A system and method for intermittent dynamic adaptive gust control
By using an intermittent dynamic adaptive primary air control system, which utilizes an adjustable-blade primary air fan and an adaptive optimization module, the problem of rapid response in primary air pressure regulation of thermal power plants by traditional PID control is solved, achieving rapid stabilization of air pressure and safe combustion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-04-13
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional PID control cannot quickly eliminate disturbances in primary air pressure regulation in thermal power plants, leading to fluctuations in key parameters such as furnace negative pressure and main steam pressure, which affects furnace efficiency and combustion safety. In particular, frequent human intervention is required when the load or coal quality changes.
An intermittent dynamic adaptive primary air control system is adopted. Through an adjustable blade primary air fan, a fuel coal flow meter, and a hot primary air pressure gauge, combined with a primary air pressure dynamic adaptive optimization control module, the system can achieve automatic adjustment and rapid stabilization of primary air pressure, and use an optimized feedforward correction loop to quickly respond to disturbances.
This technology enables the primary air pressure to quickly stabilize near the set value under disturbance conditions, avoiding the overshoot phenomenon of conventional PID control and ensuring the safety and stability of boiler combustion.
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Figure CN114719286B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of automatic control of thermal power plants, and specifically relates to a system and method for intermittent dynamic adaptive primary air control. Background Technology
[0002] In thermal power plant units, primary air refers to the air that carries pulverized coal from the pulverized coal pipeline into the furnace. Its main function is to carry the pulverized coal into the furnace, meeting the air requirements for the preheating and combustion stages of pulverized coal combustion. It is the most important component of the total amount of air required for fuel combustion. Primary air pressure refers to the pressure of the hot primary air header after the air preheater. Primary air pressure regulation refers to maintaining the stability of primary air pressure through the control system. In coal-fired power plant units, primary air is the main power source for the boiler's fuel delivery system. The level of primary air pressure directly affects the injection of pulverized coal, and the primary air fan control needs to maintain a relatively stable hot primary air pressure. Otherwise, the amount of pulverized coal in the coal mill will fluctuate due to unstable primary air pressure, causing frequent fluctuations in key parameters such as furnace negative pressure and main steam pressure, affecting furnace efficiency and combustion safety. This can range from unstable flame combustion to furnace flameout or even furnace explosion.
[0003] Traditional control schemes typically involve setting a primary air pressure setpoint based on the coal feed rate into the boiler. Operators can then bias this setpoint within a specified range, using the measured hot primary air pressure as the controlled variable and a PID controller to maintain the primary air pressure near the setpoint. However, certain operating conditions, such as load changes or coal quality variations leading to rapid changes in the coal feed rate, or the start-up and shutdown of the coal mill's hot and cold air dampers, can cause primary air pressure disturbances. Conventional PID control cannot quickly eliminate these disturbances and may even cause pressure overshoot. These disturbances can lead to fluctuations in critical parameters such as furnace negative pressure and main steam pressure. In such cases, frequent manual intervention by the operator is required to maintain pressure stability, and untimely intervention can negatively impact furnace efficiency and combustion safety. Summary of the Invention
[0004] In view of the problems existing in the prior art, the present invention provides a system and method for intermittent dynamic adaptive primary air control.
[0005] This invention is achieved using the following technical solution:
[0006] A system employing intermittent dynamic adaptive primary air control includes an adjustable blade primary air fan, a coal feeder, a coal mill, an air preheater, a fuel coal flow meter, a hot primary air pressure gauge, and a primary air pressure dynamic adaptive optimization control module.
[0007] The adjustable blade primary air fan generates cold primary air. Part of the cold primary air is heated into hot primary air after passing through the air preheater. The other part of the cold primary air and the hot primary air enter the coal mill. At the same time, the coal feeder sends fuel coal into the coal mill. The fuel coal is crushed into coal powder in the coal mill. After the cold and hot primary air are mixed in the coal mill, the coal powder is transported to the boiler furnace for combustion.
[0008] The output terminals of the fuel coal flow meter and the hot primary air pressure meter are connected to the input terminal of the primary air pressure dynamic adaptive optimization control module. The output terminal of the primary air pressure dynamic adaptive optimization control module is connected to the input terminal of the adjustable primary air fan to control the primary air fan blades.
[0009] A further improvement of the present invention is that another portion of the cold primary air enters the coal mill through the cold primary air damper of the coal mill.
[0010] A further improvement of the present invention is that the hot primary air enters the coal mill through the hot primary air door of the coal mill.
[0011] A further improvement of the present invention is that the fuel flow meter is used to measure the amount of fuel FF entering the boiler, in t / h.
[0012] A further improvement of this invention is that the hot primary air pressure gauge is used to measure the hot primary air pressure PA, in kPa.
[0013] A further improvement of this invention is that the primary air pressure dynamic adaptive optimization control module is used to generate the primary air turbine blade control command AO, in units of %.
[0014] A method for intermittent dynamic adaptive primary air control, the method being based on the aforementioned system for intermittent dynamic adaptive primary air control, includes:
[0015] The reference value PAS0 for the primary air pressure target value controlled by the dynamic adaptive optimization control module is obtained based on the fuel quantity FF entering the boiler measured by the fuel coal flow meter. The operator corrects PAsp0 within a set range, such as within the range of -0.3 to +0.3 kPa. After correction, the target value PAsp for the primary air pressure controlled by the dynamic adaptive optimization control module is obtained. The actual rate of change of the hot primary air pressure PA is calculated based on the hot primary air pressure PA measured by the hot primary air pressure gauge. The difference between the target value PAsp and the hot primary air pressure PA is obtained by comparing PAsp and PAsp, where ΔPA = PA - PAsp. The target value DPAS for the rate of change of pressure has a fixed functional relationship with ΔPA. The target value DPAS for the rate of change of pressure is obtained based on ΔPA. The difference between the target value DPAS and the actual rate of change of pressure DPA is obtained by comparing DPAS and DPA, where ΔDPA = DPA - DPAS.
[0016] The primary air pressure dynamic adaptive optimization control module includes an intermittent dynamic adaptive primary air control optimization feedforward correction loop. The intermittent dynamic adaptive primary air control optimization feedforward correction loop generates control command feedforward DAO based on the ΔPA and ΔDPA signals generated by the system.
[0017] A further improvement of the present invention is that the difference between the primary air pressure PA and the target pressure value PAsp is ΔPA, and the difference between the actual pressure change rate DPA and the target pressure change rate value DPAS is ΔDPA, to determine whether the primary air pressure meets the requirements of the current working condition.
[0018] Specifically, if both ΔPA and ΔDPA are within the set range, such as ΔPA being between -0.08 and 0.08 kPa and ΔDPA being between -0.1 and 0.1 kPa / min, the primary air pressure is considered to meet the set value requirement, and the actual primary air pressure change rate also meets the requirement. At this time, the adaptive primary air control optimization feedforward correction loop generates an adaptive primary air control optimization feedforward DAO output that changes to 0 at the set speed, i.e., maintaining conventional PID control. If ΔPA and ΔDPA exceed the set range, i.e., ΔPA < -0.08 kPa or ΔPA > 0.08 kPa or ΔDPA < -0.1 kPa / min or ΔDPA > 0.1 kPa / min, the primary air pressure or primary air pressure change rate is considered to not meet the current operating condition requirement. At this time, the adaptive primary air control optimization feedforward correction loop generates an adaptive primary air control optimization feedforward DAO, which quickly activates the primary air turbine blade command through the optimized feedforward DAO to restore the primary air pressure stability.
[0019] The present invention has at least the following beneficial technical effects:
[0020] This invention provides a system and method for intermittent dynamic adaptive primary air control. The system employs an intermittent dynamic adaptive primary air control feedforward correction loop for primary air pressure control. The system automatically determines whether the primary air pressure meets the current operating requirements. If the system determines that the primary air pressure does not meet the current operating requirements, the internal adaptive primary air control feedforward correction loop generates adaptive primary air control optimization feedforward. By optimizing the feedforward and rapidly actuating the primary air turbine blade commands, the primary air pressure is restored to stability. This enables the primary air pressure to quickly stabilize near the set value (within ±0.1 kPa) during disturbances such as fuel changes, pulverizer start-up and shutdown, and primary air hot / cold damper opening and closing. It effectively avoids the overshoot phenomenon often seen in conventional PID control, ensuring the safety of boiler combustion. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the present invention.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1 is an adjustable primary air fan, 2 is a coal feeder, 3 is a coal mill, 4 is an air preheater, 5 is a boiler furnace, 6 is a cold primary air damper for the coal mill, 7 is a hot primary air damper for the coal mill, 8 is a fuel coal flow meter, 9 is a hot primary air pressure gauge, and 10 is a dynamic adaptive optimization control module for primary air pressure.
[0024] Figure 2 This is a control principle diagram of a method that uses intermittent dynamic adaptive primary air control.
[0025] Figure 3 Schematic diagram of the optimized feedforward correction loop control principle for intermittent dynamic adaptive primary air control. Detailed Implementation
[0026] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0027] like Figure 1As shown, this invention provides a system employing intermittent dynamic adaptive primary air control. An adjustable-blade primary air fan 1 generates cold primary air. Part of the cold primary air is heated to hot primary air after passing through an air preheater 4. Another portion of the cold primary air enters the coal mill 3 through a cold primary air damper 6. The hot primary air enters the coal mill 3 through a hot primary air damper 7. A coal feeder 2 delivers fuel coal into the coal mill 3. The fuel coal is crushed into pulverized coal in the coal mill 3. After the cold and hot primary air are mixed in the coal mill, the pulverized coal is transported to the boiler furnace 5 for combustion.
[0028] The system also includes a fuel coal flow meter 8, a hot primary air pressure meter 9, and a primary air pressure dynamic adaptive optimization control module 10.
[0029] The fuel coal flow meter 8 measures the amount of fuel (FF) entering the boiler (t / h), and the hot primary air pressure meter 9 measures the hot primary air pressure (PA) (kPa). The primary air pressure dynamic adaptive optimization control module 10 generates primary air blade control commands (AO) (%). The outputs of the fuel coal flow meter 8 and the hot primary air pressure meter 9 are connected to the input of the primary air pressure dynamic adaptive optimization control module 10. The output of the primary air pressure dynamic adaptive optimization control module 10 is connected to the input of the adjustable-blade primary air fan 1 to control the primary air blades.
[0030] The primary air pressure PA measured by the primary air pressure gauge 9 and the fuel quantity FF entering the boiler measured by the fuel coal flow meter 8 are connected to the primary air pressure dynamic adaptive optimization control module 10. The primary air pressure dynamic adaptive optimization control module 10 outputs command AO to control the opening of the primary air impeller, maintain the stability of the primary air pressure PA and meet the primary air pressure requirements of the current fuel quantity FF entering the boiler.
[0031] A system employing intermittent dynamic adaptive primary air control is characterized by obtaining a primary air pressure target value reference value PAS0 controlled by a dynamic adaptive optimization control module 10 based on the fuel quantity FF entering the boiler measured by the fuel coal flow meter 8. The operator can correct PAsp0 within a set range, such as within the range of -0.3 to +0.3 kPa, to obtain the primary air pressure target value PAsp controlled by the dynamic adaptive optimization control module 10. The actual rate of change of the hot primary air pressure PA is calculated based on the hot primary air pressure PA measured by the hot primary air pressure meter 9. The difference between the pressure target value PAsp and the hot primary air pressure PA is obtained by comparing PAsp and PAsp, where ΔPA = PA - PAsp. The pressure change rate target value DPAS has a fixed functional relationship with ΔPA, and the pressure change rate target value DPAS is obtained based on ΔPA. The difference between the actual pressure change rate DPA and the pressure change rate target value DPAS is obtained by comparing DPAS and DPA, where ΔDPA = DPA - DPAS.
[0032] The primary air pressure dynamic adaptive optimization control module 10 includes an intermittent dynamic adaptive primary air control optimization feedforward correction loop. The intermittent dynamic adaptive primary air control optimization feedforward correction loop generates control command feedforward DAO based on the ΔPA and ΔDPA signals generated by the system.
[0033] Furthermore, the difference between the primary air pressure PA and the target pressure value PAsp, ΔPA, and the difference between the actual pressure change rate DPA and the target pressure change rate DPAS, ΔDPA, are used to determine whether the primary air pressure meets the requirements of the current operating conditions. Specifically, if both ΔPA and ΔDPA are within the set range, such as ΔPA being between -0.08 and 0.08 kPa and ΔDPA being between -0.1 and 0.1 kPa / min, the primary air pressure is considered to meet the set value requirements, and the actual primary air pressure change rate also meets the requirements. At this time, the adaptive primary air control optimization feedforward DAO output generated by the adaptive primary air control optimization feedforward correction loop changes to 0 at a certain speed, i.e., maintaining conventional PID control. If ΔPA and ΔDPA exceed the set range, such as ΔPA < -0.08 kPa or ΔPA > 0.08 kPa or ΔDPA < -0.1 kPa / min or ΔDPA > 0.1 kPa / min, the primary air pressure or primary air pressure change rate is considered to not meet the current operating condition requirements. At this time, the adaptive primary air control optimization feedforward correction loop generates an adaptive primary air control optimization feedforward DAO, which quickly activates the primary air turbine blade command through the optimized feedforward DAO to restore the stability of the primary air pressure.
[0034] A method employing intermittent dynamic adaptive primary air control is illustrated in the control principle diagram below. Figure 2 As shown:
[0035] Figure 2 F3(X, Y) is the feedforward correction loop for intermittent dynamic adaptive primary air control optimization, and its control principle diagram is as follows: Figure 3 As shown:
[0036] A method employing intermittent dynamic adaptive primary air control is as follows:
[0037] 1. The primary air pressure setting reference value PAS0 (unit: °C) is obtained from the fuel quantity FF (unit: t / h) entering the boiler measured by fuel coal flow meter 8. That is, the primary air pressure setting reference value PAS0 is a function of the fuel quantity FF entering the boiler, PAS0 = F1(FF). The typical functional relationship between PAS0 and Ps is shown in the table below.
[0038] Table 1
[0039] FF(t / h) PAS0(kPa) 0 6.6 210 6.6 320 8.3
[0040] 2. The primary air pressure setting reference value PAS0 is the reference value for the hot primary air pressure setpoint controlled by the primary air pressure dynamic adaptive optimization control module 10. The operator can correct PAS0 within the setting range, such as within the range of -0.3 to +0.3 kPa, to obtain the primary air pressure setpoint value PAsp controlled by the primary air pressure dynamic adaptive optimization control module 10, in °C.
[0041] 3. Based on the primary air pressure PA measured by gauge 9, calculate the actual rate of change of primary air pressure DPA, in kPa / min.
[0042] 4. The target value of the primary air pressure change rate, DPAS, is derived from the pressure difference ΔPA (ΔPA = PA - PAsp) between the primary air pressure PA and the setpoint PAsp of the primary air pressure (in kPa / min). That is, the target value of the primary air pressure change rate, DPAS, is a function of the pressure difference ΔPA, DPAS = F²(ΔPA). A typical functional relationship between the target value of the primary air pressure change rate, DPAS, and ΔPA is shown in the table below.
[0043] Table 2
[0044] △PA (kPa) DPAS (kPa / min) <-1 5 -1~-0.05 -5*△PA -0.05~0.05 0 0.05~1 -5*△PA >1 -5
[0045] That is, the larger the difference ΔPA between the primary air pressure PA and the set value PAsp, the smaller the target value DPAS of the primary air pressure change rate; the smaller ΔPA, the larger the target value DPAS of the primary air pressure change rate, and the target value DPAS of the primary air pressure change rate is in the range of -5 to 5 kPa / min.
[0046] 5. Based on the actual pressure change rate DPA and the target pressure change rate DPAS, obtain the difference ΔDPA between the actual pressure change rate DPA and the target pressure change rate DPAS (ΔDPA = DPA - DPAS).
[0047] 6. An intermittent dynamic adaptive primary air control optimization feedforward correction loop generates a control feedforward command (DAO). Based on the difference ΔPA between the hot primary air pressure PA and the target pressure value PAsp, and the difference ΔDPA between the actual pressure change rate DPA and the target pressure change rate DPAS, it is determined whether the primary air pressure meets the current operating conditions. If both ΔPA and ΔDPA are within the set range, such as ΔPA in the range of -0.08 to 0.08 kPa and ΔDPA in the range of -0.1 to 0.1 kPa / min, the primary air pressure is considered to meet the set value requirements, and the actual primary air pressure change rate also meets the requirements. At this time, the adaptive primary air control optimization feedforward DAO output generated by the adaptive primary air control optimization feedforward correction loop... Figure 3 When the speed of F4(X) changes to 0, it maintains conventional PID control. F4(X) is a function of the current optimized feedforward value. Typical functional relationships are shown in the table below.
[0048] Table 3
[0049] DAO (%) <![CDATA[F4(X)(% / s)]]> <-0.5 0.1 <0 and> -0.5 DAO×(-0.2) 0 0 >0 and <0.5 DAO×(-0.2) >0.5 -0.1
[0050] 7. An intermittent dynamic adaptive primary air control optimization feedforward correction loop generates a control feedforward command (DAO). Based on the difference between the hot primary air pressure PA and the target pressure value PAsp (ΔPA), and the difference between the actual pressure change rate DPA and the target pressure change rate DPAS (ΔDPA), it is determined whether the primary air pressure meets the current operating conditions. If ΔPA or ΔDPA exceeds the set range (e.g., ΔPA < -0.08 kPa or ΔPA > 0.08 kPa or ΔDPA < -0.1 kPa / min or ΔDPA > 0.1 kPa / min), the primary air pressure or primary air pressure change rate is considered not to meet the current operating conditions. In this case, the adaptive primary air control optimization feedforward correction loop generates an adaptive primary air control optimization feedforward DAO. Figure 3 The speed of F4(X) increases or decreases, limiting the output of DAO to between -5% and 5%. F5(X) is a function of the difference ΔDPA between the actual pressure change rate DPA and the target pressure change rate DPAS. A typical functional relationship is shown in the table below.
[0051] Table 4
[0052] △DPA <![CDATA[F5(X)(% / s)]]> <-1 0.6 -0.02~1 △DPA×(-0.6) -0.01~0.01 0 0.02~1 △DPA×(-0.6) >1 -0.6
[0053] 8. Based on the table above, when ΔDPA is between -0.02 and 0.02, the F5(X) output is 0, meaning the adaptive primary air control optimization feedforward DAO maintains its current value. When ΔDPA < -0.02, the adaptive primary air control optimization feedforward DAO increases at a rate of F5(X) (% / min) (maximum speed 0.6% / s), and the primary air turbine blade opening command increases accordingly. When ΔDPA > 0.02, the adaptive primary air control optimization feedforward DAO decreases at a rate of F5(X) (% / min) (maximum speed 0.6% / s), and the primary air turbine blade opening command decreases accordingly.
[0054] This invention provides a system employing intermittent dynamic adaptive primary air pressure control. Specifically, it is a primary air pressure control system using an intermittent dynamic adaptive primary air control optimization feedforward correction loop. The system automatically determines whether the primary air pressure meets the current operating requirements based on the difference ΔPA between the hot primary air pressure PA and the target pressure value PAsp, and the difference ΔDPA between the actual pressure change rate DPA and the target pressure change rate DPAS. If the system determines that the primary air pressure does not meet the current operating requirements, the adaptive primary air control optimization feedforward correction loop generates an adaptive primary air control optimization feedforward DAO. By optimizing the feedforward DAO, the primary air turbine blade commands are quickly activated, restoring primary air pressure stability. The system provided by this invention, employing intermittent dynamic adaptive primary air pressure control, can quickly stabilize the primary air pressure near the set value (within ±0.1 kPa) during disturbances such as fuel changes, pulverizer start-up and shutdown, and primary air hot and cold damper opening and closing. This effectively avoids the overshoot phenomenon often seen in conventional PID control, ensuring combustion safety.
[0055] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A method for employing intermittent dynamic adaptive gust control, the method comprising: The method is based on a system using intermittent dynamic adaptive primary air control, which comprises a variable blade primary air fan (1), a coal feeder (2), a coal mill (3), an air preheater (4), a fuel coal flow meter (8), a hot primary air pressure gauge (9), and a primary air pressure dynamic adaptive optimization control module (10). The variable blade primary air fan (1) generates cold primary air, part of which is heated into hot primary air after passing through the air preheater (4), and the other part of the cold primary air and the hot primary air enter the coal mill (3). At the same time, the coal feeder (2) sends fuel coal into the coal mill (3), and the fuel coal is crushed into coal powder in the coal mill (3). The cold and hot primary air mixes in the coal mill and then delivers the coal powder into the boiler furnace (5) for combustion. The output ends of the fuel coal flow meter (8) and the hot primary air pressure gauge (9) are connected to the input end of the primary air pressure dynamic adaptive optimization control module (10), and the output end of the primary air pressure dynamic adaptive optimization control module (10) is connected to the input end of the variable blade primary air fan (1) for controlling the primary air fan blades. The method comprises the following steps: According to the fuel amount FF entering the boiler measured by the fuel coal flow meter (8), the pressure target value reference value PAs0 controlled by the primary air pressure dynamic adaptive optimization control module (10) is obtained, and the operator corrects PAsp0 within the set range, the set range is -0.3~+0.3kPa, and the corrected primary air pressure target value PAsp controlled by the primary air pressure dynamic adaptive optimization control module (10) is obtained. According to the hot primary air pressure PA measured by the hot primary air pressure gauge (9), the actual change rate DPA of the calculated hot primary air pressure PA is obtained, the pressure target value PAsp and the hot primary air pressure PA are compared, the difference△PA between the hot primary air pressure PA and the pressure target value PAsp is obtained,△PA=PA-PAsP; the pressure change rate target value DPAS and△PA are a fixed function relationship, the pressure change rate target value DPAS is obtained according to△PA, the actual change rate DPA and the pressure change rate target value DPAS are compared, and the difference△DPA between the actual pressure change rate DPA and the pressure change rate target value DPAS is obtained,△DPA=DPA-DPAS; The primary air pressure dynamic adaptive optimization control module (10) comprises an intermittent dynamic adaptive primary air control optimization feedforward correction loop, which generates an adaptive primary air control optimization feedforward correction loop control instruction feedforward DAO according to the△PA and△DPA signals generated by the system; According to the difference△PA between the hot primary air pressure PA and the pressure target value PAsp, and the difference△DPA between the actual pressure change rate DPA and the pressure change rate target value DPAS, it is judged whether the primary air pressure meets the current working condition requirement. Specifically, if △PA and △DPA are within the set range, i.e. △PA is between -0.08 and 0.08 kPa, and △DPA is between -0.1 and 0.1 kPa / min, it is considered that the primary air pressure meets the set value requirement, and the actual primary air pressure change rate also meets the requirement. At this time, the adaptive primary air control optimization feedforward correction loop generates an adaptive primary air control optimization feedforward DAO output with a set speed change to 0, i.e. maintaining regular PID control. If △PA and △DPA exceed the set range, i.e. △PA is less than -0.08 kPa or greater than 0.08 kPa, or △DPA is less than -0.1 kPa / min or greater than 0.1 kPa / min, it is considered that the primary air pressure or the primary air pressure change rate does not meet the current operating condition requirement. At this time, the adaptive primary air control optimization feedforward correction loop generates an adaptive primary air control optimization feedforward DAO, which quickly operates the primary air fan blade command through the optimization feedforward DAO to restore the primary air pressure stability.
2. The method of claim 1 employing intermittent dynamic adaptive gust control, wherein, Another part of the cold primary air passes through the coal mill cold primary air door (6) into the coal mill (3).
3. The method of claim 1, wherein the method is characterized by, The hot primary air passes through the coal mill hot primary air door (7) into the coal mill (3).
4. The method of claim 1 employing intermittent dynamic adaptive gust control, wherein, The fuel coal flow meter (8) is used to measure the fuel quantity FF entering the boiler, with units of t / h.
5. The method of claim 1 employing intermittent dynamic adaptive gust control, wherein, The hot primary air pressure gauge (9) is used to measure the hot primary air pressure PA, with units of kPa.
6. The method of claim 1 employing intermittent dynamic adaptive gust control, wherein The primary air pressure dynamic adaptive optimization control module (10) is used to generate the primary air fan blade control command AO, with units of %.
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