CN116679555A - Control method and device for coal-fired power plant system operation - Google Patents
Control method and device for coal-fired power plant system operation Download PDFInfo
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Abstract
The application relates to the technical field of variable load control, in particular to a control method and a device for the system operation of a coal-fired power plant. The method is suitable for adjusting the output power of the coal-fired power plant in a specific time period, and comprises the following steps: calculating the power adjustable range of high-delay auxiliary equipment in the coal-fired power plant; the high-delay auxiliary equipment is auxiliary equipment with the time for changing the operating power of the auxiliary equipment to influence other systems in the coal-fired power plant within a specific time period exceeding a preset time threshold; acquiring target output power of the coal-fired power plant; the operating power of the high-delay auxiliary equipment is adjusted within the power adjustable range to reduce or increase the output power of the coal-fired power plant to the target output power within a specific period of time. According to the method provided by the application, the operation power of the high-delay auxiliary equipment is changed so as to change the station power proportion, the output power of the power plant is changed under the condition that the generating power of the unit is unchanged, and the flexibility of load following of the coal-fired power station is improved.
Description
Technical Field
The application relates to the technical field of variable load control, in particular to a control method for the operation of a coal-fired power plant system, a control device for the operation of the coal-fired power plant system and a machine-readable storage medium.
Background
China is scientifically and orderly pushing the realization of a 'double carbon' strategic target and pushing the energy structure to change. On the premise of ensuring the energy supply safety, the coal-electricity loading accounting for over 40 percent of national carbon emission is continuously reduced, renewable energy sources such as wind power, photovoltaic and the like are greatly developed, and the coordinated development of multiple energy sources is promoted. Wind energy and solar energy have strong time-varying characteristics, so that the generation and the digestion of renewable energy sources are difficult. Therefore, the coal-fired power plant needs to frequently perform a load-changing process to balance the supply and demand of the power grid. However, the thermodynamic system of the coal-fired power plant is huge, delay caused by thermal inertia is remarkable, and the aim is difficult to finish when the load is required to be changed rapidly.
Disclosure of Invention
The embodiment of the application aims to provide a control method, a device and a storage medium for the operation of a coal-fired power plant system.
In order to achieve the above object, a first aspect of the present application provides a control method for system operation of a coal-fired power plant, adapted for short-term adjustment of output power of the coal-fired power plant, the method comprising: calculating the power adjustable range of high-delay auxiliary equipment in the coal-fired power plant; the high-delay auxiliary equipment is auxiliary equipment with the time for changing the operating power of the auxiliary equipment to influence other systems in the coal-fired power plant within a specific time period exceeding a preset time threshold; acquiring target output power of the coal-fired power plant; the operating power of the high-delay auxiliary equipment is adjusted within the power adjustable range to reduce or increase the output power of the coal-fired power plant to the target output power within a specific period of time.
Based on the first aspect, in some embodiments of the application, before adjusting the operating power of the high-delay auxiliary equipment within the power adjustable range, the method further comprises: acquiring the current output power of the coal-fired power plant; calculating the difference between the target output power and the current output power; and judging whether the operating power of the high-delay auxiliary equipment needs to be increased or decreased according to the positive and negative of the difference value.
Based on the first aspect, in some embodiments of the application, the high-delay auxiliary equipment includes: a first auxiliary device and a second auxiliary device; the method further includes, before adjusting the operating power of the high-delay auxiliary equipment within the power adjustable range: determining an order of adjustment of the operating powers of the first auxiliary device and the second auxiliary device, comprising: judging whether the time of the first auxiliary equipment affecting other systems is not less than that of the second auxiliary equipment; if yes, the operation power of the first auxiliary equipment is preferentially adjusted; otherwise, the operating power of the second auxiliary device is preferably set.
Based on the first aspect, in some embodiments of the application, the calculating the power adjustable range of the high-delay auxiliary equipment includes: calculating power adjustable ranges of the first auxiliary equipment and the second auxiliary equipment respectively, wherein the power adjustable ranges comprise: if the current operating power of the first auxiliary equipment is W 1 The upper limit of the operation power of the first auxiliary equipment is W 1,max The lower limit of the operation power of the first auxiliary equipment is W 1,min The method comprises the steps of carrying out a first treatment on the surface of the The power up adjustable amount of the first auxiliary equipment is: ΔP in,1 ＝W 1 -W 1,min The method comprises the steps of carrying out a first treatment on the surface of the The power-down adjustable amount of the first auxiliary equipment is: ΔP de,1 ＝W 1,max -W 1 The method comprises the steps of carrying out a first treatment on the surface of the If the current operating power of the second auxiliary equipment is W 2 The upper limit of the operating power of the second auxiliary equipment is W 2,max The lower limit of the operating power of the second auxiliary equipment is W 2,min The method comprises the steps of carrying out a first treatment on the surface of the The boost power adjustable amount of the second auxiliary equipment is: ΔP in,2 ＝W 2 -W 2,min The method comprises the steps of carrying out a first treatment on the surface of the The power-down adjustable amount of the second auxiliary equipment is: ΔP de,2 ＝W 2,max -W 2 。
Based on the first aspect, in some embodiments of the application, if the target output power is P e The current output power is P 0 The method comprises the steps of carrying out a first treatment on the surface of the Judging whether the running power of the high-delay auxiliary equipment needs to be increased or decreased according to the positive and negative of the difference value, wherein the method comprises the following steps: if P e -P 0 If the power is more than 0, the operation power of the delay auxiliary equipment needs to be reduced; if P e -P 0 And < 0, the operating power of the delay auxiliary equipment needs to be increased.
Based on the first aspect, in some embodiments of the present application, if the first auxiliary equipment has an influence on other systems for a longer time than the second auxiliary equipment; the adjusting the operating power of the high-delay auxiliary equipment in the power adjustable range comprises the following steps: judging P e -P 0 Whether or not to meet DeltaP de,1 ≥P e -P 0 > 0, if so, adjusting the operating power of the first auxiliary equipment to reduce P e -P 0 The method comprises the steps of carrying out a first treatment on the surface of the Judging P e -P 0 Whether or not to satisfy-DeltaP in,1 ≤P e -P 0 < 0, if so, regulating the operating power of the first auxiliary equipment to increase by P 0 -P e The method comprises the steps of carrying out a first treatment on the surface of the Judging P e -P 0 Whether or not (DeltaP) de,1 +ΔP de,2 )≥(P e -P 0 )＞ΔP de,1 If yes, first adjustOperating power reduction Δp of auxiliary equipment de,1 Readjusting the second auxiliary equipment lowering (P e -P 0 )-ΔP de,1 The method comprises the steps of carrying out a first treatment on the surface of the Judging P e -P 0 Whether or not to satisfy- (delta P) in,1 +ΔP in,2 )≤(P e -P 0 )＜ΔP in,1 If yes, adjusting the operation power of the first auxiliary equipment to increase by delta P in,1 Readjusting the second auxiliary equipment elevation (P 0 -P e )-ΔP in,1 。
Based on the first aspect, in some embodiments of the present application, if the first auxiliary equipment is a coal mill and the second auxiliary equipment is a condenser circulating water pump, the operation power of the coal mill is preferentially adjusted.
Based on the first aspect, in some embodiments of the application, the high-delay auxiliary equipment further includes: and (3) a condenser fan in the indirect air cooling system preferentially adjusts the running power of the condenser fan.
In a second aspect, the present application provides a control apparatus for the operation of a coal-fired power plant system adapted for short term regulation of the output power of a coal-fired power plant, the apparatus comprising: the calculation module is used for calculating the power adjustable range of the high-delay auxiliary equipment in the coal-fired power plant; the high-delay auxiliary equipment is auxiliary equipment with the time for changing the operating power of the auxiliary equipment to influence other systems in the coal-fired power plant within a specific time period exceeding a preset time threshold; the acquisition module is used for acquiring target output power of the coal-fired power station; and the adjusting module is used for adjusting the operating power of the high-delay auxiliary equipment in the power adjustable range so as to reduce or increase the output power of the coal-fired power plant to the target output power in a specific time period.
In a third aspect, the application provides a machine-readable storage medium having instructions stored thereon that, when executed by a processor, cause the processor to be configured to perform the method of controlling operation of a coal-fired power plant system described above.
According to the method provided by the application, the power of high-delay equipment such as the boiler coal mill, the condenser circulating water pump and the like is changed to change the station power proportion, and the output power is changed under the condition that the generating power of the unit is unchanged.
Additional features and advantages of embodiments of the application will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain, without limitation, the embodiments of the application. In the drawings:
FIG. 1 schematically illustrates a flow diagram of a control method of coal-fired power plant system operation in accordance with an embodiment of the present application;
fig. 2 schematically shows an internal structural view of a computer device of an embodiment of the present application.
Description of the reference numerals
102-terminal; 104-a server; a01-a processor; a02-a network interface; a03-an internal memory; a04-a display screen; a05-an input device; a06—a nonvolatile storage medium; b01-operating system; b02-computer program.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it should be understood that the detailed description described herein is merely for illustrating and explaining the embodiments of the present application, and is not intended to limit the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that, if directional indications (such as up, down, left, right, front, rear, etc.) are involved in the embodiment of the present application, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Example 1
The thermodynamic system of the coal-fired power plant has complex equipment, huge capacity and obvious thermal inertia, and the coal-fired power plant is affected by strong delay when a load change instruction is given to the electric network, so that the coal-fired power plant is difficult to quickly respond. For short-term, rapid load change instructions, power plants often need to be completed in tens of seconds, while coal-fired power plant equipment is not operational for a specified period of time. On the other hand, the station power utilization rate of the coal-fired power plant can reach 3% -5%, and the method has a considerable part of variable load potential. The load-changing method for the coal-fired power plant is feasible by changing the electric quantity of the auxiliary equipment so as to change the full-field output electric quantity and correcting the electric quantity by other measures before the operation change of the auxiliary equipment affects the thermodynamic system. To this end, the present embodiment proposes a control method for the operation of a coal-fired power plant system, which is suitable for short-term adjustment of the output power of a coal-fired power plant, the method comprising:
s1, calculating the power adjustable range of high-delay auxiliary equipment in the coal-fired power plant; the high-delay auxiliary equipment is auxiliary equipment with the time for changing the operating power of the auxiliary equipment to influence other systems in the coal-fired power plant within a specific time period exceeding a preset time threshold;
specifically, other systems herein, in this embodiment, refer primarily to the thermodynamic system of the coal-fired power plant, and specific periods of time refer to a shorter period of time, such as tens of seconds to one minute or one minute.
Further, to calculate the power adjustable range of the high-delay auxiliary equipment, it is first necessary to determine a specific high-delay auxiliary equipment. If there is more than one (or one) high-delay auxiliary equipment, the adjusting sequence and the total power adjustable range are further determined. For example, if the high-delay auxiliary equipment includes a first auxiliary equipment and a second auxiliary equipment; then:
1) Determining an adjustment sequence, specifically comprising:
judging whether the time of the first auxiliary equipment affecting other systems is not less than that of the second auxiliary equipment; if yes, the operation power of the first auxiliary equipment is preferentially adjusted; otherwise, the operating power of the second auxiliary device is preferably set. For example, the first auxiliary equipment is a coal mill, the second auxiliary equipment is a condenser circulating water pump, and the coal mill system has an effect on a thermodynamic system longer than the circulating water pump, so that the power of the coal mill is firstly selected to be adjusted when the output power of the coal-fired power plant needs to be changed.
2) Calculating a power adjustable range, comprising:
calculating power adjustable ranges of the first auxiliary equipment and the second auxiliary equipment respectively specifically comprises the following steps:
if the current operating power of the first auxiliary equipment is W 1 (MW) the upper limit of the operation power of the first auxiliary equipment is W 1,max (MW) the lower limit of the operation power of the first auxiliary equipment is W 1,min (MW)；
The power up adjustable amount of the first auxiliary equipment is: ΔP in,1 ＝W 1 -W 1,min ；
The power-down adjustable amount of the first auxiliary equipment is: ΔP de,1 ＝W 1,max -W 1 ；
If the current operating power of the second auxiliary equipment is W 2 (MW) the upper limit of the operating power of the second auxiliary equipment is W 2,max (MW), secondThe lower limit of the operation power of auxiliary equipment is W 2,min (MW)；
The boost power adjustable amount of the second auxiliary equipment is: ΔP in,2 ＝W 2 -W 2,min ；
The power-down adjustable amount of the second auxiliary equipment is: ΔP de,2 ＝W 2,max -W 2 ；
In summary, the total power adjustable range of the high-delay auxiliary equipment is as follows:
the power-up adjustable quantity of the high-delay auxiliary equipment is as follows: ΔP in,1 ＝W 1 +W 2 -W 1,min -W 2,min ；
The power-up adjustable quantity of the high-delay auxiliary equipment is as follows: ΔP in,1 ＝W 1,max +W 2,max -W 1 -W 2 。
S2, obtaining target output power of the coal-fired power plant;
specifically, the current output power is required to be clarified, and the operation power of the high-delay auxiliary equipment can be judged to be increased or decreased according to the positive and negative of the difference value by calculating the difference value between the target output power and the current output power; and judging the operation power of the high-delay auxiliary equipment to be regulated according to the difference value.
1) Judging whether the running power of the high-delay auxiliary equipment needs to be increased or decreased according to the positive and negative of the difference value, wherein the method comprises the following steps of:
if the target output power is P e (MW) the current output power is P 0 (MW), then:
if P e -P 0 If the power is more than 0, the operation power of the delay auxiliary equipment needs to be reduced;
if P e -P 0 And < 0, the operating power of the delay auxiliary equipment needs to be increased.
S3, adjusting the operation power of the high-delay auxiliary equipment in the power adjustable range so as to reduce or increase the output power of the coal-fired power plant to the target output power in a specific time period;
the specific steps for adjusting the high-delay auxiliary equipment by combining the S2 to S3 are as follows:
judging P e -P 0 Whether or not to meet DeltaP de,1 ≥P e -P 0 > 0, if so, adjusting the operating power of the first auxiliary equipment to reduce P e -P 0 ；
Judging P e -P 0 Whether or not to satisfy-DeltaP in,1 ≤P e -P 0 < 0, if so, regulating the operating power of the first auxiliary equipment to increase by P 0 -P e ；
Judging P e -P 0 Whether or not (DeltaP) de,1 +ΔP de,2 )≥(P e -P 0 )＞ΔP de,1 If yes, adjusting the operation power of the first auxiliary equipment to reduce delta P de,1 Readjusting the second auxiliary equipment lowering (P e -P 0 )-ΔP de,1 ；
Judging P e -P 0 Whether or not to satisfy- (delta P) in,1 +ΔP in,2 )≤(P e -P 0 )＜-ΔP in,1 If yes, adjusting the operation power of the first auxiliary equipment to increase by delta P in,1 Readjusting the second auxiliary equipment elevation (P 0 -P e )-ΔP in,1 。
If P e -P 0 If the power consumption of the auxiliary equipment is not within the above interval range, it means that the power output requirement cannot be achieved by adjusting the power consumption of the auxiliary equipment, and at this time, the power output requirement can be achieved by considering a coordinated control system of the starter furnace, for example, by changing the water supply amount and the coal supply amount and changing the output force of the boiler.
In addition, when the load changing process is completed, the power of the coal mill system and the circulating water pump needs to be restored to the original steady-state operation condition, and at the moment, the main steam regulating valve needs to be started to regulate the power.
Example 2
If the condenser of the coal-fired unit is indirectly air-cooled, the operation power of the condenser fan is preferentially adjusted because the time delay required for influencing the thermodynamic system by the cooling air quantity is longest (compared with the coal mill and the condenser circulating water pump in the embodiment 1). The current running power of the condenser fan is W 3 (MW) operational power of condenser fanThe upper limit is W 3,max (MW) the lower limit of the operation power of the first auxiliary equipment is W 3,min (MW)；
The adjustable power rise of the condenser fan is as follows: ΔP in,3 ＝W 3 -W 3,min ；
The adjustable power reduction of the condenser fan is as follows: ΔP de,3 ＝W 3,max -W 3 ；
When the target load P e (MW) and current Power P 0 (MW) meet- ΔP de,3 ≤P e -P 0 ≤ΔP in,3 When the variable load device is used, the power of the coal mill and the circulating water pump is not required to be adjusted, and the variable load requirement can be met by only adjusting the fan of the condenser; if P e -P 0 <-ΔP de,3 The power of a fan of the condenser is regulated to the maximum, and then the power of a coal mill and a circulating water pump is increased; if P e -P 0 >ΔP in,3 And adjusting the power of the condenser fan to the lowest, and reducing the power of the coal mill and the circulating water pump.
After the load changing process is completed, the auxiliary equipment needs to be restored to a steady-state set working condition in sequence, and the auxiliary equipment is a coal mill and a circulating water pump in sequence. If the unit adopts an indirect air-cooled condenser, the condenser fan is restored to a steady-state working condition after the circulating water pump is restored to the steady-state working condition.
Example 3
The embodiment provides a control device for coal-fired power plant system operation, is applicable to the output power of adjusting coal-fired power plant in specific time quantum, and the device includes: the calculation module is used for calculating the power adjustable range of the high-delay auxiliary equipment in the coal-fired power plant; the high-delay auxiliary equipment is auxiliary equipment with the time for changing the operating power of the auxiliary equipment to influence other systems in the coal-fired power plant within a specific time period exceeding a preset time threshold; the acquisition module is used for acquiring target output power of the coal-fired power station; and the adjusting module is used for adjusting the operating power of the high-delay auxiliary equipment in the power adjustable range so as to reduce or increase the output power of the coal-fired power plant to the target output power in a specific time period.
The control device for the operation of the coal-fired power plant system comprises a processor and a memory, wherein the modules and the like are stored in the memory as program units, and the processor executes the program modules stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel can be provided with one or more than one, and the control method for the operation of the coal-fired power plant system is realized by adjusting the kernel parameters.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the application provides a storage medium, wherein a program is stored on the storage medium, and the program is executed by a processor to realize the control method for the operation of the coal-fired power station system.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 2. The computer apparatus includes a processor a01, a network interface a02, a display screen a04, an input device a05, and a memory (not shown in the figure) which are connected through a system bus. Wherein the processor a01 of the computer device is adapted to provide computing and control capabilities. The memory of the computer device includes an internal memory a03 and a nonvolatile storage medium a06. The nonvolatile storage medium a06 stores an operating system B01 and a computer program B02. The internal memory a03 provides an environment for the operation of the operating system B01 and the computer program B02 in the nonvolatile storage medium a06. The network interface a02 of the computer device is used for communication with an external terminal through a network connection. The computer program, when executed by the processor a01, implements a method for controlling the operation of a coal-fired power plant system. The display screen a04 of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device a05 of the computer device may be a touch layer covered on the display screen, or may be a key, a track ball or a touch pad arranged on a casing of the computer device, or may be an external keyboard, a touch pad or a mouse.
It will be appreciated by persons skilled in the art that the architecture shown in fig. 2 is merely a block diagram of some of the architecture relevant to the present inventive arrangements and is not limiting as to the computer device to which the present inventive arrangements are applicable, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.
In a typical configuration, the computing device includes one or more processors (CPUs), inputs +.
Output interface, network interface and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer-readable media include both permanent and non-permanent, removable and non-removable media, and information storage may be implemented by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (10)
1. A method for controlling operation of a coal-fired power plant system, adapted to regulate the output power of a coal-fired power plant during a specified time period, the method comprising:
calculating the power adjustable range of high-delay auxiliary equipment in the coal-fired power plant; the high-delay auxiliary equipment is auxiliary equipment with the time for changing the operating power of the auxiliary equipment to influence other systems in the coal-fired power plant within a specific time period exceeding a preset time threshold;
acquiring target output power of the coal-fired power plant;
the operating power of the high-delay auxiliary equipment is adjusted within the power adjustable range to reduce or increase the output power of the coal-fired power plant to the target output power within a specific period of time.
2. The method for controlling the operation of a coal-fired power plant system according to claim 1, wherein before adjusting the operation power of the high-delay auxiliary equipment within the power adjustable range, the method further comprises:
acquiring the current output power of the coal-fired power plant;
calculating the difference between the target output power and the current output power;
and judging whether the operating power of the high-delay auxiliary equipment needs to be increased or decreased according to the difference value.
3. The control method for the operation of the coal-fired power plant system according to claim 2, wherein the high-delay auxiliary equipment comprises: a first auxiliary device and a second auxiliary device; before the adjusting the operation power of the high-delay auxiliary equipment in the power adjustable range, the method further comprises:
determining an order of adjustment of the operating powers of the first auxiliary device and the second auxiliary device, comprising:
judging whether the time of the first auxiliary equipment affecting other systems is smaller than that of the second auxiliary equipment or not;
if not, preferentially adjusting the operation power of the first auxiliary equipment; if yes, the operation power of the second auxiliary equipment is preferentially adjusted.
4. A control method of coal-fired power plant system operation according to claim 3, characterized in that the calculating of the power adjustable range of the high-delay auxiliary equipment comprises:
calculating power adjustable ranges of the first auxiliary equipment and the second auxiliary equipment respectively specifically comprises the following steps:
if the current operating power of the first auxiliary equipment is W 1 The upper limit of the operation power of the first auxiliary equipment is W 1,max The lower limit of the operation power of the first auxiliary equipment is W 1,min The power-up adjustable amount of the first auxiliary equipment is: ΔP in,1 ＝W 1 -W 1,min The power reduction adjustable quantity of the first auxiliary equipment is as follows: ΔP de,1 ＝W 1,max -W 1 ；
If the current operating power of the second auxiliary equipment is W 2 The upper limit of the operating power of the second auxiliary equipment is W 2,max The lower limit of the operating power of the second auxiliary equipment is W 2,min The power-up adjustable amount of the second auxiliary equipment is: ΔP in,2 ＝W 2 -W 2,min The power-down adjustable amount of the second auxiliary equipment is as follows: ΔP de,2 ＝W 2,max -W 2 。
5. The combustion of claim 4The control method for the operation of the coal power station system is characterized in that if the target output power is P e The current output power is P 0 Judging whether the operating power of the high-delay auxiliary equipment needs to be increased or decreased according to the difference value, wherein the method comprises the following steps of:
if P e -P 0 If the power is more than 0, determining that the operation power of the high-delay auxiliary equipment needs to be reduced;
if P e -P 0 And < 0, determining that the operating power of the high-delay auxiliary equipment needs to be increased.
6. The method for controlling operation of a coal-fired power plant system according to claim 5, wherein adjusting the operation power of the high-delay auxiliary equipment within the power adjustable range if the time during which the first auxiliary equipment affects other systems is longer than the second auxiliary equipment, comprises:
judging P e -P 0 Whether or not to meet DeltaP de,1 ≥P e -P 0 > 0, if so, adjusting the operating power of the first auxiliary equipment to reduce P e -P 0 ；
Judging P e -P 0 Whether or not to satisfy-DeltaP in,1 ≤P e -P 0 < 0, if so, regulating the operating power of the first auxiliary equipment to increase by P 0 -P e ；
Judging P e -P 0 Whether or not (DeltaP) de,1 +ΔP de,2 )≥(P e -P 0 )＞ΔP de,1 If yes, adjusting the operation power of the first auxiliary equipment to reduce delta P de,1 Readjusting the second auxiliary equipment lowering (P e -P 0 )-ΔP de,1 ；
Judging P e -P 0 Whether or not to satisfy- (delta P) in,1 +ΔP in,2 )≤(P e -P 0 )＜-ΔP in,1 If yes, adjusting the operation power of the first auxiliary equipment to increase by delta P in,1 Readjusting the second auxiliary equipment elevation (P 0 -P e )-ΔP in,1 。
7. The method for controlling the operation of a coal-fired power plant system according to claim 2, wherein if the first auxiliary equipment is a coal mill and the second auxiliary equipment is a condenser circulating water pump, the operation power of the coal mill is preferentially adjusted.
8. The method according to claim 7, wherein if the high-delay auxiliary equipment includes a condenser fan in an indirect air cooling system, the operation power of the condenser fan is preferentially adjusted.
9. A control device for operation of a coal-fired power plant system adapted to regulate the output power of a coal-fired power plant during a specified time period, the device comprising:
the calculation module is used for calculating the power adjustable range of the high-delay auxiliary equipment in the coal-fired power plant; the high-delay auxiliary equipment is auxiliary equipment with the time for changing the operating power of the auxiliary equipment to influence other systems in the coal-fired power plant within a specific time period exceeding a preset time threshold;
the acquisition module is used for acquiring target output power of the coal-fired power station;
and the adjusting module is used for adjusting the operating power of the high-delay auxiliary equipment in the power adjustable range so as to reduce or increase the output power of the coal-fired power plant to the target output power in a specific time period.
10. A machine-readable storage medium having instructions stored thereon, which when executed by a processor cause the processor to be configured to perform the method of controlling operation of a coal-fired power plant system according to any of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310450141.2A CN116679555A (en) | 2023-04-24 | 2023-04-24 | Control method and device for coal-fired power plant system operation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310450141.2A CN116679555A (en) | 2023-04-24 | 2023-04-24 | Control method and device for coal-fired power plant system operation |
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