CN106801628A - A kind of steam turbine generator digital electro-hydraulic control system - Google Patents
A kind of steam turbine generator digital electro-hydraulic control system Download PDFInfo
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- CN106801628A CN106801628A CN201710114634.3A CN201710114634A CN106801628A CN 106801628 A CN106801628 A CN 106801628A CN 201710114634 A CN201710114634 A CN 201710114634A CN 106801628 A CN106801628 A CN 106801628A
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- turbine generator
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Classifications
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- 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
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- 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
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
-
- 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
Abstract
The present invention relates to a kind of steam turbine generator digital electro-hydraulic control system, belong to turbine control technical field.The system is made up of redundance type PLC system, including PLC redundant power modules, the first CPU module, the second CPU module, slack ethernet communication module, remote power supply module, I/O data acquisition modules, switching input module, switching value output module, Analog input mModule, analog output module, high speed counting module and live hand behaviour human interface devices；The system is simple and reliable for structure, practical, mainly applies to small-sized thermal power plant, is particularly suitable for the steam turbine generator regulating system of waste incineration and generating electricity.Programmable controller is used to replace expensive dcs to reduce cost of equipment, with versatility it is good, stability is high, operating time meet require the characteristics of, the grid-connected of steam turbine generator generating set, steam turbine generator spatial load forecasting and primary frequency function can be completed.
Description
Technical field
The invention belongs to turbine control technical field, and in particular to a kind of steam turbine generator digital electro-hydraulic regulation system
System, is suitable for the steam turbine generator governing system of small-sized thermal power plant particularly waste incineration and generating electricity.
Background technology
Steam turbine generator be the vapor with uniform temperature and pressure as working medium, thermal energy is rotary for mechanical energy
Prime mover.Power station steam turbine generator is used to drag synchronous generator, transforms mechanical energy into electricity.
Steam turbine generator digital electro-hydraulic control system（DEH）The main steam turbine generator that completes starts control, stops control, just
Often run and the adjusting control function under accident conditions.DEH controllers perform (EH) system and constitute a complete number with hydraulic pressure
The electro-hydraulic regulation of wordization（DEH）System.
The task of DEH systems：Ensure power supply quality, user has a certain amount of and value requirement to electric energy, because electric energy can not
Mass storage, and power consumer is to change at any time to the demand of electric energy, thus Turbo-generator Set power output can with
The demand at family and change；The requirement of electric energy matter, all of electrical equipment be all operate in a rated voltage and rated frequency it
Under, so the electric energy that power plant is transported to power network must be the requirement of the rated voltage and rated frequency that meet access point, in China
The rated frequency of power network is 50HZ.Most synchronous generator rotor magnetic pole in power plant is all a pair, the frequency of generator
The relation of rate, rotating speed and magnetic pole logarithm such as following formula：
Wherein, f is frequency (HZ)；N is motor synchronous rotational speed (r/min)；P is magnetic pole logarithm.
So exporting the electric energy of 50HZ frequencies in the generator requirement that China's magnetic pole is a pair, generator synchronous rotational speed is necessary for
3000r/min.The electric energy power of generator output is relevant with the electromagnetic torque on generator amature, is calculated as follows：
Wherein, P is generated output power (Kw)；N is motor synchronous rotational speed (r/min)；MeIt is the electromagnetism on generator amature
Torque (KNm).
Because the rotor of generator and the rotor coaxial of steam turbine generator are installed, the M in the case where mechanical resistance square is not consideredeDeng
In the steam power square M of steam turbine generatort, the steam power square M of steam turbine generatortWith steam turbine generator rotating speed and internal power
Relation such as following formula：
Wherein, n is steam turbine generator rotating speed (r/min)；PjIt is steam turbine generator internal power.
Therefore power plant by meet grid requirements to adjust generatings can three parameters, voltage typically by regulation generating
The exciting current of machine is adjusted, and the frequency and power output of electric energy are adjusted by the rotating speed of steam turbine generator, in steamer hair
Before electric motor starting is grid-connected, DEH systems constantly accelerate steam turbine generator according to preset program, the frequency of generator is equal to power network
Frequency.Steam turbine generator air inflow is automatically adjusted according to burden requirement according to DEH systems after Turbo-generator Set is grid-connected, to protect
The rotating speed and power output for demonstrate,proving steam turbine generator meet requirement.After Turbo-generator Set and grid disconnection, DEH systems are according to pre-
Determine program constantly to slow down steam turbine generator, to reach the purpose of safe shutdown.There is hypervelocity in steam turbine generator or vibrations are super
When mark, DEH systems are constantly slowed down steam turbine generator according to safeguard program, to reach the purpose of safe shutdown.
Be main purpose to burn away the refuse due to waste-to-energy plant, generating be in order to reduce the operation cost of enterprise,
And because refuse thermal value is not high, installed capacity very little, therefore it is not involved in the peak regulation of power network.Existing DEH systems are substantially to press
The technical requirements of large-size thermal power plant are designed and manufacture, and control device uses dcs, involve great expense.Cause
This find not only meet small-sized thermal power plant technical requirements but also cheap DEH systems be urgent need to resolve problem.
The content of the invention
The invention aims to solve the deficiencies in the prior art, there is provided a kind of steam turbine generator digital electro-hydraulic regulation system
System, the system architecture is simple and reliable, and equipment investment is reduced in the case of can meeting small power station's regulation technology requirement.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of steam turbine generator digital electro-hydraulic control system, is made up of redundance type PLC system, including PLC redundant power modules,
One CPU module, the second CPU module, slack ethernet communication module, remote power supply module, I/O numbers
According to acquisition module, switching input module, switching value output module, Analog input mModule, at a high speed analog output module, meter
Digital-to-analogue block and live hand behaviour human interface devices；
Described PLC redundant power modules respectively with the first CPU module, the second CPU module, slack
Ethernet communication module is connected, for the first CPU module, the second CPU module, slack Ethernet
Communication module provides electric energy；
First CPU module and the second CPU module are connected by optical fiber and carry out data syn-chronization；
First CPU module, the second CPU module are connected with slack ethernet communication module respectively, control
The communications of slack ethernet communication module processed；
First CPU module, the second CPU module are connected with live hand behaviour's human interface devices respectively；Scene
Hand behaviour's human interface devices are used for the scene display of steam turbine generator operational factor and the site operation personnel when controlling on the spot
The first CPU module and the second CPU module are controlled on the spot；
Slack ethernet communication module is also connected with Power Plant DCS System, generator automatic sub-synchronous device respectively, for inciting somebody to action
The data transfer that first CPU module or the second CPU module are transmitted is automatic to Power Plant DCS System, generator
Semi-synchronizing device, is additionally operable to be transferred to the control signal that Power Plant DCS System, generator automatic sub-synchronous device are sent in first
Central processor module and the second CPU module；
First CPU module, the second CPU module are also connected with I/O data acquisition modules respectively, I/O data
Acquisition module also respectively with switching input module, switching value output module, Analog input mModule, analog output module and
High speed counting module is connected；
I/O data acquisition modules are used for the analog-to-digital conversion of signal, count switching input module, Analog input mModule and at a high speed
After the analog signal that digital-to-analogue block is transmitted is converted into data signal, send to the first CPU module, the second central processing unit
Module, is also converted into analog signal hair by the data signal that the first CPU module, the second CPU module are transmitted
Deliver to switching value output module, analog output module；
Switching input module is used for the data message of the switching value of each magnetic valve and pressure switch that gather steam turbine generator；
Switching value output module is used for the switching value of each magnetic valve for controlling steam turbine generator；
Analog input mModule is used to gather the various analog signalses of steam turbine generator, including control valve position aperture, main vapour
Door aperture, admission pressure, steam pressure, steam flow, steam turbine generator temperature and steam turbine generator vibration values；
Analog output module is used to control to adjust valve valve seat opening；
High speed counting module is used to gather the rotating speed of steam turbine generator；
Remote power supply module also respectively with I/O data acquisition modules, switching input module, switching value output module, analog quantity
Input module, analog output module are connected with high speed counting module, for being I/O data acquisition modules, On-off signal mould
Block, switching value output module, Analog input mModule, analog output module and high speed counting module provide electric energy.
It is further preferred that also include central chassis, PLC redundant power modules, the first CPU module, the
Two CPU modules and slack ethernet communication module are each attached in central chassis.
It is further preferred that also including long-range frame, remote power supply module, I/O data acquisition modules, switching value are defeated
Enter module, switching value output module, Analog input mModule, analog output module and high speed counting module to be each attached to remotely
In frame.
It is further preferred that slack ethernet communication module is connected with Power Plant DCS System by optical fiber；Redundancy
Fiber optic Ethernet communication module is connected with generator automatic sub-synchronous device also by optical fiber.
It is further preferred that the first CPU module passes through PROFIBUS cable phases with I/O data acquisition modules
Even；Second CPU module is connected with I/O data acquisition modules also by PROFIBUS cables.
It is further preferred that the first CPU module（2）Human interface devices are grasped with live hand（14）Pass through
PROFIBUS cables are connected；Second CPU module（3）Human interface devices are grasped with live hand（14）Also by
PROFIBUS cables are connected.
Compared with prior art, its advantage is the present invention：
Present system is simple and reliable for structure, practical, mainly applies to small-sized thermal power plant, is particularly suitable for rubbish
The steam turbine generator regulating system of rubbish burning electricity generation.The system uses programmable controller（PLC）Instead of expensive distribution
Control system（DCS）To reduce cost of equipment, with versatility it is good, stability is high, operating time meet require the characteristics of, can be complete
Into the grid-connected of steam turbine generator generating set, steam turbine generator spatial load forecasting and primary frequency function.
Present system compared with the steam turbine generator regulating system that DCS system is constituted, about save 2/3 investment into
This, and regulation performance and stability reach use requirement.
Brief description of the drawings
Fig. 1 is the structural representation of steam turbine generator digital electro-hydraulic control system；
Wherein, 1, PLC redundant power modules；2nd, the first CPU module；3rd, the second CPU module；4th, redundancy light
Fine ethernet communication module；5th, remote power supply module；6th, I/O data acquisition modules；7th, switching input module；8th, switching value is defeated
Go out module；9th, Analog input mModule；10th, analog output module；11st, high speed counting module；12nd, Power Plant DCS System；13、
Generator automatic sub-synchronous device；14th, live hand behaviour human interface devices；15th, long-range frame；16th, central chassis.
Wherein, the direction of arrow is that signal or data are moved towards.
Specific embodiment
With reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and should not be regarded as limiting this hair
Bright scope.In the examples where no specific technique or condition is specified, according to the technology or condition described by document in the art
Or carried out according to product description.Material therefor or the unreceipted production firm person of device, being can be by buying what is obtained
Conventional products.
Those skilled in the art of the present technique are it is understood that the correlation module that is related in the present invention and its function of realization
It is to carry computer software programs conventional in the prior art in device, device or the system of hardware after improvement and its composition
It is not that computer software programs of the prior art or relevant agreement are improved or relevant agreement is achieved that.For example,
Computer hardware system after improvement still can realize the spy of the hardware system by loading existing operation system of software
Determine function.It is understood, therefore, that innovation of the invention is improvement and its company to hardware module in the prior art
Connect syntagmatic, rather than be only in hardware module to realize the improvement of software or agreement carried about function.
Those skilled in the art of the present technique are it is understood that the correlation module mentioned in the present invention is performed for the application
Described in one or more in step, measure, scheme in operation, method, flow of hardware device.The hardware device can
Purpose needed for thinking and specially design and manufacture, or can also using the known device in all-purpose computer or it is known its
His hardware device.The all-purpose computer is activated or reconstructed with having procedure Selection of the storage in it.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " " used herein, " one
It is individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that what is used in specification of the invention arranges
Diction " including " refer to the presence of the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
One or more other features, integer, step, operation, element, component and/or their group.It should be understood that when we claim unit
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or can also exist
Intermediary element.Additionally, " connection " used herein or " coupling " can include wireless connection or coupling.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combines.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein（Including technology art
Language and scientific terminology）With with art of the present invention in those of ordinary skill general understanding identical meaning.Should also
Understand, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or excessively formal implication be explained.
As shown in figure 1, a kind of steam turbine generator digital electro-hydraulic control system, is made up of redundance type PLC system, including PLC
Redundant power module 1, the first CPU module 2, the second CPU module 3, slack ethernet communication module
4th, remote power supply module 5, I/O data acquisition modules 6, switching input module 7, switching value output module 8, analog input mould
Block 9, analog output module 10, high speed counting module 11 and live hand behaviour human interface devices 14；
Described PLC redundant power modules 1 respectively with the first CPU module 2, the second CPU module 3, redundancy
Fiber optic Ethernet communication module 4 is connected, for the first CPU module 2, the second CPU module 3, redundancy light
Fine ethernet communication module 4 provides electric energy；
First CPU module 2 and the second CPU module 3 are connected by optical fiber and carry out data syn-chronization；
First CPU module 2, the second CPU module 3 are connected with slack ethernet communication module 4 respectively,
The communications of control slack ethernet communication module 4；
First CPU module 2, the second CPU module 3 grasp man-machine by PROFIBUS cables with live hand respectively
Interface equipment 14 is connected；Live hand behaviour human interface devices 14 are used for the scene display of steam turbine generator operational factor and just
Site operation personnel controls the first CPU module 2 and the second CPU module 3 on the spot during ground control, and control is believed
Number the first CPU module 2 and the second CPU module 3 are sent directly to, afterwards by I/O data acquisition modules
6, switching value output module 8, analog output module 10 are transmitted a signal to, so as to control each magnetic valve of steam turbine generator
Opening and closing and control valve position aperture；
Slack ethernet communication module 4 is also respectively by optical fiber and Power Plant DCS System 12, generator automatic sub-synchronous device
13 are connected, for the data transfer that transmits the first CPU module 2 or the second CPU module 3 to Power Plant DCS
System 12, generator automatic sub-synchronous device 13, are additionally operable to send out Power Plant DCS System 12, generator automatic sub-synchronous device 13
The control signal come is transferred to the first CPU module 2 and the second CPU module 3；I.e. Power Plant DCS System 12 will
Control signal is sent to the first CPU module 2 and the second central processing unit by slack ethernet communication module 4
Module 3, afterwards by the conversion of I/O data acquisition modules 6, transmits a signal to switching value output module 8, analog output mould
Block 10, so as to control opening and closing and the control valve position aperture of each magnetic valve of steam turbine generator；Generator automatic sub-synchronous device
13 just control signal can also be sent to the first CPU module 2 and second by slack ethernet communication module 4
CPU module 3, afterwards by the conversion of I/O data acquisition modules 6, transmits a signal to switching value output module 8, mould
Analog quantity output module 10, so as to control opening and closing and the control valve position aperture of each magnetic valve of steam turbine generator；
First CPU module 2, the second CPU module 3 are also adopted by PROFIBUS cables and I/O data respectively
Collection module 6 is connected, and I/O data acquisition modules 6 are also defeated with switching input module 7, switching value output module 8, analog quantity respectively
Enter module 9, analog output module 10 to be connected with high speed counting module 11；
I/O data acquisition modules 6 are used for the analog-to-digital conversion of signal, by switching input module 7, Analog input mModule 9 and height
After the analog signal that fast counting module 11 is transmitted is converted into data signal, send to first the 2, second center of CPU module
Processor module 3, is also converted into mould by the data signal that the first CPU module 2, the second CPU module 3 are transmitted
Intend signal to send to switching value output module 8, analog output module 10；
Switching input module 7 is used for the data message of the switching value of each magnetic valve and pressure switch that gather steam turbine generator；
Switching value output module 8 is used for the opening and closing of each magnetic valve for controlling steam turbine generator；
Analog input mModule 9 is used to gather the various analog signalses of steam turbine generator, including control valve position aperture, main vapour
Door admission pressure, steam pressure, steam flow, steam turbine generator temperature and steam turbine generator vibration values；
Analog output module 10 is used to control to adjust valve valve seat opening；
High speed counting module 11 is used to gather the rotating speed of steam turbine generator；
Remote power supply module 5 also respectively with I/O data acquisition modules 6, switching input module 7, switching value output module 8, mould
Analog quantity input module 9, analog output module 10 are connected with high speed counting module 11, for for I/O data acquisition modules 6, open
Measure input module 7, switching value output module 8, Analog input mModule 9, analog output module 10 and high speed counting module in pass
11 provide electric energy.
Also include central chassis 16, PLC redundant power modules 1, the first CPU module 2, the second central processing unit
Module 3 and slack ethernet communication module 4 are each attached in central chassis 16.
Also include long-range frame 15, remote power supply module 5, I/O data acquisition modules 6, switching input module 7, switch
Amount output module 8, Analog input mModule 9, analog output module 10 and high speed counting module 11 are each attached to long-range frame
On 15.
Power Plant DCS System 12, generator automatic sub-synchronous device 13 and live hand behaviour human interface devices 14 can be checked
Monitor the various operational factors of steam turbine generator.
Steam turbine generator digital electro-hydraulic control system of the present invention is made up of redundance type PLC system, and PLC uses hardware redundancy side
Formula.There are two power modules in PLC redundant power modules 1, one primary, and one standby；Slack ethernet communication mould
Also there are two communication modules in block 4, one primary, and one standby；System sets two CPU modules：First centre
Reason device module 2, the second cpu block 3, purpose is also one primary, and one standby.
Present system gathers various by switching input module 7, Analog input mModule 9 and high speed counting module 11
Operational factor（Including rotating speed, generated output, vibrations, temperature, admission pressure, valve position etc.）, will by I/O data acquisition modules 6
Collect after analog signal is converted into data signal, send to the first CPU module 2, the second CPU module 3,
The first CPU module 2, the second CPU module 3 will be gathered by slack ethernet communication module 4 afterwards
Various operational factor Power Plant DCS Systems 12, the generator automatic sub-synchronous device 13 for arriving；Power Plant DCS System 12 can be supervised
Depending on and control.Automatic sub-synchronous device sends stepping by checking frequency, voltage, the phase angle of engine to redundant PLC system
Signal, control steam turbine generator increases, deceleration, the frequency of formula engine and phase angle and synchronized.
Present system also grasps control signal that human interface devices 14 send through the first central processing unit by live hand
Module 2, the model of the second CPU module 3 deliver to the conversion of I/O data acquisition modules 6, and output switch parameter mould is passed to afterwards
Block 8 and/or analog output module 10, so as to control each operational factor of steam turbine generator, such as control valve position aperture, rotating speed
Deng to meet the requirement of power network.
Present system sets two CPU modules：First CPU module 2, the second central processing unit mould
Block 3, it is therefore an objective to which one primary, one standby, is easy to production.
When outside or inside failure injures the safe operation of steam turbine generator, present system is joined by changing
Number is interrupted, and force termination realizes quick deceleration or shutdown.
Switching input module in long-range frame is believed by the various switching values that hardwire mode is input into steam turbine generator
Number.Analog input mModule in long-range frame is input into the various analog signalses of steam turbine generator by hardwire mode, and
Analog signalses are converted to by I/O data acquisition modules by digital quantity signal.High speed counting module in long-range frame passes through
Hardwire mode is input into the rotational speed pulse signal of steam turbine generator.Switching value output module in long-range frame passes through hardwire side
Formula exports the opening and closing of the various hydraulic system magnetic valves of+24V Automatic level control steam turbine generators.Analog output mould in long-range frame
Block exports 4 ~ 20mA signals and controls steam turbine generator control valve position aperture by hardwire mode.
The control function of present system, including：
（1）Steam turbine generator start shut down when use Automatic Frequency Control.Control method is single-circuit closed loop PID control.
The set-point of control system is the rotating speed of target of steam turbine generator（r/min）With a liter speed（The set-point grasps man-machine by live hand
Interface equipment or Power Plant DCS System are given, and can be selected by present change-over switch, or using other manner selection, are not had
Have specifically limited）.The value of feedback of present system is the actual running speed of steam turbine generator（r/min）, value of feedback is by opening
The data that input module is measured in pass, Analog input mModule and high speed counting module are collected.Present system is defeated by analog quantity
Go out the master die analog quantity signal that module is output as 4 ~ 20mA, steam turbine generator control valve position is controlled by this road analog signals
Aperture, and then control to change the rotating speed of steam turbine generator into the quantity of steam of steam turbine generator.
（2）Steam turbine generator starts when close to synchronous rotational speed, and it is automatic accurate same that present system automatically switches to generator
Phase device AS is controlled, and control method is the stepping Valve controlling of open loop.The set-point of system is the stepping rotating speed of steam turbine generator
（r/min）（The set-point is by automatic sub-synchronous device（AS）Be given）, system is output as 4 ~ 20mA by analog output module
Master die analog quantity signal, the aperture of steam turbine generator control valve position is controlled by this road analog signalses, so control into
Enter the quantity of steam of steam turbine generator to change the rotating speed of steam turbine generator.While the frequency and phase of the output electric energy of regulator generator
Parallactic angle is allowed to and synchronized.
（3）After generating set grid-connected success, present system automatically switches to spatial load forecasting, and control method is multiloop
Closed-loop Cascade PID control.The set-point of system is the target power of steam turbine generator（KW）With load conversion rate（The set-point
Human interface devices are grasped by live hand or Power Plant DCS System is given, selected by present change-over switch, or use other
Mode is selected, and is not particularly limited）.The value of feedback of system is the actual running speed of steam turbine generator（r/min）, turbine generator
The feedback loading of unit（KW）And initial steam pressure（Mpa）, value of feedback be by switching input module, Analog input mModule and
The data that high speed counting module is collected.System is output as the master die analog quantity signal of 4 ~ 20mA by analog output module,
The aperture of steam turbine generator control valve position is controlled by this road analog signals, and then controls to enter the steam of steam turbine generator
Measure to change the output load of steam turbine generator；
（4）, switching value output module major control turbine generator lubricating oil system various magnetic valves, make oil system in turbine generator
Regulation oil pressure or the quick pressure releasing in failure are set up when machine runs, has ensured that steam turbine generator safety and steady runs.
To sum up, present system can realize rotating speed control, spatial load forecasting, the regulation of main steam pressure to steam turbine generator
Control etc..
General principle of the invention, principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (6)
1. a kind of steam turbine generator digital electro-hydraulic control system, it is characterised in that be made up of redundance type PLC system, including PLC superfluous
Remaining power module（1）, the first CPU module（2）, the second CPU module（3）, slack ethernet communication
Module（4）, remote power supply module（5）, I/O data acquisition modules（6）, switching input module（7）, switching value output module
（8）, Analog input mModule（9）, analog output module（10）, high speed counting module（11）Set with live hand behaviour's man-machine interface
It is standby（14）；
Described PLC redundant power modules（1）Respectively with the first CPU module（2）, the second CPU module
（3）, slack ethernet communication module（4）It is connected, for the first CPU module（2）, the second central processing unit
Module（3）, slack ethernet communication module（4）Electric energy is provided；
First CPU module（2）With the second CPU module（3）Being connected by optical fiber carries out data syn-chronization；
First CPU module（2）, the second CPU module（3）Respectively with slack ethernet communication module
（4）It is connected, controls slack ethernet communication module（4）Communications；
First CPU module（2）, the second CPU module（3）Respectively human interface devices are grasped with live hand（14）
It is connected；Live hand grasps human interface devices（14）Scene for steam turbine generator operational factor shows and when controlling on the spot
Site operation personnel controls the first CPU module on the spot（2）With the second CPU module（3）；
Slack ethernet communication module（4）Also respectively with Power Plant DCS System（12）, generator automatic sub-synchronous device（13）
It is connected, for by the first CPU module（2）Or second CPU module（3）The data transfer for transmitting is to power plant
DCS system（12）, generator automatic sub-synchronous device（13）, it is additionally operable to Power Plant DCS System（12）, generator automatic presynchronization
Device（13）The control signal sent is transferred to the first CPU module（2）With the second CPU module（3）；
First CPU module（2）, the second CPU module（3）Also respectively with I/O data acquisition modules（6）Phase
Even, I/O data acquisition modules（6）Also respectively with switching input module（7）, switching value output module（8）, analog input mould
Block（9）, analog output module（10）And high speed counting module（11）It is connected；
I/O data acquisition modules（6）For the analog-to-digital conversion of signal, by switching input module（7）, Analog input mModule
（9）And high speed counting module（11）After the analog signal for transmitting is converted into data signal, send to the first CPU module
（2）, the second CPU module（3）, also by the first CPU module（2）, the second CPU module（3）Transmit
Data signal be converted into analog signal and send to switching value output module（8）, analog output module（10）；
Switching input module（7）Data letter for gathering the switching value of each magnetic valve and pressure switch of steam turbine generator
Breath；
Switching value output module（8）Opening and closing for controlling each magnetic valve of steam turbine generator；
Analog input mModule（9）Various analog signalses for gathering steam turbine generator, including control valve position aperture, master
Porthole admission pressure, steam pressure, steam flow, steam turbine generator temperature and steam turbine generator vibration values；
Analog output module（10）For controlling to adjust valve valve seat opening；
High speed counting module（11）Rotating speed for gathering steam turbine generator；
Remote power supply module（5）Also respectively with I/O data acquisition modules（6）, switching input module（7）, output switch parameter mould
Block（8）, Analog input mModule（9）, analog output module（10）And high speed counting module（11）It is connected, for being I/O numbers
According to acquisition module（6）, switching input module（7）, switching value output module（8）, Analog input mModule（9）, analog quantity it is defeated
Go out module（10）And high speed counting module（11）Electric energy is provided.
2. steam turbine generator digital electro-hydraulic control system according to claim 1, it is characterised in that also including central chassis
（16）, PLC redundant power modules（1）, the first CPU module（2）, the second CPU module（3）And slack
Ethernet communication module（4）It is each attached to central chassis（16）On.
3. steam turbine generator digital electro-hydraulic control system according to claim 1, it is characterised in that also including long-range frame
（15）, remote power supply module（5）, I/O data acquisition modules（6）, switching input module（7）, switching value output module（8）、
Analog input mModule（9）, analog output module（10）And high speed counting module（11）It is each attached to long-range frame（15）On.
4. steam turbine generator digital electro-hydraulic control system according to claim 1, it is characterised in that slack Ethernet
Communication module（4）With Power Plant DCS System（12）It is connected by optical fiber；Slack ethernet communication module（4）With generator certainly
Dynamic semi-synchronizing device（13）It is connected also by optical fiber.
5. steam turbine generator digital electro-hydraulic control system according to claim 1, it is characterised in that the first central processing unit
Module（2）With I/O data acquisition modules（6）It is connected by PROFIBUS cables；Second CPU module（3）With I/O numbers
According to acquisition module（6）It is connected also by PROFIBUS cables.
6. steam turbine generator digital electro-hydraulic control system according to claim 1, it is characterised in that the first central processing unit
Module（2）Human interface devices are grasped with live hand（14）It is connected by PROFIBUS cables；Second CPU module（3）With
Live hand grasps human interface devices（14）It is connected also by PROFIBUS cables.
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Cited By (3)
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| CN109728987A (en) * | 2019-01-07 | 2019-05-07 | 上海自动化仪表有限公司 | Modbus hand suitable for steam turbine special equipment grasps device |
| CN112104010A (en) * | 2020-09-01 | 2020-12-18 | 山东晋煤明升达化工有限公司 | Power control method for generator |
| CN113847308A (en) * | 2021-10-11 | 2021-12-28 | 北京瑞赛长城航空测控技术有限公司 | Remote electro-hydraulic servo control system and method based on Ethernet communication |
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