CN104896961B - The power coordination control device of multiple electric furnace operations - Google Patents
The power coordination control device of multiple electric furnace operations Download PDFInfo
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- CN104896961B CN104896961B CN201510224673.XA CN201510224673A CN104896961B CN 104896961 B CN104896961 B CN 104896961B CN 201510224673 A CN201510224673 A CN 201510224673A CN 104896961 B CN104896961 B CN 104896961B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a kind of power coordination control device of multiple electric furnace operations, including：Multiple setting modules of setting power setting value；Obtain multiple acquisition modules of actual power value；Calculate the first computing module of control error and error rate；Calculate the second computing module of composition error；Lifting amplitude is calculated according to composition error and error rate, and drives the drive module of the electrode of electric furnace.The device of the embodiment of the present invention, according to the control error and error rate calculating composition error of multiple electric furnaces, and the error rate of the composition error according to each electric furnace and each electric furnace calculates the lifting amplitude of each electric furnace electrode, realize according to lifting amplitude driving electrodes, fully take into account the overall power fluctuation of whole smeltery, control accuracy is improved, the reliability of electric power system is better ensured that.
Description
Technical field
The present invention relates to technical field of smelting, more particularly to a kind of power coordination control device of multiple electric furnace operations.
Background technology
Used as a kind of large power-consuming equipment, its power swing often constitutes impact to electrical network to electric furnace.Wherein, due to power
Caused by the impact that fluctuates and produce, voltage pulsation, harmonic wave etc. affect, and easily have a strong impact on the quality of power supply.For example, especially
For the system of self power generation isolated power grid, its impact is even more serious, or even may result in generating set off-the-line, and electric power system is collapsed.
Wherein, as the power swing of electric furnace and the control of electrode are closely related, so being automatically controlled by improving electrode
Effect can reduce fluctuate degree.However, when a smeltery has multiple electric furnaces, its power swing is each furnace power
Fluctuation superposition.In correlation technique, electrode controls all to be with single furnace power setting value as control targe, does not consider whole smelting
The overall power fluctuation of factory, its excessive general power fluctuation, often leads to electric power system and is affected, it is impossible to which ensure system can
Lean on property.
Content of the invention
It is contemplated that at least solving one of technical problem in above-mentioned correlation technique to a certain extent.
For this purpose, it is an object of the invention to proposing a kind of power coordination control device of multiple electric furnace operations, the device energy
Enough accuracy for improving control, better ensure that the reliability of system.
For reaching above-mentioned purpose, the embodiment of the present invention proposes a kind of power coordination control device of multiple electric furnace operations,
Including：Multiple setting modules, for setting the set value of the power P of the plurality of electric furnace respectivelyseti, wherein, i is to be less than more than zero
It is equal to the positive integer of n；Multiple acquisition modules, for obtaining actual power value P of the plurality of electric furnace respectivelyacti；First calculates
Module, for respectively according to the set value of the power P of i-th electric furnacesetiWith actual power value PactiCalculate i-th electric furnace
Control error and error rate；Second computing module, for the control error according to the plurality of electric furnace and error rate
Calculate the composition error of i-th electric furnace；And drive module, for composition error and the error according to i-th electric furnace
Rate of change calculates the lifting amplitude of electrode, and drives the electrode of i-th electric furnace according to the lifting amplitude.
The power coordination control device of the multiple electric furnace operations for proposing according to embodiments of the present invention, first by setting each
The set value of the power of electric furnace, and the actual power value of each electric furnace is obtained, so as to calculate the control error and mistake of each electric furnace
Difference rate of change, secondly by the composition error that the control error according to multiple electric furnaces and error rate calculate each electric furnace, from
And the lifting amplitude of each electric furnace electrode is calculated, realize, according to lifting amplitude driving electrodes, fully taking into account whole smeltery
Overall power fluctuates, and improves control accuracy, better ensures that the reliability of electric power system.
In addition, the power coordination control device of multiple electric furnace operations according to the above embodiment of the present invention can also have such as
Lower additional technical characteristic：
Further, in one embodiment of the invention, the control for calculating i-th electric furnace according to below equation is missed
Difference and error rate：
ei(t)=Pseti(t)-Pacti(t),
dei(t)=ei(t)-ei(t-1), i=1,2 ... n,
Wherein, eiT () is control error, deiT () is error rate, t represents that moment, i represent electric furnace.
Further, in one embodiment of the invention, the composition error of i-th electric furnace is calculated according to below equation：
Wherein, k≤1 is weight coefficient.
Further, in one embodiment of the invention, the electrode of i-th electric furnace is calculated according to below equation
Lifting amplitude：
D (t)=KP Ei(t)+KI·dei(t),
Wherein, KP is proportional control factor, and KI is derivative control coefficient.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
Substantially and easy to understand, wherein：
Fig. 1 is the structural representation of the power coordination control device of the multiple electric furnace operations according to one embodiment of the invention
Figure；
Fig. 2 is the flow chart of the power coordination control method of the multiple electric furnace operations according to one embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, " multiple " are meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be machine
Tool connection, or electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in bright.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included, it is also possible to be not directly contact including the first and second features but by it
Between other characterisation contact.And, fisrt feature second feature " on ", " top " and " above " include that first is special
Levy directly over second feature and oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or be merely representative of
Fisrt feature level height is less than second feature.
The power coordination control device of the multiple electric furnace operations for proposing according to embodiments of the present invention is described with reference to the accompanying drawings.
With reference to shown in Fig. 1, the control device 10 includes：Multiple setting modules 100, multiple acquisition modules 200, the first computing module 300,
Second computing module 400 and drive module 500.
Wherein, set value of the power P of i-th setting module 100 for i-th electric furnace of settingseti, wherein, i is more than zero
Positive integer less than or equal to n.I-th acquisition module 200 is used for actual power value P for obtaining i-th electric furnaceacti.First calculates
Module 300 is used for set value of the power P respectively according to i-th electric furnacesetiWith actual power value PactiCalculate the control of i-th electric furnace
Error processed and error rate.Second computing module 400 is used for control error and error rate calculating according to multiple electric furnaces
The composition error of i-th electric furnace.Drive module 500 is used for composition error and error rate calculating i-th according to i-th electric furnace
The lifting amplitude of individual electric furnace electrode, and the electrode of i-th electric furnace is driven according to lifting amplitude.The control device of the embodiment of the present invention
The overall power fluctuation of whole smeltery is fully taken into account, control accuracy is improved, is better ensured that the reliability of electric power system.
Specifically, in one embodiment of the invention, set total n platforms electric furnace first, secondly set multiple electric furnaces respectively
Set value of the power Pseti, in short, the set value of the power of i-th electric furnace is Pseti.
Further, in one embodiment of the invention, the set value of the power of i-th electric furnace is Pseti, then obtain respectively
Corresponding actual power value is taken for Pacti.
Further, in one embodiment of the invention, the control for calculating i-th electric furnace according to below equation respectively is missed
Difference and error rate：
ei(t)=Pseti(t)-Pacti(t), (1)
dei(t)=ei(t)-ei(t-1), i=1,2 ... n, (2)
Wherein, eiT () is control error, deiT () is error rate, t represents the moment.
Specifically, in one embodiment of the invention, the set value of the power of i-th electric furnace is being set as Pseti, and obtain
Take its power actual value PactiAfterwards, control error and the error change of i-th electric furnace are calculated according to formula (1) and formula (2)
Rate.
Further, in one embodiment of the invention, the composition error of i-th electric furnace is calculated according to below equation：
Wherein, k≤1 is weight coefficient.
Further, in one embodiment of the invention, the control error and error rate for calculating many electric furnaces it
Afterwards, composition error E of i-th electric furnace is calculated according to formula (3)i(t).
In addition, in an example of the present invention, k≤1 is weight coefficient.Wherein, k is less represents that overall power fluctuates more
Little, k is bigger, and the control effect for representing single electric furnace is better, therefore k values size need to be according to Practical Project actual conditions therebetween
Carry out compromise to select.
Further, in one embodiment of the invention, the liter range of decrease of i-th electric furnace electrode is calculated according to below equation
Value：
di(t)=KP Ei(t)+KI·dei(t), (4)
Wherein, KP is proportional control factor, and KI is derivative control coefficient.
Specifically, in one embodiment of the invention, composition error E is being obtainedi(t) and error rate dei(t) it
Afterwards, lifting amplitude d of i-th electric furnace electrode is calculated according to formula (4)i, so that it is determined that rise fall of electrodes amplitude (t).
In addition, in one embodiment of the invention, KP is proportional control factor, and KI is derivative control coefficient.Wherein, KP
Can be adjusted according to Actual Control Effect of Strong with KI.It is being calculated rise fall of electrodes amplitude diAfter (t), electrode liter is driven by it
Drop, and then make furnace power adjusted.
In one particular embodiment of the present invention, with reference to shown in Fig. 2, the control flow of the embodiment of the present invention is concrete such as
Under：
S201, sets each furnace power setting value P respectivelyseti.
First, the set value of the power P of multiple electric furnaces is set respectivelyseti.
S202, actual power are measured., measured by actual power, so as to obtain the actual power value of multiple electric furnaces respectively
Pacti.
S203, seeks each electric furnace error ei(t) and rate of change dei(t).
Specifically, respectively according to the set value of the power P of i-th electric furnacesetiWith actual power value PactiCounted by formula (1)
Calculate the control error e of i-th electric furnacei(t) and error rate dei(t).
S204, seeks each electric furnace composition error Ei(t).
Further, according to the control error e of multiple electric furnacesi(t) and error rate deiT () is calculated by formula (2)
Composition error E of i-th electric furnacei(t).
S205, calculates electrode lifting/lowering amplitude d of i-th electric furnacei(t).
Further, according to composition error E of i-th electric furnacei(t) and error rate deiT () is calculated by formula (3)
Lifting amplitude d of i-th electric furnace electrodei(t).
S206, driving electrodes are lifted/are declined.According to lifting amplitude di(t) driving electrodes, realize driving electrodes lifted or under
Drop.
The power coordination control device of the multiple electric furnace operations for proposing according to embodiments of the present invention, first by setting each
The set value of the power of electric furnace, and the actual power value of each electric furnace is obtained, so as to calculate the control error and mistake of each electric furnace
Difference rate of change, secondly by the composition error that the control error according to multiple electric furnaces and error rate calculate each electric furnace, from
And the lifting amplitude of each electric furnace electrode is calculated, realize, according to lifting amplitude driving electrodes, introducing in the control of each electric furnace
Overall power Con trolling index so that while meeting control to monomer electric furnace and requiring, overall power fluctuation are also controlled, and are filled
Divide the overall power for considering whole smeltery to fluctuate, improve control accuracy, better ensure that the reliability of electric power system.
In flow chart or here any process described otherwise above or method description are construed as, expression includes
One or more for realizing specific logical function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, can not wherein press the suitable of shown or discussion
Sequence, including according to involved function by basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or here logic described otherwise above and/or step, for example, it is possible to be considered as to use
In the order list of the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, include processor system or other can hold from instruction
Row system, device or equipment instruction fetch the system of execute instruction) use, or with reference to these instruction execution systems, device or set
Standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
The dress that defeated program is used for instruction execution system, device or equipment or with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：There is the electricity of one or more wirings
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program thereon or other are suitable
Medium, because for example by carrying out optical scanner to paper or other media edlin, interpretation can then be entered or if necessary with which
His suitable method is processed to electronically obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realizing.For example, if realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realizing：There is the logic gates for being used for realizing logic function to data-signal
Discrete logic, the special IC with suitable combinational logic gate circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
Suddenly the hardware that can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, each functional unit in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated mould
Block both can be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit using in the form of software function module realize and as independent production marketing or use when, it is also possible to be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy described with reference to the embodiment or example
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example are necessarily referred to.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is in the principle and objective without departing from the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (4)
1. the power coordination control device that a kind of multiple electric furnaces run, it is characterised in that include：
Multiple setting modules, for setting the set value of the power P of the plurality of electric furnace respectivelyseti, wherein, i be more than zero less than etc.
Positive integer in n；
Multiple acquisition modules, for obtaining actual power value P of the plurality of electric furnace respectivelyacti；
First computing module, for respectively according to the set value of the power P of i-th electric furnacesetiWith actual power value PactiCalculate described
The control error of i-th electric furnace and error rate；
Second computing module, calculates the comprehensive of i-th electric furnace for the control error according to the plurality of electric furnace and error rate
Close error；And
Drive module, for the liter range of decrease that the composition error according to i-th electric furnace and the error rate calculate electrode
Value, and the electrode of i-th electric furnace is driven according to the lifting amplitude.
2. the power coordination control device that multiple electric furnaces run as claimed in claim 1, it is characterised in that according to below equation
Calculate control error and the error rate of i-th electric furnace：
ei(t)=Pseti(t)-Pacti(t),
dei(t)=ei(t)-ei(t-1), i=1,2 ... n,
Wherein, eiT () is control error, deiT () is error rate, t represents that moment, i represent electric furnace.
3. the power coordination control device that multiple electric furnaces run as claimed in claim 1 or 2, it is characterised in that according to following
Formula calculates the composition error of i-th electric furnace：
Wherein, k≤1 is weight coefficient.
4. the power coordination control device that the multiple electric furnaces as described in any one of claim 1-3 run, it is characterised in that according to
Below equation calculates the lifting amplitude of the electrode of i-th electric furnace：
D (t)=KP Ei(t)+KI·dei(t),
Wherein, KP is proportional control factor, and KI is derivative control coefficient.
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| CN105552935B (en) * | 2016-02-26 | 2018-05-22 | 中国恩菲工程技术有限公司 | Furnace power control method and device |
| CN107576210B (en) * | 2017-10-20 | 2023-04-07 | 中国恩菲工程技术有限公司 | Control device for ore-smelting electric furnace |
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| JP3610690B2 (en) * | 1996-09-03 | 2005-01-19 | 富士電機システムズ株式会社 | Electrode lifting control device for AC arc furnace |
| CN101441035B (en) * | 2009-01-07 | 2010-10-27 | 中冶东方工程技术有限公司 | Automatic control method of ore furnace smelting electric institution |
| CN101968318B (en) * | 2010-09-13 | 2012-09-19 | 中国恩菲工程技术有限公司 | Method for automatically controlling power of electric furnace |
| CN103471412B (en) * | 2013-09-26 | 2015-04-08 | 中国恩菲工程技术有限公司 | Electrode power control method and system for electric furnace |
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