Process given processing method and system for main steam pressure control system of thermal power unit

Abstract

The application provides a process given signal processing method and system of a main steam pressure control system of a thermal power unit, which comprises the following steps: obtaining a process given signal of the main steam pressure control system of the thermal power unit, and inputting the process given signal into a negative proportion operator to obtain a negative proportion operation signal; inputting the negative proportion operation signal into an eight-order inertia filter to obtain an eight-order inertia filter signal; inputting the eight-order inertia filter signal into a first-order inertia filter to obtain a first-order inertia filter signal; inputting the eight-order inertia filter signal into a minuend end of a subtractor and inputting the first-order inertia filter signal into a subtrahend end of the subtractor to obtain a subtraction signal; and inputting the subtraction signal and the process given signal into an adder to obtain a process given processing signal of the main steam pressure control system of the thermal power unit. The stability and reliability of the main steam pressure control system of the thermal power unit can be improved.

Description

Technical Field

[0001] This invention relates to the field of industrial process control, and in particular to a process setpoint processing method and system for a main steam pressure control system of a thermal power unit. Background Technology

[0002] In industrial process control practice, engineering researchers have invented an engineering fastest controller (EFC), which significantly improves the performance of feedback control. The EFC category includes: Engineering Fastest Proportional-Integral (EFPI) controllers, Accelerated Engineering Fastest Proportional-Integral (AEFPI) controllers, and Engineering Fastest Leading Observer (EFLO).

[0003] Currently, EFC technology has been widely used in the main steam pressure control system of thermal power units. However, in actual steam pressure control, the process overshoot of AEFPI control is relatively large in first-order or low-order processes, and steam pressure control cannot tolerate large process overshoots. Therefore, a first-order inertial filter is usually connected at the process setpoint to suppress overshoot. However, this simple approach reduces the efficiency of steam pressure feedback control, resulting in inefficient steam pressure control. Summary of the Invention

[0004] This invention provides a process input processing method and system for the main steam pressure control system of a thermal power unit. By processing the process input signal of the main steam pressure control system of a thermal power unit, it solves the technical problem of how to improve the efficiency of steam pressure feedback control.

[0005] To address the aforementioned technical problems, embodiments of the present invention provide a process input processing method for the main steam pressure control system of a thermal power unit, comprising:

[0006] The process given signal of the main steam pressure control system of the thermal power unit is obtained, and the process given signal is input into the negative proportional arithmetic unit to obtain the negative proportional arithmetic signal.

[0007] The negative proportional operation signal is input to an eighth-order inertial filter to obtain an eighth-order inertial filter signal;

[0008] The eighth-order inertial filter signal is input into a first-order inertial filter to obtain a first-order inertial filter signal.

[0009] The eighth-order inertial filter signal is input to the minuend of the subtractor, and the first-order inertial filter signal is input to the subtraction end of the subtractor to obtain the subtraction signal;

[0010] The subtraction signal and the process setpoint signal are input to the adder to obtain the process setpoint processing signal of the main steam pressure control system of the thermal power unit.

[0011] As a preferred embodiment, the negative proportionality arithmetic unit includes:

[0012] f PO (s)=-K PO ;

[0013] Among them, f PO (s) is the Laplace transfer function of the negative proportional amplifier, -K PO The proportional gain of the negative proportional operator.

[0014] As a preferred embodiment, the eighth-order inertial filter includes:

[0015]

[0016] Where s is the Laplace operator, f EOIF (s) is the Laplace transfer function of the eighth-order inertial filter, T EOIF is the time constant of the eighth-order inertial filter.

[0017] As a preferred embodiment, the first-order inertial filter includes:

[0018]

[0019] Where s is the Laplace operator, f FOIF (s) is the Laplace transfer function of the first-order inertial filter, T FOIF is the time constant of the first-order inertial filter.

[0020] As a preferred embodiment, the process input signal of the main steam pressure control system of the thermal power unit is obtained according to the following formula:

[0021]

[0022] Where s is the Laplace operator, f EFCSPG (s) is the Laplace transfer function given for the engineering fastest control system process, f FOIF (s) is the Laplace transfer function of the first-order inertial filter, f EOIF (s) is the Laplace transfer function of the eighth-order inertial filter, f PO(s) is the Laplace transfer function of the negative proportional amplifier; -K PO The proportional gain of the negative proportional operator.

[0023] Accordingly, embodiments of the present invention also provide a process setpoint processing system for the main steam pressure control system of a thermal power unit, including a negative proportional arithmetic unit, an eighth-order inertial filter, a subtractor, a first-order inertial filter, and an adder; wherein,

[0024] The negative proportional amplifier is used to acquire the process input signal of the main steam pressure control system of the thermal power unit, and based on the process input signal, to obtain the negative proportional amplifier signal; and input the negative proportional amplifier signal to the eighth-order inertial filter.

[0025] The eighth-order inertial filter is used to obtain an eighth-order inertial filter signal based on the negative proportional operation signal; and the eighth-order inertial filter signal is input to the first-order inertial filter and the minuend of the subtractor;

[0026] The first-order inertial filter is used to obtain a first-order inertial filter signal based on the eighth-order inertial filter signal; and the first-order inertial filter signal is input to the subtraction terminal of the subtractor.

[0027] The subtractor is used to obtain a subtraction signal based on the eighth-order inertial filter signal and the first-order inertial filter signal; and inputs the subtraction signal to the adder.

[0028] The adder is used to acquire the process input signal of the main steam pressure control system of the thermal power unit, and based on the process input signal and the subtraction signal, to obtain the process input processing signal of the main steam pressure control system of the thermal power unit.

[0029] As a preferred embodiment, the input terminal of the process given signal is connected to the input terminals of the negative proportional operator and the adder; the output terminal of the negative proportional operator is connected to the input terminal of the eighth-order inertial filter; the output terminal of the eighth-order inertial filter is connected to the minuend terminal of the subtractor and the input terminal of the first-order inertial filter; the output terminal of the first-order inertial filter is connected to the subtrahend terminal of the subtractor; the output terminal of the subtractor is connected to the input terminal of the adder; and the output terminal of the adder is connected to the output terminal of the process given signal.

[0030] As a preferred embodiment, the process input signal of the main steam pressure control system of the thermal power unit is obtained according to the following formula:

[0031]

[0032] Where s is the Laplace operator, f EFCSPG(s) is the Laplace transfer function given for the engineering fastest control system process, f FOIF (s) is the Laplace transfer function of the first-order inertial filter, f EOIF (s) is the Laplace transfer function of the eighth-order inertial filter, f PO (s) is the Laplace transfer function of the negative proportional amplifier; -K PO The proportional gain of the negative proportional operator.

[0033] Accordingly, embodiments of the present invention also provide a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the process given processing method of the main steam pressure control system of the thermal power unit.

[0034] Accordingly, embodiments of the present invention also provide a computer-readable storage medium, the computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to execute the process given processing method of the main steam pressure control system of the thermal power unit.

[0035] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0036] This invention provides a process setpoint processing method and system for a main steam pressure control system of a thermal power unit. The process setpoint processing method includes: acquiring the process setpoint signal of the main steam pressure control system of the thermal power unit; inputting the process setpoint signal into a negative proportional arithmetic unit to obtain a negative proportional arithmetic signal; inputting the negative proportional arithmetic signal into an eighth-order inertial filter to obtain an eighth-order inertial filter signal; inputting the eighth-order inertial filter signal into a first-order inertial filter to obtain a first-order inertial filter signal; inputting the eighth-order inertial filter signal into the minuend of a subtractor and the first-order inertial filter signal into the subtrahend of the subtractor to obtain a subtraction signal; and inputting the subtraction signal and the process setpoint signal into an adder to obtain the process setpoint processing signal of the main steam pressure control system of the thermal power unit. By implementing this invention, the overshoot of the main steam pressure control system of thermal power units can be reduced by introducing a negative proportional arithmetic unit and an eighth-order inertial filter for signal processing, thereby improving the stability and reliability of the main steam pressure control system of thermal power units. At the same time, the above-mentioned adder and subtractor can further correct the process given signal, improve the accuracy of signal processing, and thus improve the efficiency of steam pressure feedback control. Attached Figure Description

[0037] Figure 1: A schematic flowchart of an embodiment of the process given processing method for the main steam pressure control system of a thermal power unit provided by the present invention.

[0038] Figure 2 : A schematic diagram of an embodiment of the main steam pressure control system for thermal power units provided by the present invention.

[0039] Figure 3 : A schematic diagram of the principle of an embodiment of the process given processing system of the main steam pressure control system for thermal power units provided by the present invention.

[0040] Figure 4 This is a schematic diagram of simulation results for an embodiment of the present invention before the adoption of the given method for the engineering fastest control system process.

[0041] Figure 5 This is a schematic diagram of the simulation results of an embodiment of the present invention that uses the process given method of the fastest control system for engineering. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0043] It should be understood that the step numbers used in the text are for ease of description only and are not intended to limit the order in which the steps are performed.

[0044] It should be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0045] The terms “comprising” and “including” indicate the presence of the described feature, whole, step, operation, element and / or component, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0046] The term “and / or” refers to any combination of one or more of the associated listed items, as well as all possible combinations, and includes these combinations.

[0047] Any process or method description described herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0048] The logic and / or steps described herein, for example, can be considered as a ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0049] Please refer to Figure 1 and Figure 2 , Figure 1 A process input method for a main steam pressure control system of a thermal power unit, provided in an embodiment of the present invention, includes steps S1 to S5; wherein,

[0050] Step S1: Obtain the process given signal of the main steam pressure control system of the thermal power unit, and input the process given signal into the negative proportional arithmetic unit to obtain the negative proportional arithmetic signal.

[0051] Step S2: Input the negative proportional operation signal into the eighth-order inertial filter to obtain the eighth-order inertial filter signal.

[0052] Step S3: Input the eighth-order inertial filter signal into the first-order inertial filter to obtain the first-order inertial filter signal.

[0053] Step S4: Input the eighth-order inertial filter signal to the minuend of the subtractor, and input the first-order inertial filter signal to the subtraction end of the subtractor to obtain the subtraction signal.

[0054] Step S5: Input the subtraction signal and the process given signal into the adder to obtain the process given processing signal of the main steam pressure control system of the thermal power unit.

[0055] In this embodiment, as Figure 3As shown, the input terminal of the process given signal is connected to the input terminal of the negative proportional operator and the input terminal of the adder; the output terminal of the negative proportional operator is connected to the input terminal of the eighth-order inertial filter; the output terminal of the eighth-order inertial filter is connected to the minuend terminal of the subtractor and the input terminal of the first-order inertial filter; the output terminal of the first-order inertial filter is connected to the subtrahend terminal of the subtractor; the output terminal of the subtractor is connected to the input terminal of the adder; and the output terminal of the adder is connected to the output terminal of the process given signal.

[0056] In one implementation, Figure 2 A main steam pressure control system for thermal power units is provided, which adopts an engineering maximum speed control system. The process input signal can be a step signal.

[0057] Among them, EFCSPG implements the process input processing method for steps S1 to S5 above for the fastest engineering control system. AEFPI stands for Accelerated Engineering Fastest Proportional-Integral Controller. P represents process processing.

[0058] Specifically, the accelerated engineering maximum speed proportional-integral controller is as follows:

[0059] f AEFPI (s)=K AEFPI [1+f AEFI (s)];

[0060]

[0061]

[0062] T AEFI =T AEFTF ;

[0063] In the formula, f AEFPI (s) is the transfer function of AEFPI, K AEFPI For cascaded proportional control gain, f AEFI (s) is the transfer function of the Acceleration Engineering Fastest Integrator (AEFI), f AEFTF (s) is the transfer function of the Acceleration Engineering Fastest Tracking Filter (AEFTF); T AEFI T is the time constant of AEFI, in seconds;AEFTF T is the time constant of AEFTF, in seconds; quantitatively... AEFI =T AEFTF .

[0064] In one implementation, the process is as follows:

[0065]

[0066] In the formula, f P (s) is the transfer function of the process.

[0067] In a preferred embodiment, the negative proportionality calculator includes:

[0068] f PO (s)=-K PO ;

[0069] Among them, f PO (s) is the Laplace transfer function of the negative proportional operator, -K PO The proportional gain of the negative proportional operator.

[0070] In a preferred embodiment, the eighth-order inertial filter includes:

[0071]

[0072] Where s is the Laplace operator, f EOIF (s) is the Laplace transfer function of the eighth-order inertial filter, T EOIF is the time constant of the eighth-order inertial filter.

[0073] In a preferred embodiment, the first-order inertial filter includes:

[0074]

[0075] Where s is the Laplace operator, f FOIF (s) is the Laplace transfer function of the first-order inertial filter, T FOIF is the time constant of the first-order inertial filter.

[0076] In a preferred embodiment, the process input signal of the main steam pressure control system of the thermal power unit is obtained according to the following formula:

[0077]

[0078] Where s is the Laplace operator, f EFCSPG (s) is the Laplace transfer function given for the engineering fastest control system process, f FOIF(s) is the Laplace transfer function of the first-order inertial filter, f EOIF (s) is the Laplace transfer function of the eighth-order inertial filter, f PO (s) is the Laplace transfer function of the negative proportional amplifier; -K PO The proportional gain of the negative proportional operator.

[0079] When the open-loop system phase is -135°, the open-loop system gain is equal to 0.5. Searching for the optimal parameters of AEFPI, the AEFPI parameters are obtained as follows: T AEFI =413s, K AEFPI =2.187.

[0080] Before adopting the process input method for the fastest control system in engineering according to the present invention, when the process input was a unit step, the simulation results obtained were as follows: Figure 4 As shown, the process overshoot is 19%, and the settling time is 861 seconds. The settling time refers to the time it takes for the process to reach a deviation of less than 5%.

[0081] After setting the process feed method for the fastest control system of the present invention, and the parameter of the method is -K PO = -1.35, T EOIF =48s, T FOIF =48s, the simulation results obtained, Figure 5 As shown, the process overshoot is 0.9% and the settling time is 279s. This embodiment of the process setpoint method for an engineering maximum speed control system significantly reduces process overshoot and settling time.

[0082] As described above, the negative proportional arithmetic unit, the eighth-order inertial filter, and the first-order inertial filter are used in the engineering maximum speed control system of the main steam pressure control system of the thermal power unit to process the process given signal of the main steam pressure control system of the thermal power unit. This can reduce the maximum instantaneous deviation from the final steady-state value of the output variable, that is, to suppress the overshoot, so that the system has a better feedback control effect and further improves the regulation performance of the system.

[0083] As a preferred embodiment, such as Figure 3 As shown, Figure 3 A process input processing system for the main steam pressure control system of a thermal power unit is provided, including a negative proportional arithmetic unit, an eighth-order inertial filter, a subtractor, a first-order inertial filter, and an adder; wherein, the process input processing system for the main steam pressure control system of the thermal power unit can be integrated into a computer device, including but not limited to smartphones, laptops, tablets, desktop computers, physical servers, and cloud servers.

[0084] The negative proportional amplifier is used to acquire the process input signal of the main steam pressure control system of the thermal power unit, and based on the process input signal, to obtain the negative proportional amplifier signal; and input the negative proportional amplifier signal to the eighth-order inertial filter.

[0085] The eighth-order inertial filter is used to obtain an eighth-order inertial filter signal based on the negative proportional operation signal; and the eighth-order inertial filter signal is input to the first-order inertial filter and the minuend of the subtractor;

[0086] The first-order inertial filter is used to obtain a first-order inertial filter signal based on the eighth-order inertial filter signal; and the first-order inertial filter signal is input to the subtraction terminal of the subtractor.

[0087] The subtractor is used to obtain a subtraction signal based on the eighth-order inertial filter signal and the first-order inertial filter signal; and inputs the subtraction signal to the adder.

[0088] The adder is used to acquire the process input signal of the main steam pressure control system of the thermal power unit, and based on the process input signal and the subtraction signal, to obtain the process input processing signal of the main steam pressure control system of the thermal power unit.

[0089] In a preferred embodiment, the input terminal of the process given signal is connected to the input terminals of the negative proportional operator and the adder; the output terminal of the negative proportional operator is connected to the input terminal of the eighth-order inertial filter; the output terminal of the eighth-order inertial filter is connected to the minuend terminal of the subtractor and the input terminal of the first-order inertial filter; the output terminal of the first-order inertial filter is connected to the subtrahend terminal of the subtractor; the output terminal of the subtractor is connected to the input terminal of the adder; and the output terminal of the adder is connected to the output terminal of the process given signal.

[0090] As a preferred embodiment, the negative proportionality arithmetic unit includes:

[0091] f PO (s)=-K PO ;

[0092] Among them, f PO (s) is the Laplace transfer function of the negative proportional amplifier, -K PO The proportional gain of the negative proportional operator.

[0093] As a preferred embodiment, the eighth-order inertial filter includes:

[0094]

[0095] Where s is the Laplace operator, f EOIF(s) is the Laplace transfer function of the eighth-order inertial filter, T EOIF is the time constant of the eighth-order inertial filter.

[0096] As a preferred embodiment, the first-order inertial filter includes:

[0097]

[0098] Where s is the Laplace operator, f FOIF (s) is the Laplace transfer function of the first-order inertial filter, T FOIF is the time constant of the first-order inertial filter.

[0099] As a preferred embodiment, the process input signal of the main steam pressure control system of the thermal power unit is obtained according to the following formula:

[0100]

[0101] Where s is the Laplace operator, f EFCSPG (s) is the Laplace transfer function given for the engineering fastest control system process, f FOIF (s) is the Laplace transfer function of the first-order inertial filter, f EOIF (s) is the Laplace transfer function of the eighth-order inertial filter, f PO (s) is the Laplace transfer function of the negative proportional amplifier; -K PO The proportional gain of the negative proportional operator.

[0102] Accordingly, embodiments of the present invention also provide a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the process given processing method of the main steam pressure control system of the thermal power unit.

[0103] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the terminal, connecting various parts of the terminal via various interfaces and lines.

[0104] The memory can be used to store the computer program. The processor implements various functions of the terminal by running or executing the computer program stored in the memory and calling data stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, phonebook, etc.). In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0105] Accordingly, embodiments of the present invention also provide a computer-readable storage medium, the computer-readable storage medium including a stored computer program, wherein, when the computer program is executed, it controls the device where the computer-readable storage medium is located to execute the process given processing method of the main steam pressure control system of the thermal power unit.

[0106] The process input processing module of the main steam pressure control system of the thermal power unit, if implemented as a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above embodiments of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0107] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0108] This invention provides a process setpoint processing method and system for a main steam pressure control system of a thermal power unit. The process setpoint processing method includes: acquiring the process setpoint signal of the main steam pressure control system of the thermal power unit; inputting the process setpoint signal into a negative proportional arithmetic unit to obtain a negative proportional arithmetic signal; inputting the negative proportional arithmetic signal into an eighth-order inertial filter to obtain an eighth-order inertial filter signal; inputting the eighth-order inertial filter signal into a first-order inertial filter to obtain a first-order inertial filter signal; inputting the eighth-order inertial filter signal into the minuend of a subtractor and the first-order inertial filter signal into the subtrahend of the subtractor to obtain a subtraction signal; and inputting the subtraction signal and the process setpoint signal into an adder to obtain the process setpoint processing signal of the main steam pressure control system of the thermal power unit. By implementing this invention, the overshoot of the main steam pressure control system of thermal power units can be reduced by introducing a negative proportional arithmetic unit and an eighth-order inertial filter for signal processing, thereby improving the stability and reliability of the main steam pressure control system of thermal power units. At the same time, the above-mentioned adder and subtractor can further correct the process given signal, improve the accuracy of signal processing, and thus improve the efficiency of steam pressure feedback control.

[0109] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A process input processing method for the main steam pressure control system of a thermal power unit, characterized in that, include: The process given signal of the main steam pressure control system of the thermal power unit is obtained, and the process given signal is input into the negative proportional arithmetic unit to obtain the negative proportional arithmetic signal. The negative proportional operation signal is input to an eighth-order inertial filter to obtain an eighth-order inertial filter signal; The eighth-order inertial filter signal is input into a first-order inertial filter to obtain a first-order inertial filter signal. The eighth-order inertial filter signal is input to the minuend of the subtractor, and the first-order inertial filter signal is input to the subtraction end of the subtractor to obtain the subtraction signal; The subtraction signal and the process input signal are input to the adder to obtain the process input processing signal of the main steam pressure control system of the thermal power unit. The eighth-order inertial filter includes: ； Where s is the Laplace operator, f EOIF ( s Let be the Laplace transfer function of the eighth-order inertial filter. T EOIF The time constant of the eighth-order inertial filter; The first-order inertial filter includes: ； Where s is the Laplace operator, f FOIF ( s Let be the Laplace transfer function of the first-order inertial filter. T FOIF The time constant of the first-order inertial filter; The process input signal of the main steam pressure control system of the thermal power unit is obtained according to the following formula: ； Where s is the Laplace operator, f EFCSPG ( s ( ) is the Laplace transfer function given for the fastest control system process in engineering. f FOIF ( s Let be the Laplace transfer function of the first-order inertial filter. f EOIF ( s Let be the Laplace transfer function of the eighth-order inertial filter. f PO ( s ) is the Laplace transfer function of the negative proportional amplifier; K PO The proportional gain of the negative proportional operator.

2. The process input processing method for the main steam pressure control system of a thermal power unit as described in claim 1, characterized in that, The negative proportional calculator includes: ； in, f PO ( s ) is the Laplace transfer function of the negative proportional amplifier, - K PO The proportional gain of the negative proportional operator.

3. A process input processing system for the main steam pressure control system of a thermal power unit, characterized in that, The process input processing method of the main steam pressure control system of a thermal power unit as described in claim 1 or 2 is adopted. The process given by the system includes a negative proportional amplifier, an eighth-order inertial filter, a subtractor, a first-order inertial filter, and an adder; wherein, The negative proportional amplifier is used to acquire the process input signal of the main steam pressure control system of the thermal power unit, and based on the process input signal, to obtain the negative proportional amplifier signal; and input the negative proportional amplifier signal to the eighth-order inertial filter. The eighth-order inertial filter is used to obtain an eighth-order inertial filter signal based on the negative proportional operation signal; and the eighth-order inertial filter signal is input to the first-order inertial filter and the minuend of the subtractor; The first-order inertial filter is used to obtain a first-order inertial filter signal based on the eighth-order inertial filter signal; and the first-order inertial filter signal is input to the subtraction terminal of the subtractor. The subtractor is used to obtain a subtraction signal based on the eighth-order inertial filter signal and the first-order inertial filter signal; and inputs the subtraction signal to the adder. The adder is used to acquire the process input signal of the main steam pressure control system of the thermal power unit, and based on the process input signal and the subtraction signal, to obtain the process input processing signal of the main steam pressure control system of the thermal power unit.

4. The process input processing system for the main steam pressure control system of a thermal power unit as described in claim 3, characterized in that, The input terminal of the process given signal is connected to the input terminal of the negative proportional operator and the input terminal of the adder; the output terminal of the negative proportional operator is connected to the input terminal of the eighth-order inertial filter; the output terminal of the eighth-order inertial filter is connected to the minuend terminal of the subtractor and the input terminal of the first-order inertial filter; the output terminal of the first-order inertial filter is connected to the subtrahend terminal of the subtractor; the output terminal of the subtractor is connected to the input terminal of the adder; and the output terminal of the adder is connected to the output terminal of the process given signal.

5. The process input processing system for the main steam pressure control system of a thermal power unit as described in claim 3, characterized in that, The process input signal of the main steam pressure control system of the thermal power unit is obtained according to the following formula: ； Where s is the Laplace operator, f EFCSPG ( s ( ) is the Laplace transfer function given for the fastest control system process in engineering. f FOIF ( s Let be the Laplace transfer function of the first-order inertial filter. f EOIF ( s Let be the Laplace transfer function of the eighth-order inertial filter. f PO ( s ) is the Laplace transfer function of the negative proportional amplifier; K PO The proportional gain of the negative proportional operator.

6. A terminal device, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor, when executing the computer program, implements the process given processing method of the main steam pressure control system of a thermal power unit as described in claim 1 or 2.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed, it controls the device containing the computer-readable storage medium to perform the process given processing method of the main steam pressure control system of a thermal power unit as described in claim 1 or 2.

Images