CN115826396A - Power plant furnace cooperative frequency modulation control method, device, equipment and medium - Google Patents
Power plant furnace cooperative frequency modulation control method, device, equipment and medium Download PDFInfo
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Abstract
The utility model provides a power plant machine furnace cooperative frequency modulation control method, device, equipment and medium, which are used for solving the problems that the safe and stable operation of a machine set is not facilitated and extra working pressure is brought to operating personnel in the related technology, and the method comprises the following steps: acquiring a motor load and a main steam pressure in real time, and determining a load difference value between the motor load and a target load based on the motor load; adjusting the change rate of the motor load according to the motor load and the load difference; and adjusting the fuel supply quantity of the motor based on the main steam pressure and the motor load.
Description
Technical Field
The disclosure relates to the technical field of energy control, in particular to a power plant boiler cooperative frequency modulation control method, device, equipment and medium.
Background
The boiler-turbine coordinated control system controls the whole unit as a whole, so that the boiler and the steam turbine respond to the control requirement at the same time, and the unit is ensured to quickly and stably meet the load change and keep stable operation. If the design of the coordination control system is incomplete or the setting of control parameters is not reasonable, the main process parameters in the operation process of the unit fluctuate greatly, the method is particularly remarkable under the condition of variable load, the safe and stable operation of the unit is not facilitated, and meanwhile, extra working pressure is brought to operators.
Disclosure of Invention
The invention provides a power plant unit furnace cooperative frequency modulation control method, a device, equipment and a medium, which are used for solving the problems that the safe and stable operation of a unit is not facilitated and extra working pressure is brought to operating personnel in the related technology.
In a first aspect, an embodiment of the present invention provides a power plant boiler coordinated frequency modulation control method, including:
acquiring a motor load and a main steam pressure in real time, and determining a load difference value between the motor load and a target load based on the motor load;
adjusting the change rate of the motor load according to the difference value of the motor load and the load;
and adjusting the fuel supply amount of the motor based on the main steam pressure and the motor load.
In one possible implementation manner, an embodiment of the present invention provides a method for adjusting a change rate of a motor load according to a difference between the motor load and a load, including:
when the load difference value is larger than the preset load value, increasing the change rate of the opening of the steam turbine valve through the first accelerator;
and when the load difference value is not greater than the preset load value, reducing the change rate of the opening degree of the steam turbine valve through the first speed reducer.
In a possible implementation manner, in the method provided in an embodiment of the present invention, the method further includes:
and correcting the change rate of the opening of the steam turbine valve based on the motor load and the historical data of the motor load.
In one possible implementation, an embodiment of the present invention provides a method for adjusting a fuel supply amount of a motor based on a main steam pressure and a motor load, including:
determining main steam pressure compensation quantity according to the load difference and the main steam pressure;
the fuel supply amount of the motor is adjusted based on the main steam pressure compensation amount.
In a possible implementation manner, in the method provided in an embodiment of the present invention, the method further includes:
when the main steam pressure compensation quantity is larger than a preset main steam pressure preset value, accelerating the fuel supply quantity regulation rate through a second accelerator;
and when the main steam pressure compensation amount is not greater than the preset main steam pressure preset value, slowing down the fuel supply amount adjusting speed through a second speed reducer.
In a possible implementation manner, in the method provided in an embodiment of the present invention, the method further includes:
and correcting the fuel supply amount based on the main steam pressure and the history data of the main steam pressure.
In a possible implementation manner, in the method provided in an embodiment of the present invention, the method further includes:
acquiring the heating value of the fuel in real time;
the fuel supply amount is corrected based on the heat generation amount.
In a second aspect, an embodiment of the present invention provides a power plant furnace cooperative frequency modulation control apparatus, including:
the acquisition unit is used for acquiring the motor load and the main steam pressure in real time and determining a load difference value between the motor load and a target load based on the motor load;
the first adjusting unit is used for adjusting the change rate of the motor load according to the difference value of the motor load and the load;
and the second adjusting unit is used for adjusting the fuel supply quantity of the motor based on the main steam pressure and the motor load.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the first adjusting unit is specifically configured to:
when the load difference value is larger than the preset load value, increasing the change rate of the opening of the steam turbine valve through the first accelerator;
and when the load difference value is not greater than the preset load value, reducing the change rate of the opening degree of the steam turbine valve through the first speed reducer.
In a possible implementation manner, in the apparatus provided by the embodiment of the present invention, the first adjusting unit is further configured to:
and correcting the change rate of the opening of the steam turbine valve based on the motor load and the historical data of the motor load.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the second adjusting unit is specifically configured to:
determining main steam pressure compensation quantity according to the load difference and the main steam pressure;
the fuel supply amount of the motor is adjusted based on the main steam pressure compensation amount.
In a possible implementation manner, in the apparatus provided by the embodiment of the present invention, the second adjusting unit is further configured to:
when the main steam pressure compensation quantity is larger than a preset main steam pressure preset value, accelerating the fuel supply quantity regulation rate through a second accelerator;
and when the main steam pressure compensation amount is not greater than the preset main steam pressure preset value, slowing down the fuel supply amount adjusting speed through a second speed reducer.
In a possible implementation manner, in the apparatus provided by the embodiment of the present invention, the second adjusting unit is further configured to:
and correcting the fuel supply amount based on the main steam pressure and the history data of the main steam pressure.
In a possible implementation manner, in the apparatus provided by the embodiment of the present invention, the second adjusting unit is further configured to:
acquiring the calorific value of the fuel in real time;
the fuel supply amount is corrected based on the heat generation amount.
In a third aspect, an embodiment of the present invention provides an electronic device, including: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the method provided by the first aspect of an embodiment of the present invention.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which computer program instructions are stored, which, when executed by a processor, implement the method provided by the first aspect of the embodiment of the present invention.
The power plant unit furnace cooperative frequency modulation control method provided by the embodiment of the invention comprises the following steps:
the method comprises the steps of acquiring motor load and main steam pressure in real time, determining a load difference value between the motor load and a target load based on the motor load, adjusting the change rate of the motor load according to the motor load and the load difference value, and finally adjusting the fuel supply quantity of a motor based on the main steam pressure and the motor load. Compared with the prior art, the problem that the operation of the unit is not facilitated, and extra working pressure is brought to operators is solved, and the main parameters such as main steam pressure and steam temperature are stable under the condition of frequent load change, so that the unit works stably, and the labor cost is saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings may be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic flow chart of a power plant furnace cooperative frequency modulation control method according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a control scheme of a power plant furnace cooperative frequency modulation control method according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a power plant furnace cooperative frequency modulation control apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device of a power plant furnace coordinated frequency modulation control method according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Some of the words that appear in the text are explained below:
1. the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
2. The term "AGC" in the embodiments of the present invention refers to Automatic Gain Control (AGC), which refers to increasing the input signal level and improving the ability of the repeater to Control the output signal level when the repeater operates at maximum Gain and outputs the maximum power.
3. The term "PID" in the embodiment of the present invention refers to a control system for controlling, in industrial process control, the proportion, integral and Derivative of an error generated by comparing information acquired from real-time data of a controlled object with a given value, which is referred to as a PID (Proportional Integral Derivative) control system for short. The PID control has the advantages of simple principle, strong robustness, wide practical range and the like, and is a control system with mature technology and most wide application.
4. In the present embodiment of the invention, the term "BTU, BTU is the british thermal unit, 1BTU is the energy required to heat 1 degree fahrenheit for 1 pound of water, and 1BTU is about 1055 joules. And the heat pump is put together every hour to explain how much british thermal unit heat can be pumped out by the air conditioner every hour by utilizing the heat pump principle.
The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that, with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.
The boiler-turbine coordinated control system controls the whole unit as a whole, so that the boiler and the steam turbine respond to the control requirement at the same time, and the unit is ensured to quickly and stably meet the load change and keep stable operation. The coordinated control system of the machine furnace is a control system positioned on the upper layer, the downstream of the coordinated control system is divided into a plurality of subsystems, and each subsystem works relatively independently, so that the running reliability of the machine set is further improved.
The coordination system receives a medium regulation instruction from a power grid, and guides the unit to participate in AGC frequency modulation of the power grid within a preset load range of the unit at a certain load change rate.
If the design of the coordination control system is incomplete or the setting of control parameters is not reasonable, the main process parameters in the operation process of the unit fluctuate greatly, the method is particularly remarkable under the condition of variable load, the safe and stable operation of the unit is not facilitated, the index requirements of a power grid are difficult to meet, and extra working pressure is brought to operators.
In one example, the load is reduced from 456MW to 306MW, the unit is in a constant pressure mode, the operator manually changes the main steam pressure setting according to the load change, and due to fluctuation of some main parameters during load reduction, the operator has to stabilize the unit by reducing the load change rate, wherein the load change rate is changed from 10MW/h → 6MW/h → 4MW/h → 6MW/h → 8MW/h → 10 MW/h; the maximum deviation of the main steam pressure reaches 2.5MPa; the maximum temperature of the main steam is 566.6 ℃ and the minimum temperature of 554.3 ℃ has deviation of 12.3 ℃; the reheater outlet temperature is 567 ℃ at the highest and 538.2 ℃ at the lowest, and the deviation is 28.8 ℃.
In the variable load stage, the load is changed from 302MW to 455MW, the unit adopts a constant pressure mode, an operator manually changes the main steam pressure setting according to the load change, and due to fluctuation of some main parameters in the load increasing process, the operator has to stabilize the unit by reducing the load change rate, wherein the load change rate is changed from 3MW/h → 7MW/h → 1MW/h → 4MW/h → 7MW/h → 10 MW/h; the maximum deviation of the main steam pressure is 3.49Mpa; the main steam temperature is 568.2 ℃ at the maximum and 554.6 ℃ at the minimum with the deviation of 13.6 ℃; the maximum outlet temperature of the reheater is 569.1 ℃ and the minimum 551 ℃, and the deviation is 18.1 ℃.
By combining the above phenomena and data analysis results, the following problems exist in the current coordination control system:
(1) The quality of each adjusting parameter of the large-amplitude variable load AGC of the unit is always in a power grid examination interval;
(2) The main steam pressure control quality is low, the fluctuation amplitude is large, and the influence on the variable load rate is large;
(3) The main steam temperature and the reheat steam temperature have large fluctuation, which not only affects the service life of the unit equipment, but also seriously affects the operation economy of the unit;
(4) The unit fails to put into a sliding pressure operation mode, and the timeliness and the economy are difficult to guarantee by manually changing the main steam pressure setting by operators.
The problems are caused, so that the existing coordination control system is difficult to ensure that main parameters such as main steam pressure, steam temperature and the like are stable under the condition of such frequent load changes, and therefore, the existing coordination optimization control logic needs to be optimized or a new coordination optimization scheme needs to be proposed.
As shown in fig. 1, a power plant furnace cooperative frequency modulation control method according to an embodiment of the present disclosure includes:
step S101, obtaining motor load and main steam pressure in real time, and determining a load difference value between the motor load and a target load based on the motor load.
During specific implementation, the motor load and the main steam pressure are monitored in real time through a sensor, and then the load difference value between the motor load and the target load is determined according to the obtained motor load.
And S102, adjusting the change rate of the motor load according to the difference value of the motor load and the load.
During specific implementation, the change rate of the motor load is adjusted according to the motor load and the load difference value, and when the load difference value is larger than a preset load value, the change rate of the opening degree of a steam turbine valve is increased through a first accelerator; and when the load difference value is not greater than the preset load value, reducing the change rate of the opening degree of the steam turbine valve through the first speed reducer.
And the change rate of the opening of the steam turbine valve can be corrected based on the motor load and the historical data of the motor load.
And step S103, adjusting the fuel supply quantity of the motor based on the main steam pressure and the motor load.
During specific implementation, the main steam pressure compensation amount is determined according to the load difference and the main steam pressure, and then the fuel supply amount of the motor is adjusted based on the main steam pressure compensation amount. When the main steam pressure compensation quantity is larger than a preset main steam pressure preset value, accelerating the fuel supply quantity regulation rate through a second accelerator; and when the main steam pressure compensation amount is not greater than the preset main steam pressure preset value, slowing down the fuel supply amount adjusting speed through a second speed reducer.
And the fuel supply amount may also be corrected based on the main steam pressure and the main steam pressure history data. And acquiring the calorific value of the fuel in real time, and correcting the fuel supply amount based on the calorific value.
Specifically, the method of the disclosed embodiment is shown in fig. 2:
(1) Adding a new control loop based on a traditional and mature coordinated optimization control scheme to form a special coordinated optimization control scheme;
(2) In a steam turbine main control loop, a dynamic autoregressive prediction technology is utilized, the change of a future load is predicted according to historical data of the current load, and the predicted value of the future load is introduced into the current load regulation control, so that the load of a unit can be ensured to move fast in the lifting process and keep up with the load, and the load cannot be overshot when the lifting is finished;
(3) In a steam turbine main control loop, an accelerator and a speed reducer are designed by utilizing an immune regulation control technology, and the opening of a steam turbine regulating valve is accelerated when the load deviation is large; when the load deviation is small, the regulation change of the opening degree of the steam turbine valve is slowed down; the load of the unit can better follow the given load of the random unit through the adjustment of the accelerator and the reducer;
(4) In a steam turbine main control loop, carrying out fuzzy adjustment operation according to the load deviation of a unit to obtain the compensation quantity of a main steam pressure set value and enhance the coordination control of a steam turbine and a boiler;
(5) In a main control loop of the boiler, predicting the future change of main steam pressure by utilizing a dynamic regression prediction technology according to the current historical data of the main steam pressure, introducing the future main steam pressure predicted value into the current main steam pressure regulation, realizing reasonable coal supply demand value output, and ensuring that the main steam pressure is not overshot when a unit lifts and lowers load;
(6) In a boiler main control loop, if a sliding pressure adjusting mode is adopted, in an original sliding pressure curve, according to the change of a pressure set value, a prediction technology is utilized to form a sliding pressure curve compensation quantity, and a main steam pressure set value is finally formed through fuzzy operation; if the operation mode is the constant pressure operation mode, the loop does not work;
(7) In a main control loop of the boiler, an accelerator and a reducer are designed for the feedforward of the main coal feeding amount by using an immune regulation control technology, when the deviation of the main steam pressure and a set value is large, the feedforward acceleration regulation of the coal feeding amount is carried out, when the deviation of the main steam pressure and the set value is small, the feedforward deceleration regulation of the coal feeding amount is carried out, and through the design of the accelerator and the reducer, the reasonable output of a coal feeder (a coal feeder) instruction is realized, and the rapidity of boiler regulation is enhanced;
(8) In a main control loop of the boiler, parameters of a PID regulator are resolved through dynamic particle swarm so as to realize self-adaptive regulation, control parameters can be timely adjusted according to the change of the thermal characteristics of the boiler, PID optimal control is realized, and the boiler regulation has certain self-adaptive capacity and intelligent level;
(9) In a boiler main control loop, proportional, integral and differential separation control of a PID regulator is realized, wherein integral variable input is corrected through unit load deviation, and PID proportional and differential regulation oscillation caused by input load deviation correction is avoided;
(10) In a fuel main control loop, the actual coal quantity is corrected by BTU, and the coal quality deviation is dynamically corrected;
(11) In the fuel main control, the BTU corrected coal quantity is dynamically predicted to realize the advanced adjustment of the coal supply quantity;
(12) In the middle of the fuel master control, the state observation network is designed, the steam-water characteristic of the boiler is fully considered, secondary calculation is carried out on the basis of the boiler master control output, the coal feeding quantity demand is more reasonable and more stable, and meanwhile, the adjustment is more flexible.
As shown in fig. 3, an embodiment of the present invention provides a power plant boiler coordinated frequency modulation control apparatus, including:
the acquiring unit 301 is configured to acquire a motor load and a main steam pressure in real time, and determine a load difference between the motor load and a target load based on the motor load;
a first adjusting unit 302, configured to adjust a motor load change rate according to the motor load and the load difference;
a second regulating unit 303 for regulating the fuel supply amount of the motor based on the main steam pressure and the motor load.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the first adjusting unit 302 is specifically configured to:
when the load difference value is larger than the preset load value, increasing the change rate of the opening of the steam turbine valve through the first accelerator;
and when the load difference value is not greater than the preset load value, reducing the change rate of the opening degree of the steam turbine valve through the first speed reducer.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the first adjusting unit 302 is further configured to:
and correcting the change rate of the opening of the steam turbine valve based on the motor load and the historical data of the motor load.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the second adjusting unit 303 is specifically configured to:
determining main steam pressure compensation quantity according to the load difference and the main steam pressure;
the fuel supply amount of the motor is adjusted based on the main steam pressure compensation amount.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the second adjusting unit 303 is further configured to:
when the main steam pressure compensation quantity is larger than a preset main steam pressure preset value, accelerating the fuel supply quantity regulation rate through a second accelerator;
and when the main steam pressure compensation amount is not greater than the preset main steam pressure preset value, slowing down the fuel supply amount adjusting speed through a second speed reducer.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the second adjusting unit 303 is further configured to:
and correcting the fuel supply quantity based on the main steam pressure and the main steam pressure historical data.
In a possible implementation manner, in the apparatus provided in the embodiment of the present invention, the second adjusting unit 303 is further configured to:
acquiring the calorific value of the fuel in real time;
the fuel supply amount is corrected based on the heat generation amount.
In addition, the power plant furnace cooperative frequency modulation control method and device described in the embodiment of the application in conjunction with fig. 1 to 3 can be realized by electronic equipment. Fig. 4 shows a hardware structure diagram of an electronic device provided in an embodiment of the present application.
Referring now specifically to fig. 4, a schematic diagram of an electronic device 400 suitable for use in implementing embodiments of the present disclosure is shown. The electronic device shown in fig. 4 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 4, the electronic device 400 may include a processing means (e.g., a central processing unit, a graphic processor, etc.) 401 that may perform various appropriate actions and processes according to a program stored in a ROM (i.e., a read only memory) 402 or a program loaded from a storage means 408 into a RAM (i.e., a random access memory) 403 to implement the voice control method of the embodiments as described in the present disclosure. In the RAM 403, various programs and data necessary for the operation of the electronic apparatus 400 are also stored. The processing device 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An input/output (I/O) interface 405 is also connected to bus 404.
Generally, the following devices may be connected to the I/O interface 405: input devices 406 including, for example, a touch screen, touch pad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; an output device 407 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage devices 408 including, for example, magnetic tape, hard disk, etc.; and a communication device 409. The communication means 409 may allow the electronic device 400 to communicate wirelessly or by wire with other devices to exchange data. While fig. 4 illustrates an electronic device 400 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a non-transitory computer readable medium, the computer program containing program code for performing the method illustrated by the flow chart, thereby implementing the voice control method as described above. In such an embodiment, the computer program may be downloaded and installed from a network via the communication device 409, or from the storage device 408, or from the ROM 402. The computer program performs the above-described functions defined in the methods of the embodiments of the present disclosure when executed by the processing device 401.
It should be noted that the computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
In some embodiments, the clients, servers may communicate using any currently known or future developed network Protocol, such as HTTP (HyperText Transfer Protocol), and may interconnect with any form or medium of digital data communication (e.g., a communications network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), the Internet (e.g., the Internet), and peer-to-peer networks (e.g., ad hoc peer-to-peer networks), as well as any currently known or future developed network.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to:
acquiring a motor load and a main steam pressure in real time, and determining a load difference value between the motor load and a target load based on the motor load;
adjusting the change rate of the motor load according to the difference value of the motor load and the load;
and adjusting the fuel supply amount of the motor based on the main steam pressure and the motor load.
Optionally, when the one or more programs are executed by the electronic device, the electronic device may further perform other steps described in the above embodiments.
Computer program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including but not limited to an object oriented programming language such as Java, smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of 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 the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of an element does not in some cases constitute a limitation on the element itself.
The functions described herein above 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 a chip (SOCs), complex Programmable Logic Devices (CPLDs), and the like.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, 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 compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The power plant machine furnace cooperative frequency modulation control method provided by the embodiment of the invention comprises the following steps:
the method comprises the steps of acquiring motor load and main steam pressure in real time, determining a load difference value between the motor load and a target load based on the motor load, adjusting the change rate of the motor load according to the motor load and the load difference value, and finally adjusting the fuel supply quantity of a motor based on the main steam pressure and the motor load. Compared with the prior art, the problem that the safety and the stability of the unit are not facilitated, and extra working pressure is brought to operators is solved, the stability of main parameters such as main steam pressure and steam temperature under the frequent load change condition is ensured, the unit works stably, and the labor cost is saved.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A power plant mechanical furnace cooperative frequency modulation control method is characterized by comprising the following steps:
acquiring a motor load and a main steam pressure in real time, and determining a load difference value between the motor load and a target load based on the motor load;
adjusting the change rate of the motor load according to the motor load and the load difference;
and adjusting the fuel supply quantity of the motor based on the main steam pressure and the motor load.
2. The method of claim 1, wherein said adjusting a rate of change of a motor load based on said motor load and said load difference comprises:
when the load difference value is larger than a preset load value, increasing the change rate of the opening of the steam turbine valve through a first accelerator;
and when the load difference value is not greater than the preset load value, reducing the change rate of the opening degree of the steam turbine valve through a first speed reducer.
3. The method of claim 2, further comprising:
and correcting the change rate of the opening of the steam turbine valve based on the motor load and the historical data of the motor load.
4. The method of claim 1, wherein said adjusting a fueling amount of a motor based on said main steam pressure and said motor load comprises:
determining main steam pressure compensation quantity according to the load difference and the main steam pressure;
adjusting the fuel supply amount of the motor based on the main steam pressure compensation amount.
5. The method of claim 4, further comprising:
when the main steam pressure compensation quantity is larger than the main steam pressure preset value, accelerating the fuel supply quantity regulation rate through a second accelerator;
and when the main steam pressure compensation amount is not larger than the main steam pressure preset value, slowing down the fuel supply amount adjusting speed through a second speed reducer.
6. The method according to claim 4 or 5, characterized in that the method further comprises:
and correcting the fuel supply quantity based on the main steam pressure and the main steam pressure historical data.
7. The method of claim 6, further comprising:
acquiring the heating value of the fuel in real time;
the fuel supply amount is corrected based on the heat generation amount.
8. The utility model provides a power plant machine stove is frequency modulation controlling means in coordination which characterized in that includes:
the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a motor load and a main steam pressure in real time and determining a load difference value between the motor load and a target load based on the motor load;
the first adjusting unit is used for adjusting the change rate of the motor load according to the motor load and the load difference;
and the second adjusting unit is used for adjusting the fuel supply quantity of the motor based on the main steam pressure and the motor load.
9. An electronic device, comprising:
a processor;
a memory for storing the processor-executable instructions;
the processor is configured to execute the instructions to implement the power plant furnace coordinated frequency modulation control method according to any one of claims 1 to 7.
10. A computer storage medium having instructions that, when executed by a processor of an electronic device, enable the electronic device to perform the power plant furnace coordinated frequency modulation control method according to any one of claims 1 to 7.
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| CN202211457334.2A CN115826396A (en) | 2022-11-21 | 2022-11-21 | Power plant furnace cooperative frequency modulation control method, device, equipment and medium |
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| CN202211457334.2A CN115826396A (en) | 2022-11-21 | 2022-11-21 | Power plant furnace cooperative frequency modulation control method, device, equipment and medium |
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