CN105627287B - The feed pump RB control systems and method of Supercritical CFB Boiler generating set - Google Patents
The feed pump RB control systems and method of Supercritical CFB Boiler generating set Download PDFInfo
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- CN105627287B CN105627287B CN201510977739.2A CN201510977739A CN105627287B CN 105627287 B CN105627287 B CN 105627287B CN 201510977739 A CN201510977739 A CN 201510977739A CN 105627287 B CN105627287 B CN 105627287B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000446 fuel Substances 0.000 claims abstract description 34
- 230000006978 adaptation Effects 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000003546 flue gas Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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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
- F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
- F22B35/10—Control systems for steam boilers for steam boilers of forced-flow type of once-through type
- F22B35/12—Control systems for steam boilers for steam boilers of forced-flow type of once-through type operating at critical or supercritical pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2241/00—Applications
- F23N2241/10—Generating vapour
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2900/00—Special features of, or arrangements for controlling combustion
- F23N2900/05005—Mounting arrangements for sensing, detecting or measuring devices
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Control Of Turbines (AREA)
Abstract
The present invention relates to Sector of Cfb Boilers, disclose the feed pump RB control systems and method of a kind of Supercritical CFB Boiler generating set, and the control system connects water supply system and boiler system respectively, and the control system includes：Harvester, for acquiring the trip signal of each feed pump in the water supply system；And control device, for in the case where collecting at least one trip signal, compare the current unit load and the first setting value of the generating set, and in the case where the current unit load is more than first setting value, the boiler master controller of the boiler system is controlled to switch to the manual method of operation, the boiler master controller is made to be input to the fuel quantity of boiler until reaching the corresponding fuel quantity of RB desired values according to feed pump RB rate adaptations.The feed pump RB control systems of Supercritical CFB Boiler generating set of the present invention can in Feed Pump Trip fast cutback.
Description
Technical field
The present invention relates to CFB (Circulating Fluidized Bed, recirculating fluidized bed) boiler technology field, specifically
Ground, be related to a kind of feed pump RB of Supercritical CFB Boiler generating set (Runback, runback) control systems and
Method.
Background technology
RB is when the maximum output of generating set being made when major pant item fault trip in generating set to be less than given load,
Unit load is quickly reduced to practical institute's energy by Coordinated Control Systems (Control Coordination System, CCS)
The corresponding output reached, and unit is controlled to allow to continue to run in parameter area.
Main steam and main feed system are using unit style in Supercritical CFB Boiler generating set, and the 2 × 50% of crew qiting
+ 30% electric pump group water supply system of heat pump group, two heat pumps during normal operation are driven using the adjustable small turbine machine of rotating speed,
Electric pump is used in Unit Commitment.When generating set heavy-duty service, a feed pump trips suddenly, and feedwater flow step subtracts
Half, and existing a large amount of high temperature bed materials continue heat release in CFB boiler, and coal-water ratio is caused to lack of proper care, easily boiler heating surface is caused to surpass
Temperature, being unable to control generating set is allowing stable operation in parameter area, such as cannot correctly realize effective fast cutback, will
Generating set is caused to trip, so as to cause serious economic loss.
Invention content
The object of the present invention is to provide the feed pump RB control systems and method of a kind of Supercritical CFB Boiler generating set,
Can in Feed Pump Trip fast cutback.
To achieve these goals, the present invention provides a kind of feed pump RB controls system of Supercritical CFB Boiler generating set
System, the control system connect water supply system and boiler system respectively, and the control system includes：Harvester, for acquiring
The trip signal of each feed pump in the water supply system；And control device, for collecting at least one trip signal
In the case of, the current unit load and the first setting value of the generating set, and it is more than institute in the current unit load
In the case of stating the first setting value, the boiler master controller of the boiler system is controlled to switch to the manual method of operation, made described
Boiler master controller is input to the fuel quantity of boiler until reaching the corresponding fuel of RB desired values according to feed pump RB rate adaptations
Amount.
The feed pump RB control systems of Supercritical CFB Boiler generating set of the present invention acquire feedwater by harvester in real time
The trip signal of pump, and in Feed Pump Trip, further compared by control device the current unit load of generating set with
First setting value, and when current unit load is more than the first setting value, the boiler master of the boiler system can be controlled in time
Device processed switches to the manual method of operation, and the boiler master controller is made to be input to the fuel of boiler according to feed pump RB rate adaptations
Amount is until reach the corresponding fuel quantity of RB desired values, so as to make the unit load of generating set fast with the reduction of fuel
Speed declines, it is ensured that the stable operation of equipment.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention, but be not construed as limiting the invention together.In the accompanying drawings：
Fig. 1 is the function structure chart of the feed pump RB control systems of Supercritical CFB Boiler generating set of the present invention；
Fig. 2 is feed pump RB operation condition schematic diagrames；
Fig. 3 is the calculation flow chart of RB rates and RB desired values；
Fig. 4 is the control flow chart to main vapour pressure setting value；
Fig. 5 is the control flow chart to feed pump.
Reference sign
1 water supply system, 2 boiler system
3 steam turbine system, 4 harvester
5 control devices
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As shown in Figure 1, the feed pump RB control systems of Supercritical CFB Boiler generating set of the present invention are connected respectively to water system
System 1 and boiler system 2.Wherein, the feed pump RB control systems of Supercritical CFB Boiler generating set of the present invention include harvester
4, for acquiring the trip signal of each feed pump in the water supply system 1；And control device 5, for collecting at least one
In the case of a trip signal, the current unit load and the first setting value of the generating set, and in the current machine
In the case that group load is more than first setting value, the boiler master controller of the boiler system 2 is controlled to switch to manual fortune
Line mode makes the boiler master controller be input to the fuel quantity of boiler until reaching RB targets according to feed pump RB rate adaptations
It is worth corresponding fuel quantity.Wherein, first setting value is generally 350MW.
The feed pump RB control systems of Supercritical CFB Boiler generating set of the present invention acquire feedwater by harvester in real time
The trip signal of pump, and in Feed Pump Trip, further compared by control device the current unit load of generating set with
First setting value when current unit load is more than the first setting value, can control the boiler master system of the boiler system in time
Device switches to the manual method of operation, and the boiler master controller is made to be input to the fuel quantity of boiler according to feed pump RB rate adaptations
Until reach the corresponding fuel quantity of RB desired values, so as to make the unit load of generating set quick with the reduction of fuel
Decline, response is rapid；Control accuracy is high, it can be ensured that the stable operation of equipment.
Wherein, when feed pump RB is acted, the RB rates are feed pump RB rates, and RB desired values are feed pump RB targets
Value.The output power and the current unit load of the RB rates and RB desired values according to corresponding to the fuel quantity determine.
After Feed Pump Trip, the boiler master controller switches to the manual method of operation, and judges the burning corresponding to lMW loads
Amount, is then scaled the corresponding fuel quantity of feed pump RB desired values, boiler is input to further according to RB rate adaptations
Fuel quantity is drawn close to RB desired values, so that it is guaranteed that the accuracy adjusted.
As shown in Figure 1, the control device 5 is also connected with steam turbine system 3, the control device 5 is additionally operable to control the vapour
The turbine main control device of machine system 3 switches to the turbine follow method of operation, and the turbine main control device is made to adjust Steam Turhine Adjustment
The valve opening of valve, the sliding pressure curve when operation curve of main vapour pressure setting value being made to switch to feed pump RB.Relative to normal
The sliding pressure curve of operation, the main vapour pressure setting value higher that the sliding pressure curve during feed pump RB determines, so as to reduce water
The evaporation of steam, it is ensured that boiler heating surface has enough cooling media.Further, the control device 5 is additionally operable to passing through
The main vapour pressure setting value that sliding pressure curve during feed pump RB determines carries out inertial delay processing, change rate limitation processing successively,
Accurately to adjust main vapour pressure setting value.
In addition, the harvester 4 is additionally operable to acquire the feedwater flow of the water supply system 1；The control device 5 is also used
In the deviation according to the feedwater flow and the operating load of water supply system, the operating load of each operation feed pump is distributed, and is controlled
It makes each operation feed pump and undertakes corresponding operating load.The control device 5 controls each operation feed pump fast according to setting speed
The operating load for maximum output, quickly sharing tripping feed pump is opened, to adjust Stream temperature degree, further adjusts operating parameter,
Make it in controlled range.
Preferred embodiment, the harvester 4 are additionally operable to the main steam flow in steam-water separator exit in acquisition boiler system 2
Amount；The control device 5 is additionally operable to carry out enthalpy correction to the main steam flow, and by the corrected value and pot of the main steam flow
Stove recepts the caloric and flue gas oxygen content superposition, to determine the operating load of the water supply system.
The response that the micro- superheat steam temperature signal in steam-water separator exit disturbs coal-water ratio is more quick, approximate
For first order inertial loop, main steam flow is more stable, is further corrected by enthalpy, quickly coal-water ratio can be overcome to disturb, obtained
To more accurate main steam flow.Preferably, boiler caloric receptivity and flue gas oxygen content also can be used to the main steam flow after correction
It is modified, so that it is determined that the operating load of water supply system.
The feed pump RB control systems of Supercritical CFB Boiler generating set of the present invention, can be timely in Feed Pump Trip
Relevant device each in generating set is accurately controlled, so that the current unit load rapid decrease of generating set.But it is
The unit load for avoiding generating set is too low, influences generating efficiency, and the control device also needs to current unit described in comparison and bears
Lotus and the second setting value when the unit load is less than the second setting value, make generating set maintain coordination mode operation or stop
Only under-capacity operation mode (i.e. feed pump RB resets) and recovery extremely maintenance coordination mode operation.Wherein, second setting value
Can be 330MW.
The present invention also provides a kind of feed pump RB control methods of Supercritical CFB Boiler generating set, the control methods
Including：Acquire the trip signal of each feed pump in water supply system；In the case where collecting at least one trip signal, compare institute
The current unit load and the first setting value of generating set are stated, and is more than the situation of the first setting value in the current unit load
Under, the boiler master controller of boiler system is controlled to switch to the manual method of operation, makes the boiler master controller according to feed pump
RB rate adaptations are input to the fuel quantity of boiler until reaching the corresponding fuel quantity of RB desired values.
As shown in Fig. 2, the operation conditions of each relevant device is met the requirements (for example, according to rated power in generating set
Normal operation, tripping but can repair when) and the current unit load be more than 350MW when, can implement feed pump RB control.
Wherein, when feed pump RB is acted, the RB rates are feed pump RB rates, and RB desired values are feed pump RB targets
Value.The output power and the current unit load of the RB rates and RB desired values according to corresponding to the fuel quantity determine.
Specific (wherein, T1-T2 is handover module, and A1-A2 is assignment module) as shown in Figure 3.
The computational methods of RB rates：
Calculate the ratio (fuel that current coal quality 1MW needs of current unit load and the output power corresponding to fuel
Amount), since the output power corresponding to current unit load and fuel is the numerical value of dynamic change, current unit load
Ratio with the output power corresponding to fuel is also the numerical value of dynamic change.Judge whether a wherein feed pump stops transport (i.e.
Tripping), when not stopping transport, the ratio of current unit load and the output power corresponding to fuel is exported as handover module T1
(current time) otherwise exports the ratio of last moment.Further according to formula RB rates=(output valve of assignment modules A 1)
× (output valve of handover module T1) determines RB rates.
RB desired values are determined simultaneously：
Judge whether a wherein feed pump stops transport (tripping), and when not stopping transport, handover module T switches to assignment mould
The output valve (generally 260MW) of block A2, otherwise handover module T2 switches to current unit load and exports.Compared by comparison module
The output valve of handover module T2 and the size of current unit load, export smaller value.Further according to formula RB desired values=(cut
Change the mold the output valve of block T1) × (output valve of comparison module), determine RB desired values (fuel).
In addition, the feed pump RB control methods of Supercritical CFB Boiler generating set of the present invention further include：Compare described current
Unit load and the second setting value when the current unit load is less than second setting value, make generating set maintain association
Tune mode runs or stops under-capacity operation mode and restores to maintenance coordination mode operation.Wherein, second setting value can
For 330WM.Concrete operations are as shown in Figure 3：In a feedwater pump shutdown, calculate current unit load and exported with handover module T2
The difference of value when the difference is higher than the first fiducial value (such as 90MW, current unit load is more than 350MW at this time), starts
Under-capacity operation (i.e. feed pump RB set)；When the difference is higher than the second fiducial value (such as 70MW, at this time current unit load
Less than 330MW) when, stop under-capacity operation (i.e. feed pump RB resets) and restore to maintenance coordination mode operation.
The feed pump RB control methods of Supercritical CFB Boiler generating set of the present invention further include the steam turbine of control steam turbine system
Master controller switches to the turbine follow method of operation, and the turbine main control device is made to adjust the valve opening of turbine governor valve,
Sliding pressure curve when the operation curve of main vapour pressure setting value being made to switch to feed pump RB.It is bent relative to the sliding pressure of normal operation
Line, the main vapour pressure setting value higher that the sliding pressure curve during feed pump RB determines, so as to reduce the evaporation of vapor, it is ensured that
Boiler heating surface has enough cooling media.Further, the feed pump RB controls of Supercritical CFB Boiler generating set of the present invention
Method further includes：The main vapour pressure setting value that sliding pressure curve during to by feed pump RB determines is carried out at inertial delay successively
Reason, change rate limitation processing, accurately to adjust main vapour pressure setting value.
As shown in figure 4, when generating set under-capacity operation, the operation of main vapour pressure setting value is made by handover module T3
Curve is switched to sliding pressure curve F during feed pump RB by normal operation sliding pressure curve F (x)1(x), then further pass through inertia
Delay process, change rate limitation limit accurately to handle.Wherein, the delay time in inertial delay processing can be born by current unit
Lotus, which calculates, to be determined.
In addition, the feed pump RB control methods of Supercritical CFB Boiler generating set of the present invention are still further comprised to feedwater
The control of pump.As shown in figure 5, the main steam flow in steam-water separator exit in boiler system is acquired, and to the main steam flow
Carry out enthalpy correction；The corrected value of the main steam flow with boiler is recepted the caloric and flue gas oxygen content is superimposed, to determine described give
The operating load of water system；Acquire the feedwater flow of the water supply system；According to the operation of the feedwater flow and water supply system
The deviation of load and the output valve of assignment modules A 3, distribute the operating load of each operation feed pump, and control each operation feed pump
Undertake corresponding operating load.
Each operation feed pump opens the operating load for maximum output, quickly sharing tripping feed pump according to setting speed soon,
To adjust Stream temperature degree, so that it is guaranteed that operating parameter is in controlled range.
Since CFB boiler thermal inertia is big, when Feed Pump Trip occurs, superheater, reheater Desuperheating water regulating valve need not
Quick closedown is still automatic control mode, to adjust vapor (steam) temperature.
The present invention is input to the fuel of boiler according to RB rate adaptations when Feed Pump Trip occurs for Supercritical CFB Boiler
Amount is reduced to the corresponding fuel quantity of RB desired values, unit load can with the reduction of fuel quantity rapid decrease.By to boiler
The many kinds of parameters such as fuel quantity, steamer pusher side main vapour pressure setting value and water supply system side confluent and corresponding equipment in system
Regulation and control, so as to fulfill the quick adjustment to unit load, to ensure unit load and major parameter in controlled range.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (8)
1. a kind of feed pump assist trouble load shedding (RB) the control system of supercritical circulating fluidized bed (CFB) boiler generating set
System, which is characterized in that the control system connects water supply system and boiler system respectively, and the control system includes：
Harvester, for acquiring the trip signal of each feed pump in the water supply system；And
Control device, in the case where collecting at least one trip signal, the current unit of the generating set
Load and the first setting value, and in the case where the current unit load is more than first setting value, control the boiler
The boiler master controller of system switches to the manual method of operation, makes the boiler master controller defeated according to feed pump RB rate adaptations
Enter to the fuel quantity of boiler until reaching the corresponding fuel quantity of RB desired values；
Wherein, the output power and the current unit load of the RB rates and RB desired values according to corresponding to the fuel quantity
It determines,
Wherein, the harvester is additionally operable to acquire the feedwater flow of the water supply system；
The control device is additionally operable to the deviation of the operating load according to the feedwater flow and water supply system, distribution is each run to
The operating load of water pump, and each operation feed pump is controlled to undertake corresponding operating load；
The harvester is additionally operable to the main steam flow in steam-water separator exit in acquisition boiler system；
The control device is additionally operable to carry out enthalpy correction to the main steam flow, and by the corrected value and pot of the main steam flow
Stove recepts the caloric and flue gas oxygen content superposition, to determine the operating load of the water supply system.
2. the feed pump RB controls system of supercritical circulating fluidized bed (CFB) boiler generating set according to claim 1
System, which is characterized in that
The control device is also connected with steam turbine system, the turbine main control device for controlling the steam turbine system switch to steam turbine with
With the method for operation, the turbine main control device is made to adjust the valve opening of turbine governor valve, make the fortune of main vapour pressure setting value
Row curve switches to sliding pressure curve during feed pump RB.
3. the feed pump RB controls system of supercritical circulating fluidized bed (CFB) boiler generating set according to claim 2
System, which is characterized in that the main vapour pressure that the sliding pressure curve when control device is additionally operable to by feed pump RB determines is set
Value carries out inertial delay processing, change rate limitation processing successively.
4. the feedwater of supercritical circulating fluidized bed (CFB) boiler generating set according to any one of claim 1-3
Pump RB control systems, which is characterized in that
The control device is additionally operable to current unit load and the second setting value described in comparison, is less than in the current unit load
During second setting value, generating set is made to maintain coordination mode operation or stop under-capacity operation mode and restore extremely to maintain
Coordination mode is run.
A kind of 5. feed pump RB control methods of supercritical circulating fluidized bed (CFB) boiler generating set, which is characterized in that institute
Control method is stated to include：
Acquire the trip signal of each feed pump in water supply system；
In the case where collecting at least one trip signal, the current unit load of the generating set and the first setting
Value, and in the case where the current unit load is more than the first setting value, the boiler master controller of boiler system is controlled to switch
To the manual method of operation, the boiler master controller is made to be input to the fuel quantity of boiler until reaching according to feed pump RB rate adaptations
To the corresponding fuel quantity of RB desired values；
Wherein, the output power and the current unit load of the RB rates and RB desired values according to corresponding to the fuel quantity
It determines,
Wherein, the control method further includes：
Acquire the feedwater flow of the water supply system；
According to the deviation of the feedwater flow and the operating load of water supply system, the operating load of each operation feed pump is distributed, and
Each operation feed pump is controlled to undertake corresponding operating load；
The main steam flow in steam-water separator exit in boiler system is acquired, and enthalpy correction is carried out to the main steam flow；
The corrected value of the main steam flow with boiler is recepted the caloric and flue gas oxygen content is superimposed, to determine the fortune of the water supply system
Row load.
6. the feed pump RB controlling parties of supercritical circulating fluidized bed (CFB) boiler generating set according to claim 5
Method, which is characterized in that the control method further includes：
The turbine main control device of control steam turbine system switches to the turbine follow method of operation, and the turbine main control device is made to adjust vapour
The valve opening of turbine regulating valve, the sliding pressure curve when operation curve of main vapour pressure setting value being made to switch to feed pump RB.
7. the feed pump RB controlling parties of supercritical circulating fluidized bed (CFB) boiler generating set according to claim 6
Method, which is characterized in that the control method further includes：
The main vapour pressure setting value that sliding pressure curve during to by feed pump RB determines carries out inertial delay processing, change rate successively
Limitation is handled.
8. the feedwater of supercritical circulating fluidized bed (CFB) the boiler generating set according to any one of claim 5-7
Pump RB control methods, which is characterized in that the control method further includes：
Compare the current unit load and the second setting value, when the current unit load is less than second setting value,
Generating set is made to maintain coordination mode operation or stop under-capacity operation mode and restore extremely to maintain coordination mode operation.
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| CN201510977739.2A CN105627287B (en) | 2015-12-23 | 2015-12-23 | The feed pump RB control systems and method of Supercritical CFB Boiler generating set |
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| CN201510977739.2A CN105627287B (en) | 2015-12-23 | 2015-12-23 | The feed pump RB control systems and method of Supercritical CFB Boiler generating set |
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| CN106200704B (en) * | 2016-08-31 | 2019-05-21 | 广东电网有限责任公司电力科学研究院 | A kind of RB process main vapour pressure setting value operation method and system |
| CN106524119B (en) * | 2016-11-11 | 2019-02-01 | 华北电力科学研究院有限责任公司 | The control method and device of feedwater flow during runback |
| CN107314395B (en) * | 2017-07-11 | 2019-05-10 | 攀钢集团攀枝花钢钒有限公司 | The method of fast cutback under unit style generating set emergency situation |
| CN108170026A (en) * | 2017-10-22 | 2018-06-15 | 国网山西省电力公司电力科学研究院 | Supercritical generating sets main vapour pressure setting optimization system based on Model Distinguish |
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| CN114153239B (en) * | 2021-11-15 | 2023-09-15 | 国网山东省电力公司电力科学研究院 | RB sliding pressure instruction adjusting method and device based on unit load and computer equipment |
| CN114811570B (en) * | 2022-04-20 | 2023-06-13 | 华北电力科学研究院有限责任公司 | High-load-adding and disconnecting fault load-reducing method and device suitable for coal-fired unit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916492A (en) * | 2005-11-11 | 2007-02-21 | 南京科远控制工程有限公司 | Method for controlling optimized burning in circulating fluid bed boiler |
| JP2008069763A (en) * | 2006-09-11 | 2008-03-27 | Yoshio Sekine | Load setter follow-up boiler-turbine parallel control runback control system |
| CN101609327A (en) * | 2008-06-18 | 2009-12-23 | 浙江省电力试验研究院 | All-working-condition automatic RB control method |
| CN101788809A (en) * | 2009-08-17 | 2010-07-28 | 杭州和利时自动化有限公司 | Coordinated control system (CCS) of large-size circulating fluidized bed boiler (CFBB) unit |
-
2015
- 2015-12-23 CN CN201510977739.2A patent/CN105627287B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916492A (en) * | 2005-11-11 | 2007-02-21 | 南京科远控制工程有限公司 | Method for controlling optimized burning in circulating fluid bed boiler |
| JP2008069763A (en) * | 2006-09-11 | 2008-03-27 | Yoshio Sekine | Load setter follow-up boiler-turbine parallel control runback control system |
| CN101609327A (en) * | 2008-06-18 | 2009-12-23 | 浙江省电力试验研究院 | All-working-condition automatic RB control method |
| CN101788809A (en) * | 2009-08-17 | 2010-07-28 | 杭州和利时自动化有限公司 | Coordinated control system (CCS) of large-size circulating fluidized bed boiler (CFBB) unit |
Non-Patent Citations (2)
| Title |
|---|
| 600MW超临界CFB机组给水RB控制策略优化及功能试验;雷秀坚，吴玉平，陈锋，高明明;《中国电力》;20150705;第48卷(第7期);第4部分"给水RB试验"，第44-47页 * |
| 国产600MW超临界机组给水泵故障减负荷试验;赖加良，张睿，黄卫剑;《发电设备》;20080915(第5期);第1部分"给水泵RB的过程"，第438-441页 * |
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