CN110242978A - The method for controlling frequency conversion and device of fired power generating unit pressure fan - Google Patents
The method for controlling frequency conversion and device of fired power generating unit pressure fan Download PDFInfo
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- CN110242978A CN110242978A CN201910517987.7A CN201910517987A CN110242978A CN 110242978 A CN110242978 A CN 110242978A CN 201910517987 A CN201910517987 A CN 201910517987A CN 110242978 A CN110242978 A CN 110242978A
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- pressure fan
- frequency
- control logic
- logic
- control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/002—Regulating air supply or draught using electronic means
Abstract
The present invention provides the method for controlling frequency conversion and device of a kind of fired power generating unit pressure fan, this method comprises: adding the signal for carrying out frequency control to pressure fan in the automatic control logic of pressure fan to be controlled；Obtain the entrance regulating fender control logic of pressure fan；By input and output connection signal, the tag name of control station and exception report in modification entrance regulating fender control logic, entrance regulating fender control logic is revised as frequency control logic；The quick load shedding RB logic of auxiliary machinery fault is added in frequency control logic, obtains target frequency control logic.Through the invention, it solves the problems, such as that the frequency control logic configuration method of fired power generating unit pressure fan in the related technology is complicated, configuration effect difference is big, configuration is inefficient, reaches the frequency control combination flow process for improving fired power generating unit pressure fan, rapid and reliable accurate effect.
Description
Technical field
The present invention relates to computer fields, a kind of method for controlling frequency conversion in particular to fired power generating unit pressure fan and
Device.
Background technique
Air-supply currently, domestic scattered control system uses the fired power generating unit of ABB configuration software, when pressure fan Frequency Conversion Modification
The not formed More General Form of frequency control Logical Configuration, configuration are complicated, and technical staff's level is inconsistent, the configuration difference write compared with
Greatly.
The problem of being primarily present has: the mode of winning the confidence of power frequency component is single, influences power frequency, the reliability of frequency variation signal.Quilt
Tune amount signal processing is unreasonable, influences the reliability of regulated variable.The design of given value is different, influence given value it is quick, accurate,
Reliably.It is not perfect to cut manual condition, the design of override trace logic, influences automatic control system troubleshooting capability.Because of technique
Process difference, RB logic optimization content is not perfect, influences reliability and accuracy that RB function correctly acts.
For above-mentioned problem, the solution of effective procedure is not yet proposed at present.
Summary of the invention
The embodiment of the invention provides the method for controlling frequency conversion and device of a kind of fired power generating unit pressure fan, at least to solve phase
The frequency control logic configuration method of fired power generating unit pressure fan is complicated in the technology of pass, configuration effect difference is big, configuration is inefficient
The problem of.
According to one embodiment of present invention, a kind of method for controlling frequency conversion of fired power generating unit pressure fan is provided, comprising:
The letter for carrying out frequency control to the pressure fan is added in the automatic control logic of pressure fan to be controlled
Number, wherein the signal for carrying out frequency control to the pressure fan includes: frequency converter rotary speed instruction, frequency converter revolving speed
Feedback and power frequency component；
Obtain the entrance regulating fender control logic of the pressure fan；
By modifying input and output connection signal, control station and exception report in the entrance regulating fender control logic
Tag name, the entrance regulating fender control logic is revised as frequency control logic；
The quick load shedding RB logic of auxiliary machinery fault is added in the frequency control logic, is obtained target frequency control and is patrolled
Volume, wherein the target frequency control logic is used to carry out frequency conversion rotating speed control to the pressure fan.
Optionally, the control loop of the target frequency control logic meets following control condition:
The side A, B (or left and right side) air output signal of the pressure fan is all made of to be handled by temperature, pressure signal compensation
Signal afterwards；
The air output of the pressure fan is controlled by dual frequency converter revolving speed, the given value of the air output is controlled by oxygen amount PID
Output calibration unit load in circuit processed give UNITD conversion air quantity formed automatically give value with it is manual bias and true
It is fixed；
The air output PID of the pressure fan automatically controls output order and passes through frequency converter revolving speed equilibrium assignmen logic, by institute
It states air output PID automatic control output order and distributes to two frequency converter revolving speed control stations, two frequency converter revolving speed control station roots
Output order control frequency converter revolving speed is automatically controlled according to the air output PID being assigned to；
The oxygen amount given value of the oxygen amount pid control circuit of the pressure fan is obtained automatic by the oxygen amount that main steam flow is converted
Given value and manual bias determine.
Optionally, in the case where the target frequency control logic meets following either condition, by the target frequency conversion
Control logic switches to the state of manually controlling by automatic control state:
Regulated variable abnormal signal in the target frequency control logic；
The deviation between regulated variable and given value in the target frequency control logic is greater than the first deviation, and RB is not sent out
It is raw；
Deviation between frequency converter rotary speed instruction and actual speed is greater than the second deviation, and RB does not occur；
The pressure fan is run under power frequency mode；
Unilateral side tripping blower RB.
Optionally, the override tracking condition of the control station includes the following conditions, when meeting following either condition, is occurred super
It speeds to track:
Unilateral pressure fan trips RB, and tripping pressure fan frequency conversion instruction is minimized limit value；
The pressure fan is run under conversion system, and when air-introduced machine RB, pressure fan frequency converter rotary speed instruction override is down to
The override time is set the object time by target value；
When unilateral pressure fan frequency converter is run under manual mode, and other side pressure fan tripping RB occurs, pass through override
Tracking doubles the pressure fan frequency converter power output of operation.
Optionally, the mode of winning the confidence of the power frequency component includes at least one of:
In blower sequence logic and frequency converter revolving speed control logic in the case where same controller, the power frequency component
Using single point signals；
In blower sequence logic and frequency converter revolving speed control logic in different controllers, the power frequency component is first sent to suitable
Controller is controlled, then is communicated to adjusting controller, in addition, sending hardwire point power frequency all the way again from pressure fan frequency converter electrical wiring cabinet
Communication point and hardwire point phase or the rear power frequency component that formed are used in the adjusting controller by signal to adjusting controller
Logic control.
Optionally, the RB logic includes the following conditions:
Pressure fan RB occurs, the pressure fan frequency converter revolving speed to trip is down to the first revolving speed, trips described
The control mode of pressure fan switches to manual mode, and the pressure fan frequency converter revolving speed not tripped doubles；
When newly-increased air-introduced machine RB, when pressure fan is run under conversion system, pressure fan frequency conversion rotating speed is down to the second revolving speed, root
Determine whether to switch to manual control mode according to the service requirement of pressure fan unit；
When air-introduced machine RB, pressure fan frequency converter revolving speed still at automatic position, increases closing for automatic control after override reduction
Lock increases logic；
When newly-increased primary air fan RB movement, determined whether according to the service requirement of pressure fan unit by pressure fan frequency converter
Control mode switches to manual mode；
When unilateral pressure fan frequency converter is under manual mode, and other side pressure fan tripping RB occurs, override tracking makes to transport
Capable pressure fan frequency converter power output doubles.
Optionally, before obtaining target frequency control logic, the method also includes:
Regulated variable signal processing logic is added in the frequency control logic being added to after the RB logic, obtains the mesh
Mark frequency control logic；
Wherein, the regulated variable signal processing logic includes:
First air output and the second air output are respectively adopted in the taking of air volume signal of three tunnels after temperature pressure compensation
Between value handle, by the corresponding median of the first air output median corresponding with the second air output is added as blow PID adjusted
Amount；
Three road signals, which are respectively adopted, to the first oxygen signal and the second oxygen signal takes median to handle, and the first oxygen amount is believed
Number corresponding median median corresponding with the second oxygen signal is added the regulated variable being averaged to as oxygen amount PID.
According to another embodiment of the invention, a kind of frequency-converting control device of fired power generating unit pressure fan is provided, comprising:
First adding module, for adding in the automatic control logic of pressure fan to be controlled for the pressure fan
Carry out the signal of frequency control, wherein the signal for carrying out frequency control to the pressure fan includes: frequency converter revolving speed
Instruction, frequency converter speed feedback and power frequency component；
Module is obtained, for obtaining the entrance regulating fender control logic of the pressure fan；
Modified module, for by modifying the input and output connection signal in the entrance regulating fender control logic, control
The tag name at system station and exception report, is revised as frequency control logic for the entrance regulating fender control logic；
Second adding module is obtained for adding the quick load shedding RB logic of auxiliary machinery fault in the frequency control logic
To target frequency control logic, wherein the target frequency control logic is used to carry out frequency conversion rotating speed control to the pressure fan.
According to still another embodiment of the invention, a kind of storage medium is additionally provided, meter is stored in the storage medium
Calculation machine program, wherein the computer program is arranged to execute the step in any of the above-described embodiment of the method when operation.
According to still another embodiment of the invention, a kind of electronic device, including memory and processor are additionally provided, it is described
Computer program is stored in memory, the processor is arranged to run the computer program to execute any of the above-described
Step in embodiment of the method.
Through the invention, by adding in the automatic control logic of pressure fan to be controlled for becoming to pressure fan
The signal of frequency control, wherein the signal for carrying out frequency control to pressure fan includes: frequency converter rotary speed instruction, frequency converter turn
Speed feedback and power frequency component；Obtain the entrance regulating fender control logic of pressure fan；It is patrolled by modification entrance regulating fender control
Input and output connection signal, the tag name of control station and exception report in volume, entrance regulating fender control logic is revised as
Frequency control logic；The quick load shedding RB logic of auxiliary machinery fault is added in frequency control logic, is obtained target frequency control and is patrolled
Volume, wherein target frequency control logic is used to carry out pressure fan the mode of frequency conversion rotating speed control, can be all decentralised control systems
System uses the unit of ABB configuration software, provides and is applicable in convenient configuration model, realizes that pressure fan frequency conversion rotating speed automatically controls, protects
It demonstrate,proves unit blasting air amount and oxygen amount meets control and requires.When air-supply Frequency Conversion Modification, based on the basis of entrance regulating fender control logic
Procedure optimization configuration.When unit operates normally, after pressure fan frequency conversion rotating speed control loop investment is automatic, may be implemented
The automatic control of pressure fan improves unit automation level and economy.Therefore, it can solve fired power generating unit in the related technology to send
The problem that the frequency control logic configuration method of blower is complicated, configuration effect difference is big, configuration is inefficient, reaches raising thermoelectricity
The frequency control combination flow process of unit blasting air machine, rapid and reliable accurate effect.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of hardware knot of the mobile terminal of the method for controlling frequency conversion of fired power generating unit pressure fan of the embodiment of the present invention
Structure block diagram；
Fig. 2 is the flow chart of the method for controlling frequency conversion of fired power generating unit pressure fan according to an embodiment of the present invention；
Fig. 3 is the structural block diagram of the frequency-converting control device of fired power generating unit pressure fan according to an embodiment of the present invention；
Fig. 4 is the schematic diagram of the method for controlling frequency conversion of the fired power generating unit pressure fan of alternative embodiment according to the present invention；
Fig. 5 is that the air output of alternative embodiment according to the present invention automatically gives the schematic diagram that value forms logical model；
Fig. 6 is the schematic diagram of the pressure fan frequency control loop model of alternative embodiment according to the present invention；
Fig. 7 is the schematic diagram of the pressure fan A frequency conversion control station override trace logic model of alternative embodiment according to the present invention；
Fig. 8 is the schematic diagram of the pressure fan B frequency conversion control station override trace logic model of alternative embodiment according to the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
Embodiment of the method provided by the embodiment of the present application one can be in mobile terminal, terminal or similar fortune
It calculates and is executed in device.For running on mobile terminals, Fig. 1 is a kind of change of fired power generating unit pressure fan of the embodiment of the present invention
The hardware block diagram of the mobile terminal of frequency control method.As shown in Figure 1, mobile terminal 10 may include one or more (Fig. 1
In only show one) (processor 102 can include but is not limited to Micro-processor MCV or programmable logic device to processor 102
The processing unit of FPGA etc.) and memory 104 for storing data, optionally, above-mentioned mobile terminal can also include being used for
The transmission device 106 and input-output equipment 108 of communication function.It will appreciated by the skilled person that shown in FIG. 1
Structure is only to illustrate, and does not cause to limit to the structure of above-mentioned mobile terminal.For example, mobile terminal 10, which may also include, compares Fig. 1
Shown in more perhaps less component or with the configuration different from shown in Fig. 1.
Memory 104 can be used for storing computer program, for example, the software program and module of application software, such as this hair
The corresponding computer program of method for controlling frequency conversion of fired power generating unit pressure fan in bright embodiment, processor 102 are deposited by operation
The computer program stored up in memory 104 realizes above-mentioned side thereby executing various function application and data processing
Method.Memory 104 may include high speed random access memory, may also include nonvolatile memory, as one or more magnetism is deposited
Storage device, flash memory or other non-volatile solid state memories.In some instances, memory 104 can further comprise opposite
In the remotely located memory of processor 102, these remote memories can pass through network connection to mobile terminal 10.Above-mentioned net
The example of network includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
Transmitting device 106 is used to that data to be received or sent via a network.Above-mentioned network specific example may include
The wireless network that the communication providers of mobile terminal 10 provide.In an example, transmitting device 106 includes a Network adaptation
Device (Network Interface Controller, referred to as NIC), can be connected by base station with other network equipments to
It can be communicated with internet.In an example, transmitting device 106 can for radio frequency (Radio Frequency, referred to as
RF) module is used to wirelessly be communicated with internet.
A kind of method for controlling frequency conversion of fired power generating unit pressure fan is provided in the present embodiment, and Fig. 2 is real according to the present invention
The flow chart of the method for controlling frequency conversion of the fired power generating unit pressure fan of example is applied, as shown in Fig. 2, the process includes the following steps:
Step S202, addition is for carrying out frequency control to pressure fan in the automatic control logic of pressure fan to be controlled
Signal, wherein for pressure fan carry out frequency control signal include: frequency converter rotary speed instruction, frequency converter speed feedback
And power frequency component；
Step S204 obtains the entrance regulating fender control logic of pressure fan；
Step S206 passes through input and output connection signal, control station and the example in modification entrance regulating fender control logic
Entrance regulating fender control logic is revised as frequency control logic by the tag name of outer report；
Step S208 adds the quick load shedding RB logic of auxiliary machinery fault in frequency control logic, obtains target frequency conversion control
Logic processed, wherein target frequency control logic is used to carry out frequency conversion rotating speed control to pressure fan.
Through the above steps, the unit that ABB configuration software can be used for all scattered control systems, provides and is applicable in easily
Configuration model realizes that pressure fan frequency conversion rotating speed automatically controls, and guarantees that unit blasting air amount and oxygen amount meet control and require.Air-supply frequency conversion
When transformation, the optimization configuration based on the procedure on the basis of air blower inlet regulating fender control logic.It is operated normally in unit
When, after pressure fan frequency conversion rotating speed control loop investment is automatic, the automatic control of pressure fan may be implemented, improve unit automation water
Gentle economy.Therefore, frequency control logic configuration method complexity, the group of fired power generating unit pressure fan in the related technology be can solve
The problem that state effect difference is big, configuration is inefficient reaches the frequency control combination flow process, fast for improving fired power generating unit pressure fan
Speedization and reliable accurate effect.
Optionally, the control loop of target frequency control logic meets following control condition:
The side A, B (or left and right side) air output signal of condition one, pressure fan is all made of by temperature, pressure signal compensation
Signal after reason；
Condition two controls the air output of pressure fan by dual frequency converter revolving speed, and the given value of air output is by oxygen amount PID control
It is what the air quantity that circuit output calibration unit load gives UNITD conversion was formed automatically give value and manual bias and determining；
Condition three, the air output PID of pressure fan automatically control output order and pass through frequency converter revolving speed equilibrium assignmen logic, will
Air output PID automatically controls output order and distributes to two frequency converter revolving speed control stations, two frequency converter revolving speed control stations according to
The air output PID being assigned to automatically controls output order control frequency converter revolving speed；
Condition four, what the oxygen amount given value of the oxygen amount pid control circuit of pressure fan was obtained by the oxygen amount that main steam flow is converted
It automatically gives value and manual bias determines.
Optionally, in the case where target frequency control logic meets following either condition, by target frequency control logic
The state of manually controlling is switched to by automatic control state:
Condition 1, the regulated variable abnormal signal in target frequency control logic；
Condition 2, the deviation between regulated variable and given value in target frequency control logic is greater than the first deviation, and RB is not
Occur；
Condition 3, the deviation between frequency converter rotary speed instruction and actual speed is greater than the second deviation, and RB does not occur；
Condition 4, pressure fan are run under power frequency mode；
Condition 5, unilateral side tripping blower RB.
Optionally, the override tracking condition of control station includes the following conditions, when meeting following either condition, occur override with
Track:
Condition A, unilateral pressure fan trip RB, and tripping pressure fan frequency conversion instruction is minimized limit value；
Condition B, pressure fan are run under conversion system, and when air-introduced machine RB, pressure fan frequency converter rotary speed instruction override is dropped
To target value, the object time is set by the override time；
Condition C is led to when unilateral pressure fan frequency converter is run under manual mode, and other side pressure fan tripping RB occurs
Crossing override tracking doubles the pressure fan frequency converter power output of operation.
Optionally, the mode of winning the confidence of power frequency component includes at least one of:
Mode one, in blower sequence logic and frequency converter revolving speed control logic in the case where same controller, power frequency
Signal uses single point signals；
Mode two, in blower sequence logic and frequency converter revolving speed control logic in the case where different controllers, by power frequency
Signal is first sent to sequence controller, then is communicated to adjusting controller, in addition, sending again all the way from pressure fan frequency converter electrical wiring cabinet
Hardwire point power frequency component is to adjusting controller, in the adjusting controller, by communication point and hardwire point phase or rear formation
Power frequency component is used for logic control.
Optionally, RB logic includes the following conditions:
Condition one, pressure fan RB occur, and the pressure fan frequency converter revolving speed to trip is down to the first revolving speed, will trip
The control mode of pressure fan switch to manual mode, the pressure fan frequency converter revolving speed not tripped doubles；
Condition two, when increasing air-introduced machine RB newly, when pressure fan is run under conversion system, pressure fan frequency conversion rotating speed is down to second
Revolving speed determines whether to switch to manual control mode according to the service requirement of pressure fan unit；
Condition three, when air-introduced machine RB, pressure fan frequency converter revolving speed is after override reduction, still at automatic position, increases automatic
The block increase logic of control；
Condition four determines whether according to the service requirement of pressure fan unit by pressure fan when increasing primary air fan RB movement newly
The control mode of frequency converter switches to manual mode；
Condition five, when unilateral pressure fan frequency converter is under manual mode, other side pressure fan trips RB when occurring, override with
Track doubles the pressure fan frequency converter power output of operation.
Optionally, it in above-mentioned steps S208, before obtaining target frequency control logic, can also be patrolled being added to RB
Regulated variable signal processing logic is added in frequency control logic after volume, obtains target frequency control logic；
Wherein, regulated variable signal processing logic includes:
Air volume signal of three tunnels after temperature pressure compensation is respectively adopted to the first air output and the second air output in logic 1
Take median to handle, by the corresponding median of the first air output median corresponding with the second air output be added as air-supply
PID regulated variable；
Logic 2 is respectively adopted three road signals to the first oxygen signal and the second oxygen signal and median is taken to handle, by first
The corresponding median of oxygen signal median corresponding with the second oxygen signal, which is added, to be averaged to being adjusted as oxygen amount PID
Amount.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but it is very much
In the case of the former be more preferably embodiment.Based on this understanding, technical solution of the present invention is substantially in other words to existing
The part that technology contributes can be embodied in the form of software products, which is stored in a storage
In medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, calculate
Machine, server or network equipment etc.) execute method described in each embodiment of the present invention.
A kind of frequency-converting control device of fired power generating unit pressure fan is additionally provided in the present embodiment, and the device is for realizing upper
Embodiment and preferred embodiment are stated, the descriptions that have already been made will not be repeated.As used below, term " module " can be with
Realize the combination of the software and/or hardware of predetermined function.Although device described in following embodiment is preferably come with software real
It is existing, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.
Fig. 3 is the structural block diagram of the frequency-converting control device of fired power generating unit pressure fan according to an embodiment of the present invention, such as Fig. 3 institute
Show, which includes:
First adding module 32, in the automatic control logic of pressure fan to be controlled addition for pressure fan into
The signal of row frequency control, wherein the signal for carrying out frequency control to pressure fan includes: frequency converter rotary speed instruction, frequency conversion
Device speed feedback and power frequency component；
Module 34 is obtained, for obtaining the entrance regulating fender control logic of pressure fan；
Modified module 36, for passing through the input and output connection signal in modification entrance regulating fender control logic, control
It stands and the tag name of exception report, entrance regulating fender control logic is revised as frequency control logic；
Second adding module 38 is obtained for adding the quick load shedding RB logic of auxiliary machinery fault in frequency control logic
Target frequency control logic, wherein target frequency control logic is used to carry out frequency conversion rotating speed control to pressure fan.
Optionally, the control loop of target frequency control logic meets following control condition:
The side A, B (or left and right side) air output signal of pressure fan is all made of that treated by temperature, pressure signal compensation
Signal；
The air output of pressure fan is controlled by dual frequency converter revolving speed, the given value of air output is defeated by oxygen amount pid control circuit
It is what the air quantity that correction unit load gives UNITD conversion out was formed automatically give value and manual bias and determining；
The air output PID of pressure fan automatically controls output order and passes through frequency converter revolving speed equilibrium assignmen logic, by air output
PID automatically controls output order and distributes to two frequency converter revolving speed control stations, and two frequency converter revolving speed control stations are according to being assigned to
Air output PID automatically control output order control frequency converter revolving speed；
The oxygen amount given value of the oxygen amount pid control circuit of pressure fan is automatically given by what the oxygen amount that main steam flow is converted obtained
Value is determined with manual bias.
Optionally, above-mentioned apparatus is also used to: in the case where target frequency control logic meets following either condition, by mesh
It marks frequency control logic and the state of manually controlling is switched to by automatic control state:
Regulated variable abnormal signal in target frequency control logic；
The deviation between regulated variable and given value in target frequency control logic is greater than the first deviation, and RB does not occur；
Deviation between frequency converter rotary speed instruction and actual speed is greater than the second deviation, and RB does not occur；
Pressure fan is run under power frequency mode；
Unilateral side tripping blower RB.
Optionally, the override tracking condition of control station includes the following conditions, when meeting following either condition, occur override with
Track:
Unilateral pressure fan trips RB, and tripping pressure fan frequency conversion instruction is minimized limit value；
Pressure fan is run under conversion system, and when air-introduced machine RB, pressure fan frequency converter rotary speed instruction override is down to target
Value, sets the object time for the override time；
When unilateral pressure fan frequency converter is run under manual mode, and other side pressure fan tripping RB occurs, pass through override
Tracking doubles the pressure fan frequency converter power output of operation.
Optionally, the mode of winning the confidence of power frequency component includes at least one of:
In blower sequence logic and frequency converter revolving speed control logic in the case where same controller, power frequency component is used
Single point signals；
In blower sequence logic and frequency converter revolving speed control logic in the case where different controllers, by the power frequency component
It first send to sequence controller, then communicates to adjusting controller, connect firmly all the way in addition, being sent again from pressure fan frequency converter electrical wiring cabinet
Line point power frequency component is to adjusting controller, in the adjusting controller, will communication point and hardwire point phase or after form power frequency
Signal is used for logic control.
Optionally, RB logic includes the following conditions:
Pressure fan RB occurs, and the pressure fan frequency converter revolving speed to trip is down to the first revolving speed, the air-supply that will be tripped
The control mode of machine switches to manual mode, and the pressure fan frequency converter revolving speed not tripped doubles；
When newly-increased air-introduced machine RB, when pressure fan is run under conversion system, pressure fan frequency conversion rotating speed is down to the second revolving speed, root
Determine whether to switch to manual control mode according to the service requirement of pressure fan unit；
When air-introduced machine RB, pressure fan frequency converter revolving speed still at automatic position, increases closing for automatic control after override reduction
Lock increases logic；
When newly-increased primary air fan RB movement, determined whether according to the service requirement of pressure fan unit by pressure fan frequency converter
Control mode switches to manual mode；
When unilateral pressure fan frequency converter is under manual mode, and other side pressure fan tripping RB occurs, override tracking makes to transport
Capable pressure fan frequency converter power output doubles.
Optionally, described device further include: third adding module, for before obtaining target frequency control logic,
Regulated variable signal processing logic is added in frequency control logic after being added to RB logic, obtains target frequency control logic；
Wherein, regulated variable signal processing logic includes:
First air output and the second air output are respectively adopted in the taking of air volume signal of three tunnels after temperature pressure compensation
Between value handle, by the corresponding median of the first air output median corresponding with the second air output is added as blow PID adjusted
Amount；
Three road signals, which are respectively adopted, to the first oxygen signal and the second oxygen signal takes median to handle, and the first oxygen amount is believed
Number corresponding median median corresponding with the second oxygen signal is added the regulated variable being averaged to as oxygen amount PID.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong
Following manner realization is crossed, but not limited to this: above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with any
Combined form is located in different processors.
It is described in detail below with reference to alternative embodiment of the present invention.
Alternative embodiment of the present invention provides a kind of method for controlling frequency conversion of fired power generating unit pressure fan, and Fig. 4 is according to this hair
The schematic diagram of the method for controlling frequency conversion of the fired power generating unit pressure fan of bright alternative embodiment, as shown in figure 4, Frequency Conversion Modification combination flow process
The following steps are included:
Step 1, increase Frequency Conversion Modification for control signal, comprising: frequency converter rotary speed instruction, frequency converter speed feedback and
Power frequency component.
Step 2, air blower inlet regulating fender control logic is replicated.
Step 3, input and output connection signal, the tag name of control station, exception report are modified, baffle is changed to frequency conversion.
Step 4, optimization fan frequency conversion controls RB content.
Step 5, signal reliability is handled.It include: oxygen signal, air output signal, the processing of power frequency component reliability.
Step 6, compiling, lower dress, debugging.
In this alternative embodiment, Fig. 5 is that the air output of alternative embodiment according to the present invention automatically gives value and forms logic
The schematic diagram of model, Fig. 6 are the schematic diagram of the pressure fan frequency control loop model of alternative embodiment according to the present invention, such as Fig. 5
With shown in Fig. 6, air-supply frequency control circuit strategy Basic Design thinking includes: that the 1, side A, B (or left and right side) air output signal is adopted
With by temperature, pressure signal compensation treated signal.2, dual frequency converter revolving speed controls air output, and air output given value is by oxygen
The air quantity formation that amount pid control circuit output calibration unit load gives UNITD conversion is automatically given plus biasing manually.3, it blows
It measures PID and automatically controls output order by frequency converter revolving speed equilibrium assignmen logic, two frequency converter revolving speed controls are distributed into instruction
System station, controls frequency converter revolving speed；4, the oxygen amount that the oxygen amount given value of oxygen amount pid control circuit is converted by main steam flow is (such as Fig. 5 institute
The f2 (x) shown) automatically give plus biasing is formed manually, regulated variable A, B side oxygen signal be respectively adopted three take in after, then make even
?.
In this alternative embodiment, as shown in fig. 6, the condition that switching manually controls includes: 1, regulated variable abnormal signal；2,
Regulated variable and deviation from the index value are big, and RB does not occur；3, frequency converter rotary speed instruction and actual speed deviation are big, and RB does not occur；
4, pressure fan is under power frequency mode；5, unilateral tripping blower RB.
In this alternative embodiment, Fig. 7 is the pressure fan A frequency conversion control station override tracking of alternative embodiment according to the present invention
The schematic diagram of logical model, Fig. 8 are the pressure fan B frequency conversion control station override trace logic models of alternative embodiment according to the present invention
Schematic diagram, as shown in Figure 7 and Figure 8, pressure fan control station override tracking condition includes: 1, unilateral pressure fan trips RB,
Tripping pressure fan frequency conversion instruction minimizes limit value；2, pressure fan is under conversion system, and when air-introduced machine RB, pressure fan frequency converter turns
Speed instruction override is down to 45% (test determines), and the override time is 20s；3, when unilateral fan frequency converter is under manual mode, separately
When side pressure fan tripping RB occurs, override tracking allows the pressure fan frequency converter of operation to contribute and doubles.
In this alternative embodiment, the power frequency component mode of winning the confidence includes: that blower sequence logic and the control of frequency converter revolving speed are patrolled
It collects in same controller, power frequency component uses single point signals.Blower sequence logic and frequency converter revolving speed control logic be not
Power frequency component is first sent to sequence controller, then communicated to adjusting controller by same controller, in addition, from pressure fan frequency converter electricity
Gas wiring cabinet send all the way that hardwire point power frequency component is to adjusting controller again, will communication point and hard in the adjusting controller
Wiring point phase or the rear power frequency component that formed are used for logic control, prevent communication when something goes wrong, under power frequency mode, power frequency state letter
Number disappear, by entrance regulating fender be accidentally switched to manually and air-introduced machine RB override logical action mistake.
In this alternative embodiment, the processing of regulated variable signal reliability includes: that the side A, B (or left and right sides) air output is distinguished
Using air volume signal of three tunnels after temperature pressure compensation carry out three take in after, then be added as air-supply PID regulated variable.A, the side B
Oxygen signal be respectively adopted three take in after, then take the average regulated variable as oxygen amount PID.
In this alternative embodiment, it includes: content 1 that RB, which improves content, and pressure fan RB occurs, and trip fan frequency converter revolving speed
It closes to 40% (frequency converter revolving speed lower limit value), is switched to manually, other side fan frequency converter revolving speed doubles, and the upper limit to 90% is (specific
It is principle that by blower power output and frequency converter revolving speed high limit overcurrent fault, which does not occur, for value).Content 2, when increasing air-introduced machine RB newly, air-supply
Under machine conversion system, pressure fan frequency conversion rotating speed is down to after 55% (tentative) to cut and (chooses whether to cut according to unit service requirement manually
Manually).Content 3, when air-introduced machine RB, pressure fan frequency converter revolving speed is after override reduction, still at automatic position, increases and automatically controls
Block increase logic.(if selection content 2, logic failure) content 4, when increasing primary air fan RB movement newly, pressure fan becomes
Frequency device (baffle) cuts manual logic (choosing whether to cut manually according to unit service requirement).Content 5, when unilateral fan frequency converter exists
Under manual mode, when other side pressure fan tripping RB occurs, override tracking allows the pressure fan frequency converter of operation to contribute and doubles.
After the logical model configuration, can it is accurate, pressure fan frequency control circuit configuration is rapidly completed and frequency conversion RB is excellent
Change Logical Configuration, realize the control of pressure fan frequency conversion rotating speed, controls unit blasting air amount and oxygen amount is met the requirements.Realize pressure fan frequency conversion
Failure RB is correctly acted.Guarantee the operation of unit safety reliable and economic, it is horizontal to improve unit automation.
The embodiments of the present invention also provide a kind of storage medium, computer program is stored in the storage medium, wherein
The computer program is arranged to execute the step in any of the above-described embodiment of the method when operation.
Optionally, in the present embodiment, above-mentioned storage medium can be set to store by executing based on following steps
Calculation machine program:
S1 adds the letter for carrying out frequency control to pressure fan in the automatic control logic of pressure fan to be controlled
Number, wherein the signal for carrying out frequency control to pressure fan includes: frequency converter rotary speed instruction, frequency converter speed feedback and work
Frequency signal；
S2 obtains the entrance regulating fender control logic of pressure fan；
S3 passes through input and output connection signal, control station and the exception report in modification entrance regulating fender control logic
Tag name, entrance regulating fender control logic is revised as frequency control logic；
S4 adds the quick load shedding RB logic of auxiliary machinery fault in frequency control logic, obtains target frequency control logic,
Wherein, target frequency control logic is used to carry out frequency conversion rotating speed control to pressure fan.
Optionally, in the present embodiment, above-mentioned storage medium can include but is not limited to: USB flash disk, read-only memory (Read-
Only Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard
The various media that can store computer program such as disk, magnetic or disk.
The embodiments of the present invention also provide a kind of electronic device, including memory and processor, stored in the memory
There is computer program, which is arranged to run computer program to execute the step in any of the above-described embodiment of the method
Suddenly.
Optionally, above-mentioned electronic device can also include transmission device and input-output equipment, wherein the transmission device
It is connected with above-mentioned processor, which connects with above-mentioned processor.
Optionally, in the present embodiment, above-mentioned processor can be set to execute following steps by computer program:
S1 adds the letter for carrying out frequency control to pressure fan in the automatic control logic of pressure fan to be controlled
Number, wherein the signal for carrying out frequency control to pressure fan includes: frequency converter rotary speed instruction, frequency converter speed feedback information
And signal；
S2 obtains the entrance regulating fender control logic of pressure fan；
S3 passes through input and output connection signal, control station and the exception report in modification entrance regulating fender control logic
Tag name, entrance regulating fender control logic is revised as frequency control logic；
S4 adds the quick load shedding RB logic of auxiliary machinery fault in frequency control logic, obtains target frequency control logic,
Wherein, target frequency control logic is used to carry out frequency conversion rotating speed control to pressure fan.
Optionally, the specific example in the present embodiment can be with reference to described in above-described embodiment and optional embodiment
Example, details are not described herein for the present embodiment.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
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.It is all within principle of the invention, it is made it is any modification, etc.
With replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method for controlling frequency conversion of fired power generating unit pressure fan characterized by comprising
The signal for carrying out frequency control to the pressure fan is added in the automatic control logic of pressure fan to be controlled,
In, it is described for the pressure fan carry out frequency control signal include: frequency converter rotary speed instruction, frequency converter speed feedback and
Power frequency component；
Obtain the entrance regulating fender control logic of the pressure fan；
By the mark for modifying the input and output connection signal in the entrance regulating fender control logic, control station and exception report
Signature, is revised as frequency control logic for the entrance regulating fender control logic；
The quick load shedding RB logic of auxiliary machinery fault is added in the frequency control logic, obtains target frequency control logic,
In, the target frequency control logic is used to carry out frequency conversion rotating speed control to the pressure fan.
2. the method according to claim 1, wherein the target frequency control logic control loop meet with
Lower control condition:
The side A of the pressure fan and B Lateral supply amount signal are all made of by temperature, pressure signal compensation treated signal；
The air output of the pressure fan is controlled by dual frequency converter revolving speed, the given value of the air output is returned by oxygen amount PID control
It is what the air quantity that road output calibration unit load gives UNITD conversion was formed automatically give value and manual bias and determining；
The air output PID of the pressure fan automatically controls output order and passes through frequency converter revolving speed equilibrium assignmen logic, send described
Air quantity PID automatically controls output order and distributes to two frequency converter revolving speed control stations, and two frequency converter revolving speed control stations are according to dividing
The air output PID being fitted on automatically controls output order control frequency converter revolving speed；
The oxygen amount given value of the oxygen amount pid control circuit of the pressure fan is automatically given by what the oxygen amount that main steam flow is converted obtained
Value is determined with manual bias.
3. the method according to claim 1, wherein meeting following any bar in the target frequency control logic
In the case where part, the target frequency control logic is switched into the state of manually controlling by automatic control state:
Regulated variable abnormal signal in the target frequency control logic；
The deviation between regulated variable and given value in the target frequency control logic is greater than the first deviation, and RB does not occur；
Deviation between frequency converter rotary speed instruction and actual speed is greater than the second deviation, and RB does not occur；
The pressure fan is run under power frequency mode；
Unilateral side tripping blower RB.
4. the method according to claim 1, wherein the override tracking condition of the control station includes following item
When meeting following either condition, override tracking occurs for part:
Unilateral pressure fan trips RB, and tripping pressure fan frequency conversion instruction is minimized limit value；
The pressure fan is run under conversion system, and when air-introduced machine RB, pressure fan frequency converter rotary speed instruction override is down to target
Value, sets the object time for the override time；
When unilateral pressure fan frequency converter is run under manual mode, and other side pressure fan tripping RB occurs, tracked by override
Double the pressure fan frequency converter power output of operation.
5. the method according to claim 1, wherein the mode of winning the confidence of the power frequency component include it is following at least it
One:
In blower sequence logic and frequency converter revolving speed control logic in the case where same controller, the power frequency component is used
Single point signals；
In blower sequence logic and frequency converter revolving speed control logic in the case where different controllers, the power frequency component is first sent
It to sequence controller, then communicates to adjusting controller, in addition, sending hardwire point all the way again from pressure fan frequency converter electrical wiring cabinet
Power frequency component is to adjusting controller, in the adjusting controller, will communication point and hardwire point phase or after form power frequency component
For logic control.
6. the method according to claim 1, wherein the RB logic includes the following conditions:
Pressure fan RB occurs, and the pressure fan frequency converter revolving speed to trip is down to the first revolving speed, by the air-supply tripped
The control mode of machine switches to manual mode, and the pressure fan frequency converter revolving speed not tripped doubles；
When newly-increased air-introduced machine RB, when pressure fan is run under conversion system, pressure fan frequency conversion rotating speed is down to the second revolving speed, according to sending
The service requirement of blower unit determines whether to switch to manual control mode；
When air-introduced machine RB, pressure fan frequency converter revolving speed still at automatic position, increases the block increase of automatic control after override reduction
Logic；
When newly-increased primary air fan RB movement, determined whether according to the service requirement of pressure fan unit by the control of pressure fan frequency converter
Mode switches to manual mode；
When unilateral pressure fan frequency converter is under manual mode, and other side pressure fan tripping RB occurs, override tracking makes operation
Pressure fan frequency converter power output doubles.
7. the method according to claim 1, wherein before obtaining target frequency control logic, the method
Further include:
Regulated variable signal processing logic is added in the frequency control logic being added to after the RB logic, is obtained the target and is become
Frequency control logic；
Wherein, the regulated variable signal processing logic includes:
Median is taken to what the first air output and the second air output were respectively adopted air volume signal of three tunnels after temperature pressure compensation
The corresponding median of first air output median corresponding with the second air output is added as air-supply PID regulated variable by processing；
Three road signals, which are respectively adopted, to the first oxygen signal and the second oxygen signal takes median to handle, by the first oxygen signal pair
The median answered median corresponding with the second oxygen signal is added the regulated variable being averaged to as oxygen amount PID.
8. a kind of frequency-converting control device of fired power generating unit pressure fan characterized by comprising
First adding module, for being added in the automatic control logic of pressure fan to be controlled for being carried out to the pressure fan
The signal of frequency control, wherein the signal for carrying out frequency control to the pressure fan includes: that frequency converter revolving speed refers to
It enables, frequency converter speed feedback and power frequency component；
Module is obtained, for obtaining the entrance regulating fender control logic of the pressure fan；
Modified module, for by modifying the input and output connection signal in the entrance regulating fender control logic, control station
With the tag name of exception report, the entrance regulating fender control logic is revised as frequency control logic；
Second adding module obtains mesh for adding the quick load shedding RB logic of auxiliary machinery fault in the frequency control logic
Mark frequency control logic, wherein the target frequency control logic is used to carry out frequency conversion rotating speed control to the pressure fan.
9. a kind of storage medium, which is characterized in that be stored with computer program in the storage medium, wherein the computer
Program is arranged to execute method described in any one of claim 1 to 8 when operation.
10. a kind of electronic device, including memory and processor, which is characterized in that be stored with computer journey in the memory
Sequence, the processor are arranged to run the computer program to execute side described in any one of claim 1 to 8
Method.
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| CN107166427A (en) * | 2017-06-23 | 2017-09-15 | 辽宁东科电力有限公司 | A kind of fired power generating unit pressure fan automatically controls optimization method |
| CN107228088A (en) * | 2017-05-31 | 2017-10-03 | 上海明华电力技术工程有限公司 | A kind of pressure fan RB control methods based on blower system status monitoring |
| CN107940501A (en) * | 2017-11-30 | 2018-04-20 | 国网辽宁省电力有限公司电力科学研究院 | Air and flue system control optimization method after the transformation of fired power generating unit desulphurization denitration |
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| JPS6019201A (en) * | 1983-07-13 | 1985-01-31 | Yokogawa Hokushin Electric Corp | Blower controller |
| CN106352319A (en) * | 2016-08-31 | 2017-01-25 | 马鞍山当涂发电有限公司 | 660-MW supercritical unit RB control method based on induced draft fan frequency conversion mode |
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| CN107228088A (en) * | 2017-05-31 | 2017-10-03 | 上海明华电力技术工程有限公司 | A kind of pressure fan RB control methods based on blower system status monitoring |
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| CN110242978B (en) | 2021-02-23 |
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