter to obtain the fourth parameter.

[0133] Then, the frequency modulation action time is processed based on the frequency modulation action time feedforward function to obtain the fifth parameter; the data of the frequency modulation action time feedforward function is shown in the following table:

[0134] Frequency modulation action time (s) 0 5 15 45 60 Feedforward coefficient output 1.1 1.11 1.17 1.15 1.1

[0135] Then, the speed deviation is obtained by multiplying the frequency-modulated load action amount and the speed inequality rate.

[0136] Then, the speed deviation is divided by the rated speed to obtain the sixth parameter.

[0137] Then, the sixth parameter is calculated based on the slip feedforward function to obtain the seventh parameter; the data of the slip feedforward function are shown in the following table:

[0138] Slip(RPM) -20 -6 -3 -2.2 -2 Feed forward coefficient 1 1 1.2 1.1 1 Slip(RPM) 2 2.15 3 6 20 Feed forward coefficient 1 1.1 1.2 1 1

[0139] Then, the load calculated by the small frequency difference of frequency modulation is processed based on the small frequency difference-load feedforward function, and the processing result is proportionally calculated to obtain the eighth parameter; the data of the small frequency difference-load feedforward function is shown in the following table:

[0140] Small frequency difference calculation load (Mw) -11.73 -6.45 -2.93 -0.8 -0.3 Feed forward coefficient 1 1.1 1.11 1.13 1.15 Small frequency difference calculation load (Mw) 0.3 0.8 2.9 6.45 11.73 Feed forward coefficient 1.15 1.13 1.11 1.1 1

[0141] Then, the seventh parameter is added to the eighth parameter to obtain the ninth parameter;

[0142] Then, the fifth parameter is multiplied by the ninth parameter to obtain the tenth parameter;

[0143] Finally, the fourth parameter is multiplied by the tenth parameter to obtain the small frequency difference comprehensive feedforward amount.

[0144] The control execution module is used to implement control based on the comprehensive command of the turbine valve position and the comprehensive feedforward quantity with small frequency difference.

[0145] The small frequency difference comprehensive feedforward quantity is added to the comprehensive command of the turbine valve position to drive the action of each turbine regulating valve, so as to control the increase or decrease of the real-time load of the thermal power generating unit to adapt to various operating conditions of the unit, such as small frequency difference, slip, DEH load deviation, action time, etc.

[0146] It can be seen from the above technical scheme that this embodiment provides a primary frequency regulation control device, which is applied to electronic equipment and is used to control the real-time load of a thermal power generator set, specifically to obtain multiple first measurement and control parameters and multiple second measurement and control parameters of the thermal power generator set; process the multiple first measurement and control parameters based on the slip-load curve to obtain a comprehensive instruction for the valve position of a steam turbine; process the multiple second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount; and perform valve control on the steam turbine of the thermal power generator set based on the comprehensive instruction for the valve position of the steam turbine and the comprehensive feedforward amount of the small frequency difference. By superimposing the comprehensive feedforward amount of the small frequency difference on the comprehensive instruction for the valve position of the steam turbine to drive the various valve actions of the steam turbine, the real-time load of the thermal power generator set can be raised and lowered, thereby improving the regulation effect of the primary frequency regulation.

[0147] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware. The name of a unit does not limit the unit itself in some cases. For example, the first acquisition unit may also be described as a "unit for acquiring at least two Internet Protocol addresses".

[0148] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0149] Figure 4 A block diagram of an electronic device according to an embodiment of the present application.

[0150] Reference below Figure 4 , which shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiments of the present disclosure. The terminal device in the embodiments of the present disclosure may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. The electronic device is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0151] The electronic device may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory ROM 402 or a program loaded from an input device 406 into a random access memory RAM 403. In the RAM, various programs and data required for the operation of the electronic device are also stored. The processing device, ROM, and RAM are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0152] Typically, the following devices may be connected to the I / O interface: input devices including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; output devices 407 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 408 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 409. The communication device 409 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows an electronic device with various devices, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices may be implemented or have alternatively.

[0153] The present application also provides a computer-readable storage medium embodiment.

[0154] The computer-readable storage medium is applied to an electronic device and carries one or more computer programs. When the one or more computer programs are executed by the electronic device, the electronic device obtains multiple first measurement and control parameters and multiple second measurement and control parameters of the thermal power generator set; processes the multiple first measurement and control parameters based on the slip-load curve to obtain a comprehensive instruction for the valve position of the steam turbine; processes the multiple second measurement and control parameters to obtain a small frequency difference comprehensive feedforward; and performs valve control on the steam turbine of the thermal power generator set based on the comprehensive instruction for the valve position of the steam turbine and the comprehensive feedforward for the small frequency difference. By superimposing the comprehensive feedforward for the small frequency difference on the comprehensive instruction for the valve position of the steam turbine to drive the various valve actions of the steam turbine, the real-time load of the thermal power generator set can be raised and lowered, thereby improving the regulation effect of the primary frequency regulation.

[0155] It should be noted that the computer-readable medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0156] In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, apparatus, or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0157] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0158] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0159] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0160] The technical solution provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A primary frequency modulation control method, applied to electronic equipment, for controlling the real-time load of a thermal power generating unit, characterized in that: The primary frequency modulation control method comprises the steps of: Acquire a plurality of first measurement and control parameters and a plurality of second measurement and control parameters of the thermal power generating set; Processing the plurality of first measurement and control parameters based on the slip-load curve to obtain a comprehensive turbine valve position instruction; Processing the plurality of second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount; Based on the turbine valve position comprehensive instruction and the small frequency difference comprehensive feedforward amount, the steam turbine of the thermal power generating set is subjected to valve modulation control.

2. The primary frequency modulation control method according to claim 1, characterized in that: The plurality of first measurement and control parameters include rated load, fast-motion and slow-return speed, rated speed, load command and actual load.

3. The primary frequency modulation control method according to claim 2, characterized in that: The method of processing the plurality of first measurement and control parameters based on the slip-load curve to obtain a comprehensive instruction of the steam turbine valve position comprises the following steps: Based on the slip-load curve, the speed difference between the fast-acting slow-returning speed and the rated speed is processed to obtain the frequency-modulated load action amount; Normalizing the frequency modulation load action amount, the load instruction and the actual load based on the rated load; Calculate the difference between the normalized load instruction and the actual load to obtain the load deviation; The normalized frequency modulation load action amount and the load deviation are superimposed and then subjected to PID processing to obtain a valve position action instruction; Processing the load instruction based on the load-valve tuning coefficient to obtain a valve tuning instruction; The valve position action instruction and the valve regulating instruction are superimposed to obtain the turbine valve position comprehensive instruction.

4. The primary frequency modulation control method according to claim 3, characterized in that: The multiple second measurement and control parameters include small frequency difference value, main steam pressure, speed inequality rate, frequency modulation action time, rated speed and frequency modulation small frequency difference calculated load.

5. The primary frequency modulation control method according to claim 4, characterized in that: The processing of the plurality of second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount comprises the steps of: Processing the load deviation based on a load deviation feedforward function to obtain a first parameter; Processing the small frequency difference value based on the frequency difference feedforward function to obtain a second parameter; Processing the main steam pressure based on a main steam pressure feedforward function to obtain a third parameter; Performing a product operation on the product of the first parameter and the second parameter and the third parameter to obtain a fourth parameter; Processing the frequency modulation action time based on the frequency modulation action time feedforward function to obtain a fifth parameter; The frequency modulation load action amount is multiplied by the speed inequality rate to obtain the speed deviation; Dividing the speed deviation by the rated speed to obtain a sixth parameter; Calculating the sixth parameter based on the slip feedforward function to obtain a seventh parameter; The frequency modulation small frequency difference calculation load is processed based on the small frequency difference-load feedforward function, and the processing result is proportionally calculated to obtain an eighth parameter; Adding the seventh parameter to the eighth parameter to obtain a ninth parameter; Performing a product operation on the fifth parameter and the ninth parameter to obtain a tenth parameter; The fourth parameter is multiplied by the tenth parameter to obtain the small frequency difference comprehensive feedforward amount.

6. A primary frequency modulation control device, applied to electronic equipment, used to control the real-time load of a thermal power generating unit, characterized in that: The primary frequency modulation control device comprises: A parameter acquisition module is configured to acquire a plurality of first measurement and control parameters and a plurality of second measurement and control parameters of the thermal power generating set; A first calculation module is configured to process the plurality of first measurement and control parameters based on a slip-load curve to obtain a comprehensive instruction for a steam turbine valve position; A second calculation module is configured to process the plurality of second measurement and control parameters to obtain a small frequency difference comprehensive feedforward amount; The control execution module is configured to perform valve regulation control on the steam turbine of the thermal power generating set based on the steam turbine valve position comprehensive instruction and the small frequency difference comprehensive feedforward amount.

7. The primary frequency modulation control device according to claim 6, characterized in that: The plurality of first measurement and control parameters include rated load, fast-motion slow-return speed, rated speed, load instruction and actual load, and the first calculation module is configured as follows: The speed difference between the fast-moving slow-returning speed and the rated speed is processed based on the slip-load curve to obtain the frequency-modulated load action amount; Normalizing the frequency modulation load action amount, the load instruction and the actual load based on the rated load; Calculate the difference between the normalized load instruction and the actual load to obtain the load deviation; The normalized frequency modulation load action amount and the load deviation are superimposed and then subjected to PID processing to obtain a valve position action instruction; Processing the load instruction based on the load-valve tuning coefficient to obtain a valve tuning instruction; The valve position action instruction and the valve regulating instruction are superimposed to obtain the turbine valve position comprehensive instruction.

8. The primary frequency modulation control device according to claim 7, characterized in that: The plurality of second measurement and control parameters include small frequency difference value, main steam pressure, speed inequality, frequency modulation action time, rated speed and frequency modulation small frequency difference calculation load, and the second calculation module is configured as follows: Processing the load deviation based on a load deviation feedforward function to obtain a first parameter; Processing the small frequency difference value based on the frequency difference feedforward function to obtain a second parameter; Processing the main steam pressure based on a main steam pressure feedforward function to obtain a third parameter; Performing a product operation on the product of the first parameter and the second parameter and the third parameter to obtain a fourth parameter; Processing the frequency modulation action time based on the frequency modulation action time feedforward function to obtain a fifth parameter; The frequency modulation load action amount is multiplied by the speed inequality rate to obtain the speed deviation; Dividing the speed deviation by the rated speed to obtain a sixth parameter; Calculating the sixth parameter based on the slip feedforward function to obtain a seventh parameter; The frequency modulation small frequency difference calculation load is processed based on the small frequency difference-load feedforward function, and the processing result is proportionally calculated to obtain an eighth parameter; Adding the seventh parameter to the eighth parameter to obtain a ninth parameter; Performing a product operation on the fifth parameter and the ninth parameter to obtain a tenth parameter; The fourth parameter is multiplied by the tenth parameter to obtain the small frequency difference comprehensive feedforward amount.

9. An electronic device, applied to a thermal power generating unit, characterized in that: The electronic device comprises at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs or instructions; The processor is used to execute the computer program or instruction so that the electronic device implements the primary frequency modulation control method according to any one of claims 1 to 5.

10. A storage medium, applied to an electronic device, characterized in that: The storage medium carries one or more computer programs, and the one or more computer programs can be executed by the electronic device, so that the electronic device implements the primary frequency modulation control method according to any one of claims 1 to 5.

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