CN105373013B - Fired power generating unit DCS system Analog control loop simulation tests system and method - Google Patents
Fired power generating unit DCS system Analog control loop simulation tests system and method Download PDFInfo
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- CN105373013B CN105373013B CN201510893948.9A CN201510893948A CN105373013B CN 105373013 B CN105373013 B CN 105373013B CN 201510893948 A CN201510893948 A CN 201510893948A CN 105373013 B CN105373013 B CN 105373013B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The present invention relates to a kind of fired power generating unit DCS system Analog control loop simulations to test system and method, including fired power generating unit Exciting-simulator system emulation platform and test DCS system, the fired power generating unit Exciting-simulator system emulation platform includes the emulation DCS system being connected with each other and simulation model, is linked between the test DCS system and simulation model using trunk；Trunk control instruction is sent to simulation model by the test DCS system, by the way that control parameter to be sent back to test DCS system and emulation DCS system simultaneously after simulation model operation, realizes control closed loop.Compared with prior art, the present invention has the dynamic simulation test for realizing analog quantity circuit, it finds and solves the problems, such as early Logical Configuration, promote the implementation quality of control function configuration, in order to control the practical debugging of system and the advantages that creating favorable conditions of smoothly coming into operation.
Description
Technical field
The present invention relates to the automation field of thermal power generation unit, more particularly, to a kind of fired power generating unit DCS system mould
Analog quantity control loop emulation test system and method.
Background technology
The automatic adjustment of unit operation parameter and control work(are mainly realized in Analog control circuit in fired power generating unit DCS system
Can, the control to parameters such as the steam temperature on upper strata, vapour pressure, generation loads is controlled from the water level, flow, rotating speed of bottom, is in addition also wrapped
The control functions such as fast cutback when including subsidiary engine device fails.Whether these control functions, which can correctly be realized, often influences
To the safe normal operation of unit, so effective functional test should be carried out before DCS system is dispatched from the factory.But at this moment DCS system is still
It is not established the link with practical object, does not form control closed loop, it is more difficult to carry out effective functional test.Analog quantity is returned at present
There are mainly two types of method, one kind is to build control object simulation model using configuration instrument in DCS system to realize work(for drive test examination
It can test (referring to patent of invention " method of fired power generating unit dcs control object simulation modeling ", the patent No.：ZL
2010 1 0507102.4), and another kind is to fetch DCS system with the Building of Simulation Model chain of engineering unit to carry out function survey
Examination.In place of the equal Shortcomings of both methods, first method is since object model complexity is various, and the calculation that configuration instrument provides
Method is limited, and can only realize control object simplifies emulation and rough simulation, influences functional test effect.Engineering in second method
Unit, which differs, has established a capital simulation model, also tends to lag behind DCS system, and same Building of Simulation Model even if building simulation model
All link (thousands of signals) is also time-consuming and laborious, can not complete emulation testing before DCS field adjustables.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of fired power generating unit DCS systems
Analog control loop simulation of uniting tests system and method.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of fired power generating unit DCS system Analog control loop simulation tests system, which is characterized in that including thermal motor
Group Exciting-simulator system emulation platform and test DCS system, the fired power generating unit Exciting-simulator system emulation platform include the emulation being connected with each other
DCS system and simulation model are linked between the test DCS system and simulation model using trunk；
Trunk control instruction is sent to simulation model by the test DCS system, by that will be controlled after simulation model operation
Parameter processed sends back to test DCS system and emulation DCS system simultaneously, realizes control closed loop.
Further include for testing DCS system and emulating the Artificial switch that switches between DCS system, the Artificial switch respectively with
Test DCS system, emulation DCS system are connected with simulation model；
After the Artificial switch is switched to test DCS system, the simulation model no longer receives emulation DCS system hair
The trunk control instruction gone out switchs to receive the trunk control instruction that test DCS system is sent, what the simulation model calculated
Control parameter is then sent to test DCS system and emulation DCS system simultaneously.
The test DCS system and the DCS system that emulation DCS system is that range is identical or range is different.
When the test DCS system DCS system different for range with emulation DCS system, the test DCS systems
Range swithching unit is equipped between system and simulation model.
The trunk control instruction that simulation model is sent to by testing DCS system includes load instruction, steam turbine pitch aperture
Instruction, the instruction of feeder rotary speed instruction, speed of feedwater, the instruction of pressure fan baffle opening, air-introduced machine baffle opening instruct, are primary
The instruction of wind turbine baffle opening, the hot and cold throttle opening instruction of coal pulverizer, condensation water pitch opening degree instruction, heater condensate pitch are opened
Degree instruction and condenser water replenishing pitch opening degree instruction.
For the test DCS system with being established between simulation model except trunk link, other signals still remain originally imitative
Link between true mode and emulation DCS system, and pass through and emulate DCS system and behave simulation model.
A kind of fired power generating unit DCS system Analog control loop simulation test method, which is characterized in that including following step
Suddenly：
1) it establishes test DCS system and the trunk of simulation model links；
2) emulation platform is run so that simulation model is in the load setting of setting；
3) trunk link signal is switched into test DCS system, the simulation model starts to receive test DCS system hair
The trunk control instruction signal gone out；
4) Obj State after simulation model operation and operating parameter send test DCS system back to, form control closed loop；
5) emulation testing is carried out to Analog control circuit in the case where controlling closed loop, find and eliminated present in control logic
Problem tentatively sets control parameter, improves configuration work quality.
Compared with prior art, the present invention realizes a kind of completely new analog quantity loop simulation test method, by general
Fired power generating unit Exciting-simulator system emulation platform, establishes the trunk link between DCS system and Universal Simulation Model, and model accuracy is significantly high
In the model built with DCS configuration instruments, control closed loop can be quickly and easily formed by the way of trunk link, realizes simulation
The dynamic simulation test in circuit is measured, finds and solves the problems, such as early Logical Configuration, promote the reality of control function configuration
Quality is applied, the practical debugging of system and smooth come into operation create favorable conditions in order to control.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is the part of the embodiment rather than whole embodiments of the present invention.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, should all belong to the scope of protection of the invention.
Key and the most important condition to Analog control circuit progress Validity Test are the closed loops of control loop to be established, i.e.,
Control instruction will issue some control object, so that operating parameter changes after the state change of control object, analog quantity is returned
Road adjusts control instruction further according to this Parameters variation, forms closed loop.If without this closed loop, only by static logical check
The problem of cannot effectively finding control configuration, increases the risk that unit equipment moves in fact.Aforementioned first method can only be real
The rough emulation of existing control object, operating parameter variation can only be a kind of approximate simulation caused by Obj State changes, and can influence
Test effect.In addition, for different DCS systems, need to build to simplify again with the DCS tools according to actual set to emulate mould
Type, it is also necessary to be debugged to simplified model.The accurate simulation of control object can be realized with second method, but simulation model is built
If often lagging behind DCS system, and establish all link time and effort consumings.
It is typically all to use super (super-) critical technology in view of newly-built fired power generating unit, it completely can be by General Simulation Platform
To represent engineering unit, and using a kind of completely new trunk link method, main control instruction is sent to by test DCS system
Emulation platform and simulation model by the way that related operating parameter is returned to test DCS system after model calculation, realize that control is closed
Ring.After in this way, the simulation accuracy of control object will be much higher than the simulation object that DCS tools are built, additionally, due to
Link between test DCS system and simulation model can very easily be realized using trunk on-link mode (OLM), moved for analog quantity circuit
State calibration tape carrys out convenience.
As shown in Figure 1, a kind of fired power generating unit DCS system Analog control loop simulation test system, including fired power generating unit
Exciting-simulator system emulation platform 1 and test DCS system 2, the fired power generating unit Exciting-simulator system emulation platform 1 include the emulation being connected with each other
DCS system 11 and simulation model 12.
The invention also includes for testing DCS system and emulating the Artificial switch 3 switched between DCS system, which opens
It closes 3 and connect with test DCS system 2, emulation DCS system 11 and simulation model 12 respectively
Exciting-simulator system emulation platform includes emulation DCS system and simulation model two parts, and mould is emulated in addition to test DCS system is same
It is established between type except trunk link, other signals still maintain original simulation model and emulate the link between DCS, and pass through imitative
True DCS gets up model running, solves the initialization matter of simulation model.In addition, test unit capacitance grade can with swash
The formula emulation platform of encouraging differs, as long as carrying out appropriate range swithching to trunk link signal at this time.
The step of carrying out emulation testing to Analog control circuit is as follows：
The trunk link of test DCS system and simulation model is established, carries out appropriate range swithching when necessary；
Run emulation platform so that emulation unit is in certain load setting；
Trunk link signal is switched into test DCS system, simulation model starts the trunk that acceptance test DCS system is sent out
Command signal；
Obj State and operating parameter after model calculation send test DCS system back to, form control closed loop；
Emulation testing is carried out to Analog control circuit in the case where controlling closed loop, finds and eliminate to ask present in control logic
Topic tentatively sets control parameter, improves configuration work quality.
For a certain newly-built 600MW ultra supercritical coal-fired unit, DCS gives birth to Ovation systems using Ai Mo, completes
After DCS control functions and monitored picture configuration, DCS system Analog control circuit into Mobile state is tested, checks control function
And whether front and back link is correct, to find and solve the problems, such as early, shortens practical debug time.
By the general fired power generating unit Exciting-simulator system emulation platform of the 1000MW ultra supercriticals for having built completion, emulation mould is established
By the way of trunk link, emulation is sent to by testing DCS system for data exchange channels between type and test DCS system
The control instruction of model mainly has load instruction, steam turbine pitch opening degree instruction, feeder rotary speed instruction, speed of feedwater to refer to
It enables, the instruction of pressure fan baffle opening, air-introduced machine baffle opening instructs, primary air fan baffle opening instructs, the hot and cold air door of coal pulverizer
Opening degree instruction, condensation water pitch opening degree instruction, heater condensate pitch opening degree instruction, condenser water replenishing pitch opening degree instruction etc. are main
Want command signal.
In addition, there is provided Artificial switch, after input is switched, simulation model no longer receives the trunk that emulation DCS is sent out and refers to
It enables, but switchs to the instruction that acceptance test DCS is sent, the control parameter that model calculates then is sent to and tests DCS and emulation simultaneously
DCS system, analog quantity loop simulation test system are shown in schematic diagram 1.In this way after testing that control instruction changes in DCS, warp
Crossing simulation model operation control parameter can change and be back to test DCS system, so as to fulfill Analog control circuit
Closed loop can carry out artificial debugging to Analog control circuit.
By taking hearth vacuum control circuit as an example, after putting into Artificial switch, model starts air-introduced machine stator blade in acceptance test DCS
The opening degree instruction of baffle, calculating combustion chamber draft by simulation model after aperture variation can change, which can pass test back
DCS system, so as to form control closed loop.Other Analog control circuits are handled in a similar way, so as to effective
The artificial debugging of main analog amount control loop is carried out, including control loops such as unit cooperative control, RB fast cutbacks.
Since emulation platform is based on 1000MW extra-supercritical units, and the engineering unit of practical DCS system is
6000MW units, therefore appropriate range conversion will be carried out when being transmitted with parameter by instructing.In addition when carrying out emulation mode switching,
It carries out test DCS system and emulates the switching tracking between DCS system, realize no-harass switch, it is ensured that test DCS and emulation are flat
Platform works normally.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (6)
1. a kind of fired power generating unit DCS system Analog control loop simulation tests system, which is characterized in that swashs including fired power generating unit
Formula emulation platform and test DCS system are encouraged, the fired power generating unit Exciting-simulator system emulation platform includes the emulation DCS systems being connected with each other
System and simulation model, are linked between the test DCS system and simulation model using trunk；
Trunk control instruction is sent to simulation model by the test DCS system, by joining control after simulation model operation
Number sends back to test DCS system and emulation DCS system simultaneously, realizes control closed loop；
The test system further includes to test DCS system and emulate the Artificial switch switched between DCS system, the emulation
Switch is connect respectively with test DCS system, emulation DCS system and simulation model；
After the Artificial switch is switched to test DCS system, the simulation model no longer receives what emulation DCS system was sent out
Trunk control instruction switchs to receive the trunk control instruction that test DCS system is sent, the control that the simulation model calculates
Parameter is then sent to test DCS system and emulation DCS system simultaneously.
2. a kind of fired power generating unit DCS system Analog control loop simulation test system according to claim 1, feature
It is, the test DCS system and the DCS system that emulation DCS system is that range is identical or range is different.
3. a kind of fired power generating unit DCS system Analog control loop simulation test system according to claim 2, feature
It is, when the test DCS system DCS system different for range with emulation DCS system, the test DCS system
Range swithching unit is equipped between simulation model.
4. a kind of fired power generating unit DCS system Analog control loop simulation test system according to claim 1, feature
It is, the trunk control instruction that simulation model is sent to by testing DCS system includes load instruction, steam turbine pitch aperture refers to
It enables, the instruction of feeder rotary speed instruction, speed of feedwater, pressure fan baffle opening instructs, air-introduced machine baffle opening instructs, First air
The hot and cold throttle opening instruction of machine baffle opening degree instruction, coal pulverizer, condensation water pitch opening degree instruction, heater condensate pitch aperture
Instruction and condenser water replenishing pitch opening degree instruction.
5. a kind of fired power generating unit DCS system Analog control loop simulation test system according to claim 1, feature
It is, with being established between simulation model except trunk link, other signals still maintain originally to emulate mould the test DCS system
Link between type and emulation DCS system, and pass through and emulate DCS system and behave simulation model.
6. a kind of implement fired power generating unit DCS system Analog control loop simulation test method described in claim 1, feature
It is, includes the following steps：
1) it establishes test DCS system and the trunk of simulation model links；
2) emulation platform is run so that simulation model is in the load setting of setting；
3) trunk link signal is switched into test DCS system, the simulation model starts to receive what test DCS system was sent out
Trunk control instruction signal；
4) Obj State after simulation model operation and operating parameter send test DCS system back to, form control closed loop；
5) emulation testing is carried out to Analog control circuit in the case where controlling closed loop, finds and eliminate to ask present in control logic
Topic tentatively sets control parameter, improves configuration work quality.
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| CN108229182B (en) * | 2017-11-29 | 2021-11-23 | 北京广利核***工程有限公司 | Method and system for verifying picture configuration by using information isomorphism |
| CN108536111B (en) * | 2018-07-12 | 2019-05-17 | 华能烟台发电有限公司 | Control unit in thermal control DCS is avoided to instruct the processing method of zero after restarting |
| CN110768871B (en) * | 2019-10-29 | 2021-07-27 | 北京广利核***工程有限公司 | Test method and system for automatically counting data transmission correctness of DCS (distributed control system) |
| CN111427781B (en) * | 2020-03-19 | 2023-07-21 | 北京广利核***工程有限公司 | Simulation and entity compatible logic function test method and platform |
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| US8527252B2 (en) * | 2006-07-28 | 2013-09-03 | Emerson Process Management Power & Water Solutions, Inc. | Real-time synchronized control and simulation within a process plant |
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| CN101446807A (en) * | 2008-08-15 | 2009-06-03 | 中国电力科学研究院 | Realization method for heat-engine plant speed regulating system model in power system simulation |
| CN102446233A (en) * | 2010-10-15 | 2012-05-09 | 华东电力试验研究院有限公司 | Method for simulating and modeling controlled object in distributed control system of thermal power generating unit |
| CN103439890A (en) * | 2013-08-19 | 2013-12-11 | 中国神华能源股份有限公司 | Simulation system and method based on one-machine virtual DPU |
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