CN110529199A - A kind of steam turbine valve control method, device and system for supporting control logic to reconfigure - Google Patents
A kind of steam turbine valve control method, device and system for supporting control logic to reconfigure Download PDFInfo
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- CN110529199A CN110529199A CN201910680498.3A CN201910680498A CN110529199A CN 110529199 A CN110529199 A CN 110529199A CN 201910680498 A CN201910680498 A CN 201910680498A CN 110529199 A CN110529199 A CN 110529199A
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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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Abstract
The present invention discloses a kind of steam turbine valve control method, device and system for supporting control logic to reconfigure, and is related to steam turbine valve control field.Steam turbine valve control method includes: to recompile control logic data in response to external input, obtains and recompiles control logic data accordingly；The control logic data that recompile got are decoded, obtain that control logic data can be performed accordingly；Storage decodes obtained executable control logic data every time；Control logic data can be performed accordingly according to external command setting selection, be updated to current control logic；And steam turbine valve control is carried out according to current control logic.It is reconfigured using the achievable module side On-line Control logic of the present invention, to improve the response speed of steam turbine valve control.
Description
Technical field
The present invention relates to technical field of industrial control, especially a kind of high-speed response steamer for supporting control logic to reconfigure
Machine valve control method, device and system.
Background technique
Steam turbine is prime mover of one group of large high-speed operating, is one of the capital equipment of thermal power plant unit, uses vapour
Turbine carrys out drawing generator so as to make mechanical energy be converted into electric energy, is finally completed power generation power supply network and uses.
Steam turbine is all made of digital electrohydraulic control system (Digital Electric in modern power plants unit
Hydraulic Control System, DEH system) it is controlled, the revolving speed control either in start-up course, or it is normal
Running Load Regulation and main vapour pressure control, are all finally by high pressure control valve to steam turbine and high pressure master
The control of valve position of porthole is realized, therefore valve control is the necessary functions of DEH.
The wherein aperture management of valve is clearly the critical function of DEH system, and steam turbine is from the starting red switch of beginning to same
Phase arrives grid-connected on-load again, is realized by controlling the valve opening of steam turbine, digital electro-hydraulic regulating system for steam turbine
In management valve be an important link, it be directly related to unit operation stabilization and efficiency.
The main operational principle of valve control module is that the current aperture and control system by acquiring steam turbine valve are sent out
Given aperture out constitutes comparing element, and then by proportional integration operation, final output adjusts current control control valve
Movement makes the aperture of valve reach the position that given expectation reaches.
In addition to working contents, valve control module also needs to complete such as process under the cooperation of upper controller
The contents such as filtering, abnormality processing, linear amendment, process judgement.
Whether valve control module there is quick input signal acquisition, internal logic processing judgement, output signal to establish
Speed directly influences the response speed of steam turbine valve aperture control, to directly influence the safety of entire unit, warp
Ji property.
Each turbine making manufacturer polygamy has its dedicated valve control module, meanwhile, many digital electro-hydraulics adjust DEH
Control system producer is also configured with special valve control module.But fixed base control is executed inside its control module mostly to patrol
Volume, the valve control module of part of the manufacturer can also carry out necessary additional logic, but above-mentioned base control logic and additional logic
Fixed after module factory, power plant operator can not be adjusted flexibly according to complicated field demand base control logic and
Additional logic, or have to be realized in host controller side, the data interaction pair between controller and valve control module
The response speed of whole control logic brings certain delay, such as must complete logic adjustment in control module side, then module
It needs to return factory to be upgraded to realize, often operability is excessively poor.Simultaneously as the difference in used interior design circuit, respectively
The valve control module of producer controls the period at present and rests on more than ten milliseconds to a few tens of milliseconds.
Summary of the invention
The object of the present invention is to provide a kind of steam turbine valve control method for supporting control logic to reconfigure, device and it is
System is, it can be achieved that module side On-line Control logic reconfigures, to improve the response speed of steam turbine valve control.
The technical scheme adopted by the invention is as follows: a kind of steam turbine valve control method, comprising:
Control logic data are recompiled in response to external input, obtains and recompiles control logic data accordingly；
The control logic data that recompile got are decoded, obtain that control logic data can be performed accordingly；
Storage decodes obtained executable control logic data every time；
Control logic data can be performed accordingly according to external command setting selection, be updated to current control logic；
Steam turbine valve control is carried out according to current control logic.
Further, the steam turbine valve control method further includes obtaining steam turbine valve real time status information；It carries out
When steam turbine valve controls, it is based on steam turbine valve real time status information, executes current control logic.
Further, control logic includes main control logic and additional control logic, recompiles control logic data packet
It includes and recompiles main control logic data and/or recompile additional control logic data.Main control logic is generally conventional PID control
Logic processed, additional control logic includes the control logics such as process filtering, abnormality processing, linear amendment and process judgement, specific to divide
Existing corresponding control methods not can be used.
Preferably, it for the executable control logic data decoded every time, is numbered respectively according to preset numbers rule
And store, it include number corresponding with executable control logic data to be selected in the external command for setting current control logic
Information.External command can be issued through host controller to valve control module from Field Force by industrial personal computer, the control selected
The current demand for control of logical AND processed is adapted.
Invention additionally discloses a kind of steam turbine valve control devices, comprising:
Data acquisition module is recompiled, for recompiling control logic data in response to external input, acquisition is rearranged accordingly
Translate control logic data；
Control logic decoding module obtains to hold accordingly for decoding the control logic data that recompile got
Row control logic data；
Data memory module, for storing the executable control logic data for decoding obtain every time；
Control logic update module, for control logic data to can be performed accordingly according to external command setting selection, more by it
It is newly current control logic；
Control logic execution module, for carrying out steam turbine valve control according to current control logic.
Invention additionally discloses a kind of steam turbine valve control module, including control logic more new interface, upper control interface,
Data memory module and data processing module, data processing module include control logic decoding unit, control logic updating unit
And control logic execution unit；
Data processing module recompiles control logic data by the way that the acquisition of control logic more new interface is externally input, and then passes through
Control logic decoding unit decodes the control logic data that recompile, and obtains that control logic number can be performed accordingly
According to, and store to data memory module；
Data processing module obtains External control logic setting instruction by upper control interface, and then is updated by control logic
Control logic data can be performed according to external command setting selection in unit accordingly, are updated to current control logic；
The control logic execution unit carries out steam turbine valve control according to current control logic.
Further, steam turbine valve control module of the present invention further includes valve state parameter collection module and control letter
Number output module, valve state parameter collection module and control signal output module respectively include analog quantity channel and digital quantity is logical
Road；Control logic execution unit carries out steam turbine valve control according to the valve state parameter that valve state parameter collection module acquires
System, and exterior operator is output control signals to by controlling signal output module.The analog quantity channel and digital quantity are logical
High speed analog-digital conversion/digital-to-analogue conversion device can be used in road, high-speed figure amount photoelectric isolating device is realized, guarantees data acquisition and control
The timeliness of signal output, to ensure the speed of valve control response.
Preferably, the data processing module uses the fpga chip with Embedded Soft Core.This processor chips have
Higher data-handling efficiency can further ensure the real-time and accuracy of valve control response.
Preferably, the control logic more new interface uses USB interface.Compiling computer and control logic decoding are single
Member carries out coding and the decoding of control logic based on unified coding and decoding rule, and control logic is converted to processor chips energy
The prior art can be used in the control logic data enough identified, specific coding decoding rule.
Invention additionally discloses a kind of steam turbine valve management systems based on aforementioned steam turbine valve control module, including compile
Computer, host controller and valve control module are translated, it is total by internal communication between host controller and valve control module
Line connection communication；
Valve control module recompiles control logic data by the acquisition compiling computer input of control logic more new interface；
Host controller receives External control logic set information, and controls mould to valve according to External control logic set information
Part sends control logic setting instruction；
Valve control module sets instruction choosing by the setting instruction of upper control interface control logic, and according to control logic
Stored accordingly executable control logic data are selected, are updated to current control logic, and then according to current control logic
Carry out steam turbine valve control.
Beneficial effect
Compared with prior art, the present invention has the following advantages that and improves:
(1) recompiling mechanism by setting modify module side control logic can, and operator can be according to actual field need
The modification of the control logic or progress module side control logic of asking selection adaptable is grasped to complete steam turbine valve control
Make flexibly, to give an encore upgrading without valve control module, substantially reduce equipment cost；
(2) since module side can be achieved at the same time base control logic and additional control logic, reduce module side and upper control
The logic interaction of device side processed, therefore faster process cycle can be obtained, greatly improve the speed of response of valve control；
(3) by configuration high-speed input/output interface and high speed FPGA processor, input signal acquisition is completed, output signal is driven
The work such as dynamic, internal logic processing, can further shorten the control period, and by the complexity of control logic, it is controllable to control the period
System is in 2-5ms range, and the accuracy of valve control can be further ensured that by controlling the period faster then；
(4) control logic of valve control module more new interface can receive new control logic at any time and save as used in control,
It is easy to operate easy-to-use.
Detailed description of the invention
Fig. 1 show steam turbine valve control method flow diagram of the present invention；
Fig. 2 show a kind of valve control system configuration diagram in the prior art；
Fig. 3 show alternative valve control system configuration diagram in the prior art；
Fig. 4 show the valve control system configuration diagram using valve control method of the present invention.
Specific embodiment
It is further illustrated below in conjunction with the drawings and specific embodiments.
Referring to figs. 2 and 3, two kinds of steam turbine valve control models are existed in the prior art, in Fig. 2, valve control module
Side executes fixed control logic, and host controller side executes additional logic.In Fig. 3, valve control module side executes fixed
Control logic and additional logic, host controller side do not execute or execute a small amount of control logic.Fig. 2 and valve shown in Fig. 3
In control system, fixed base control logic and/or necessary additional logic are executed inside valve control module, it can not scene
It recompiles.Base control logic and additional logic can not be adjusted flexibly in power plant operator according to demand, or has to upper
Realized that the data friendship between controller and valve control module brings the response speed of whole control logic in level controller side
Certain delay such as must complete logic adjustment in control module side, then module needs to return factory and upgraded to realize, often
Operability is excessively poor.
Embodiment 1
Refering to what is shown in Fig. 1, the present embodiment is a kind of steam turbine valve control method, comprising:
Control logic data are recompiled in response to external input, obtains and recompiles control logic data accordingly；
The control logic data that recompile got are decoded, obtain that control logic data can be performed accordingly；
Storage decodes obtained executable control logic data every time；
Control logic data can be performed accordingly according to external command setting selection, be updated to current control logic；
Steam turbine valve control is carried out according to current control logic.
In use, the present embodiment method is executed by steam turbine valve control module, realize that module side On-line Control is patrolled
It collects and reconfigures, to improve the response speed of steam turbine valve control.
The present embodiment method further includes obtaining steam turbine valve real time status information；When carrying out steam turbine valve control, base
In steam turbine valve real time status information, current control logic is executed.Valve real time status information is the information such as valve opening.
Control logic includes main control logic and additional control logic, and recompiling control logic data includes recompiling master control
Logical data processed and/or recompile additional control logic data.Main control logic is generally conventional PID control logic, adds
Control logic includes the control logics such as process filtering, abnormality processing, linear amendment and process judgement, specifically be can be used respectively existing
Corresponding control methods.
Control logic data, which can be performed, in the multiple groups of storage can respectively correspond different demands for control, main control logic or additional
Control logic content different from.For the executable control logic data decoded every time, according to preset numbers rule point
It does not number and stores, include corresponding with executable control logic data to be selected in the external command for setting current control logic
Number information.External command can be issued through host controller to valve control module from Field Force by industrial personal computer, be chosen
The control logic and current demand for control selected are adapted.
Embodiment 2
It is based on identical inventive concept with embodiment 1, the present embodiment is a kind of steam turbine valve control device, comprising:
Data acquisition module is recompiled, for recompiling control logic data in response to external input, acquisition is rearranged accordingly
Translate control logic data；
Control logic decoding module obtains to hold accordingly for decoding the control logic data that recompile got
Row control logic data；
Data memory module, for storing the executable control logic data for decoding obtain every time；
Control logic update module, for control logic data to can be performed accordingly according to external command setting selection, more by it
It is newly current control logic；
Control logic execution module, for carrying out steam turbine valve control according to current control logic.
Embodiment 3
The present embodiment be a kind of steam turbine valve control module, refering to what is shown in Fig. 4, module include control logic more new interface, on
Position control interface, data memory module and data processing module, data processing module include control logic decoding unit, control and patrol
Collect updating unit and control logic execution unit；
Data processing module recompiles control logic data by the way that the acquisition of control logic more new interface is externally input, and then passes through
Control logic decoding unit decodes the control logic data that recompile, and obtains that control logic number can be performed accordingly
According to, and store to data memory module；
Data processing module obtains External control logic setting instruction by upper control interface, and then is updated by control logic
Control logic data can be performed according to external command setting selection in unit accordingly, are updated to current control logic；
The control logic execution unit carries out steam turbine valve control according to current control logic.
Steam turbine valve control module further includes valve state parameter collection module and control signal output module, valve
State parameter acquisition module and control signal output module respectively include analog quantity channel and digital quantity channel；Control logic executes
Unit carries out steam turbine valve control according to the valve state parameter that valve state parameter collection module acquires, and passes through control letter
Number output module outputs control signals to exterior operator.High speed mould can be used in the analog quantity channel and digital quantity channel
Number/digital-to-analogue conversion device, high-speed figure amount photoelectric isolating device are realized, guarantee the timeliness of data acquisition and control signal output
Property, to ensure the speed of valve control response.
Data processing module uses the fpga chip with Embedded Soft Core.At this processor chips data with higher
Efficiency is managed, can further ensure the real-time and accuracy of valve control response.
Control logic more new interface uses USB interface.Compiling computer and the control logic decoding unit are based on unified
Coding and decoding rule carry out control logic coding and decoding, control logic is converted into the control that processor chips can identify
The prior art can be used in logical data processed, specific coding decoding rule.
Embodiment 4
The present embodiment is the steam turbine valve management system based on valve control module in embodiment 3, refering to what is shown in Fig. 4, system
Including compiling computer, host controller and valve control module, pass through inside between host controller and valve control module
Communication bus connection communication；
Valve control module recompiles control logic data by the acquisition compiling computer input of control logic more new interface；
Host controller receives External control logic set information, and controls mould to valve according to External control logic set information
Part sends control logic setting instruction；
Valve control module sets instruction choosing by the setting instruction of upper control interface control logic, and according to control logic
Stored accordingly executable control logic data are selected, are updated to current control logic, and then according to current control logic
Carry out steam turbine valve control.
The present embodiment is in use, control module side executes reconfigurable control logic and additional logic, upper control
Device side can not then execute or only execute a small amount of interrelated logic.
During steam turbine valve control module self-operating, specific hardware communication interface, that is, control logic is externally provided
USB port can be used for receiving special logic firmware, the interface online in more new interface.The receive process of local firmware are not to mould
Part operation itself and the operation of valve control logic have an impact.Programming software can be used to press custom protocol for compiling computer end
It writes control logic code and encodes generation local firmware；Local firmware is online in steam turbine valve control module operational process
It is sent in steam turbine valve control module by control logic more new interface.Steam turbine valve control module is automatically to acquisition
Local firmware carries out work decoding, and the logic after decoding is stored.In module operational process, control logic can be repeatedly
Programming compiles and downloads storage.
Field control personnel can be according to demand for control by host controller control valve control module, from stored more
Required control logic is selected to realize valve control in group control logic.
In valve control module, for acquiring analog quantity, the digital quantity input channel of valve running state parameter, Yi Jiyong
It can be all made of high-speed channel in the analog quantity of output control signal, digital output channel, as far as possible the acquisition of shortening input signal
And the time that output signal is established.Meanwhile valve control module itself uses high speed processor, completes module self-operating and phase
Control logic operation is closed, in addition to the valve control logic on basis, the operation of additional logic is also directly completed by module side, upper control
Device side processed does not execute or only carries out a small amount of additional logic, is executed with obtaining control logic as fast as possible in module side.
In the present embodiment, control module use site programmable gate array FPGA can be adopted in design as internal processor
It is driven with 50MHz clock frequency, FPGA is internally integrated itself Embedded Soft Core, for completing the reception of control logic firmware
Processing, the decoding execution of control logic, the acquisition of input channel, the control of output channel etc. function.FPGA uses nanosecond
Speed constantly updated by itself I/O pin On-off signal state and driving switch amount output.Analog input signal is adopted
It is acquired with high-speed AD converter, conversion frequency is higher than 250K, and conversion time is less than 5us, and acquisition data pass through height
Fast SPI dedicated bus is sent to soft core inside FPGA and carries out logical operation.Analog quantity output signals use high-speed A/D converter
It completes, output signal used time settling time about 20us.High speed processor and input and output hardware corridor ensure that be believed from input
Number acquisition, after by internal logic operation, output signal driving is finally completed, according to the complexity of internal logic, when whole
Between only need 2-5ms.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The embodiment of the present invention is described in conjunction with attached drawing above, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of steam turbine valve control method, characterized in that include:
Control logic data are recompiled in response to external input, obtains and recompiles control logic data accordingly；
The control logic data that recompile got are decoded, obtain that control logic data can be performed accordingly；
Storage decodes obtained executable control logic data every time；
Control logic data can be performed accordingly according to external command setting selection, be updated to current control logic；
Steam turbine valve control is carried out according to current control logic.
2. according to the method described in claim 1, it is characterized in that, the steam turbine valve control method further include obtain steam turbine
Valve real time status information；When carrying out steam turbine valve control, it is based on steam turbine valve real time status information, executes current control
Logic.
3. according to the method described in claim 1, it is characterized in that, control logic includes main control logic and additional control logic,
Control logic data are recompiled including recompiling main control logic data and/or recompiling additional control logic data.
4. according to the method described in claim 1, it is characterized in that, for the executable control logic data decoded every time,
It numbers and stores respectively according to preset numbers rule, include being held with to be selected in the external command for setting current control logic
The corresponding number information of row control logic data.
5. a kind of steam turbine valve control device, characterized in that include:
Data acquisition module is recompiled, for recompiling control logic data in response to external input, acquisition is rearranged accordingly
Translate control logic data；
Control logic decoding module obtains to hold accordingly for decoding the control logic data that recompile got
Row control logic data；
Data memory module, for storing the executable control logic data for decoding obtain every time；
Control logic update module, for control logic data to can be performed accordingly according to external command setting selection, more by it
It is newly current control logic；
Control logic execution module, for carrying out steam turbine valve control according to current control logic.
6. a kind of steam turbine valve control module, characterized in that including control logic more new interface, upper control interface, data
Memory module and data processing module, data processing module include control logic decoding unit, control logic updating unit and
Control logic execution unit；
Data processing module recompiles control logic data by the way that the acquisition of control logic more new interface is externally input, and then passes through
Control logic decoding unit decodes the control logic data that recompile, and obtains that control logic number can be performed accordingly
According to, and store to data memory module；
Data processing module obtains External control logic setting instruction by upper control interface, and then is updated by control logic
Control logic data can be performed according to external command setting selection in unit accordingly, are updated to current control logic；
The control logic execution unit carries out steam turbine valve control according to current control logic.
7. steam turbine valve control module according to claim 6, characterized in that further include valve state parameter acquisition mould
It is logical that block and control signal output module, valve state parameter collection module and control signal output module respectively include analog quantity
Road and digital quantity channel；Control logic execution unit is carried out according to the valve state parameter that valve state parameter collection module acquires
Steam turbine valve control, and exterior operator is output control signals to by controlling signal output module.
8. steam turbine valve control module according to claim 6, characterized in that the data processing module is used with embedding
Enter the fpga chip of the soft core of formula.
9. steam turbine valve control module according to claim 6, characterized in that the control logic more new interface uses
USB interface.
10. a kind of steam turbine valve management system based on any one of the claim 6-9 steam turbine valve control module,
It is characterized in, including compiling computer, host controller and valve control module, leads between host controller and valve control module
Cross internal communication bus connection communication；
Valve control module recompiles control logic data by the acquisition compiling computer input of control logic more new interface；
Host controller receives External control logic set information, and controls mould to valve according to External control logic set information
Part sends control logic setting instruction；
Valve control module sets instruction choosing by the setting instruction of upper control interface control logic, and according to control logic
Stored accordingly executable control logic data are selected, are updated to current control logic, and then according to current control logic
Carry out steam turbine valve control.
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| US20040010739A1 (en) * | 2002-07-12 | 2004-01-15 | Odom Brian Keith | Instrumentation system having a reconfigurable instrumentation card with programmable logic and a modular daughter card |
| US20080058962A1 (en) * | 2004-09-03 | 2008-03-06 | Derek Ward | Programmable logic controller and related electronic devices |
| CN208040459U (en) * | 2018-04-16 | 2018-11-02 | 杭州澎康自动化科技有限公司 | A kind of digital electro-hydraulic control system Simulation Control device |
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|---|---|---|---|---|
| US20030163298A1 (en) * | 1998-02-17 | 2003-08-28 | National Instruments Corporation | Reconfigurable measurement system utilizing a programmable hardware element and fixed hardware resources |
| US20030040881A1 (en) * | 2001-08-14 | 2003-02-27 | Perry Steger | Measurement system including a programmable hardware element and measurement modules that convey interface information |
| US20040010739A1 (en) * | 2002-07-12 | 2004-01-15 | Odom Brian Keith | Instrumentation system having a reconfigurable instrumentation card with programmable logic and a modular daughter card |
| US20080058962A1 (en) * | 2004-09-03 | 2008-03-06 | Derek Ward | Programmable logic controller and related electronic devices |
| CN208040459U (en) * | 2018-04-16 | 2018-11-02 | 杭州澎康自动化科技有限公司 | A kind of digital electro-hydraulic control system Simulation Control device |
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Application publication date: 20191203 |