CN107906499A - Fired power generating unit intelligence control system - Google Patents

Fired power generating unit intelligence control system Download PDF

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Publication number
CN107906499A
CN107906499A CN201710929988.3A CN201710929988A CN107906499A CN 107906499 A CN107906499 A CN 107906499A CN 201710929988 A CN201710929988 A CN 201710929988A CN 107906499 A CN107906499 A CN 107906499A
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unit
selector
bias
load
output
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CN107906499B (en
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李吉宁
姜剑波
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/04—Regulating fuel supply conjointly with air supply and with draught
    • F23N1/042—Regulating fuel supply conjointly with air supply and with draught using electronic means

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Feedback Control In General (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

The present invention relates to power equipment field of intelligent control, and provide a kind of fired power generating unit intelligence control system, it is intended to solve how to control the technical problem of fired power generating unit fast and stable tracking AGC responses.For this purpose, fuel feedforward control module can adjust fuel control amount of bias according to load condition in the control system of the present invention, and fuel control targe value is corrected according to the fuel control amount of bias after adjustment.Primary air fan control module can adjust primary air fan aperture amount of bias according to fuel quantity state.Pressure fan control module can adjust pressure fan aperture amount of bias according to fuel quantity state.Super-heated steam temperature control module can adjust Desuperheating water regulating valve aperture according to the temperature information of fired power generating unit.Fuel feedforward control module, primary air fan control module, pressure fan control module and the effect of super-heated steam temperature control module cooperative in technical scheme, the burning inertia of fired power generating unit can be overcome, quickly add, load shedding, and effectively control load changing rate and prevent load toning.

Description

Fired power generating unit intelligence control system
Technical field
The present invention relates to power equipment field of intelligent control, and in particular to a kind of fired power generating unit intelligence control system.
Background technology
The control system of fired power generating unit is mainly Distributed Control System (Distributed Control System, DCS), And since the control logic of current DCS system is there are following defects, cause its tracking velocity to AGC responses not sensitive enough：
1st, control logic is poor to the adaptability of external environment condition, once occur that power equipment is degrading or operator behaviour Make improperly situation, it will cause the control performance of DCS system to deteriorate.
2nd, the modification of control logic needs to carry out under power equipment shutdown status.
3rd, the modification of control logic is difficult to have the requirement of power equipment operator and thermal technology personnel concurrently.
4th, after power equipment aging or transformation, the adaptability of control logic and automation reduce, and cause power equipment to operate The labor intensity increase of member.
5th, after increasing new control targe, control logic is unable to the new work condition environment of adaptability, and then adds electric power and set The labor intensity of standby operator.Intervene can just adjust manually for example, wall temperature overtemperature can only rely on operator, once intervene not Wall temperature overtemperature can frequently occur in time, influence the safety of fired power generating unit.
The content of the invention
It has been to solve how to control fired power generating unit fast and stable to track to solve the above problem of the prior art AGC is responded, and the present invention provides a kind of fired power generating unit intelligence control system.
Fired power generating unit intelligence control system in the present invention, including fuel feedforward control module, it is configured to according to load shape State adjustment fuel control amount of bias, and correct fuel control targe value according to the fuel control amount of bias after the adjustment；
The fuel feedforward control module includes load condition quantifying unit, load changing rate unit, the first multiplier, the One clipping unit, the first speed limit unit, first constant unit and first selector；The input terminal of first multiplier respectively with The load condition quantifying unit is connected with load changing rate unit, the output terminal of first multiplier, the first clipping unit, First speed limit unit and first selector are sequentially connected；The input terminal of the first constant unit and the first selector connects Connect；
First clipping unit, is configured to the first multiplier output valve being limited to default first number range It is interior；The first speed limit unit, is configured to the change rate of the first clipping unit output valve being limited to default second value In the range of；
The first selector, is configured to when the output valve for selected during fuel feedforward control the first speed limit unit Amount of bias is controlled as fuel, the output valve of the first constant unit is selected when being controlled without fuel feedforward as fuel Control amount of bias.
Further, an optimal technical scheme provided by the invention is：
The system also includes primary air fan control module, it is configured to according to fuel quantity state adjustment primary air fan aperture Amount of bias；The primary air fan control module includes primary air fan intelligence aperture amount of bias control unit, second selector, the 3rd Selector, the 4th selector, the second clipping unit, the 3rd clipping unit, the second speed limit unit, second adder and second constant Unit；
The input terminal of the second selector respectively with the primary air fan intelligence aperture amount of bias control unit and second Constant unit connects；The output terminal of the second selector, the second clipping unit, the second speed limit unit, second adder, the 3rd Selector and the 3rd clipping unit are sequentially connected；The output terminal of 4th selector and the input Dan Lian of the second adder Connect.
Further, an optimal technical scheme provided by the invention is：
The system also includes pressure fan control module, it is configured to according to the adjustment pressure fan aperture biasing of fuel quantity state Amount；The pressure fan control module include pressure fan intelligence aperture amount of bias control unit, the 5th selector, the 6th selector, 7th selector, the 4th clipping unit, the 5th clipping unit, the 3rd speed limit unit, the 3rd adder and three constant unit；
The input terminal of 5th selector is normal with the pressure fan intelligence aperture amount of bias control unit and the 3rd respectively Counting unit connects；The output terminal of 5th selector, the 4th clipping unit, the 3rd speed limit unit, the 3rd adder, the 6th choosing Select device and the 5th clipping unit is sequentially connected；The output terminal of 7th selector and the input Dan Lian of the 3rd adder Connect.
Further, an optimal technical scheme provided by the invention is：
The system also includes super-heated steam temperature control module, it is configured to the temperature information adjustment desuperheat according to fired power generating unit Water regulating valve aperture；The super-heated steam temperature control module includes Desuperheating water regulating valve intelligence aperture amount of bias control unit, the 8th Selector, the 9th selector, the tenth selector, the 6th clipping unit, the 7th clipping unit, the 4th speed limit unit, the 4th addition Device and the 4th constant unit；
The input terminal of 8th selector respectively with the Desuperheating water regulating valve intelligence aperture amount of bias control unit and 4th constant unit connects；The output terminal of 8th selector, the 6th clipping unit, the 4th speed limit unit, the 4th adder, 9th selector and the 7th clipping unit are sequentially connected；The output terminal of tenth selector and the input of the 4th adder Single connection.
Compared with the immediate prior art, above-mentioned technical proposal at least has the advantages that：
1st, the fuel feedforward control module in the present invention can adjust fuel control amount of bias according to load condition, meanwhile, Load condition is divided into the load stage for covering a variety of thermal power unit operation operating modes so that fuel feedforward control module can be accurate Fuel control amount of bias really is adjusted, and then obtains accurate fuel control targe value.
2nd, the primary air fan control module in the present invention is according to fuel quantity state adjustment primary air fan aperture amount of bias, can be with Overcome the inertia of pulverized coal preparation system, improve the response speed that primary air fan meets fired power generating unit Load Regulation.
3rd, the pressure fan control module in the present invention can overcome according to fuel quantity state adjustment pressure fan aperture amount of bias The inertia of pulverized coal preparation system, raising fired power generating unit air quantity meet the response speed needed for its Load Regulation.
4th, the super-heated steam temperature control module in the present invention can adjust desuperheating water according to the temperature information of fired power generating unit and adjust Valve opening, reduces the action frequency of Desuperheating water regulating valve executing agency, and then adds Desuperheating water regulating valve executing agency Service life, and reduce system cost.
5th, the fired power generating unit temperature information in the present invention includes outlet temperature, inlet temperature and the wall temperature of superheater, and The inlet temperature of attemperator, therefore can be controlled automatically when overtemperature occurs for superheater wall temperature based on above-mentioned super-heated steam temperature control module Desuperheating water regulating valve action processed, alleviates the operating burden of thermal power unit operation personnel.
Brief description of the drawings
Fig. 1 is the structure diagram of fired power generating unit intelligence control system in the present embodiment；
Fig. 2 is fired power generating unit intelligence control system application schematic diagram in the embodiment of the present invention；
Fig. 3 is the corresponding control logic schematic diagram of first kind load stage in the present embodiment；
Fig. 4 is the corresponding control logic schematic diagram of Second Type load stage in the present embodiment；
Fig. 5 is the first control logic schematic diagram for quantifying subelement in the present embodiment；
Fig. 6 is the second control logic schematic diagram for quantifying subelement in the present embodiment；
Fig. 7 is the 3rd control logic schematic diagram for quantifying subelement in the present embodiment；
Fig. 8 is fuel intelligent control logical schematic in the embodiment of the present invention；
Fig. 9 is primary air fan intelligent control logical schematic in the embodiment of the present invention；
Figure 10 is pressure fan intelligent control logical schematic in the embodiment of the present invention；
Figure 11 is overheat temperature intelligent control logical schematic in the embodiment of the present invention；
Figure 12 is load up curve synoptic diagram when not using intelligence control system in the embodiment of the present invention；
Figure 13 is load up curve synoptic diagram when intelligence control system is used in the embodiment of the present invention；
Figure 14 is not using the action signal of regulating-valve actuator during overheat temperature intelligent control in the embodiment of the present invention Figure；
Figure 15 is using the action schematic diagram of regulating-valve actuator during overheat temperature intelligent control in the embodiment of the present invention.
Embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this A little embodiments are used only for explaining the technical principle of the present invention, it is not intended that limit the scope of the invention.
Refering to attached drawing 1, Fig. 1 illustrates the structure chart of fired power generating unit intelligence control system in the present embodiment.Such as Fig. 1 Shown, fired power generating unit intelligence control system can include fuel feedforward control module 11, primary air fan control mould in the present embodiment Block 12, pressure fan control module 13 and super-heated steam temperature control module 14.Wherein, fuel feedforward control module 11 is configured to according to negative Lotus state adjustment fuel control amount of bias, and correct fuel control targe value according to the fuel control amount of bias after adjustment.Once Fan control module 12 is configured to according to fuel quantity state adjustment primary air fan aperture amount of bias.Pressure fan control module 13 configures To adjust pressure fan aperture amount of bias according to fuel quantity state.Super-heated steam temperature control module 14 is configured to the temperature according to fired power generating unit Spend information adjustment Desuperheating water regulating valve aperture.
With continued reference to attached drawing 2, Fig. 2 illustrates fired power generating unit intelligence control system application scenarios in the present embodiment. As shown in Fig. 2, the fired power generating unit intelligence control system in the present embodiment shown in Fig. 1 is installed in server 21, the server 21 Communicated to connect by interface message processor (IMP) 22 and DCS servers 23, DCS servers 23 connect with engineer station 24 and operator station 25 respectively Connect.Wherein, more than 21 DCS servers 23 of server are communicated using modbus agreements.
3-8 below in conjunction with the accompanying drawings, illustrates the fuel feedforward control module 11 in the present embodiment.
Fuel feedforward control module 11 can be to adjust fuel according to load condition to control amount of bias in the present embodiment, therefore Load condition is divided into the load stage for covering a variety of thermal power unit operation operating modes so that fuel feedforward control module 11 can be with Fuel control amount of bias is adjusted exactly.Load stage includes first kind load stage and Second Type load in the present embodiment Stage, wherein first kind load stage refer to the load stage according to the division of the deviation of actual load and target load, the Two type load stages refer to the load stage divided according to load changing rate and pressure change rate.
Specifically, it is negative mainly to include the first load stage A1, the second load stage A2 and the 3rd for first kind load stage Lotus stage A3.Wherein, the first load stage A1 is Δ L≤N1When load condition, the load condition represent the application of load stage.The Two load stage A2 are N1＜ Δ L ＜ N2When load condition, the load condition represent the load smooth change stage.3rd load Stage A3 is Δ L >=N2When load condition, the load condition represent load shedding state.Wherein, Δ L=Lr-Lg, LrFor reality Load value, LgFor target load value, N1And N2It is threshold value.The N in a preferred embodiment of the present embodiment1=-6MW, N2 =6MW.
Second Type load stage mainly include the 4th load stage B1, the 5th load stage B2, the 6th load stage B3, 7th load stage B4 and the 8th load stage B5.Wherein,
4th load stage B1 is K≤- N3When load condition, which represents that removal of load or load drastically decline Stage.5th load stage B2 is-N3＜ K ＜-N4When load condition, which represents normal load shedding stage.6th Load stage B3 is-N4≤K≤N4When load condition, which represents pressure and load plateau.7th load rank Section B4 is N4＜ K ＜ N3When load condition, which represents normal application of load stage.8th load stage B5 is K >=N3 When load condition, the load condition represent due to throttle close or boiler combustion change caused by load jump the stage. Wherein, K=kL+10×kP, kLFor load changing rate, kPFor pressure change rate, N3For threshold value and N3＞ 0, N4For threshold value and N4＞ 0. The N in a preferred embodiment of the present embodiment3=13, N4=10.
Further, first kind load stage and Second Type load stage are considered, group in 15 can also being obtained Close load stage, i.e. the combination load stage of the first load stage A1 and each Second Type load stage, the second load stage A2 With the combination load stage of each Second Type load stage, the combination of the 3rd load stage A3 and each Second Type load stage are born The lotus stage.
Specifically, the combination load stage A1B1 of the first load stage A1 and the 4th load stage B1, the load stage table Show needs to increase load, coal pulverizer tripping or the abnormal heat service of boiler caused by other reasons suddenly suddenly during load shedding The state that play declines.In a preferred embodiment of the present embodiment, work as N1=-6MW, N2=6MW, N3=13 and N4=10 When, the control coefrficient of amount of bias can be controlled to be arranged to 1.25 fuel.
The combination load stage A1B2 of first load stage A1 and the 5th load stage B2, the load stage represent application of load During to meet state that load up rate requirement causes load and pressure to decline, such as start coal pulverizer or application of load process Thermic load energy is insufficient and produces load decline.The load stage also may indicate that the state of serious toning during load shedding. In a preferred embodiment of the present embodiment, work as N1=-6MW, N2=6MW, N3=13 and N4, can be by fuel when=10 The control coefrficient of control amount of bias is arranged to 0.65.
The combination load stage A1B3 of first load stage A1 and the 6th load stage B3, the load stage represent application of load During feed-forward regulation state, or toning state during load shedding.In a preferred embodiment of the present embodiment, work as N1 =-6MW, N2=6MW, N3=13 and N4When=10, the control coefrficient of amount of bias can be controlled to be arranged to 0.5 fuel.
The combination load stage A1B4 of first load stage A1 and the 7th load stage B4, the load stage represent application of load During need to reduce the state of feedforward value, such as control disturbance, receive coal or readjustment.The load stage also may indicate that application of load mistake When quantity of steam increase or throttle cross out caused load increase caused by spray water flux increase in journey, it is desirable to reduce disturbance quantity State.In a preferred embodiment of the present embodiment, work as N1=-6MW, N2=6MW, N3=13 and N4, can be with when=10 The control coefrficient of fuel control amount of bias is arranged to 0.375.
The combination load stage A1B5 of first load stage A1 and the 8th load stage B5, the load stage represent application of load Latter stage in order to prevent toning reduce disturbance quantity state.Meanwhile the load stage also may indicate that and start coal pulverizer or fuel quantity When excessively causing steam temperature, vapour pressure rising too fast, continue to adjust back coal-supplying amount, the state of control disturbance amount.At one of the present embodiment In preferred embodiment, work as N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel can be controlled to the control of amount of bias Coefficient is arranged to 0.15.
Combination load stage A2B1, A2B2, A2B3, A2B4 of second load stage A2 and each Second Type load stage and A2B5, can represent application of load or load shedding latter stage, and all dynamic increments are pulled back to 0, reduce disturbance quantity, keep unit to bear The stable state of lotus, can also represent application of load or load shedding toning, make reversely to adjust state when preparing, also may indicate that negative Under lotus temperature conditions, adjusted without intervening, keep stable state.In a preferred embodiment of the present embodiment, when N1=-6MW, N2=6MW, N3=13 and N4When=10, the control coefrficient of amount of bias can be controlled to be arranged to 0 fuel.
The combination load stage A3B1 of 3rd load stage A3 and the 4th load stage B1, the load stage represent load shedding During removal of load, pulverized coal preparation system tripping or the state that drastically declines of boiler heat load caused by other reasons.In the present embodiment A preferred embodiment in, work as N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel can be controlled amount of bias Control coefrficient be arranged to 1.0.
The combination load stage A3B2 of 3rd load stage A3 and the 5th load stage B2, the load stage represent load shedding State that is very fast or getting rid of steam temperature, also may indicate that the state of coal and wind over-subtraction.In a preferred embodiment of the present embodiment, Work as N1=-6MW, N2=6MW, N3=13 and N4When=10, the control coefrficient of amount of bias can be controlled to be arranged to 0.5 fuel.
The combination load stage A3B3 of 3rd load stage A3 and the 6th load stage B3, the load stage represent normally to subtract Load process feed-forward regulation state, can also represent application of load process toning state.In the side of being preferable to carry out of the present embodiment In case, work as N1=-6MW, N2=6MW, N3=13 and N4When=10, the control coefrficient of fuel control amount of bias can be arranged to- 0.5。
The combination load stage A3B4 of 3rd load stage A3 and the 7th load stage B4, the load stage represent load shedding During overcome pulverized coal preparation system demodulate state, as coal-supplying amount reduce, grinding roller up-regulation causes the unnecessary air quantity of coal pulverizer unexpected by wind Take out of, the state for causing powder amount to jump in short-term, can also represent the serious toning state of application of load process.At one of the present embodiment In preferred embodiment, work as N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel can be controlled to the control of amount of bias Coefficient is arranged to -0.75.
The combination load stage A3B5 of 3rd load stage A3 and the 8th load stage B5, the load stage represent load shedding Process load jumps or boiler heat load jumps, and being opened up suddenly after being blocked such as tube cell causes powder amount to jump.Load stage A3B5 It can represent to suddenly encounter load shedding instruction during application of load.In a preferred embodiment of the present embodiment, work as N1=- 6MW、N2=6MW, N3=13 and N4When=10, the control coefrficient of amount of bias can be controlled to be arranged to -1 fuel.
Refering to attached drawing 8, Fig. 8 illustrates the control logic of fuel feedforward control module 11 in the present embodiment.Such as Fig. 8 It is shown, in the present embodiment fuel feedforward control module 11 can include load condition quantifying unit, load changing rate unit M60, First multiplier M62, the first clipping unit M63, first constant unit M66, the first speed limit unit M65 and first selector M68. The input terminal of first multiplier M62 is connected with load condition quantifying unit and load changing rate list M61 members respectively, the first multiplier The output terminal of M62, the first clipping unit M63, the first speed limit unit M65 and first selector M68 are sequentially connected.First constant list First M66 is connected with the input terminal of first selector M68.
Specifically, load condition quantifying unit includes first and quantifies subelement, second quantifies subelement, the in the present embodiment Three quantify subelement, first adder M58, the second multiplier M60 and constant subelement M59.The input terminal of first adder M58 It is connected respectively with the first quantization subelement, the second quantization subelement and the 3rd quantization subelement；The input terminal of second multiplier M60 It is connected respectively with the output terminal and constant subelement of first adder M58, the output terminal and the first multiplier of the second multiplier M60 The input terminal connection of M62.Wherein, the first quantization subelement is configurable to work as Δ L≤N1When load condition is quantified, Two quantization subelements are configurable to work as N1＜ Δ L ＜ N2When load condition is quantified, the 3rd quantization subelement can configure For as Δ L >=N2When load condition is quantified.
First clipping unit M63 is configurable to the first multiplier M62 output valves being limited to default first number range It is interior.For example, when default first number range is [- 70,70], 70 are exported if the first multiplier M62 output valves are more than 70, if First multiplier M62 output valves are less than -70 outputs -70, if the first multiplier M62 output valves are between [- 70,70], Then export the real output value of the first multiplier M62.
First speed limit unit M65 is configurable to the change rate of the first clipping unit M63 output valves being limited to default In two number ranges.Specifically, the change rate when the input increase of the first speed limit unit M65 is less than default upper limit value then the The output valve change rate of one speed limit unit M65 is the actual rate of change of input value, when the input of the first speed limit unit M65 reduces Change rate be more than default lower limit then the first speed limit unit M65 output valve change rate be input value actual rate of change.
First selector M68 is configured to when the output valve for selected during fuel feedforward control the first speed limit unit M65 is made Amount of bias is controlled for fuel, the output valve of first constant unit M66 is selected when being controlled without fuel feedforward as fuel control Amount of bias processed.
Specifically, when fuel feedforward control fling-cut switch M67 to first selector M68 export digital quantity 1 when show into Row fuel feedforward controls, and first selector M68 selects the output valve of the first speed limit unit M65 to be exported as it as a result, i.e. at this time Whole fuel controls amount of bias.
Before showing to carry out fuel when the fling-cut switch M67 of fuel feedforward control exports digital quantity 0 to first selector M68 Feedback controls, and first selector M68 selects the output valve of first constant unit M66 to be exported as it as a result, and the present embodiment at this time The middle first constant unit M66 output valves that set is 0, therefore it is 0 that whole fuel, which controls amount of bias,.
Further, in a preferred embodiment of the present embodiment, it is negative that load condition quantifying unit further includes first Lotus stage judgment sub-unit, the second load stage judgment sub-unit, the 3rd load stage judgment sub-unit, the 4th load stage are sentenced Disconnected subelement, the 5th load stage judgment sub-unit, the 6th load stage judgment sub-unit, the 7th load stage judgment sub-unit With the 8th load stage judgment sub-unit.
Specifically, the first load stage judgment sub-unit is configurable to judge whether load condition is in the first load rank Section, if then exporting digital quantity 1, if otherwise exporting digital quantity 0.Second load stage judgment sub-unit is configurable to judge negative Whether lotus state is in the second load stage, if then exporting digital quantity 1, if otherwise exporting digital quantity 0.3rd load stage is sentenced Disconnected subelement is configurable to judge whether load condition is in the 3rd load stage, if digital quantity 1 is then exported, if otherwise defeated Go out digital quantity 0.Wherein, the first load stage is Δ L≤N1When load condition, the second load stage is N1＜ Δ L ＜ N2When Load condition, the 3rd load stage are Δ L >=N2When load condition.
Refering to attached drawing 3, Fig. 3 illustrates the control logic of first kind load stage in the present embodiment.Such as Fig. 3 institutes Show, the control logic of first kind load stage includes actual load unit M1, target load unit M2, addition in the present embodiment Device M3, high/low comparator M4, high/low comparator M6, high/low comparator M10, OR gate M7, NOT gate M8 and the first load stage are sentenced Disconnected output unit M5, the second load stage judge that output unit M9 and the 3rd load stage judge output unit M11.
The output of high/low comparator includes upper and lower two output layers in the present embodiment, and upper output layer exports for high limit, under Output layer exports for lower bound.Specifically, the upper output layer output digital quantity 1 when the input of high/low comparator is extremely more than upper limit value, Lower output layer exports digital quantity 0.When input to upper output layer when being less than lower limit of high/low comparator exports digital quantity 0, under it is defeated Go out layer output digital quantity 1.When the input of high/low comparator is to when being between lower limit and upper limit value, upper output layer is defeated with Go out layer and export digital quantity 0.In a preferred embodiment of the present embodiment, work as N1=-6MW, N2During=6MW, if Δ L≤ 6MW then high/low comparator M4 lower output layer output digital quantity 1, i.e. the first load stage judgment sub-unit M5 judgement bear at this time Lotus state is in the first load stage；The lower output layer of high/low comparator M6 and upper output layer are equal if -6MW ＜ Δ L ＜ 6MW Digital quantity 0 is exported, i.e. the second load stage judgment sub-unit M9 judges that load condition is in the second load stage at this time；If Δ L The upper output layer output digital quantity 1 of >=6MW then high/low comparator M10, i.e. the 3rd load stage judgment sub-unit M11 judges this When load condition be in the 3rd load stage.
With continued reference to attached drawing 4, Fig. 4 illustrates the control logic of Second Type load stage in the present embodiment.Such as Shown in Fig. 4, the control logic of Second Type load stage includes actual load unit M1, main vapour pressure unit in the present embodiment M12, delay unit M13, delay unit M14, adder M15, adder M16, adder M17, high/low comparator M18, height/ Low comparator M20, high/low comparator M24, high/low comparator M28, high/low comparator M32, OR gate M21, OR gate M25, OR gate M29, NOT gate M22, NOT gate M26, NOT gate M29, the 4th load stage judgment sub-unit M18, the 5th load stage judgment sub-unit M23, the 6th load stage judgment sub-unit M27, the 7th load stage judgment sub-unit M31 and the 8th load stage judge that son is single First M33.
The delay time of delay unit M13 can be 60s in the present embodiment, its output valve is the actual negative after 60s Lotus, the output valve of adder M15 for actual load unit M1 and delay unit M13 output result difference, i.e., actual load and The difference of actual load after 60s, the difference can represent load changing rate.
The delay time of delay unit M14 can be 60s, its output valve is the pressure after 60s, adder M16's Output valve for main vapour pressure unit M12 and delay unit M14 output result difference, i.e., after current main vapour pressure and 60s The difference of main vapour pressure, the difference can represent pressure change rate.
In a preferred embodiment of the present embodiment, work as N3=13 and N4When=10, the high/low comparison if K≤- 13 The lower output layer output digital quantity 1 of device M18, i.e. the 4th load stage judgment sub-unit M19 judge that load condition is in the at this time Formula load stage；The lower output layer of high/low comparator M20 and upper output layer export digital quantity 0 if -13 ＜ K ＜ -1, i.e., and Five load stage judgment sub-unit M23 judge that load condition is in the 5th load stage at this time；The high/low ratio if -10≤K≤10 Lower output layer and upper output layer compared with device M24 export digital quantity 0, i.e. the 6th load stage judgment sub-unit M27 judges at this time Load condition is in the 6th load stage.The lower output layer of high/low comparator M28 and upper output layer are defeated if 10 ＜ K ＜ 13 Go out digital quantity 0, i.e. the 7th load stage judgment sub-unit M31 judges that load condition is in the 7th load stage at this time.If K >=13 Then the upper output layer output digital quantity 1 of high/low comparator M32, i.e. the 8th load stage judgment sub-unit M33 judge load at this time State is in the 8th load stage.
With continued reference to attached drawing 5, Fig. 5 illustrates the structure of the first quantization subelement in the present embodiment.Such as Fig. 5 institutes Show, the combination load rank that the first quantization subelement is made of the first load stage and Second Type load stage in the present embodiment The control logic of section.Specifically, the first quantization subelement includes the first AND gate circuit M34, the second AND gate circuit in the present embodiment M35, the 3rd AND gate circuit M36, the 4th AND gate circuit M37, the 5th AND gate circuit M38, the first DSUM subelements M39, second DSUM subelements M40 and the first adder unit M41.
Specifically, the input terminal of the first AND gate circuit M34 is negative with the first load stage judgment sub-unit M5 and the 4th respectively The connection of lotus stage judgment sub-unit M19, output terminal are connected with the input terminal of the first DSUM subelements M39.First DSUM subelements The output terminal of M39 is connected with the input terminal of the first adder unit M41, output terminal and the load condition amount of the first adder unit M41 Change unit in first adder M58 (as shown in figure 8) input terminal connection.The input terminal of second AND gate circuit M35 is respectively with One load stage judgment sub-unit M5 and the 5th load stage judgment sub-unit M23 connections, output terminal and the first DSUM subelements The input terminal connection of M39.The input terminal of 3rd AND gate circuit M36 is negative with the first load stage judgment sub-unit M5 and the 6th respectively The connection of lotus stage judgment sub-unit M27, output terminal are connected with the input terminal of the first DSUM subelements M39.4th AND gate circuit M37 Input terminal be connected respectively with the first load stage judgment sub-unit M5 and the 7th load stage judgment sub-unit M31, output terminal It is connected with the input terminal of the first DSUM subelements M39.
The input terminal of 5th AND gate circuit M38 is sentenced with the first load stage judgment sub-unit M5 and the 8th load stage respectively Disconnected subelement M33 connections, output terminal are connected with the input terminal of the 2nd DSUM subelements M40, the output of the 2nd DSUM subelements M40 End is connected with the input terminal of the first adder unit M41.Wherein, the 2nd DSUM subelements M40 is the digital quantity adduction mould with increment Block.
The first DSUM subelements M39 and the 2nd DSUM subelements M40 is the digital quantity adduction with increment in the present embodiment Module.Specifically, it is assumed that in the first DSUM subelements M39 respectively with the first AND gate circuit M34, the second AND gate circuit M35, the 3rd AND gate circuit M36 and the corresponding increments of the 4th AND gate circuit M37 are S1, S2, S3 and S4, the 2nd DSUM subelements M40 and the 5th The corresponding increments of AND gate circuit M38 are S5, then when the first AND gate circuit M34, the second AND gate circuit M35, the 3rd AND gate circuit When M36, the 4th AND gate circuit M37, the output valve of the 5th AND gate circuit M38 are S6, S7, S8, S9 and S10, the first DSUM are single The output valve of first M39 is S1 × S6+S2 × S7+S3 × S8+S4 × S9, the output valve of the 2nd DSUM subelements M40 for S5 × S10。
Further, understood by foregoing in combination load stage A1B1, and N1=-6MW, N2=6MW, N3=13 and N4= When 10, the control coefrficient of fuel control amount of bias is arranged in the 1.25, therefore the first DSUM subelements M39 and the first AND gate circuit The corresponding increments of M34 are 1.25.In combination load stage A1B2 and N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel The control coefrficient of control amount of bias is arranged to corresponding with the second AND gate circuit M35 in the 0.65, therefore the first DSUM subelements M39 Increment is 0.65.In combination load stage A1B3 and N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel control biasing The control coefrficient of amount is arranged to increment corresponding with the 3rd AND gate circuit M36 in the 0.5, therefore the first DSUM subelements M39 0.5.In combination load stage A1B4 and N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel controls the control of amount of bias It is 0.375 that coefficient, which is arranged to increment corresponding with the 4th AND gate circuit M37 in the 0.375, therefore the first DSUM subelements M39,.It is comprehensive Upper described, the output valve of the first DSUM subelements M39 is 1.25 × S6+0.65 × S7+0.5 × S8+0.375 × S9.
In combination load stage A1B5 and N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel control amount of bias It is 0.15 that control coefrficient, which is arranged to increment corresponding with the 5th AND gate circuit M38 in the 0.15, therefore the 2nd DSUM subelements M40, The output valve of 2nd DSUM subelements M40 is 0.15 × S10.
With continued reference to attached drawing 6, Fig. 6 illustrates the structure of the second quantization subelement in the present embodiment.Such as Fig. 6 institutes Show, the combination load rank that the second quantization subelement is made of the second load stage and Second Type load stage in the present embodiment The control logic of section.The second quantization subelement includes the 6th AND gate circuit M42, the 7th AND gate circuit M43, the 8th in the present embodiment AND gate circuit M44, the 9th AND gate circuit M45, the tenth AND gate circuit M46, the 3rd DSUM subelements M47, the 4th DSUM subelements M48 and the second adder unit M49.
Specifically, the input terminal of the 6th AND gate circuit M42 is negative with the second load stage judgment sub-unit M9 and the 4th respectively The connection of lotus stage judgment sub-unit M19, output terminal are connected with the input terminal of the 3rd DSUM subelements M47, the 3rd DSUM subelements The output terminal of M48 is connected with the input terminal of the second adder unit M49, output terminal and the load condition amount of the second adder unit M49 Change unit in first adder M58 (as shown in figure 8) input terminal connection.The input terminal of 7th AND gate circuit M43 is respectively with Two load stage judgment sub-unit M9 and the 5th load stage judgment sub-unit M23 connections, output terminal and the 3rd DSUM subelements The input terminal connection of M47.The input terminal of 8th AND gate circuit M44 is negative with the second load stage judgment sub-unit M9 and the 6th respectively The connection of lotus stage judgment sub-unit M27, output terminal are connected with the input terminal of the 3rd DSUM subelements M47.9th AND gate circuit M45 Input terminal be connected respectively with the second load stage judgment sub-unit M9 and the 7th load stage judgment sub-unit M31, output terminal It is connected with the input terminal of the 3rd DSUM subelements M47.
The input terminal of tenth AND gate circuit M46 is sentenced with the second load stage judgment sub-unit M9 and the 8th load stage respectively Disconnected subelement M31 connections, output terminal are connected with the input terminal of the 4th DSUM subelements M48, the output of the 4th DSUM subelements M48 End is connected with the input terminal of the second adder unit M49.
The 3rd DSUM subelements M47 and the 4th DSUM subelements M48 is the digital quantity adduction with increment in the present embodiment Module.Specifically, it is assumed that in the 3rd DSUM subelements M47 respectively with the 6th AND gate circuit M42, the 7th AND gate circuit M43, the 8th AND gate circuit M44 and the corresponding increments of the 9th AND gate circuit M45 are S11, S12, S13 and S14, the 4th DSUM subelements M48 with The corresponding increments of tenth AND gate circuit M46 are S15, then when the 6th AND gate circuit M42, the 7th AND gate circuit M43, the 8th are electric with door When road M44, the 9th AND gate circuit M45, the output valve of the tenth AND gate circuit M46 are S16, S17, S18, S19 and S20, the 3rd The output valve of DSUM subelements M47 is S11 × S16+S12 × S17+S13 × S18+S14 × S19, the 4th DSUM subelements M48 Output valve be S15 × S20.
Further, understood by foregoing in combination load stage A2B1, A2B2, A2B3, A2B4 and A2B5, and N1=- 6MW、N2=6MW, N3=13 and N4When=10, the control coefrficient of fuel control amount of bias is arranged to 0, and therefore, the 3rd DSUM are single The output valve of first M47 and the 4th DSUM subelements M48 are 0.
With continued reference to attached drawing 7, Fig. 7 illustrates the structure of the 3rd quantization subelement in the present embodiment.Such as Fig. 7 institutes Show, the combination load rank that the 3rd quantization subelement is made of the 3rd load stage and Second Type load stage in the present embodiment The control logic of section.In the present embodiment the 3rd quantify subelement include the 11st AND gate circuit M50, the 12nd AND gate circuit M51, 13rd AND gate circuit M52, the 14th AND gate circuit M53, the 15th AND gate circuit M54, the 5th DSUM subelements M55, the 6th DSUM subelements M56 and the 3rd adder unit M57.
Specifically, the input terminal of the 11st AND gate circuit M50 respectively with the 3rd load stage judgment sub-unit M11 and the 4th The M19 connections of load stage judgment sub-unit, output terminal are connected with the input terminal of the 5th DSUM subelements M55, and the 5th DSUM are single The output terminal of first M55 is connected with the input terminal of the 3rd adder unit M57, the output terminal and load condition of the 3rd adder unit M57 First adder M58 in quantifying unit (as shown in figure 8) input terminal connection.The input terminal difference of 12nd AND gate circuit M51 It is connected with the 3rd load stage judgment sub-unit M11 and the 5th load stage judgment sub-unit M23, output terminal and the 5th DSUM The input terminal connection of unit M55.The input terminal of 13rd AND gate circuit M52 respectively with the 3rd load stage judgment sub-unit M11 Connected with the 6th load stage judgment sub-unit M27, output terminal is connected with the input terminal of the 5th DSUM subelements M55.14th The input terminal of AND gate circuit M53 respectively with the 3rd load stage judgment sub-unit M11 and the 7th load stage judgment sub-unit M31 Connection, output terminal are connected with the input terminal of the 5th DSUM subelements M55.
The input terminal of 15th AND gate circuit M54 respectively with the 3rd load stage judgment sub-unit M11 and the 8th load rank Section judgment sub-unit M33 connections, output terminal are connected with the input terminal of the 6th DSUM subelements M56, the 6th DSUM subelements M56's Output terminal is connected with the input terminal of the 3rd adder unit M57.
The 5th DSUM subelements M55 and the 6th DSUM subelements M56 is the digital quantity adduction with increment in the present embodiment Module.Specifically, it is assumed that in the 5th DSUM subelements M55 respectively with the 11st AND gate circuit M50, the 12nd AND gate circuit M51, 13rd AND gate circuit M52 and the corresponding increments of the 14th AND gate circuit M53 are S21, S22, S23 and S24, and the 6th DSUM are single First M56 increments corresponding with the 15th AND gate circuit M54 are S25, then when the 11st AND gate circuit M50, the 12nd AND gate circuit M51, the 13rd AND gate circuit M52, the 14th AND gate circuit M53, the 15th AND gate circuit M54 output valve for S26, S27, When S28, S29 and S30, the output valve of the 5th DSUM subelements M55 for S21 × S26+S22 × S27+S23 × S28+S24 × The output valve of S29, the 6th DSUM subelements M56 are S25 × S30.
Further, understood by foregoing in combination load stage A3B1, and N1=-6MW, N2=6MW, N3=13 and N4= When 10, the control coefrficient of fuel control amount of bias is arranged in the 1.0, therefore the 5th DSUM subelements M55 and the 11st and door electricity M50 corresponding increments in road are 1.0.In combination load stage A3B2 and N1=-6MW, N2=6MW, N3=13 and N4When=10, combustion The control coefrficient of material control amount of bias is arranged in the 0.5, therefore the 5th DSUM subelements M55 and the 12nd M51 pairs of AND gate circuit The increment answered is 0.5.In combination load stage A3B3 and N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel control is inclined The control coefrficient for the amount of putting is arranged to increment corresponding with the 13rd AND gate circuit M52 in the -0.5, therefore the 5th DSUM subelements M55 For -0.5.In combination load stage A3B4 and N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel control amount of bias Control coefrficient be arranged in the -0.75, therefore the 5th DSUM subelements M55 increment corresponding with the 14th AND gate circuit M53 for - 0.75.In conclusion the output valve of the 5th DSUM subelements M55 for 1.0 × S26+0.5 × S27-0.5 × S28+-0.75 × S29。
In combination load stage A3B5 and N1=-6MW, N2=6MW, N3=13 and N4When=10, fuel control amount of bias It is -1 that control coefrficient, which is arranged to increment corresponding with the 15th AND gate circuit M54 in the -1, therefore the 6th DSUM subelements M56, the The output valve of six DSUM subelements M56 is -1 × S30.
Below in conjunction with the accompanying drawings, the primary air fan control module 12 shown in Fig. 1 in the present embodiment is illustrated.
Refering to attached drawing 9, Fig. 9 illustrates the control logic of primary air fan control module 12 in the present embodiment.Such as Fig. 9 Shown, primary air fan control module 12 includes primary air fan intelligence aperture amount of bias control unit M76, the second choosing in the present embodiment Select device M78, third selector M71, the 4th selector M74, the second clipping unit M79, the 3rd clipping unit M72, the second speed limit Unit M80, second adder M75 and second constant unit M77.
Specifically, the input terminal of second selector M78 respectively with primary air fan intelligence aperture amount of bias control unit M76 and The M77 connections of second constant unit, the output terminal of second selector M78, the second clipping unit M79, the second speed limit unit M80, Two adder M75, third selector M71 and the 3rd clipping unit M72 are sequentially connected, the output terminal of the 4th selector M74 and The input single connection of two adder M75.
Primary air fan intelligence aperture amount of bias control unit M76 is configurable to true according to fuel quantity state in the present embodiment Determine the aperture amount of bias of primary air fan.Specifically, primary air fan intelligence aperture amount of bias control unit M76 includes the first static tune Knot unit, the first dynamic regulation subelement and the first addition subelement.The input terminal of first addition subelement is respectively with first Static regulator unit is connected with the first dynamic regulation subelement, the input terminal connection of output terminal and second selector.
First static regulator unit is configurable to the homologous thread according to fuel quantity with primary air fan electric current, determines the One aperture amount of bias.The homologous thread of fuel quantity and primary air fan electric current can be chosen in the present embodiment shifts to an earlier date according to artificial experience Setting.Meanwhile the first static regulator unit is during the first aperture amount of bias is determined in the present embodiment, with primary air fan Wind pressure is correction amount.
First dynamic regulation subelement is configurable to according to the fuel quantity state in load alternation process, to primary air fan Load regulation is carried out, obtains the second aperture amount of bias.The fuel quantity state in load alternation process can be drawn in the present embodiment It is divided into the first fuel quantity stage, the second fuel quantity stage and the 3rd fuel quantity stage.Specifically, the first fuel quantity stage refer to Fuel decrement is less than lower limit, which can represent primary air fan over-subtraction 3A first, during improving load shedding Air quantity tracking characteristics, have overcome pulverized coal preparation system inertia, then according to natural fuel amount and primary air fan electric current homologous thread into Row is adjusted.The fuel change amount that second fuel quantity stage referred to is between lower limit and upper limit value, which can be with table Show that fuel quantity is in natural fluctuation state, it is not necessary to carry out interference adjustment.Meanwhile the fuel quantity stage can also represent that plus-minus is negative The overweight middle overtravel of lotus returns to original quiescent value, and load or fuel quantity, which are not adjusted reversely, prepares.3rd fuel quantity stage Refer to that fuel increase amount is more than upper limit value, which can represent that primary air fan is crossed first and add 3A, improve load shedding mistake Air quantity tracking characteristics in journey, have overcome pulverized coal preparation system inertia, then corresponding with primary air fan electric current bent according to natural fuel amount Line is adjusted.In a preferred embodiment of the present embodiment, lower limit and upper limit value are respectively -8 tons and 8 tons.
First addition subelement is configurable to calculate the sum of the first aperture amount of bias and the second aperture amount of bias.
Further, second selector M78 is configurable to when carrying out aperture amount of bias intelligent control in the present embodiment The output of the output valve of primary air fan intelligence aperture amount of bias control unit M76 as second selector M78 is selected as a result, working as Without selecting the output valve of second constant unit M77 during aperture amount of bias intelligent control as the defeated of second selector M78 Go out result.Second clipping unit M79 is configurable to the output result of second selector M78 being limited to default third value model In enclosing.Second speed limit unit M80 is configured to the output result of the second clipping unit M79 being limited to default 4th number range It is interior.As shown in figure 9, the table when primary air fan intelligent control fling-cut switch (RCM) M17 exports digital quantity 1 to second selector M78 Show and aperture amount of bias intelligent control is carried out to primary air fan, when primary air fan intelligent control fling-cut switch (RCM) M17 is selected to second Represented when selecting device M78 output digital quantities 0 to primary air fan without aperture amount of bias intelligent control.One in the present embodiment is excellent Select in embodiment, the upper limit value of the second clipping unit M79 is 40, and lower limit is -40.
Third selector M71 is configurable to select second to add when carrying out aperture amount of bias intelligent control in the present embodiment The output valve of musical instruments used in a Buddhist or Taoist mass M75 as third selector M71 output as a result, when without being selected during aperture amount of bias intelligent control Output result of the primary air fan original aperture amount of bias as the third selector.3rd clipping unit M72 is configurable to The output result of three selector M71 is limited in default 5th number range.As shown in figure 9, when primary air fan intelligent control is thrown Cut to close and represent that carrying out aperture amount of bias to primary air fan intelligently controls when (RCM) M86 exports digital quantity 1 to third selector M71 System, represents to First air when primary air fan intelligent control fling-cut switch (RCM) M86 exports digital quantity 0 to third selector M71 Machine is without aperture amount of bias intelligent control.In a preferred embodiment of the present embodiment, the 3rd clipping unit M72's is upper Limit value is 100, lower limit 0.
The 4th selector M74 is configurable to select the 4th when carrying out aperture amount of bias intelligent control in the present embodiment The former output result of selector M74 is as new output as a result, when without selecting First air during aperture amount of bias intelligent control Output result of the machine original aperture amount of bias as the 4th selector M74.As shown in figure 9, work as primary air fan intelligent control switching Switch when (RCM) M86 exports digital quantity 1 to the 4th selector M74 and represent to carry out aperture amount of bias intelligent control to primary air fan, Represented when primary air fan intelligent control fling-cut switch (RCM) M86 exports digital quantity 0 to the 4th selector M74 to primary air fan Without aperture amount of bias intelligent control.
As shown in figure 9, in the present embodiment when the former PID control automatic start of primary air fan, primary air fan break down or When the aperture amount of bias of primary air fan intelligence aperture amount of bias control unit M76 outputs is abnormal, primary air fan PID monitorings are single First M81, primary air fan malfunction monitoring unit M82 and Quality estimation unit (TSTQ) M84 are thrown to primary air fan intelligent control respectively Cut and close (RCM) M86 output digital quantities 1, to control primary air fan intelligent control fling-cut switch (RCM) M86 to export digital quantity 0.
Below in conjunction with the accompanying drawings, the pressure fan control module 13 shown in Fig. 1 in the present embodiment is illustrated.
Refering to attached drawing 10, Figure 10 illustrates the control logic of pressure fan control module 12 in the present embodiment.Such as figure Shown in 10, pressure fan control module 13 includes pressure fan intelligence aperture amount of bias control unit M94, the 5th selection in the present embodiment Device M96, the 6th selector M89, the 7th selector M92, the 4th clipping unit M97, the 5th clipping unit M90, the 3rd speed limit list First M98, the 3rd adder M93 and three constant unit M95.
Specifically, the input terminal of the 5th selector M96 respectively with pressure fan intelligence aperture amount of bias control unit M94 and Output terminal, the 4th clipping unit M97, the 3rd speed limit unit M98, the 3rd addition of three constant unit M95, the 5th selector M96 Device M93, the 6th selector M89 and the 5th clipping unit M90 are sequentially connected, the output terminal and the 3rd addition of the 7th selector M92 The input single connection of device M93.
Pressure fan intelligence aperture amount of bias control unit M94 is configurable to determine according to fuel quantity state in the present embodiment The aperture amount of bias of pressure fan.Specifically, pressure fan intelligence aperture amount of bias control unit M94 is quiet including second in the present embodiment State regulator unit, the second dynamic regulation subelement and the second addition subelement, the input terminal of the second addition subelement respectively with Second static regulator unit is connected with the second dynamic regulation subelement, and output terminal is connected with the input terminal of the 5th selector M96.
Second static regulator unit is configurable to the homologous thread according to fuel quantity and air quantity, determines that the 3rd aperture is inclined The amount of putting, is specially：The homologous thread of fuel quantity and total blast volume is obtained first, then subtracts the value of total blast volume in acquired curve Go primary air flow and separate type burnout degree (SOFA) to be used as air output, finally determine that the 3rd aperture is inclined using an amount of oxygen as correction amount The amount of putting.
Second dynamic regulation subelement is configurable to the homologous thread according to fuel quantity and load, and pressure fan is surpassed Preceding adjusting, obtains the 4th aperture amount of bias.Can be the by the fuel quantity state demarcation in load alternation process in the present embodiment Four fuel quantity stages, the 5th fuel quantity stage and the 6th fuel quantity stage.Specifically, what the first fuel quantity stage referred to subtracts in fuel It is less than lower limit on a small quantity, which can represent 50 tons of total blast volume over-subtraction, and air quantity tracking is special during improving load shedding Property, overcome pulverized coal preparation system inertia, be good for the environment the not super row of index.The fuel change amount that second fuel quantity stage referred to is in lower limit Between value and upper limit value, which can represent overtravel during load increase and decrease returning to original quiescent value, and Reversely adjust and prepare for load or fuel quantity.3rd fuel quantity stage referred to that fuel increase amount was more than upper limit value, the fuel Stage can represent that total blast volume is crossed and add 30 tons, improve air quantity tracking characteristics during load shedding, overcome pulverized coal preparation system inertia, favorably In the not super row of environmental protection index.In a preferred embodiment of the present embodiment, lower limit and upper limit value are respectively -8 tons and 8 Ton.
Second addition subelement is configurable to calculate the sum of the 3rd aperture amount of bias and the 4th aperture amount of bias.
Further, the 5th selector M96 is configurable to when carrying out aperture amount of bias intelligent control in the present embodiment The output of the output valve of pressure fan intelligence aperture amount of bias control unit M94 as the 5th selector M96 is selected as a result, ought not Carry out selecting output of the output valve of three constant unit M95 as the 5th selector M96 during aperture amount of bias intelligent control As a result.4th clipping unit M97 is configurable to the output result of the 5th selector M96 being limited to default 6th number range It is interior.3rd speed limit unit M98 is configured to the output result of the 4th clipping unit M97 being limited in default 7th number range. As shown in Figure 10, represented when pressure fan intelligent control fling-cut switch (RCM) M104 exports digital quantity 1 to the 5th selector M96 Aperture amount of bias intelligent control is carried out to pressure fan, when pressure fan intelligent control fling-cut switch (RCM) M104 is to the 5th selector M96 is represented to pressure fan without aperture amount of bias intelligent control when exporting digital quantity 0.One in the present embodiment is preferable to carry out In scheme, the upper limit value of the 4th clipping unit M97 is 40, and lower limit is -40.
The 6th selector M89 is configurable to select the 3rd to add when carrying out aperture amount of bias intelligent control in the present embodiment The output valve of musical instruments used in a Buddhist or Taoist mass M93 as the 6th selector M89 output as a result, when without being selected during aperture amount of bias intelligent control Output result of the pressure fan original aperture amount of bias as the 6th selector M89.5th clipping unit M90 is configurable to The output result of six selector M89 is limited in default 8th number range.As shown in Figure 10, when pressure fan intelligent control switching Switch when (RCM) M104 exports digital quantity 1 to the 6th selector M89 and represent to carry out aperture amount of bias intelligent control to pressure fan, When pressure fan intelligent control fling-cut switch (RCM) M104 to the 6th selector M89 export digital quantity 0 when represent to pressure fan not into Row aperture amount of bias intelligent control.In a preferred embodiment of the present embodiment, the upper limit value of the 5th clipping unit M90 is 100, lower limit 0.
The 7th selector M92 is configurable to select the 7th when carrying out aperture amount of bias intelligent control in the present embodiment The former output result of selector M92 is as new output as a result, when without selecting pressure fan during aperture amount of bias intelligent control Output result of the former aperture amount of bias as the 7th selector M92.As shown in figure 9, work as pressure fan intelligent control fling-cut switch (RCM) represent to carry out aperture amount of bias intelligent control to pressure fan when M104 exports digital quantity 1 to the 7th selector M92, when sending Fan intelligent is represented to pressure fan without opening when controlling fling-cut switch (RCM) M104 to export digital quantity 0 to the 7th selector M92 Spend amount of bias intelligent control.
As shown in Figure 10, former PID control automatic start, the pressure fan in the present embodiment when pressure fan break down or blow When the aperture amount of bias of quick-witted energy aperture amount of bias control unit M94 outputs is abnormal, pressure fan PID monitoring unit M99, send Fan trouble monitoring unit M100 and Quality estimation unit (TSTQ) M102 is respectively to pressure fan intelligent control fling-cut switch (RCM) M104 exports digital quantity 1, to control pressure fan intelligent control fling-cut switch (RCM) M104 to export digital quantity 0.
With continued reference to attached drawing 12 and 13, Figure 12 illustrate not actuated fuel feedforward control module in the present embodiment, Primary air fan control module and pressure fan control module carry out fired power generating unit the curve of load up process during intelligent control, Figure 13 Illustrate starting fluid feedforward control module, primary air fan control module and pressure fan control module pair in the present embodiment Fired power generating unit carries out the curve of load up process during intelligent control.As shown in Figures 12 and 13, born during not actuated above-mentioned control module The fluctuation of lotus curve is larger and follow effect poor, and start above-mentioned control module afterload curve tend to be steady and follow effect compared with It is good.
Below in conjunction with the accompanying drawings, the super-heated steam temperature control module 14 shown in Fig. 1 in the present embodiment is illustrated.
Refering to attached drawing 11, Figure 11 illustrates the control logic of super-heated steam temperature control module 14 in the present embodiment.Such as Shown in Figure 11, it is single can to include the control of Desuperheating water regulating valve intelligence aperture amount of bias for super-heated steam temperature control module 14 in the present embodiment First M112, the 8th selector M114, the 9th selector M107, the tenth selector M110, the 6th clipping unit M115, the 7th amplitude limit Unit M108, the 4th speed limit unit M116, the 4th adder M111 and the 4th constant unit M113.
Specifically, the input terminal of the 8th selector M114 respectively with Desuperheating water regulating valve intelligence aperture amount of bias control unit Output terminal, the 6th clipping unit M115, the 4th speed limit unit of M112 and the 4th constant unit M111, the 8th selector M114 M116, the 4th adder M111, the 9th selector M107 and the 7th clipping unit M108 are sequentially connected, the tenth selector M110's The input single connection of output terminal and the 4th adder M111.
Desuperheating water regulating valve intelligence aperture amount of bias control unit M112 is configurable to according to superheater in the present embodiment Outlet temperature, inlet temperature and wall temperature, and the inlet temperature of attemperator determines Desuperheating water regulating valve aperture.
8th selector M114 is configurable to select Desuperheating water regulating valve intelligence when carrying out aperture amount of bias intelligent control Can aperture amount of bias control unit M112 output valve as the 8th selector M114 output as a result, when inclined without aperture Output result of the output valve of the 4th constant unit M113 as the 8th selector M114 is selected during the amount of putting intelligent control.6th Clipping unit M115 is configurable to the output result of the 8th selector M114 being limited in default 9th number range.4th Speed limit unit M116 is configurable to the output result of the 6th clipping unit M115 being limited in default tenth number range.Such as Shown in Figure 11, when Desuperheating water regulating valve intelligent control fling-cut switch (RCM) M123 exports digital quantity 1 to the 8th selector M114 Represent to carry out aperture amount of bias intelligent control, when Desuperheating water regulating valve intelligent control fling-cut switch (RCM) M123 is selected to the 8th Device M114 is represented without aperture amount of bias intelligent control when exporting digital quantity 0.In a preferred embodiment of the present embodiment In, the upper limit value of the 6th clipping unit M115 is 40, and lower limit is -40.
9th selector M107 is configurable to select the 4th adder M111 when carrying out aperture amount of bias intelligent control Output valve as the 9th selector M107 output as a result, when without selecting desuperheating water during aperture amount of bias intelligent control Output result of the regulating valve original aperture amount of bias as the 9th selector M107.7th clipping unit M108 be configurable to by The output result of 9th selector M107 is limited in default 11st number range.As shown in figure 11, Desuperheating water regulating valve is worked as Intelligent control fling-cut switch (RCM) M123 represents to carry out aperture amount of bias intelligence when exporting digital quantity 1 to the 9th selector M107 Control, represents when Desuperheating water regulating valve intelligent control fling-cut switch (RCM) M123 exports digital quantity 0 to the 9th selector M107 Without aperture amount of bias intelligent control.In a preferred embodiment of the present embodiment, the 7th clipping unit M108's is upper Limit value is 100, lower limit 0.
Tenth selector M110 is configurable to select the tenth selector when carrying out aperture amount of bias intelligent control The former output result of M110 is as new output as a result, when without selecting Desuperheating water regulating valve during aperture amount of bias intelligent control Output result of the former aperture amount of bias as the tenth selector M110.
As shown in figure 11, the former PID control automatic start in the present embodiment when Desuperheating water regulating valve, auxiliary machinery fault Reduction of Students' Study Load The aperture amount of bias of lotus, main fuel quantity tripping or Desuperheating water regulating valve aperture amount of bias control unit M112 outputs is abnormal When, Desuperheating water regulating valve PID monitoring unit M117, auxiliary machinery fault monitoring unit M118, main fuel trip monitoring unit M119 and Quality estimation unit (TSTQ) M120 exports digital quantity 1 to Desuperheating water regulating valve intelligent control fling-cut switch (RCM) M123 respectively, To control Desuperheating water regulating valve intelligent control fling-cut switch (RCM) M123 to export digital quantity 0.
Not actuated super-heated steam temperature control module pair in the present embodiment is illustrated with continued reference to attached drawing 14 and 15, Figure 14 Fired power generating unit carries out the operation curve of Desuperheating water regulating valve executing agency, Figure 15 during intelligent control and illustrates the present embodiment The middle operation curve for starting super-heated steam temperature control module and Desuperheating water regulating valve executing agency during intelligent control being carried out to fired power generating unit. As shown in FIG. 14 and 15, Desuperheating water regulating valve executing agency acts frequently during not actuated above-mentioned control module, and starts above-mentioned control Molding Kuai Hou Desuperheating water regulating valves executing agency operating frequency is decreased obviously, and increases its service life, thereby reduce use into This.
It will be understood by those skilled in the art that the module in the system in embodiment can adaptively be changed And they are arranged in one or more systems different from the embodiment.Can the module in embodiment or unit or Component is combined into a module or unit or component, and can be divided into multiple submodule or subelement or subgroup in addition Part.In addition at least some in such feature and/or process or unit exclude each other, any combinations can be used To all features disclosed in this specification (including adjoint claim, summary and attached drawing) and such disclosed any side All processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint right will Ask, make a summary and attached drawing) disclosed in each feature can be replaced by the alternative features for providing identical, equivalent or similar purpose.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention Within the scope of and form different embodiments.For example, in claims of the present invention, embodiment claimed It is one of any mode to use in any combination.
It should be noted that the present invention will be described rather than limits the invention for above-described embodiment, and ability Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims, Any reference symbol between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such Element.The present invention can be realized by means of including the hardware of some different elements and by means of properly programmed PC. If in the unit claim for listing equipment for drying, several in these devices can be come specific by same hardware branch Embody.The use of word first, second, and third does not indicate that any order.These words can be construed to title.
So far, the preferred embodiment shown in the drawings technical solution that the invention has been described, still, this area are had been combined Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these embodiments.Without departing from this On the premise of the principle of invention, those skilled in the art can make correlation technique feature equivalent change or replacement, these Technical solution after changing or replacing it is fallen within protection scope of the present invention.

Claims (11)

1. a kind of fired power generating unit intelligence control system, it is characterised in that the system comprises fuel feedforward control module, it is configured Amount of bias is controlled to adjust fuel according to load condition, and fuel control is corrected according to the fuel control amount of bias after the adjustment Desired value；
The fuel feedforward control module includes load condition quantifying unit, load changing rate unit, the first multiplier, the first limit Width unit, the first speed limit unit, first constant unit and first selector；The input terminal of first multiplier respectively with it is described Load condition quantifying unit is connected with load changing rate unit, the output terminal of first multiplier, the first clipping unit, first Speed limit unit and first selector are sequentially connected；The first constant unit is connected with the input terminal of the first selector；
First clipping unit, is configured to the first multiplier output valve being limited in default first number range；Institute The first speed limit unit is stated, is configured to the change rate of the first clipping unit output valve being limited to default second value scope It is interior；
The first selector, is configured to when the output valve conduct for selected during fuel feedforward control the first speed limit unit Fuel controls amount of bias, selects the output valve of the first constant unit to be controlled as fuel when being controlled without fuel feedforward Amount of bias.
2. system according to claim 1, it is characterised in that the load condition quantifying unit includes first and quantifies son list Member, second quantify subelement, the 3rd quantization subelement, first adder, the second multiplier and constant subelement；
The input terminal of the first adder quantifies subelement with described first respectively, the second quantization subelement and the 3rd quantifies son Unit connects；The input terminal of second multiplier is connected with the output terminal and constant subelement of the first adder respectively, The output terminal of second multiplier is connected with the input terminal of first multiplier；
Described first quantifies subelement, is configured to work as Δ L≤N1When load condition is quantified；Described second quantifies subelement, It is configured to work as N1＜ Δ L ＜ N2When load condition is quantified；Described 3rd quantifies subelement, is configured to work as Δ L >=N2When pair Load condition is quantified；Wherein, the Δ L=Lr-Lg, LrFor actual negative charge values, LgFor target load value, N1And N2It is threshold Value.
3. system according to claim 2, it is characterised in that the load condition quantifying unit further includes：
First load stage judgment sub-unit, is configured to judge whether load condition is in the first load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, first load stage is Δ L≤N1When load condition；
Second load stage judgment sub-unit, is configured to judge whether load condition is in the second load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, second load stage is N1＜ Δ L ＜ N2When load condition；
3rd load stage judgment sub-unit, is configured to judge whether load condition is in the 3rd load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, the 3rd load stage is Δ L >=N2When load condition；
4th load stage judgment sub-unit, is configured to judge whether load condition is in the 4th load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, the 4th load stage is K≤- N3When load condition, K=kL+10×kP, kLFor load changing rate, kPFor pressure change rate, N3For threshold value and N3＞ 0；
5th load stage judgment sub-unit, is configured to judge whether load condition is in the 5th load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, the 5th load stage is-N3＜ K ＜-N4When load condition, N4For threshold value And N4＞ 0；
6th load stage judgment sub-unit, is configured to judge whether load condition is in the 6th load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, the 6th load stage is-N4≤K≤N4When load condition；
7th load stage judgment sub-unit, is configured to judge whether load condition is in the 7th load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, the 7th load stage is N4＜ K ＜ N3When load condition；
8th load stage judgment sub-unit, is configured to judge whether load condition is in the 8th load stage, if then exporting Digital quantity 1, if otherwise exporting digital quantity 0；Wherein, the 8th load stage is K >=N3When load condition.
4. system according to claim 3, it is characterised in that it is described first quantify subelement include the first AND gate circuit, Second AND gate circuit, the 3rd AND gate circuit, the 4th AND gate circuit, the 5th AND gate circuit, the first DSUM subelements, the 2nd DSUM Unit and the first adder unit；
The input terminal of first AND gate circuit is sentenced with the first load stage judgment sub-unit and the 4th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the first DSUM subelements；The output of the first DSUM subelements End is connected with the input terminal of first adder unit, and output terminal and the load condition of first adder unit quantify list The input terminal connection of first adder in member；
The input terminal of second AND gate circuit is sentenced with the first load stage judgment sub-unit and the 5th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the first DSUM subelements；
The input terminal of 3rd AND gate circuit is sentenced with the first load stage judgment sub-unit and the 6th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the first DSUM subelements；
The input terminal of 4th AND gate circuit is sentenced with the first load stage judgment sub-unit and the 7th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the first DSUM subelements；
The input terminal of 5th AND gate circuit is sentenced with the first load stage judgment sub-unit and the 8th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the 2nd DSUM subelements；The output of the 2nd DSUM subelements End is connected with the input terminal of first adder unit.
5. system according to claim 3, it is characterised in that it is described second quantify subelement include the 6th AND gate circuit, 7th AND gate circuit, the 8th AND gate circuit, the 9th AND gate circuit, the tenth AND gate circuit, the 3rd DSUM subelements, the 4th DSUM Unit and the second adder unit；
The input terminal of 6th AND gate circuit is sentenced with the second load stage judgment sub-unit and the 4th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the 3rd DSUM subelements；The output of the 3rd DSUM subelements End is connected with the input terminal of second adder unit, and output terminal and the load condition of second adder unit quantify list The input terminal connection of first adder in member；
The input terminal of 7th AND gate circuit is sentenced with the second load stage judgment sub-unit and the 5th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the 3rd DSUM subelements；
The input terminal of 8th AND gate circuit is sentenced with the second load stage judgment sub-unit and the 6th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the 3rd DSUM subelements；
The input terminal of 9th AND gate circuit is sentenced with the second load stage judgment sub-unit and the 7th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the 3rd DSUM subelements；
The input terminal of tenth AND gate circuit is sentenced with the second load stage judgment sub-unit and the 8th load stage respectively Disconnected subelement connection, output terminal are connected with the input terminal of the 4th DSUM subelements；The output of the 4th DSUM subelements End is connected with the input terminal of second adder unit.
6. system according to claim 3, it is characterised in that the described 3rd, which quantifies subelement, includes the 11st and door electricity Road, the 12nd AND gate circuit, the 13rd AND gate circuit, the 14th AND gate circuit, the 15th AND gate circuit, the 5th DSUM are single Member, the 6th DSUM subelements and the 3rd adder unit；
The input terminal of 11st AND gate circuit respectively with the 3rd load stage judgment sub-unit and the 4th load stage Judgment sub-unit connects, and output terminal is connected with the input terminal of the 5th DSUM subelements；The 5th DSUM subelements it is defeated Outlet is connected with the input terminal of the 3rd adder unit, and output terminal and the load condition of the 3rd adder unit quantify The input terminal connection of first adder in unit；
The input terminal of 12nd AND gate circuit respectively with the 3rd load stage judgment sub-unit and the 5th load stage Judgment sub-unit connects, and output terminal is connected with the input terminal of the 5th DSUM subelements；
The input terminal of 13rd AND gate circuit respectively with the 3rd load stage judgment sub-unit and the 6th load stage Judgment sub-unit connects, and output terminal is connected with the input terminal of the 5th DSUM subelements；
The input terminal of 14th AND gate circuit respectively with the 3rd load stage judgment sub-unit and the 7th load stage Judgment sub-unit connects, and output terminal is connected with the input terminal of the 5th DSUM subelements；
The input terminal of 15th AND gate circuit respectively with the 3rd load stage judgment sub-unit and the 8th load stage Judgment sub-unit connects, and output terminal is connected with the input terminal of the 6th DSUM subelements；The 6th DSUM subelements it is defeated Outlet is connected with the input terminal of the 3rd adder unit.
7. according to claim 1-6 any one of them systems, it is characterised in that the system also includes primary air fan to control mould Block, it is configured to according to fuel quantity state adjustment primary air fan aperture amount of bias；The primary air fan control module is included once Fan intelligent aperture amount of bias control unit, second selector, third selector, the 4th selector, the second clipping unit, the 3rd Clipping unit, the second speed limit unit, second adder and second constant unit；
The input terminal of the second selector respectively with the primary air fan intelligence aperture amount of bias control unit and second constant Unit connects；The output terminal of the second selector, the second clipping unit, the second speed limit unit, second adder, the 3rd selection Device and the 3rd clipping unit are sequentially connected；The output terminal of 4th selector and the input single connection of the second adder；
The primary air fan intelligence aperture amount of bias control unit, is configured to determine primary air fan according to the fuel quantity state Aperture amount of bias；
The second selector, is configured to select the primary air fan intelligence aperture inclined when carrying out aperture amount of bias intelligent control The output valve of the amount of putting control unit as the second selector output as a result, when without being selected during aperture amount of bias intelligent control Select output result of the output valve as the second selector of the second constant unit；Second clipping unit, is configured to The output result of the second selector is limited in the range of default third value；The second speed limit unit, be configured to by The output result of second clipping unit is limited in default 4th number range；
The third selector, is configured to select the output valve of the second adder when carrying out aperture amount of bias intelligent control Output as the third selector when without aperture amount of bias intelligent control as a result, select the biasing of primary air fan original aperture Measure the output result as the third selector；3rd clipping unit, is configured to the output knot of the third selector Fruit is limited in default 5th number range；
4th selector, is configured to select the former output knot of the 4th selector when carrying out aperture amount of bias intelligent control Fruit is somebody's turn to do as new output as a result, selecting primary air fan original aperture amount of bias to be used as when without aperture amount of bias intelligent control The output result of 4th selector.
8. system according to claim 7, it is characterised in that the primary air fan intelligence aperture amount of bias control unit bag Include the first static regulator unit, the first dynamic regulation subelement and the first addition subelement；The first addition subelement Input terminal is connected with the described first static regulator unit and the first dynamic regulation subelement respectively, output terminal and the described second choosing Select the input terminal connection of device；
Described first static regulator unit, is configured to the homologous thread with primary air fan electric current according to fuel quantity, determines first Aperture amount of bias；
The first dynamic regulation subelement, is configured to according to the fuel quantity state in load alternation process, to primary air fan into Row load regulation, obtains the second aperture amount of bias；
The first addition subelement, is configured to calculate the sum of the first aperture amount of bias and the second aperture amount of bias.
9. according to claim 1-6 any one of them systems, it is characterised in that the system also includes pressure fan to control mould Block, it is configured to according to fuel quantity state adjustment pressure fan aperture amount of bias；It is quick-witted that the pressure fan control module includes air-supply Can aperture amount of bias control unit, the 5th selector, the 6th selector, the 7th selector, the 4th clipping unit, the 5th amplitude limit list Member, the 3rd speed limit unit, the 3rd adder and three constant unit；
The input terminal of 5th selector respectively with the pressure fan intelligence aperture amount of bias control unit and three constant list Member connection；Output terminal, the 4th clipping unit, the 3rd speed limit unit, the 3rd adder, the 6th selector of 5th selector It is sequentially connected with the 5th clipping unit；The output terminal of 7th selector and the input single connection of the 3rd adder；
The pressure fan intelligence aperture amount of bias control unit, is configured to determine the aperture of pressure fan according to the fuel quantity state Amount of bias；
5th selector, is configured to select the pressure fan intelligence aperture to bias when carrying out aperture amount of bias intelligent control Measure control unit output valve as the 5th selector output as a result, when without being selected during aperture amount of bias intelligent control Output result of the output valve of the three constant unit as the 5th selector；4th clipping unit, be configured to by The output result of 5th selector is limited in default 6th number range；The 3rd speed limit unit, is configured to institute The output result for stating the 4th clipping unit is limited in default 7th number range；
6th selector, is configured to select the output valve of the 3rd adder when carrying out aperture amount of bias intelligent control Output as the 6th selector when without aperture amount of bias intelligent control as a result, select pressure fan original aperture amount of bias Output result as the 6th selector；5th clipping unit, is configured to the output result of the 6th selector It is limited in default 8th number range；
7th selector, is configured to select the former output knot of the 7th selector when carrying out aperture amount of bias intelligent control Fruit as new output as a result, selected when without aperture amount of bias intelligent control pressure fan original aperture amount of bias as this The output result of seven selectors.
10. system according to claim 9, it is characterised in that the pressure fan intelligence aperture amount of bias control unit bag Include the second static regulator unit, the second dynamic regulation subelement and the second addition subelement；The second addition subelement Input terminal is connected with the described second static regulator unit and the second dynamic regulation subelement respectively, output terminal and the described 5th choosing Select the input terminal connection of device；
Described second static regulator unit, is configured to the homologous thread according to fuel quantity and air quantity, determines that the 3rd aperture biases Amount；
The second dynamic regulation subelement, is configured to, according to the fuel quantity state in load alternation process, carry out pressure fan Load regulation, obtains the 4th aperture amount of bias；
The second addition subelement, is configured to calculate the sum of described 3rd aperture amount of bias and the 4th aperture amount of bias.
11. according to claim 1-6 any one of them systems, it is characterised in that the system also includes super-heated steam temperature control Module, it is configured to the temperature information adjustment Desuperheating water regulating valve aperture according to fired power generating unit；The super-heated steam temperature control module Including Desuperheating water regulating valve intelligence aperture amount of bias control unit, the 8th selector, the 9th selector, the tenth selector, the 6th Clipping unit, the 7th clipping unit, the 4th speed limit unit, the 4th adder and the 4th constant unit；
The input terminal of 8th selector respectively with the Desuperheating water regulating valve intelligence aperture amount of bias control unit and the 4th Constant unit connects；The output terminal of 8th selector, the 6th clipping unit, the 4th speed limit unit, the 4th adder, the 9th Selector and the 7th clipping unit are sequentially connected；The output terminal of tenth selector and the input Dan Lian of the 4th adder Connect；
The Desuperheating water regulating valve intelligence aperture amount of bias control unit, is configured to outlet temperature, entrance temperature according to superheater Degree and wall temperature, and the inlet temperature of attemperator determine Desuperheating water regulating valve aperture；
8th selector, is configured to select the Desuperheating water regulating valve intelligently to open when carrying out aperture amount of bias intelligent control The output of the output valve of amount of bias control unit as the 8th selector is spent as a result, when without aperture amount of bias intelligent control When select output result of the output valve of the 4th constant unit as the 8th selector；6th clipping unit, matches somebody with somebody It is set to and the output result of the 8th selector is limited in default 9th number range；The 4th speed limit unit, configuration For the output result of the 6th clipping unit is limited in default tenth number range；
9th selector, is configured to select the output valve of the 4th adder when carrying out aperture amount of bias intelligent control Output as the 9th selector when without aperture amount of bias intelligent control as a result, select Desuperheating water regulating valve original aperture Output result of the amount of bias as the 9th selector；7th clipping unit, is configured to the defeated of the 9th selector Go out result to be limited in default 11st number range；
Tenth selector, is configured to select the former output knot of the tenth selector when carrying out aperture amount of bias intelligent control Fruit is as new output as a result, selecting Desuperheating water regulating valve original aperture amount of bias to make when without aperture amount of bias intelligent control For the output result of the tenth selector.
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