CN107143844A - A kind of fired power generating unit control method and system based on condensate throttling - Google Patents
A kind of fired power generating unit control method and system based on condensate throttling Download PDFInfo
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- CN107143844A CN107143844A CN201710391205.0A CN201710391205A CN107143844A CN 107143844 A CN107143844 A CN 107143844A CN 201710391205 A CN201710391205 A CN 201710391205A CN 107143844 A CN107143844 A CN 107143844A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
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Abstract
The invention discloses a kind of fired power generating unit control method and system based on condensate throttling.Find that traditional thermoelectric generator set control system has the outstanding problem such as control delay and burning inertia problem in reality.Load Regulation scheme of the invention based on condensate throttling, using the varying duty control strategy of " full sliding pressure and regulation and control condensing water flow ", control condensing water flow quickly changes in a short time, in the range of water level regulation in oxygen-eliminating device and condenser, the size of valve port is adjusted to increase or decrease condensing water flow value, realize and the amount of drawing gas of steam turbine in low-pressure heater and oxygen-eliminating device is adjusted, and then obtain or discharge the load of a part of unit in short-term.Present invention improves over the service efficiency that tradition condenses water control system, in the saving pipe controlled of firepower unit generation factory, it can realize that larger energy-conservation produces economic benefit, with actual application value.
Description
Technical field
The present invention relates to dynamoelectric intelligent control technology field, specifically a kind of fired power generating unit based on condensate throttling
Control method and system.
Background technology
Generally, frequency conversion ability is the grid-connected pre-requisite abilities of generating set.It is the fast and stable of mains frequency, high-quality logical
Power technology could meet the requirement of mixing power network.In order to realize and meet the requirement of energization technology, traditional thermal power plant for
The fuel that the energy-conservation and Properties Control of thermal power generation unit rely primarily on control unit enters out to reach realization control unit load
Purpose.Find that conventional rack control system has the outstanding problem such as control delay and burning inertia problem in reality.Therefore not
Not think deeply new management and control technology to improve the operating efficiency of fired power generating unit.
Found in the grid-connected management of long-term power plant, the accumulation of heat for making full use of fired power generating unit to be produced in working can be well
Solve this problem.Therefore condensate throttling technology is arisen at the historic moment, requirement of the Siemens companies in 1992 in European countries' power network
Under, propose and employ condensate throttling technology to realize that unit load rapidly and effectively regulates and controls.
Existing use condensate throttling technology carries out unit load regulation and control and there is inefficiency, dams water level control not
In time.In addition regulating strategy, which is not enough improved, causes unit load overload, reduces the service life of equipment.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of fired power generating unit control based on improved condensate throttling
Method, its Load Regulation scheme based on condensate throttling is controlled using the varying duty of " full sliding pressure and regulation and control condensing water flow "
Strategy, it is possible to increase the efficiency of unit；Control condensing water flow quickly changes in a short time, in oxygen-eliminating device and condenser
In the range of water level regulation, adjust the size of valve port to increase or decrease condensing water flow value, realize to low-pressure heater and deoxygenation
The amount of the drawing gas regulation of steam turbine in device, and then the load of a part of unit is obtained or discharged in short-term.
Therefore, the present invention is adopted the following technical scheme that：A kind of fired power generating unit control method based on condensate throttling, bag
Include following steps：
Step 1), Optimal Control Strategy analysis
Step 11), on the basis of based on oxygen-eliminating device and condenser SEA LEVEL VARIATION, the aperture according to moisturizing regulating valve is adjusted
Save SEA LEVEL VARIATION；
Step 12), low-pressure heater drainage control system is improved, and then realize low-pressure heater in condensate throttling control
Steady control in system, improves the stability of system；
Step 13), the control of optimization unit load instruction realizes that the switch and bore flow of throttle orifice are controlled freely,
Ensure the safe operation of unit；
Step 2), according to quality and law of conservation of energy, build heat economy state equation
Step 21), build steam water distribution equation；
Step 22), constructing system take-off output equation；
Step 23), constructing system power input energy equation；
Step 3), condensate throttling power adjusting is calculated
Step 31), analysis oxygen-eliminating device imports and exports carbonated drink flowable state and enters the condensing water flow foundation of low-pressure heater
Mathematical modeling；
Further, step 21) in, described steam water distribution equation is as follows：
[A][Di]+[Qf]=D0[τi],
In formula, [Di] pass in and out steam flow moment matrix, Q for heaterfFor extra heating moment matrix, D0Taken out for heater is corresponding
Steam flow amount, wherein, [A] is sytem matrix, and the expression formula of [A] is：
Wherein：
qiFor the outlet entropy production of i-stage heater, qi=hi-hdiqiOr qi=hi-hw(i+1)；
hiFor the enthalpy that draws gas of i-stage heater；
τ is water inlet entropy production, τi=hwi-hw(i+1)；
γiFor the feed-water enthalpy rise of i-stage heater, γi=hd(i-1)-hw(i+1)Or γi=hd(i-1)-hdi；
hdiFor the hydrophobic enthalpy of i-stage heater；
hwiRepresent i-stage heater outlet enthalpy.
Further, step 22) in, described system dynamic power output equation is as follows：
N=D0(h0+σ-hc)-∑iDi(h0+σ-hc)-∑i+1Di(hi-hc)+Nf,
In above formula, D0Draw gas the corresponding porch of expression heater mass flow matrix, h0To be evacuated enthalpy at heater inlet
Value, σ is vapour enthalpy regulation parameter, hiRepresent the corresponding enthalpy that draws gas of i-stage heater, hcRepresent that i-stage heater is corresponding to damage
Consume vapour enthalpy；NfRepresent external work rate matrix, DiThe corresponding mass flow matrix that draws gas of i-stage heater is represented, N represents that unit holds
Amount.
Further, step 23) in, described system dynamic input energy equation is as follows：
Q=D0(h0+σ-hw9)+Qfr,
In above formula, Q is power input energy, hw9Represent the entrance enthalpy of the 8th grade of heater, QfrFor the energy that draws gas.
Further, step 31) in,
01# high-pressure heaters increase qm,1,h1：
(h1-hd1)D1=(hw1-hw2)Dfw,
02# high-pressure heaters increase qm,2,h2：
(hd1-hd2)D1+(h2-hd2)D2=(hw2-hw3)Dfw,
03# high-pressure heaters increase qm,3,h3：
(hd2-hd3)(D1+D2)+(h3-hd3)D3=(hw3-hw4)Dfw,
05# low-pressure heaters reduce qm,5,h5：
(h5-hd5)D5=(hw5-hw6)Dcw,
In above formula, DcwTo flow through the condensate mass flow of each low-pressure heater；
06# low-pressure heaters reduce qm,6,h6：
D5hd5+D6h6+Dcwhw7=(D5+D6)hd6+Dcwhw6,
07# low-pressure heaters reduce qm,7,h7：
(D5+D6)hd6+D7h7+Dcwhw8=(D5+D6+D7)hd7+Dcwhw7,
08# low-pressure heaters reduce qm,8,h8：
(D5+D6+D7)hd7+D8h8+Dcwhw9=(D5+D6+D7+D8)hd8+Dcwhw8；
In formula, hiRepresent the corresponding enthalpy that draws gas of i-stage heater, qm,iRepresent the quality stream of drawing gas of i-stage heater
Amount, hw1~hw8Represent the outlet enthalpy of the 1 to 8th grade of heater, hdiFor the hydrophobic enthalpy of i-stage heater, DfwTo flow through each height
Press the water supply flow of heater, h1Represent the corresponding enthalpy that draws gas of primary heater, DiRepresent that i-stage heater is corresponding to take out
Vapour mass flow matrix.
The expression matrix form of the amount of drawing gas before and after throttling to sum up is drawn according to corresponding relation：
In formula, k represents the multiple value of condensate.
Another technical scheme that the present invention is used is to provide the control system obtained using above-mentioned control method, comprising：
Optimal Control Strategy analysis module：On the basis of based on oxygen-eliminating device and condenser SEA LEVEL VARIATION, according to moisturizing
The aperture regulation SEA LEVEL VARIATION of regulating valve；Low-pressure heater drainage control system is improved, and then realizes low-pressure heater in condensation
Steady control in water throttle control system, improves the stability of system；Optimize the control of unit load instruction, realize choke valve
Switch and bore the flow control of mouth are freely, it is ensured that the safe operation of unit；
Heat economy state equation builds module：For building steam water distribution equation, constructing system take-off output equation,
And constructing system power input energy equation；
Condensate throttling power adjusting computing module：Analyze oxygen-eliminating device and import and export carbonated drink flowable state balance, set up mathematical modulo
Type；Analysis enters the condensing water flow of low-pressure heater.
The device have the advantages that being：Present invention improves over tradition condense water control system service efficiency,
In the saving pipe controlled of firepower unit generation factory, it can realize that larger energy-conservation produces economic benefit, with actual application value.
Brief description of the drawings
Fig. 1 be return before condensate throttling, heating system figure；
Schematic diagram when Fig. 2 is control system of the present invention；
Fig. 3 is the structurized module figure of control system of the present invention.
Embodiment
With reference to the accompanying drawings, the present invention is further illustrated.
Embodiment one
The present embodiment is a kind of fired power generating unit control method based on improved condensate throttling, is comprised the following steps：
Step 1, Optimal Control Strategy is analyzed
Step11 is on the basis of based on oxygen-eliminating device and condenser SEA LEVEL VARIATION, the aperture regulation according to moisturizing regulating valve
SEA LEVEL VARIATION.
Step12 improves low-pressure heater drainage control system, closely realizes that low-pressure heater controls to be in condensate throttling
Steady control in system, improves the stability of system.
The control of Step13 optimization unit load instructions realizes that the switch and bore flow of throttle orifice are controlled freely, it is ensured that
The safe operation of unit.
Step 2, according to quality and law of conservation of energy, heat economy state equation is set up
Step21 steam water distribution equations：
[A][Di]+[Qf]=D0[τi],
[Di] steam flow moment matrix is passed in and out for heater, wherein [A] is sytem matrix, the expression formula of [A] is：
Wherein：qiFor the outlet entropy production of i-stage heater, qi=hi-hdiqiOr qi=hi-hw(i+1)；hiFor i-stage plus
The enthalpy that draws gas of hot device；
τ is water inlet entropy production, τi=hwi-hw(i+1)；
γiFor the feed-water enthalpy rise of i-stage heater, γi=hd(i-1)-hw(i+1)Or γi=hd(i-1)-hdi；
hdiFor the hydrophobic enthalpy of i-stage heater；
hwiRepresent i-stage heater outlet enthalpy.
Step22 system dynamic power output equations：
N=D0(h0+σ-hc)-∑iDi(h0+σ-hc)-∑i+1Di(hi-hc)+Nf,
In above formula, D0Draw gas the corresponding porch of expression heater mass flow matrix, h0To be evacuated enthalpy at heater inlet
Value, σ is vapour enthalpy regulation parameter, hiRepresent the corresponding enthalpy that draws gas of i-stage heater, hcRepresent that i-stage heater is corresponding to damage
Consume vapour enthalpy；NfRepresent external work rate matrix, DiThe corresponding mass flow matrix that draws gas of i-stage heater is represented, N represents that unit holds
Amount.
Step23 system dynamic input energy equations：
Q=D0(h0+σ-hw9)+Qfr,
In above formula, Q is power input energy, hw9Represent the entrance enthalpy of the 8th grade of heater, QfrFor the energy that draws gas.
Step 3, condensate throttling power adjusting is calculated
Step31 analysis oxygen-eliminating devices import and export carbonated drink flowable state balance, founding mathematical models.
Step 31) in,
01# high-pressure heaters increase qm,1,h1：
(h1-hd1)D1=(hw1-hw2)Dfw,
02# high-pressure heaters increase qm,2,h2：
(hd1-hd2)D1+(h2-hd2)D2=(hw2-hw3)Dfw,
03# high-pressure heaters increase qm,3,h3：
(hd2-hd3)(D1+D2)+(h3-hd3)D3=(hw3-hw4)Dfw,
05# low-pressure heaters reduce qm,5,h5：
(h5-hd5)D5=(hw5-hw6)Dcw,
In above formula, DcwTo flow through the condensate mass flow of each low-pressure heater.
06# low-pressure heaters reduce qm,6,h6：
D5hd5+D6h6+Dcwhw7=(D5+D6)hd6+Dcwhw6,
07# low-pressure heaters reduce qm,7,h7：
(D5+D6)hd6+D7h7+Dcwhw8=(D5+D6+D7)hd7+Dcwhw7,
08# low-pressure heaters reduce qm,8,h8：
(D5+D6+D7)hd7+D8h8+Dcwhw9=(D5+D6+D7+D8)hd8+Dcwhw8；
In formula, hiRepresent the corresponding enthalpy that draws gas of i-stage heater, qm,iRepresent the quality stream of drawing gas of i-stage heater
Amount,；hw1~hw8Represent the outlet enthalpy of the 1 to 8th grade of heater, hdiFor the hydrophobic enthalpy of i-stage heater, DfwIt is each to flow through
The water supply flow of high-pressure heater, h1Represent the corresponding enthalpy that draws gas of primary heater, DiRepresent that i-stage heater is corresponding
Mass flow of drawing gas matrix.
The expression matrix form of the amount of drawing gas before and after throttling to sum up is drawn according to corresponding relation：
In formula, k represents the multiple value of condensate.
Embodiment two
The present embodiment is a kind of Control System for Thermal Power Units based on improved condensate throttling, comprising：
Optimal Control Strategy analysis module：On the basis of based on oxygen-eliminating device and condenser SEA LEVEL VARIATION, according to moisturizing
The aperture regulation SEA LEVEL VARIATION of regulating valve；Low-pressure heater drainage control system is improved, and then realizes low-pressure heater in condensation
Steady control in water throttle control system, improves the stability of system；Optimize the control of unit load instruction, realize choke valve
Switch and bore the flow control of mouth are freely, it is ensured that the safe operation of unit；
Heat economy state equation builds module：For building steam water distribution equation, constructing system take-off output equation,
And constructing system power input energy equation；
Condensate throttling power adjusting computing module：Analyze oxygen-eliminating device and import and export carbonated drink flowable state balance, set up mathematical modulo
Type；Analysis enters the condensing water flow of low-pressure heater.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
For a person skilled in the art, read after described above, various changes and modifications undoubtedly will be evident.
Therefore, appended claims should regard whole variations and modifications of the true intention and scope that cover the present invention as.In power
Any and all scope and content of equal value, are all considered as still belonging to the intent and scope of the invention in the range of sharp claim.
Claims (6)
1. a kind of fired power generating unit control method based on condensate throttling, comprises the following steps：
Step 1), Optimal Control Strategy analysis
Step 11), on the basis of based on oxygen-eliminating device and condenser SEA LEVEL VARIATION, the aperture regulation water according to moisturizing regulating valve
Position change；
Step 12), low-pressure heater drainage control system is improved, and then realize low-pressure heater in condensate throttling control system
In steady control, improve system stability；
Step 13), the control of optimization unit load instruction realizes that the switch and bore flow of throttle orifice are controlled freely, it is ensured that
The safe operation of unit；
Step 2), according to quality and law of conservation of energy, build heat economy state equation
Step 21), build steam water distribution equation；
Step 22), constructing system take-off output equation；
Step 23), constructing system power input energy equation；
Step 3), condensate throttling power adjusting is calculated
Step 31), analysis oxygen-eliminating device imports and exports carbonated drink flowable state balance, founding mathematical models；
Step 32), analysis enters the condensing water flow of low-pressure heater.
2. fired power generating unit control method according to claim 1, it is characterised in that step 21) in, described carbonated drink distribution
Equation is as follows：
[A][Di]+[Qf]=D0[τi],
In formula, [Di] pass in and out steam flow moment matrix, Q for heaterfFor extra heating moment matrix, D0For the corresponding stream that draws gas of heater
Amount, wherein [A] is sytem matrix, the expression formula of [A] is：
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Wherein：
qiFor the outlet entropy production of i-stage heater, qi=hi-hdiqiOr qi=hi-hw(i+1)；
hiFor the enthalpy that draws gas of i-stage heater；
τ is water inlet entropy production, τi=hwi-hw(i+1)；
iFor the feed-water enthalpy rise of i-stage heater, γi=hd(i-1)-hw(i+1)Or γi=hd(i-1)-hdi；
hdiFor the hydrophobic enthalpy of i-stage heater；
hwiRepresent i-stage heater outlet enthalpy.
3. fired power generating unit control method according to claim 2, it is characterised in that step 22) in, described system dynamic
Power output equation is as follows：
N=D0(h0+σ-hc)-∑iDi(h0+σ-hc)-∑i+1Di(hi-hc)+Nf,
In above formula, D0Draw gas the corresponding porch of expression heater mass flow matrix, h0To be evacuated enthalpy, σ at heater inlet
For vapour enthalpy regulation parameter, hiRepresent the corresponding enthalpy that draws gas of i-stage heater, hcRepresent the corresponding loss vapour of i-stage heater
Enthalpy；NfRepresent external work rate matrix, DiThe corresponding mass flow matrix that draws gas of i-stage heater is represented, N represents single-machine capacity.
4. fired power generating unit control method according to claim 3, it is characterised in that step 23) in, described system dynamic
Input energy equation is as follows：
Q=D0(h0+σ-hw9)+Qfr,
In above formula, Q is power input energy, hw9Represent the entrance enthalpy of the 8th grade of heater, QfrFor the energy that draws gas.
5. fired power generating unit control method according to claim 4, it is characterised in that step 31) in,
01# high-pressure heaters increase qm,1,h1：
(h1-hd1)D1=(hw1-hw2)Dfw,
02# high-pressure heaters increase qm,2,h2：
(hd1-hd2)D1+(h2-hd2)D2=(hw2-hw3)Dfw,
03# high-pressure heaters increase qm,3,h3：
(hd2-hd3)(D1+D2)+(h3-hd3)D3=(hw3-hw4)Dfw,
05# low-pressure heaters reduce qm,5,h5：
(h5-hd5)D5=(hw5-hw6)Dcw,
In above formula, DcwTo flow through the condensate mass flow of each low-pressure heater；
06# low-pressure heaters reduce qm,6,h6：
D5hd5+D6h6+Dcwhw7=(D5+D6)hd6+Dcwhw6,
07# low-pressure heaters reduce qm,7,h7：
(D5+D6)hd6+D7h7+Dcwhw8=(D5+D6+D7)hd7+Dcwhw7,
08# low-pressure heaters reduce qm,8,h8：
(D5+D6+D7)hd7+D8h8+Dcwhw9=(D5+D6+D7+D8)hd8+Dcwhw8；
In formula, hiRepresent the corresponding enthalpy that draws gas of i-stage heater, qm,iRepresent the mass flow of drawing gas of i-stage heater, hw1
~hw8Represent the outlet enthalpy of the 1 to 8th grade of heater, hdiFor the hydrophobic enthalpy of i-stage heater, DfwAdd to flow through each high pressure
The water supply flow of hot device, h1Represent the corresponding enthalpy that draws gas of primary heater, DiRepresent the corresponding matter of drawing gas of i-stage heater
Measure traffic matrix；
The expression matrix form of the amount of drawing gas before and after throttling to sum up is drawn according to corresponding relation：
<mrow>
<mfenced open = "[" close = "]">
<mtable>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>1</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>2</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>3</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>4</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>5</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>6</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>7</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>8</mn>
</msub>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>=</mo>
<mfenced open = "[" close = "]">
<mtable>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>1</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>2</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>3</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>D</mi>
<mn>5</mn>
</msub>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mi>k</mi>
<mo>)</mo>
<msub>
<mi>D</mi>
<mn>6</mn>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mi>k</mi>
<mo>)</mo>
<msub>
<mi>D</mi>
<mn>7</mn>
</msub>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<mi>k</mi>
<mo>)</mo>
<msub>
<mi>D</mi>
<mn>8</mn>
</msub>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>,</mo>
</mrow>
In formula, k represents the multiple value of condensate.
6. the system obtained using any one of the claim 1-5 fired power generating unit control method, it is characterised in that include：
Optimal Control Strategy analysis module：On the basis of based on oxygen-eliminating device and condenser SEA LEVEL VARIATION, according to moisturizing regulation
The aperture regulation SEA LEVEL VARIATION of valve；Low-pressure heater drainage control system is improved, and then realizes low-pressure heater in condensate section
Steady control in flow control system, improves the stability of system；Optimize the control of unit load instruction, realize throttle orifice
Switch and the control of bore flow are freely, it is ensured that the safe operation of unit；
Heat economy state equation builds module：For building steam water distribution equation, constructing system take-off output equation, and
Constructing system power input energy equation；
Condensate throttling power adjusting computing module：Analyze oxygen-eliminating device and import and export carbonated drink flowable state balance, founding mathematical models；Point
Analysis enters the condensing water flow of low-pressure heater.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893988A (en) * | 2017-10-13 | 2018-04-10 | 国网河北能源技术服务有限公司 | Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation |
| CN109857033A (en) * | 2019-02-28 | 2019-06-07 | 中国能源建设集团广东省电力设计研究院有限公司 | Condensate throttling switching control method, device and computer equipment |
| CN110288135A (en) * | 2019-06-10 | 2019-09-27 | 华北电力大学 | A kind of hydrophobic water level energy conservation optimizing method of hyperbaric heating system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995012A (en) * | 2009-08-14 | 2011-03-30 | 华东电力试验研究院有限公司 | Thermal power unit cooperative load change control method |
| CN103217946A (en) * | 2013-03-07 | 2013-07-24 | 上海外高桥第二发电有限责任公司 | Coordination variable load control method based on condensate pump frequency changer set |
| CN106368749A (en) * | 2016-09-14 | 2017-02-01 | 上海明华电力技术工程有限公司 | Primary frequency regulation load increase method of participation units through cutting low-pressure heaters from water side |
-
2017
- 2017-05-27 CN CN201710391205.0A patent/CN107143844A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995012A (en) * | 2009-08-14 | 2011-03-30 | 华东电力试验研究院有限公司 | Thermal power unit cooperative load change control method |
| CN103217946A (en) * | 2013-03-07 | 2013-07-24 | 上海外高桥第二发电有限责任公司 | Coordination variable load control method based on condensate pump frequency changer set |
| CN106368749A (en) * | 2016-09-14 | 2017-02-01 | 上海明华电力技术工程有限公司 | Primary frequency regulation load increase method of participation units through cutting low-pressure heaters from water side |
Non-Patent Citations (1)
| Title |
|---|
| 刘彧昕: "《热力发电机组凝结水节流负荷响应特性研究》", 《工程科技II辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893988A (en) * | 2017-10-13 | 2018-04-10 | 国网河北能源技术服务有限公司 | Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation |
| CN107893988B (en) * | 2017-10-13 | 2019-09-27 | 国网河北能源技术服务有限公司 | Heat regenerative system carbonated drink optimal control method under Large-scale fire-electricity unit depth peak regulation |
| CN109857033A (en) * | 2019-02-28 | 2019-06-07 | 中国能源建设集团广东省电力设计研究院有限公司 | Condensate throttling switching control method, device and computer equipment |
| CN109857033B (en) * | 2019-02-28 | 2020-10-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Condensate throttling switching control method and device and computer equipment |
| CN110288135A (en) * | 2019-06-10 | 2019-09-27 | 华北电力大学 | A kind of hydrophobic water level energy conservation optimizing method of hyperbaric heating system |
| CN110288135B (en) * | 2019-06-10 | 2022-10-18 | 华北电力大学 | Drainage water level energy-saving optimization method for high-pressure heating system |
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