CN108278134A - A kind of piping-main scheme direct current cooker generator group coordination control method - Google Patents
A kind of piping-main scheme direct current cooker generator group coordination control method Download PDFInfo
- Publication number
- CN108278134A CN108278134A CN201711465172.6A CN201711465172A CN108278134A CN 108278134 A CN108278134 A CN 108278134A CN 201711465172 A CN201711465172 A CN 201711465172A CN 108278134 A CN108278134 A CN 108278134A
- Authority
- CN
- China
- Prior art keywords
- steam turbine
- direct current
- pitch
- control
- current cooker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- 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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- 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
- F01D17/12—Final actuators arranged in stator parts
- F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
- F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
- F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Abstract
The invention discloses a kind of piping-main scheme direct current cooker generator group coordination control methods.This method includes more steam turbine control method for coordinating and direct current cooker control method for coordinating.More steam turbine control method for coordinating restrain matrix by establishing the Multivariable Decoupling Control fed back based on error, acquire main vapour pitch opening degree instruction μTHi, and middle pressure pitch opening degree instruction μ acquired by middle pressure pitch rating curve and the assignment of traffic desired value of steam turbine mesolow cylinderTLi, coordinate the flow of control steam turbine mesolow cylinder and steam turbine high pressure cylinder, realize that more steam turbines coordinate control.Direct current cooker control method for coordinating obtains combustion rate instruction μ by establishing the unity loop control rule fed back based on errorB, feedwater flow instruct μWμ is instructed with attemperation water flowAW, realize that the direct current cooker based on generating set load coordinates control operation.The method of the present invention is simple in structure, and hierarchical coordinative control adjusts fast and stable.
Description
Technical field
The present invention relates to a kind of piping-main scheme direct current cooker generator group coordination control methods, belong to generator set control technology
Field.
Background technology
According to National Energy Board " coal electricity energy-saving and emission-reduction upgrade with transformation action plan (2014-2020) " formulate target,
Active service Thermal generation unit must accelerate transformation and upgrade, and the average net coal consumption rate to the year two thousand twenty should be less than 310 grams/kilowatt hour.It will show
It is super (super-) critical direct current unit to use as a servant subcritical old Transformation of Unit, its thermodynamic cycle effect is substantially improved by increasing steam parameter
Rate is a kind of choice of technology for cost-effectively realizing coal unit energy-saving and emission-reduction.
For typical 2 × 300MW subcritical units unit, it transform two subcritical boilers as a suitable capacity
Super critical boiler, while two steam turbines are transformed and retained with former generating set, it realizes that the piping-main scheme of a furnace two-machine is super and faces
Boundary's direct current coal generating system has better economy compared to newly-built supercritical unit, thus the technology has well
Application foreground.But improved piping-main scheme supercritical DC system, with subcritical unit unit generation and overcritical unit
Unit generation is compared, system structure have it is dramatically different, improve operational flexibility while, between boiler and steam turbine, each steam turbine
Couple it is increasingly complex, therefore piping-main scheme direct current coal generating system coordination control become the technology application difficult point.
Previous piping-main scheme electricity generation system, mostly small-load generators, boiler are the drum boiler of Natural Circulation, more boilers and
Steam turbine is connected by main steam pipe, is not had steam reheat system, is mainly used in the fields such as power plant for self-supply and central heating,
Control requirement is not relatively high, and the main problem of operation control is the stabilization of main-piping pressure.
The control program of existing piping-main scheme dum boiler electricity generation system, is mainly used for the low capacity of power plant for self-supply and heat supply
Unit allocation, the key of control are that the load of each boiler is controlled by adjusting the fuel quantity of each boiler to maintain main pipe
Pressure it is steady.Due to each steam turbine and be not involved in dispatching of power netwoks, there is no need to the load of each steam turbine according to dispatching of power netwoks
Demand carry out Automatic Generation Control, in addition there is no reheated steam main pipe in system, thus be not related to it is middle pressure pitch adjustment.But
When Subcritical Units transform overcritical piping-main scheme unit as, since system is increasingly complex, and each steam turbine is both needed to participate in power grid tune
Degree, therefore more stringent requirements are proposed to its coordinated control system.
The unit of the control of existing direct current coal generating system, predominantly unit style configuration, i.e. a boiler match one
Steam turbine.Since unit style unit is free of main steam pipe and reheated steam main pipe, control program can not adapt to two
The case where what steam turbine paired running was brought is mutually coupled and interferes each other, and also do not adjust and press pitch in steam turbine, to nothing
Method meets the needs of load accurately adjusts.
Invention content
The present invention is directed to a kind of piping-main scheme direct current cooker generator group coordination control method, piping-main scheme direct current cooker power generations
Unit has steam reheat system, and more closely, control method for coordinating can be big in load for the coupling between steam turbine and boiler
The relatively minor swing and each steam turbine power that main vapour pressure is still ensured that when range quick smoothly track its load instruction,
In the case of each steam turbine participates in dispatching of power netwoks, the high request of spatial load forecasting can be met.
The invention is realized by the following technical scheme：
A kind of piping-main scheme direct current cooker generator group coordination control method is used for a kind of piping-main scheme direct current cooker generating set
Coordination control, the piping-main scheme direct current cooker generating set includes direct current cooker and generating set, the direct current cooker setting
It includes steam turbine high pressure cylinder, steam turbine mesolow cylinder and generator to have feed pump, evaporator and superheater, the generating set；It is described
Feed pump is connected with water supply pitch；Main steam line is equipped between the superheater and the steam turbine high pressure cylinder to connect；The vapour
Machine high pressure cylinder, steam turbine mesolow cylinder and generator are both provided with several, and the generator and the steam turbine high pressure cylinder and institute
Steam turbine mesolow cylinder is stated to be arranged in a one-to-one correspondence；Several described steam turbine high pressure cylinders and several described steam turbine mesolow cylinders difference
It is connected in parallel setting；It is provided with reheater between several described steam turbine high pressure cylinders and several described steam turbine mesolow cylinders；Institute
It states and is provided with main vapour pitch between steam turbine high pressure cylinder and the superheater, and the main vapour pitch and the steam turbine high pressure cylinder are one by one
It is correspondingly arranged；Be provided with middle pressure pitch between the steam turbine mesolow cylinder and the reheater, and medium pressure pitch with it is described
Steam turbine mesolow cylinder is arranged in a one-to-one correspondence；It is characterized in that, the control method for coordinating includes more steam turbine control method for coordinating, institute
Stating more steam turbine control method for coordinating includes：
Obtain the rating curve Q of each middle pressure pitchTLi=fcn1 (μTLi), wherein QTLiAnd μTLiRespectively pass through institute
The flow and pitch aperture of each middle pressure pitch are stated, i is to press pitch in i-th group；
Rating curve Q based on middle pressure pitchTLi=fcn1 (μTLi), carry out the flow of corresponding steam turbine mesolow cylinder
Distribution calculates, and obtains the assignment of traffic desired value Q of steam turbine mesolow cylinderRE,r,i；And according to the assignment of traffic mesh of steam turbine mesolow cylinder
Scale value utilizes functional relation QTLi=fcn1 (μTLi) calculate the corresponding middle middle pressure pitch opening degree instruction μ for pressing pitchTLi=fcn2
(QRE,r,i), the function fcn2 () is the inverse function of function fcn1 ()；
Obtain the setting value E of several generator loadsr,iWith measured value Ei, and obtain main vapour pressure setting value PT,r
With measured value PT, establish the Multivariable Decoupling Control fed back based on error and restrain matrix, Matrix Calculating is restrained according to Multivariable Decoupling Control
Winner vapour pitch opening degree instruction μTHi；
Pass through each middle pressure pitch opening degree instruction μTLiWith each main vapour pitch opening degree instruction μTHiCoordinate to control by several
The flow of a the steam turbine mesolow cylinder and steam turbine high pressure cylinder realizes that more steam turbines coordinate control.
In above-mentioned technical proposal, the control method for coordinating further includes direct current cooker control method for coordinating, the direct current pot
Stove control method for coordinating is coordinated to control more steam turbine operations and direct current cooker fortune together with more steam turbine control method for coordinating
Row；The direct current cooker control method for coordinating includes：
Obtain generating set total load setting value Er, according to combustion rate feedforward instruction functions μB0=fcn3 (Er) and to flow
Amount feedforward instruction functions μW0=fcn4 (Er) combustion rate feedforward instruction μ is obtained respectivelyB0It feedovers with feedwater flow and instructs μW0；
Obtain main vapour pressure setting value PT,r, Stream temperature degree setting value TS,rWith centrum's temperature setting value TM,r, and obtain master
Steam pressure measured value PT, Stream temperature degree measured value TSWith centrum's temperature measured value TM, establish the single loop control fed back based on error
System rule, and feedovered according to combustion rate and instruct μB0It feedovers with feedwater flow and instructs μW0With the functional relation μ restrained based on unity loop controlB
=μB0+ctrl1(PT,r-PT) and μW=μW0+ctrl3(TM,r-TM), combustion rate is obtained respectively instructs μBμ is instructed with feedwater flowW,
The water supply pitch of combustion position and feed pump to the direct current cooker carries out coordination control；Pass through Stream temperature degree setting value simultaneously
TS,rWith measured value TSDifference, based on unity loop control rule functional relation μAW=ctrl2 (TS,r-TS) obtain attemperation water flow
Instruct μAW, adjust the attemperation water flow of the direct current cooker, wherein ctrl1 (), ctrl2 () and ctrl3 () be based on
The unity loop control rule of error feedback.
In above-mentioned technical proposal, when the steam turbine high pressure cylinder, steam turbine mesolow cylinder and generator be respectively provided with there are two when, institute
Multivariable Decoupling Control rule matrix in generator group coordination control method is stated to select
Wherein, ctrl11, ctrl12, ctrl21, ctrl22 are respectively the unit control in Multivariable Decoupling Control rule matrix
System rule, μTH1、μTH2Respectively two main vapour pitch opening degree instructions, Er,1And Er,2The load setting value of respectively two generators,
E1And E2The load measurement value of respectively two generators.
In above-mentioned technical proposal, the function fcn1 () can be obtained by design data, or be surveyed by field experiment
.
In above-mentioned technical proposal, the function fcn3 () and fcn4 () can be obtained by design data, or be passed through
Field experiment measures.
The present invention has the following advantages and beneficial effects：Based on the thought of hierarchical coordinative control, fully piping-main scheme is realized simultaneously
Each steam turbine power generation power of connection is adjusted flexibly, and in fast and stable tracks the same of each Turbo-generator Set load instruction
When, the fluctuation of guarantee main vapour pressure and boiler parameter is in allowed limits；The control method for coordinating is simple in structure, is easy engineering
It realizes, is of great significance to the safe and stable operation of piping-main scheme direct current coal generating system.
Description of the drawings
Fig. 1 is that the piping-main scheme direct current cooker generator set control point of one of which embodiment according to the present invention is illustrated
Figure.
Fig. 2 is the piping-main scheme direct current cooker generator group coordination control system of one of which embodiment according to the present invention
System controlled device coupled relation schematic diagram.
Fig. 3 is the piping-main scheme direct current cooker generator group coordination control system of one of which embodiment according to the present invention
System logical construction schematic diagram.
In figure：1- water supply pitch；2- evaporators；3- superheaters；The main vapour pitch of 4-；5- steam turbine high pressure cylinders；6- is again
Hot device；Pitch is pressed in 7-；8- steam turbine mesolow cylinders；9- generators.
Specific implementation mode
The specific implementation mode and the course of work of the present invention are further described below in conjunction with the accompanying drawings.
The orientation such as upper, lower, left, right, front and rear in present specification term be position relationship based on ... shown in the drawings and
It establishes.Attached drawing is different, then corresponding position relationship is also possible to change therewith, therefore cannot be interpreted as with this to protecting model
The restriction enclosed.
A kind of piping-main scheme direct current cooker generator group coordination control method according to the present invention is used for as shown in Figure 1
A kind of coordination control of piping-main scheme direct current cooker generating set.Piping-main scheme direct current cooker generating set includes direct current cooker and power generation
Unit, usually direct current cooker connect two groups and generating set more than two.Direct current cooker is provided with feed pump, evaporator
2 and superheater 3, water direct current cooker heating surface is lifted by feed pump, passing through evaporator 2 and superheater 3 successively becomes
High temperature and high pressure steam is distributed by female steam pipe and enters multiple generating sets, is connected with steam turbine high pressure cylinder 5.Generating set includes
Steam turbine high pressure cylinder 5, steam turbine mesolow cylinder 8 and generator 9, wherein steam turbine high pressure cylinder 5 and steam turbine mesolow cylinder 8 are steam turbine.Vapour
It is provided with reheater 6 between machine high pressure cylinder and steam turbine mesolow cylinder.Feed pump is connected with water supply pitch 1, and pitch is control valve
Abbreviation, for adjusting feedwater flow.Steam turbine high pressure cylinder 5, steam turbine mesolow cylinder 8 and generator 9 are both provided with several, and institute
Generator 9 is stated to be arranged in a one-to-one correspondence with the steam turbine high pressure cylinder 5 and the steam turbine mesolow cylinder 8.That is steam turbine and generator
It is one-to-one multiple settings.Parallel connection connects respectively for several described steam turbine high pressure cylinders and several described steam turbine mesolow cylinders
Setting is connect, the steam turbine high pressure cylinder after parallel connection is connect with reheater main pipe.Main vapour is provided between steam turbine high pressure cylinder 5 and superheater 3
Pitch 4, and main vapour pitch 4 is arranged in a one-to-one correspondence with steam turbine high pressure cylinder 5.In being provided between steam turbine mesolow cylinder 8 and reheater 6
Pitch 7 is pressed, and middle pressure pitch 7 is arranged in a one-to-one correspondence with steam turbine mesolow cylinder 8.
A kind of piping-main scheme direct current cooker generator group coordination control method includes more steam turbine control method for coordinating and/or direct current
Boiler control method for coordinating is separately or concurrently coordinated to control more steam turbine operations and direct current cooker operation.
More steam turbine control method for coordinating include：
Obtain the rating curve Q of each middle pressure pitch 7TLi=fcn1 (μTLi), wherein QTLiAnd μTLiRespectively pass through
The flow and pitch aperture of each middle pressure pitch 7, i is that pitch 7 is pressed in i-th；
Rating curve Q based on middle pressure pitch 7TLi=fcn1 (μTLi), carry out the stream of corresponding steam turbine mesolow cylinder 8
Amount distribution calculates, and obtains the assignment of traffic desired value Q of steam turbine mesolow cylinder 8RE,r,i；And according to the flow of steam turbine mesolow cylinder 8 point
With desired value, Q is utilizedTLi=fcn1 (μTLi) calculate the corresponding middle middle pressure pitch opening degree instruction μ for pressing pitch 7TLi=fcn2
(QRE,r,i), the function fcn2 () is the inverse function of function fcn1 ()；
Obtain the setting value E of several generator loadsr,iWith measured value Ei, and obtain main vapour pressure setting value PT,r
With measured value PT, establish the Multivariable Decoupling Control fed back based on error and restrain matrix, Matrix Calculating is restrained according to Multivariable Decoupling Control
Winner vapour pitch opening degree instruction μTHi；
Pass through middle pressure pitch opening degree instruction μTLiWith main vapour pitch opening degree instruction μTHiCoordinate control and passes through several described vapour
The flow of machine mesolow cylinder and steam turbine high pressure cylinder realizes that more steam turbines coordinate control.
Direct current cooker control method for coordinating includes：
Obtain generating set total load setting value Er, according to combustion rate feedforward instruction functions μB0=fcn3 (Er) and to flow
Amount feedforward instruction functions μW0=fcn4 (Er) combustion rate feedforward instruction μ is obtained respectivelyB0It feedovers with feedwater flow and instructs μW0；
Obtain main vapour pressure setting value PT,r, Stream temperature degree setting value TS,rWith centrum's temperature setting value TM,r, and obtain master
Steam pressure measured value PT, Stream temperature degree measured value TSWith centrum's temperature measured value TM, establish the single loop control fed back based on error
System rule, and feedovered according to combustion rate and instruct μB0It feedovers with feedwater flow and instructs μW0With the functional relation μ restrained based on unity loop controlB
=μB0+ctrl1(PT,r-PT) and μW=μW0+ctrl3(TM,r-TM), combustion rate is obtained respectively instructs μBμ is instructed with feedwater flowW,
The water supply pitch 1 of combustion position and feed pump to the direct current cooker carries out coordination control；It is set simultaneously by Stream temperature degree
Value TS,rWith measured value TSDifference, based on unity loop control rule functional relation μAW=ctrl2 (TS,r-TS) obtain desuperheat flow
Amount instruction μAW, the attemperation water flow of the direct current cooker is adjusted, wherein ctrl1 (), ctrl2 () and ctrl3 () are base
In the unity loop control rule of error feedback.
When the steam turbine high pressure cylinder 5, steam turbine mesolow cylinder 8 and generator 9 be respectively provided with there are two when, generating set association
Multivariable Decoupling Control rule matrix is selected in control method
Wherein, ctrl11, ctrl12, ctrl21, ctrl22 are respectively the unit control in Multivariable Decoupling Control rule matrix
System rule.
The function fcn1 () can be obtained by design data, or be measured by field experiment.
The function fcn3 () and fcn4 () can be obtained by design data, or be measured by field experiment.
Direct current cooker control method for coordinating of the present invention is not to be based purely on the control of boiler itself, but be based on power generation
The corrdinated adjustment control of the boiler combustion status, confluent and spray water flux of unit load variation.
One of embodiment is two 300MW supercritical parameter steam turbines of a 600MW super critical boilers band.
According to design data, through curve matching, the rating curve for obtaining pressure pitch 7 in two steam turbines is：
Wherein μTL1And μTL2Pitch aperture, Q are pressed in respectively described two steam turbinesTL1And QTL1Respectively pass through described two
The flow of pitch is pressed in steam turbine.
If the setting value of two generator loads is respectively Er,1And Er,1, then the discharge characteristic song based on pressure pitch among the above
Line carries out the Flow Distribution Calculation of two steam turbine mesolow cylinders, obtains the assignment of traffic desired value of two steam turbine mesolow cylinders such as
Under：
According to the assignment of traffic desired value of above-mentioned steam turbine mesolow cylinder, the middle pressure pitch for calculating pressure pitch in two steam turbines is opened
Degree instruction μTL1=fcn2 (QRE,r,1), μTL2=fcn2 (QRE,r,2)。
According to the setting value E of two turbine generator loadsr,1And Er,1, 2 turbine generator loads measured value
E1And E2And main vapour pressure setting value PT,rWith measured value PT, establish the multivariable PID decoupling control fed back based on error and restrain square
Battle array restrains Matrix Calculating according to Multivariable Decoupling Control and obtains 2 steamer owner's vapour pitch opening degree instruction μTH1And μTH2It is as follows：
Wherein, COEFFICIENT Kp11,Ki11,Kd11For the control parameter of PID controller ctrl11, COEFFICIENT Kp12,Ki12,Kd12For PID
The control parameter of controller ctrl12, COEFFICIENT Kp21,Ki21,Kd21For the control parameter of PID controller ctrl21, COEFFICIENT Kp22,
Ki22,Kd22For the control parameter of PID controller ctrl22.Above-mentioned control parameter is obtained according to unit actual characteristic through field adjustable
.
Two Turbo-generator Sets of acquisition coordinate the main vapour pitch opening degree instruction of control as a result, and middle pressure pitch aperture refers to
It enables.
According to generating set total load setting value Er, obtain combustion rate feedforward instruction μB0It feedovers with feedwater flow and instructs μW0Such as
Under：
μB0=min (1.0, max (0.3,0.0018Er)),
μW0=min (1833, max (831,3.32Er))。
According to main vapour pressure setting value PT,rWith main vapour pressure measured value PT, establish the unity loop control fed back based on error
It restrains (by taking traditional PID control is restrained as an example), obtains combustion rate and instruct μBIt is as follows：
According to centrum's temperature setting value TM,rWith centrum's temperature measured value TM, establish the single loop fed back based on error
Control law (by taking traditional PID control is restrained as an example) obtains feedwater flow and instructs μWIt is as follows：
According to Stream temperature degree setting value TS,rWith measured value TS, establish the unity loop control fed back based on error and restrain (with tradition
For PID control rule), it obtains attemperation water flow and instructs μAWIt is as follows：
Wherein, COEFFICIENT Kp1,Ki1,Kd1For the control parameter of PID controller ctrl1, COEFFICIENT Kp2,Ki2,Kd2For PID controller
The control parameter of ctrl2, COEFFICIENT Kp3,Ki3,Kd3For the control parameter of PID controller ctrl3.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of piping-main scheme direct current cooker generator group coordination control method, for a kind of piping-main scheme direct current cooker generating set
Coordinate control, the piping-main scheme direct current cooker generating set includes direct current cooker and generating set, and the direct current cooker is provided with
Feed pump, evaporator (2) and superheater (3), the generating set include steam turbine high pressure cylinder (5), steam turbine mesolow cylinder (8) and hair
Motor (9)；The feed pump is connected with water supply pitch (1)；It is equipped between the superheater (3) and the steam turbine high pressure cylinder (5)
Main steam line connects；The steam turbine high pressure cylinder (5), steam turbine mesolow cylinder (8) and generator (9) are both provided with several, and
The generator (9) is arranged in a one-to-one correspondence with the steam turbine high pressure cylinder (5) and the steam turbine mesolow cylinder (8)；It is described several
A steam turbine high pressure cylinder and several described steam turbine mesolow cylinders are connected in parallel setting respectively；Several described steam turbine high pressure cylinders and institute
It states and is provided with reheater (6) between several steam turbine mesolow cylinders；Between the steam turbine high pressure cylinder (5) and the superheater (3)
It is provided with main vapour pitch (4), and the main vapour pitch (4) is arranged in a one-to-one correspondence with the steam turbine high pressure cylinder (5)；In the steam turbine
Middle pressure pitch (7) is provided between low pressure (LP) cylinder (5) and the reheater (6), and medium pressure pitch (7) is low with the steam turbine
Cylinder pressure (8) is arranged in a one-to-one correspondence；It is characterized in that, the control method for coordinating includes more steam turbine control method for coordinating, it is described more
Steam turbine control method for coordinating includes：
Obtain the rating curve Q of each middle pressure pitch (7)TLi=fcn1 (μTLi), wherein QTLiAnd μTLiIt is respectively logical
The flow and pitch aperture of medium pressure pitch (7) are crossed, i is pressure pitch (7) in i-th；
Rating curve Q based on middle pressure pitch (7)TLi=fcn1 (μTLi), carry out the stream of corresponding steam turbine mesolow cylinder (8)
Amount distribution calculates, and obtains the assignment of traffic desired value Q of the steam turbine mesolow cylinder (8)RE,r,i；And according to steam turbine mesolow cylinder (8)
Assignment of traffic desired value QRE,r,i, utilize functional relation QTLi=fcn1 (μTLi) calculate the corresponding middle middle pressure pitch for pressing pitch (7)
Opening degree instruction μTLi=fcn2 (QRE,r,i), the function fcn2 () is the inverse function of function fcn1 ()；
Obtain the setting value E of several generator loadsr,iWith measured value Ei, and obtain main vapour pressure setting value PT,rAnd reality
Measured value PT, establish the Multivariable Decoupling Control fed back based on error and restrain matrix, restraining Matrix Calculating according to Multivariable Decoupling Control obtains respectively
A main vapour pitch opening degree instruction μTHi；
Pass through each middle pressure pitch opening degree instruction μTLiWith each main vapour pitch opening degree instruction μTHiCoordinate control and passes through several institutes
The flow for stating steam turbine mesolow cylinder (8) and steam turbine high pressure cylinder (5) realizes that more steam turbines coordinate control.
2. a kind of piping-main scheme direct current cooker generator group coordination control method according to claim 1, which is characterized in that institute
It further includes direct current cooker control method for coordinating to state control method for coordinating, the direct current cooker control method for coordinating and more steam turbines
Control method for coordinating together, while being coordinated to control more steam turbine operations and direct current cooker operation；The direct current cooker coordinates controlling party
Method includes：
Obtain generating set total load setting value Er, according to combustion rate feedforward instruction functions μB0=fcn3 (Er) and feedwater flow before
Present instruction functions μW0=fcn4 (Er) combustion rate feedforward instruction μ is obtained respectivelyB0It feedovers with feedwater flow and instructs μW0；
Obtain main vapour pressure setting value PT,r, Stream temperature degree setting value TS,rWith centrum's temperature setting value TM,r, and obtain main vapour pressure
Power measured value PT, Stream temperature degree measured value TSWith centrum's temperature measured value TM, establish the unity loop control fed back based on error
Rule, and feedovered according to combustion rate and instruct μB0It feedovers with feedwater flow and instructs μW0With the functional relation μ restrained based on unity loop controlB=
μB0+ctrl1(PT,r-PT) and μW=μW0+ctrl3(TM,r-TM), combustion rate is obtained respectively instructs μBμ is instructed with feedwater flowW, right
The combustion position of the direct current cooker and the water supply pitch (1) of feed pump carry out coordination control；It is set simultaneously by Stream temperature degree
Value TS,rWith measured value TSDifference, based on unity loop control rule functional relation μAW=ctrl2 (TS,r-TS) obtain desuperheat flow
Amount instruction μAW, the attemperation water flow of the direct current cooker is adjusted, wherein ctrl1 (), ctrl2 () and ctrl3 () are base
In the unity loop control rule of error feedback.
3. a kind of piping-main scheme direct current cooker generator group coordination control method according to claim 1, it is characterised in that：When
The steam turbine high pressure cylinder (5), steam turbine mesolow cylinder (8) and generator (9) be respectively provided with there are two when, the generator group coordination control
Multivariable Decoupling Control rule matrix is selected in method processed
Wherein, ctrl11, ctrl12, ctrl21, ctrl22 are respectively the unit control law in Multivariable Decoupling Control rule matrix,
μTH1、μTH2Respectively two main vapour pitch opening degree instructions, Er,1And Er,2The load setting value of respectively two generators, E1And E2
The load measurement value of respectively two generators.
4. a kind of piping-main scheme direct current cooker generator group coordination control method according to claim 1, it is characterised in that：Institute
Stating function fcn1 () can be obtained by design data, or be measured by field experiment.
5. a kind of piping-main scheme direct current cooker generator group coordination control method according to claim 2, it is characterised in that：Institute
Stating function fcn3 () and fcn4 () can be obtained by design data, or be measured by field experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465172.6A CN108278134B (en) | 2017-12-28 | 2017-12-28 | Method for coordinately controlling generator set of main pipe direct-current boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465172.6A CN108278134B (en) | 2017-12-28 | 2017-12-28 | Method for coordinately controlling generator set of main pipe direct-current boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108278134A true CN108278134A (en) | 2018-07-13 |
| CN108278134B CN108278134B (en) | 2020-07-14 |
Family
ID=62802605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711465172.6A Active CN108278134B (en) | 2017-12-28 | 2017-12-28 | Method for coordinately controlling generator set of main pipe direct-current boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278134B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531719A (en) * | 2019-08-27 | 2019-12-03 | 赫普能源环境科技有限公司 | A kind of fired power generating unit coordinated control peak-frequency regulation system, apparatus and method |
| CN111538305A (en) * | 2020-05-26 | 2020-08-14 | 国网湖南省电力有限公司 | Thermal power generating unit water supply and fuel control intelligent optimization method, system and medium based on demand diagnosis |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212906A (en) * | 1997-01-31 | 1998-08-11 | Mitsubishi Heavy Ind Ltd | Flow control valve control system for steam turbine |
| CN101451709A (en) * | 2008-12-31 | 2009-06-10 | 柴庆宣 | Piping-main scheme boiler load coordinating control method |
| CN101871840A (en) * | 2010-07-12 | 2010-10-27 | 山东电力研究院 | Online test method for flow characteristics of turbine high-pressure governing valve |
| CN103513640A (en) * | 2013-10-11 | 2014-01-15 | 国家电网公司 | Integral optimization method and system for automatic power generation system of coal-fired unit |
| CN105697074A (en) * | 2016-02-03 | 2016-06-22 | 安徽新力电业科技咨询有限责任公司 | High-pressure control valve flow optimization device and method for turbine unit |
-
2017
- 2017-12-28 CN CN201711465172.6A patent/CN108278134B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10212906A (en) * | 1997-01-31 | 1998-08-11 | Mitsubishi Heavy Ind Ltd | Flow control valve control system for steam turbine |
| CN101451709A (en) * | 2008-12-31 | 2009-06-10 | 柴庆宣 | Piping-main scheme boiler load coordinating control method |
| CN101871840A (en) * | 2010-07-12 | 2010-10-27 | 山东电力研究院 | Online test method for flow characteristics of turbine high-pressure governing valve |
| CN103513640A (en) * | 2013-10-11 | 2014-01-15 | 国家电网公司 | Integral optimization method and system for automatic power generation system of coal-fired unit |
| CN105697074A (en) * | 2016-02-03 | 2016-06-22 | 安徽新力电业科技咨询有限责任公司 | High-pressure control valve flow optimization device and method for turbine unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531719A (en) * | 2019-08-27 | 2019-12-03 | 赫普能源环境科技有限公司 | A kind of fired power generating unit coordinated control peak-frequency regulation system, apparatus and method |
| CN110531719B (en) * | 2019-08-27 | 2020-09-08 | 赫普能源环境科技有限公司 | Thermal power generating unit coordinated control peak shaving frequency modulation system, equipment and method |
| CN111538305A (en) * | 2020-05-26 | 2020-08-14 | 国网湖南省电力有限公司 | Thermal power generating unit water supply and fuel control intelligent optimization method, system and medium based on demand diagnosis |
| CN111538305B (en) * | 2020-05-26 | 2021-04-30 | 国网湖南省电力有限公司 | Thermal power generating unit water supply and fuel control intelligent optimization method, system and medium based on demand diagnosis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108278134B (en) | 2020-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106527131A (en) | Model used for carrying out primary frequency modulation analysis coordination control on boiler, steam turbine and power grid | |
| CN106773681B (en) | Primary frequency modulation control optimization method for thermal power generating unit of drum boiler | |
| CN105372991B (en) | The more coal operating modes of thermal power plant unit overcome main steam pressure undulated control method | |
| CN105804809B (en) | Lifting unit AGC and primary frequency modulation quality a kind of device and method | |
| CN106094740A (en) | A kind of fired power generating unit duty control method based on superheater accumulation of heat feedforward | |
| CN206846684U (en) | A kind of liquid energy-storage system suitable for fired power generating unit depth peak regulation | |
| CN103499102B (en) | Method for directional control of fuel quantity of entering boiler of thermal generator set | |
| CN108443859A (en) | A kind of feedwater flow control method adapting to load rapid fluctuations | |
| CN108104890A (en) | A kind of steam supply heating system of depth thermoelectricity decoupling | |
| CN205503201U (en) | Promote device of unit AGC and primary control quality | |
| CN108227500A (en) | A kind of control method for coordinating and system of the quick peak regulation of fired power generating unit | |
| CN104864385B (en) | Method and device for calculating feed water flow instruction of supercritical unit | |
| CN109373347A (en) | A kind of coal-supplying amount optimal control method of unit bypass heat supply | |
| CN103513573B (en) | A kind of 300MW unit effectively stablizes the optimum controling method of main steam temperature | |
| CN102787870A (en) | Method for improving primary frequency modulation capacity of heat supply unit | |
| CN109378833B (en) | Method for realizing rapid frequency modulation of unit by controlling steam extraction amount of steam turbine | |
| CN110005488A (en) | A kind of high back pressure energy saving in heating system optimization method | |
| CN108278134A (en) | A kind of piping-main scheme direct current cooker generator group coordination control method | |
| CN112594667A (en) | System and method for adjusting reheat steam temperature of high-temperature ultrahigh-pressure reheat dry quenching boiler | |
| CN105202519A (en) | Frequency and peak load modulation all condition coordination control method of heat supply unit | |
| CN109578095A (en) | A kind of steam power plant's primary frequency control system | |
| CN107989665A (en) | The three side primary frequency modulation control methods and system of heat supply generating set | |
| CN105736071B (en) | 200MW thermal power plant unit management valve optimization method based on distribution way of steam switching | |
| CN110056858A (en) | A kind of fired power generating unit Heater Terminal Temperature Difference adaptive regulation method and device | |
| CN106122938A (en) | A kind of can the double reheat system of power station boiler of homoiothermic flexibly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |