Control method and device of coal-fired power generation unit, storage medium and electronic equipment
By obtaining the RB type and number of oil guns of the coal-fired generator set, determining the target control parameters and controlling the water supply system, the problem of low matching accuracy of boiler water supply and coal volume is solved, and the stable operation of the coal-fired generator set in the RB situation is achieved and rapid load drop.
Patent Information
- Application Number
- CN202411504272.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-02-14
AI Technical Summary
In the prior art, the accuracy of matching the feed water and coal in the theoretical feed water of the boiler is low, and it is prone to overtemperature or abnormal shutdown.
By obtaining the RB type and number of oil guns of coal-fired generator sets, the target control parameters, such as the water supply waiting time and water addition amount, and control the water supply system based on these parameters.
In the case of coal-fired generator set RB, by precisely controlling the water supply system, the unit load is rapidly reduced, the boiler steam temperature drop rate is controlled, abnormal shutdown is avoided, and the equipment is ensured to operate stably.
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Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of automatic control technology, and in particular to a control method, device, storage medium and electronic equipment for a coal-fired power generation unit. Background Art
[0002] Boilers are important energy sources in the power industry - power equipment for heat sources. With the increase in boiler capacity and the improvement of parameters, the control of boilers becomes more and more important. Boiler feed water control cannot be adjusted only based on water level signals.
[0003] Auxiliary machine fault load reduction (RUNBACK, RB) means that when the main auxiliary machine in the generator set trips due to a fault, causing the maximum output of the generator set to be lower than the given load, the unit coordination control system (CCS) will quickly reduce the unit load to the corresponding output that can be actually achieved, and control the unit to continue operating within the allowable parameter range.
[0004] However, in the current theoretical water supply of boilers, the matching accuracy of water supply and coal quantity is low, which is prone to overheating or abnormal shutdown. Summary of the invention
[0005] In order to overcome the problems existing in the related art, the present disclosure provides a control method, device, storage medium and electronic equipment for a coal-fired power generation unit.
[0006] According to a first aspect of an embodiment of the present disclosure, a control method for a coal-fired power generation unit is provided, comprising: Obtain the RB type and the number of oil guns of the coal-fired power generation unit, wherein the RB type includes a primary fan RB or an air preheater RB; Determining target control parameters of the coal-fired power generation unit according to the RB type and the number of the oil guns; According to the target control parameter, the water supply system of the coal-fired power generation unit is controlled.
[0007] In one embodiment, the target control parameters include the water supply waiting time and the water addition amount, and the target control parameters of the coal-fired power generation unit are determined according to the RB type and the number of oil guns, including: Determining the water supply waiting time according to the RB type; The amount of water added is determined according to the number of the oil guns and the preset water supply per unit oil gun.
[0008] In one embodiment, determining the water supply waiting time according to the RB type includes: In the case where the RB type is the primary fan RB, the preset first water supply inertia time is used as the water supply waiting time; or, When the RB type is the air preheater RB, the preset second water supply inertia time is used as the water supply waiting time.
[0009] In one embodiment, the method further comprises: Obtaining the current water supply flow of the water supply system; The controlling the water supply system of the coal-fired power generation unit according to the target control parameter comprises: The water supply system of the coal-fired power generation unit is controlled according to the current water supply flow rate, the water supply waiting time and the water addition amount.
[0010] According to a second aspect of an embodiment of the present disclosure, a control device for a coal-fired power generation unit is provided, comprising: An acquisition module, used to acquire the RB type and the number of oil guns of the coal-fired power generation unit, wherein the RB type includes a primary fan RB or an air preheater RB; A determination module, used to determine the target control parameters of the coal-fired power generation unit according to the RB type and the number of oil guns; A control module is used to control the water supply system of the coal-fired power generation unit according to the target control parameter.
[0011] In one embodiment, the target control parameters include water supply waiting time and water addition amount, and the determination module is further used to: Determining the water supply waiting time according to the RB type; The amount of water added is determined according to the number of the oil guns and the preset water supply per unit oil gun.
[0012] In one embodiment, the determining module is further used to: In the case where the RB type is the primary fan RB, the preset first water supply inertia time is used as the water supply waiting time; When the RB type is the air preheater RB, the preset second water supply inertia time is used as the water supply waiting time.
[0013] In one embodiment, the acquisition module is further used to: Obtaining the current water supply flow of the water supply system; The control module is also used for: The water supply system of the coal-fired power generation unit is controlled according to the current water supply flow rate, the water supply waiting time and the water addition amount.
[0014] According to a third aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the control method of the coal-fired power generation unit provided by the first aspect of the present disclosure are implemented.
[0015] According to a fourth aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a memory on which a computer program is stored; and a processor for executing the computer program in the memory to implement the steps of the control method of a coal-fired power generation unit provided in the first aspect of the present disclosure.
[0016] Through the above technical scheme, in the case of RB of the coal-fired power generating unit, the water supply system of the coal-fired power generating unit is timely controlled according to the RB type and the number of oil guns. While the unit load of the coal-fired power generating unit decreases rapidly with the operation of the water supply system, the extent of the decrease in the boiler steam temperature is controlled to avoid abnormal shutdown of the unit due to excessive drop in steam temperature, which is beneficial to the coordinated adjustment of wind, coal and water after RB is triggered, and maintains the stability of air temperature and boiler during RB.
[0017] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 The figure is a flow chart of a control method of a coal-fired power generation unit according to an exemplary embodiment.
[0019] Figure 2 The figure is a flow chart of a control method of a coal-fired power generation unit according to an exemplary embodiment.
[0020] Figure 3 It is a block diagram of a control device for a coal-fired power generation unit according to an exemplary embodiment.
[0021] Figure 4 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION
[0022] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0023] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.
[0024] The terms "first", "second", etc. in the specification and claims of the present disclosure and the above drawings are used to distinguish similar objects and do not have to be understood as a specific order or sequence. In addition, in the description with reference to the drawings, the same symbols in different drawings represent the same elements.
[0025] In the description of the present disclosure, unless otherwise specified, "multiple" means two or more than two, and other quantifiers are similar thereto; "at least one item", "one item or multiple items" or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one item a can represent any number of a; for another example, one item or multiple items among a, b and c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple; "and / or" is a kind of description of the association relationship of associated objects, indicating that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " indicates that the associated objects before and after are in an "or" relationship.
[0026] Although operations or steps are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood that it is required to perform these operations or steps in the specific order shown or in a serial order, or to perform all the operations or steps shown to obtain the desired results. In the embodiments of the present disclosure, these operations or steps can be performed in series; these operations or steps can also be performed in parallel; or some of these operations or steps can be performed.
[0027] First, the application scenarios of the present disclosure are described.
[0028] The existing coal-fired power generation unit includes boiler, steam turbine, generator, exhaust device and air cooling island, etc. Among them, the boiler is used to convert the chemical energy of the fuel into the thermal energy of steam and output it to the steam turbine, the steam turbine is used to convert the thermal energy of the steam into the mechanical energy of the rotation of the steam turbine rotor and output it to the generator, the generator is used to convert the mechanical energy of the rotation of the steam turbine rotor into electrical energy and output it, and the exhaust steam discharged by the steam turbine passes through the exhaust device and enters the air cooling island, where it is air-cooled to form condensed water and then sent to the heat recovery system of the steam turbine, thus forming a complete thermal cycle.
[0029] The number of supercritical or ultra-supercritical thermal power generating units is increasing day by day, and they are gradually becoming the main units in the domestic power grid. The coordinated control mode of the units is mostly based on the boiler follower coordinated control mode (CBF) or the turbine follower coordinated control mode (CTF). In the CBF mode, the boiler controls the steam pressure and the steam turbine controls the load; in the CTF mode, the boiler controls the load and the steam turbine controls the steam pressure.
[0030] As the power grid dispatching has increasingly higher requirements for the automatic gain control (AGC) of thermal power units, the units mainly adopt a control method based on CBF to speed up load response and improve load control accuracy. However, this method requires the steam turbine valve to be in a throttling state (when a single valve is adjusted, all valves must be throttled; when a sequential valve is adjusted, a certain valve is throttled), sacrificing the unit's operating economy to meet the AGC control requirements. For this reason, some units adopt the method of sliding pressure operation with the steam turbine valve fully open. They do not directly participate in load regulation or steam pressure control during variable load, and only the boiler responds to changes in load instructions. Due to the large thermal inertia of the boiler, if advanced control methods are not adopted, the power grid dispatching requirements for the unit's AGC variable load performance cannot be met. In the process of load variation, in order to fully utilize or release the heat storage of the unit, the boiler combustion rate command overshoot control is required, that is, when the load is increased, in addition to the increase of the coal-water command in the same proportion, the rated overshoot needs to be increased, and the overshoot is reset at the end of the load variation; on the contrary, in the process of load reduction, in addition to the reduction of the coal-water command in the same proportion, it is also reduced a little more, and the overshoot is reset at the end of the load variation.
[0031] The conventional overshoot method is to increase or decrease the corresponding amount of coal and water synchronously with the change of load command. If the steam turbine valve is not involved in the adjustment, the load response capability of the unit cannot be effectively improved. Especially in the unit RB, it is easy to have inaccurate water addition control, resulting in excessive drop in boiler steam temperature, which in turn causes abnormal shutdown of the unit. For example, after the primary fan / air preheater RB is triggered, 150 tons of water is automatically added. At this time, if the oil gun is not successfully put into use, the steam temperature will drop too much.
[0032] In order to solve the above problems, the present disclosure provides a control method, device, storage medium and electronic device for a coal-fired generator set, wherein the control method for the coal-fired generator set includes obtaining the RB type and the number of oil guns of the coal-fired generator set, wherein the RB type includes a primary fan RB or an air preheater RB; determining the target control parameters of the coal-fired generator set according to the RB type and the number of oil guns; and controlling the water supply system of the coal-fired generator set according to the target control parameters. Through the above method, in the case of a coal-fired generator set RB, the water supply system of the coal-fired generator set is timely controlled according to the RB type and the number of oil guns, so that the unit load of the coal-fired generator set drops rapidly with the operation of the water supply system, ensuring the stable operation of the equipment, facilitating the coordinated adjustment of wind, coal and water after the RB is triggered, and maintaining the stability of the air temperature and boiler during the RB.
[0033] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
[0034] Figure 1 is a flow chart of a control method for a coal-fired power generation unit according to an exemplary embodiment. Figure 1 As shown, the method for controlling the coal-fired power generation unit is used in a coal-fired power generation unit, and includes the following steps.
[0035] In step S101, the RB type and the number of oil guns of the coal-fired power generation unit are obtained.
[0036] Among them, the RB type includes a primary fan RB or an air preheater RB.
[0037] In some embodiments, the RB type may further include: a feed water pump RB or a coal mill RB.
[0038] In some embodiments, step S101 may include: obtaining a trip signal in the coal-fired generator set, and determining the RB type of the coal-fired generator set according to the trip signal; obtaining an oil gun signal in the coal-fired generator set, and determining the number of oil guns according to the oil gun signal.
[0039] In step S102, target control parameters of the coal-fired power generation unit are determined according to the RB type and the number of oil guns.
[0040] In some embodiments, the target control parameters may include water supply waiting time and water addition amount.
[0041] In some embodiments, the target control parameters may also include: target pressure value, variable pressure rate, target load, variable load rate, mill jump interval time, override closing instruction of the fan blades in the wind and smoke system, and water supply inertia time of the water supply system.
[0042] In step S103, the water supply system of the coal-fired power generation unit is controlled according to the target control parameters.
[0043] In some embodiments, step S103 may include: controlling the water supply system of the coal-fired power generation unit to add water according to the water supply waiting time and the water addition amount. Different RB types have different water supply waiting times.
[0044] It can be understood that due to the different response time characteristics of fuel and water supply, the second-order inertia time of the water supply waiting time is increased by a variable parameter of the variable load. That is to say, the effect of water supply is delayed by the third-order inertia, and the setting of water supply instructions in different RB types is adjusted by differentially setting the water supply waiting time.
[0045] Through the above technical scheme, in the case of RB of the coal-fired power generating unit, the water supply system of the coal-fired power generating unit is timely controlled according to the RB type and the number of oil guns. While the unit load of the coal-fired power generating unit decreases rapidly with the operation of the water supply system, the extent of the decrease in the boiler steam temperature is controlled to avoid abnormal shutdown of the unit due to excessive drop in steam temperature, which is beneficial to the coordinated adjustment of wind, coal and water after RB is triggered, and maintains the stability of air temperature and boiler during RB.
[0046] In some embodiments, the control method of the coal-fired power generation unit may further include: controlling the RB to execute according to the target control parameter. According to the target control parameter, controlling the RB to execute includes the following methods.
[0047] Method 1: When an important single-side auxiliary machine fails and RB is triggered, CCS enters turbine follow mode (TF), uses the turbine regulating valve to control the main steam pressure in front of the machine, and adjusts it according to the set target pressure and pressure change rate.
[0048] Method 2: The fuel system quickly reduces fuel by quickly tripping the coal mill to release the heat stored in the boiler, and adjusts the speed of the coal mill according to the load reduction rate, thereby controlling the rate of change of the coal amount.
[0049] Method 3: The three fans adjust the air volume, primary air pressure and furnace pressure of the boiler through proportional-integral-differential (PID) calculation, and set the overrunning logic of the fan blades to ensure that the furnace is in a stable combustion condition. In other words, when the fan on one side fails, the fan on the other side will instantly increase its output. In order to prevent the fan from over-output and over-current, the upper limit of the blade opening is limited.
[0050] Method 4: Control the water supply system to add water according to the water supply waiting time and the amount of water added. In addition, when the fuel is reduced rapidly, the overrun of the cooling water valve is also an important means to control the steam temperature.
[0051] Through the above method, when RB occurs in the DC boiler unit, the purpose of rapid load reduction of the unit can be achieved through the coordinated actions of the fuel, air and smoke, steam and water subsystems.
[0052] In some embodiments, the control method of the above-mentioned coal-fired power generation unit may further include: determining the output power and current unit load of the coal-fired power generation unit according to the fuel amount of the coal-fired power generation unit; and determining the RB rate according to the output power and the current unit load. The RB rate includes the RB rate of the feedwater pump, and the RB target value includes the RB target value of the feedwater pump.
[0053] In a possible implementation, the calculation method of the RB rate may include: calculating the ratio of the current unit load to the output power corresponding to the fuel. Since the current unit load and the output power corresponding to the fuel are both dynamically changing values, the ratio of the current unit load to the output power corresponding to the fuel is also a dynamically changing value. Determine whether one of the feedwater pumps has tripped. When it has not tripped, the switching module T1 outputs the ratio of the current unit load to the output power corresponding to the fuel, otherwise it outputs the ratio at the previous moment. Exemplarily, the RB rate can be determined according to the formula RB rate = output value of the assignment module A1 × output value of the switching module T1.
[0054] In a possible implementation, when the generator set is running at reduced load, the operating curve of the main steam pressure setting value is switched from the normal operating sliding pressure curve F(x) to the sliding pressure curve F1(x) of the feedwater pump RB through the switching module, and then further processed accurately through inertia delay processing and change rate limitation. Among them, the delay time in the inertia delay processing can be determined by the current unit load calculation.
[0055] Through the above method, the amount of fuel input to the boiler is reduced to the amount of fuel corresponding to the RB target value according to the RB rate adjustment, and the unit load will drop rapidly as the amount of fuel decreases. By regulating various parameters such as the amount of fuel in the boiler system, the main steam pressure setting value on the turbine side, and the water supply on the water supply system side and corresponding equipment, the unit load can be quickly adjusted to ensure that the unit load and main parameters are within the controllable range.
[0056] In one embodiment, see Figure 2 , step S102 includes the following steps.
[0057] In step S1021, the water supply waiting time is determined according to the RB type.
[0058] In one embodiment, step S1021 includes: In the case where the RB type is a primary fan RB, the preset first water supply inertia time is used as the water supply waiting time; or, When the RB type is an air preheater RB, the preset second water supply inertia time is used as the water supply waiting time.
[0059] In this embodiment, the primary air fan refers to a fan that supplies primary air required for the combustion of boiler fuel. According to its installation position in the system, it can be divided into a cold primary air fan and a hot primary air fan.
[0060] In this embodiment, the air preheater refers to the heating surface where the flue gas in the tail flue of the boiler preheats the air before entering the boiler to a certain temperature through the internal heat sink. It is a device used to improve the heat exchange performance of the boiler and reduce energy consumption.
[0061] Exemplarily, the first water supply inertia time is 8 seconds, and the second water supply inertia time is 10 seconds.
[0062] Through the above method, the water supply inertia time is set differently, which is conducive to the coordinated adjustment of wind, coal and water after RB is triggered.
[0063] In step S1022, the amount of water to be added is determined according to the number of oil guns and the preset unit oil gun water supply amount.
[0064] For example, the amount of water to be added can be calculated using the following formula:
[0065] In the above formula, x is the unit load (MW), y is the water supply, and A is the number of oil guns.
[0066] For example, the amount of water added can be obtained through the following corresponding relationship:
[0067] Where x is the unit load (MW) and y is the water supply.
[0068] In a possible implementation, after step S1022, the control method of the coal-fired power generation unit further includes: determining whether the amount of water added is greater than a preset maximum water addition threshold, and if the amount of water added is greater than the preset water addition threshold, controlling the water supply system of the coal-fired power generation unit according to the maximum water addition threshold. Exemplarily, the maximum water addition threshold may be 80 tons.
[0069] Through the above method, the control accuracy of the water-to-coal ratio of the coal-fired power generation unit is improved, ensuring the safe and stable operation of the unit within the full load range, overcoming the problem of large disturbances that are prone to occur in the coal-fired power generation unit during water supply, and making the system run more smoothly.
[0070] In one embodiment, the control method of the coal-fired power generation unit further includes: obtaining the current water supply flow of the water supply system; step S103 includes: The water supply system of the coal-fired power generation unit is controlled according to the current water supply flow, water supply waiting time and water addition amount.
[0071] In one possible implementation, controlling the water supply system of a coal-fired generator set according to a current water supply flow rate, a water supply waiting time, and a water addition amount may include: determining the operating condition of the coal-fired generator set, and controlling the water supply system of the coal-fired generator set according to the operating condition, the current water supply flow rate, the water supply waiting time, and the water addition amount.
[0072] It is understandable that for coal-fired power generation units, any load condition corresponds to its specific stable operating value. When the operating conditions change, the unit parameters will almost always reach new stable values as the conditions change. The new stable value is only related to the stable conditions at this time, and has nothing to do with the process of condition change. Therefore, for the operating point in a stable state, there are certain definite relationships between the state variables (boiler load, total coal feed, total water feed, boiler main steam flow, main steam pressure), and under different load stable states, the parameter values of the system are also different. Therefore, according to the main operating load range of the coal-fired power generation unit, multiple typical operating points are divided, and the optimal water feed corresponding to multiple typical operating points are determined respectively. For example, the main operating load range is divided into five operating conditions, namely: the boiler's lowest stable combustion load operating point, the rated maximum load operating point, lower load, medium load and higher load, among which low load, medium load and higher load are between the boiler's lowest stable combustion load operating point and the rated maximum load operating point. Then, the technical personnel conduct unit load increase and decrease tests, and use the internal model tuning method to tune and calculate the PID parameters of the intermediate point temperature correction feed water quantity loop to obtain the feed water quantity that makes the water-coal ratio of the coal-fired power generation unit appropriate and stable. Allowable state.
[0073] Through the above method, the regulation quality of the water-coal ratio of the coal-fired power generation unit is improved, the problems of boiler water-coal ratio imbalance and inaccurate water feed flow are avoided, and the phenomenon of water-coal ratio imbalance that is prone to occur in the coal-fired power generation unit when the load changes significantly is reduced.
[0074] In some embodiments, the control method of the above-mentioned coal-fired power generation unit also includes: checking whether the automatic switching of the factory power is normal, if the switching is abnormal, performing maintenance until the switching is normal, and then performing other steps.
[0075] Thus, after a coal-fired generator unit trips, it is necessary to immediately find the cause of the trip and quickly repair it to avoid tripping again.
[0076] Figure 3 is a block diagram of a device for controlling a coal-fired power generation unit according to an exemplary embodiment. Figure 3The device includes an acquisition module 301, a determination module 302 and a control module 303.
[0077] The acquisition module 301 is used to acquire the RB type and the number of oil guns of the coal-fired power generation unit when a trip signal is detected in the coal-fired power generation unit. The RB type includes a primary fan RB or an air preheater RB. A determination module 302 is used to determine target control parameters of the coal-fired power generation unit according to the RB type and the number of oil guns; The control module 303 is used to control the water supply system of the coal-fired power generation unit according to the target control parameters.
[0078] In one embodiment, the determination module 302 is further configured to: Determine the water supply waiting time according to the RB type; Determine the amount of water to be added based on the number of oil guns and the preset water supply per unit oil gun.
[0079] In one embodiment, the determination module 302 is further configured to: In the case where the RB type is a primary fan RB, the preset first water supply inertia time is used as the water supply waiting time; or, When the RB type is an air preheater RB, the preset second water supply inertia time is used as the water supply waiting time.
[0080] In one embodiment, the acquisition module 301 is further used to: Get the current water flow of the water supply system; The control module 303 is further used for: The water supply system of the coal-fired power generation unit is controlled according to the current water supply flow, water supply waiting time and water addition amount.
[0081] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.
[0082] Figure 4 FIG. 4 is a block diagram of an electronic device 400 according to an exemplary embodiment. Figure 4 As shown, the electronic device 400 may include: a processor 401 , a memory 402 . The electronic device 400 may also include one or more of a multimedia component 403 , an input / output (I / O) interface 404 , and a communication component 405 .
[0083] The processor 401 is used to control the overall operation of the electronic device 400 to complete all or part of the steps in the control method of the above-mentioned coal-fired power generation unit. The memory 402 is used to store various types of data to support the operation of the electronic device 400, and these data may include instructions for any application or method used to operate on the electronic device 400, and application-related data, such as contact data, messages sent and received, pictures, audio, video, etc. The memory 402 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), programmable read-only memory (Programmable Read-Only Memory, PROM), read-only memory (Read-Only Memory, ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 403 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 402 or sent through the communication component 405. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 404 provides an interface between the processor 401 and other interface modules, and the above-mentioned other interface modules may be keyboards, mice, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 405 may include: Wi-Fi module, Bluetooth module, NFC module, etc.
[0084] In an exemplary embodiment, the electronic device 400 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned control method of the coal-fired power generation unit.
[0085] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the control method of the above-mentioned coal-fired power generation set are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 402 including program instructions, and the above-mentioned program instructions can be executed by the processor 401 of the electronic device 400 to complete the above-mentioned control method of the coal-fired power generation set.
[0086] In another exemplary embodiment, a computer program product is also provided. The computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for executing the above-mentioned control method of the coal-fired power generation unit when executed by the programmable device.
[0087] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0088] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0089] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. A control method for a coal-fired power generation unit, characterized in that: include: Obtain the auxiliary machine fault load reduction RB type and the number of oil guns of the coal-fired power generation unit, wherein the RB type includes a primary fan RB or an air preheater RB; Determining target control parameters of the coal-fired power generation unit according to the RB type and the number of the oil guns; According to the target control parameter, the water supply system of the coal-fired power generation unit is controlled.
2. The control method of a coal-fired power generation unit according to claim 1, characterized in that: The target control parameters include the water supply waiting time and the water addition amount. The target control parameters of the coal-fired power generation unit determined according to the RB type and the number of oil guns include: Determining the water supply waiting time according to the RB type; The amount of water added is determined according to the number of the oil guns and the preset water supply per unit oil gun.
3. The control method of a coal-fired power generation unit according to claim 2, characterized in that: Determining the water supply waiting time according to the RB type includes: In the case where the RB type is the primary fan RB, the preset first water supply inertia time is used as the water supply waiting time; or, When the RB type is the air preheater RB, the preset second water supply inertia time is used as the water supply waiting time.
4. The control method of a coal-fired power generation unit according to claim 2, characterized in that: The method further comprises: Obtaining the current water supply flow of the water supply system; The controlling the water supply system of the coal-fired power generation unit according to the target control parameter comprises: The water supply system of the coal-fired power generation unit is controlled according to the current water supply flow rate, the water supply waiting time and the water addition amount.
5. A control device for a coal-fired power generation unit, characterized in that: include: An acquisition module, used to acquire the RB type and the number of oil guns of the coal-fired power generation unit, wherein the RB type includes a primary fan RB or an air preheater RB; A determination module, used to determine the target control parameters of the coal-fired power generation unit according to the RB type and the number of oil guns; A control module is used to control the water supply system of the coal-fired power generation unit according to the target control parameter.
6. The control device of the coal-fired power generation unit according to claim 5, characterized in that: The target control parameters include the water supply waiting time and the amount of water added. The determination module is also used to: Determining the water supply waiting time according to the RB type; The amount of water added is determined according to the number of the oil guns and the preset water supply per unit oil gun.
7. The control device of the coal-fired power generation unit according to claim 6, characterized in that: The determining module is further used for: In the case where the RB type is the primary fan RB, the preset first water supply inertia time is used as the water supply waiting time; When the RB type is the air preheater RB, the preset second water supply inertia time is used as the water supply waiting time.
8. The control device of the coal-fired power generation unit according to claim 6, characterized in that: The acquisition module is further used for: Obtaining the current water supply flow of the water supply system; The control module is also used for: The water supply system of the coal-fired power generation unit is controlled according to the current water supply flow rate, the water supply waiting time and the water addition amount.
9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 4 are implemented.
10. An electronic device, characterized in that: include: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 4.