CN107586954B - Ore-smelting electric furnace control method - Google Patents
Ore-smelting electric furnace control method Download PDFInfo
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Abstract
The disclosure provides a kind of ore-smelting electric furnace control method, belongs to technical field of smelting.The ore-smelting electric furnace control method includes: to obtain complex optimum index according to the metal temperature calculation of electrode voltage, electrode resistance, preset temperature and actual measurement；Optimal voltage value and optimal resistance value are acquired according to the complex optimum index.The disclosure is by calculating complex optimum index, and optimal voltage value and optimal resistance value are further calculated according to complex optimum index, so as to carry out vehicle air-conditioning to ore-smelting electric furnace as control parameter according to the optimal voltage value and optimal resistance value acquired, the product quality and operation stability of equipment are improved, while reducing energy consumption.
Description
Technical field
This disclosure relates to technical field of smelting, in particular to a kind of ore-smelting electric furnace control method.
Background technique
Ore-smelting electric furnace is a kind of important smelting equipment, using the ore of high resistivity as raw material, during the work time generally
The lower part of electrode is embedded in inside material in electric furnace (abbreviation furnace charge).Its principle of heating is: furnace charge when passing through furnace charge using electric current
The heat that electric arc between heat and electrode and furnace charge that resistance generates generates generates energy because of the resistance of furnace charge and carrys out melting gold
Belong to.
In use, the horizontal height of the operation of ore-smelting electric furnace determines product quality, energy consumption and operation stability etc.
Index.The control parameters such as the voltage and electrode impedance of ore-smelting electric furnace are usually determined by operative employee by experience, are caused to artificial
Degree of dependence is excessively high, and control method is unable to get a wide range of popularization, and control performance is unable to get guarantee.
Therefore, there is also the places that has much room for improvement for technical solution in the prior art.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of ore-smelting electric furnace control method, and then overcomes to a certain extent in the prior art
It is excessively high to artificial degree of dependence, the problem of control performance is unable to get guarantee.
Other characteristics and advantages of the disclosure will be apparent from by the following detailed description, or partially by this public affairs
The practice opened and acquistion.
According to one aspect of the disclosure, a kind of ore-smelting electric furnace control method is provided, comprising:
Complex optimum is obtained according to the metal temperature calculation of electrode voltage, electrode resistance, preset temperature and actual measurement
Index；
Optimal voltage value and optimal resistance value are acquired according to the complex optimum index.
In a kind of exemplary embodiment of the disclosure, according to electrode voltage, electrode resistance, preset temperature and practical survey
The metal temperature calculation of amount obtains complex optimum index
Thermal balance index, calculation formula are calculated according to the electrode voltage, the electrode resistance and heating power are as follows:
Wherein Index1 is thermal balance index, and U is electrode voltage, and R is electrode resistance, and P is that material in electric furnace is added to melt
The heating power of required consumption.
In a kind of exemplary embodiment of the disclosure, according to electrode voltage, electrode resistance, preset temperature and practical survey
The metal temperature calculation of amount obtains complex optimum index further include:
Thermal balance index is calculated according to the preset temperature, the metal temperature of the actual measurement and the electrode resistance,
Calculation formula are as follows:
Wherein Index2 is heat distribution index, TcFor the metal temperature of actual measurement, TsFor preset temperature.
In a kind of exemplary embodiment of the disclosure, according to electrode voltage, electrode resistance, preset temperature and practical survey
The metal temperature calculation of amount obtains complex optimum index further include:
Electrical fluctuation index, calculation formula are calculated according to the electrode voltage and the electrode resistance are as follows:
Wherein Index3 is electrical fluctuation index.
In a kind of exemplary embodiment of the disclosure, according to electrode voltage, electrode resistance, preset temperature and practical survey
The metal temperature calculation of amount obtains complex optimum index further include:
The complex optimum is calculated according to the thermal balance index, the heat distribution index and the electrical fluctuation index to refer to
Mark, calculation formula are as follows:
Index=min { K1*Index1+K2*Index2+K3*Index3 },
Wherein Index is complex optimum index, and K1, K2, K3 is weighting coefficient, and K1, K2, K3 ∈ (0,1).
In a kind of exemplary embodiment of the disclosure, optimal voltage value and optimal is acquired according to the complex optimum index
Resistance value includes:
According to the complex optimum index in conjunction with the default value range of the electrode voltage, the electrode resistance it is default
Value range, electrode voltage when acquiring complex optimum index minimum is the optimal voltage value, acquires complex optimum index most
The resistive voltage of hour is the optimal resistance value.
The ore-smelting electric furnace control method that some embodiments of the disclosure provide goes forward side by side one by calculating complex optimum index
Optimal voltage value and optimal resistance value is calculated according to complex optimum index in step, so as to according to the optimal voltage value acquired
Vehicle air-conditioning is carried out to ore-smelting electric furnace as control parameter with optimal resistance value, improves the product quality and operation of equipment
Stability, while reducing energy consumption.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 shows a kind of schematic diagram of the ore-smelting electric furnace control device provided in the first embodiment of the present disclosure.
Fig. 2 shows a kind of schematic diagrames of the ore-smelting electric furnace control device provided in the second embodiment of the present disclosure.
Fig. 3 shows a kind of step flow chart of ore-smelting electric furnace control method of third embodiment of the present disclosure offer.
Fig. 4 shows the step flow chart of step S31 in the third embodiment of the present disclosure.
Fig. 5 shows the step flow chart that the electronic equipment provided in the fourth embodiment of the present disclosure executes operational order.
Fig. 6 shows the structural schematic diagram of the computer system of the electronic equipment provided in disclosure another embodiment.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Attached drawing is only the disclosure
Schematic illustrations, be not necessarily drawn to scale.Identical appended drawing reference indicates same or similar part in figure, thus
Repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In mode.In the following description, many details are provided to provide and fully understand to embodiment of the present disclosure.So
And it will be appreciated by persons skilled in the art that one in the specific detail can be omitted with technical solution of the disclosure
Or more, or can be using other methods, constituent element, device, step etc..In other cases, it is not shown in detail or describes
Known features, method, apparatus, realization, material or operation are to avoid a presumptuous guest usurps the role of the host and all aspects of this disclosure is made to become mould
Paste.
Fig. 1 shows a kind of schematic diagram of the ore-smelting electric furnace control device provided in the first embodiment of the present disclosure, the mine thermoelectricity
Furnace control device is used to optimize the control parameter of the ore-smelting electric furnace in smelting process.
As shown in Figure 1, including: that comprehensive index calculation module 110 and optimal value solve in the ore-smelting electric furnace control device 100
Module 120, wherein comprehensive index calculation module 110 is configured to according to electrode voltage, electrode resistance, preset temperature and practical survey
The metal temperature calculation of amount obtains complex optimum index；Optimal value solves module 120 and is configured to be acquired according to complex optimum index
Optimal voltage value and optimal resistance value.
In the process of running due to ore-smelting electric furnace, complex optimum index is obtained by carrying out COMPREHENSIVE CALCULATING to indices,
And the optimal value of electrode voltage and electrode resistance is sought using complex optimum index, so as to according to electrode voltage and electrode electricity
The optimal value of resistance is controlled, and manual control is overcome not can guarantee the defect of performance.
Fig. 2 shows a kind of schematic diagram of the ore-smelting electric furnace control device provided in the second embodiment of the present disclosure, the mine thermoelectricity
Furnace control device is used to optimize the control parameter of the ore-smelting electric furnace in smelting process.
As shown in Fig. 2, including: that comprehensive index calculation module 210 and optimal value solve in the ore-smelting electric furnace control device 200
Module 220, wherein comprehensive index calculation module 210 is configured to according to electrode voltage, electrode resistance, preset temperature and practical survey
The metal temperature calculation of amount obtains complex optimum index；Optimal value solves module 220 and is configured to be acquired according to complex optimum index
Optimal voltage value and optimal resistance value.Comprehensive index calculation module 210 includes: thermal balance index computational submodule 211, heat distribution
Index computational submodule 212, electrical fluctuation index computational submodule 213 and weighted calculation submodule 214.
It is required according to thermal balance, when electric furnace electrode output power and the heating power consumed needed for material melts is added in furnace
When equal, illustrate that thermal energy is fully used, thermal balance index is also optimal.But in practical smelting process, it is difficult to ensure that furnace
Both electrode output power is just equal with the heating power that consumption needed for material thawing in furnace is added, therefore need to minimize
Difference, i.e. thermal balance index Index1 are the smaller the better.
Thermal balance index computational submodule 211 is configured to be calculated according to electrode voltage, electrode resistance and heating power hot flat
Weigh index, calculation formula are as follows:
Formula (1):
Wherein Index1 is thermal balance index, and U is electrode voltage, and R is electrode resistance, and P is that material in electric furnace is added to melt
The heating power of required consumption.
Usually in mine heat furnace smelting production, since ore brings impurity into, the smelting of most of kinds, which needs to use, slag
Method.Slagprocess smelting need to be incorporated flux appropriate in furnace charge, the impurity for bringing ore into generated in smelting process fusing point it is low,
Basicity be suitable for and the good clinker of mobile performance, after coming out of the stove be convenient for clinker and product lock out operation.
Electrode determines the heat distribution of electric furnace, slotting deep position deeper furnace bottom temperature of the electrode in furnace charge in the slotting deep position of furnace charge
Degree is higher, and the metal temperature given off is higher, on the contrary then lower.If metal temperature is excessively high to will lead to energy loss increase, no
Conducive to energy conservation, metal fluidity can be made to be deteriorated if too low, be unfavorable for discharging, thus metal temperature should control it is ideal at it
Preset temperature.According to the law of resistance, the impedance of the slotting depth of electrode and electrode is inversely.
Heat distribution index computational submodule 212 is configured to according to preset temperature, the metal temperature of actual measurement and electrode electricity
Resistance calculates thermal balance index, calculation formula are as follows:
Formula (2):
Wherein Index2 is heat distribution index, TcFor the metal temperature of electric furnace actual measurement when discharging metal, TsIt is default
The size of temperature, the preset temperature need to be determined according to the type of metal.
The electrical fluctuation of electrode is expressed as
Formula (3):
Electrical fluctuation index computational submodule 213 is configured to calculate electrically to fluctuate according to electrode voltage and electrode resistance to refer to
Mark, calculation formula are as follows:
Formula (4):
Wherein Index3 is electrical fluctuation index.
Based on above-mentioned, obtain according to after thermal balance index, heat distribution index and electrical fluctuation index, weighted calculation submodule
214 calculate complex optimum index, calculation formula further according to thermal balance index, heat distribution index and electrical fluctuation index are as follows:
Formula (5): Index=min { K1*Index1+K2*Index2+K3*Index3 }, i.e.,
Wherein Index is complex optimum index, and K1, K2, K3 is weighting coefficient, specifically, K1 is thermal balance index
Weighting coefficient, K2 are the weighting coefficient of heat distribution index, and K3 is the weighting coefficient of electrical fluctuation index, and K1, K2, K3 ∈ (0,
1), the value of these three weighting coefficients can be adjusted according to Actual Control Effect of Strong.
Optimal value solves default value range of the module 220 according to complex optimum index combination electrode voltage, electrode resistance
Default value range, electrode voltage when acquiring complex optimum index minimum is optimal voltage value, acquires complex optimum index
Resistive voltage when minimum is optimal resistance value.
Wherein the value of electrode voltage U is determined by the load tapchanging gear of furnace transformer, usually 20 to 35 grades, voltage
Value range is 100V~1000V or 100V~2000V, needs to select different voltage gears according to metal smelting.Electrode resistance R
Value range (about 1m Ω~100m Ω) it is related to the property of smelting material, can pass through empirical data determine.
If electrode voltage range U are as follows: U ∈ { U1,U2,…Un, wherein U1,U2,…UnIt is each for furnace transformer on-load voltage regulation
The corresponding phase voltage of gear, if electrode impedance range are as follows: Rmin<R<Rmax.Respectively by U1,U2,…UnBring formula (5) into, and in Rmin<
R<RmaxWith the value of fixed step size step by step calculation Index in range, the corresponding U when Index minimumnIt is required optimal with R
Solution, i.e. optimal voltage value and optimal resistance value.It should be noted that fixed step size here can be maximum resistance value and minimum
The 1%~5% of the difference of resistance value.
In conclusion ore-smelting electric furnace control device provided in this embodiment, is obtained by carrying out COMPREHENSIVE CALCULATING to indices
To complex optimum index, and the optimal value of electrode voltage and electrode resistance is sought using complex optimum index, so as to according to electricity
The optimal value of pole tension and electrode resistance is controlled, and manual control is overcome not can guarantee the defect of performance.
Fig. 3 shows a kind of step flow chart of ore-smelting electric furnace control method of third embodiment of the present disclosure offer, for excellent
Change the control parameter of the ore-smelting electric furnace in smelting process.
As shown in figure 3, in step S31, according to the gold of electrode voltage, electrode resistance, preset temperature and actual measurement
Belong to temperature computation and obtains complex optimum index.
As shown in figure 3, in step s 32, acquiring optimal voltage value and optimal resistance value according to complex optimum index.
Fig. 4 shows in the present embodiment step S31 according to electrode voltage, electrode resistance, preset temperature and actual measurement
Metal temperature calculation obtains the step flow chart of complex optimum index.
As shown in figure 4, thermal balance index is calculated according to electrode voltage, electrode resistance and heating power in step S41,
Calculation formula are as follows:
Formula (1):
As shown in figure 4, calculating heat according to preset temperature, the metal temperature of actual measurement and electrode resistance in step S42
Balance index, calculation formula are as follows:
Formula (2):
As shown in figure 4, calculating electrical fluctuation index, calculation formula according to electrode voltage and electrode resistance in step S43
Are as follows:
Formula (3):
Wherein Index1 is thermal balance index, and U is electrode voltage, and R is electrode resistance, and P is that material in electric furnace is added to melt
The heating power of required consumption, Index2 are heat distribution index, TcFor the metal temperature of actual measurement, TsFor preset temperature,
Index3 is electrical fluctuation index.
As shown in figure 4, calculating synthesis according to thermal balance index, heat distribution index and electrical fluctuation index in step S44
Optimizing index, calculation formula are as follows:
Formula (5): Index=min { K1*Index1+K2*Index2+K3*Index3 }, i.e.,
Wherein Index is complex optimum index, and K1, K2, K3 is weighting coefficient, specifically, K1 is thermal balance index
Weighting coefficient, K2 are the weighting coefficient of heat distribution index, and K3 is the weighting coefficient of electrical fluctuation index, and K1, K2, K3 ∈ (0,
1), the value of these three weighting coefficients can be adjusted according to Actual Control Effect of Strong.
In the present embodiment, optimal voltage value and optimal resistance value are acquired according to complex optimum index in step S32, specifically
To acquire synthesis according to the default value range of the default value range of complex optimum index combination electrode voltage, electrode resistance
Electrode voltage when optimizing index minimum is optimal voltage value, and resistive voltage when acquiring complex optimum index minimum is optimal electricity
Resistance value.
Wherein the value of electrode voltage U is determined by the load tapchanging gear of furnace transformer, usually 20 to 35 grades, voltage
Value range is 100V~1000V or 100V~2000V, needs to select different voltage gears according to metal smelting.Electrode resistance R
Value range (about 1m Ω~100m Ω) it is related to the property of smelting material, can pass through empirical data determine.
If electrode voltage range U are as follows: U ∈ { U1,U2,…Un, wherein U1,U2,…UnIt is each for furnace transformer on-load voltage regulation
The corresponding phase voltage of gear, if electrode impedance range are as follows: Rmin<R<Rmax.Respectively by U1,U2,…UnBring formula (5) into, and in Rmin<
R<RmaxWith the value of fixed step size step by step calculation Index in range, the corresponding U when Index minimumnIt is required optimal with R
Solution, i.e. optimal voltage value and optimal resistance value.It should be noted that fixed step size here can be maximum resistance value and minimum
The 1%~5% of the difference of resistance value.
In conclusion ore-smelting electric furnace control method provided in this embodiment, is obtained by carrying out COMPREHENSIVE CALCULATING to indices
To complex optimum index, and the optimal value of electrode voltage and electrode resistance is sought using complex optimum index, so as to according to electricity
The optimal value of pole tension and electrode resistance is controlled, and manual control is overcome not can guarantee the defect of performance.
A kind of electronic equipment, ore-smelting electric furnace control provided by the above embodiment are also provided in third embodiment of the present disclosure
Device can realize that the electronic equipment includes processor and memory by the electronic equipment, and memory storage is used for above-mentioned place
Manage operational order performed by device control computing module.Fig. 5 shows the step that the electronic equipment in the present embodiment executes operational order
Rapid flow chart.
As shown in figure 5, in step s 51, according to the value of the load tapchanging gear setting electrode voltage of furnace transformer
Range.
As shown in figure 5, in step S52, according to the value range of the furnace charge property setting electrode resistance heated.
As shown in figure 5, measuring metal temperature when electric furnace discharges metal in step S53.
As shown in figure 5, in step S54, heating power needed for being calculated in real time according to electric furnace charging amount.
As shown in figure 5, in step S55, by electrode voltage, electrode resistance, metal temperature, preset temperature and heating function
Rate is brought into formula (5) and complex optimum index is calculated.
As shown in figure 5, in step S56, electrode voltage and electrode resistance when acquiring complex optimum index minimum are most
The figure of merit, i.e. optimal voltage value and optimal resistance value.
As shown in figure 5, in step S57, according to the obtained optimal voltage value of step S56 and optimal resistance value to electrode into
Row control.
Based on above-mentioned, the electronic equipment of the present embodiment can be realized technology effect identical with above-mentioned ore-smelting electric furnace control device
Fruit, details are not described herein again.
Below with reference to Fig. 6, it illustrates the computer systems 600 for the electronic equipment for being suitable for being used to realize the embodiment of the present application
Structural schematic diagram.Electronic equipment shown in Fig. 6 is only an example, function to the embodiment of the present application and should not use model
Shroud carrys out any restrictions.
As shown in fig. 6, computer system 600 includes central processing unit (CPU) 601, it can be read-only according to being stored in
Program in memory (ROM) 602 or be loaded into the program in random access storage device (RAM) 603 from storage section 607 and
Execute various movements appropriate and processing.In RAM 603, also it is stored with system 600 and operates required various programs and data.
CPU 601, ROM 602 and RAM 603 are connected with each other by bus 604.Input/output (I/O) interface 605 is also connected to always
Line 604.
I/O interface 605 is connected to lower component: the importation 606 including keyboard, mouse etc.；It is penetrated including such as cathode
The output par, c 607 of spool (CRT), liquid crystal display (LCD) etc. and loudspeaker etc.；Storage section 608 including hard disk etc.；
And the communications portion 609 of the network interface card including LAN card, modem etc..Communications portion 609 via such as because
The network of spy's net executes communication process.Driver 610 is also connected to I/O interface 605 as needed.Detachable media 611, such as
Disk, CD, magneto-optic disk, semiconductor memory etc. are mounted on as needed on driver 610, in order to read from thereon
Computer program be mounted into storage section 608 as needed.
Particularly, in accordance with an embodiment of the present disclosure, it may be implemented as computer above with reference to the process of flow chart description
Software program.For example, embodiment of the disclosure includes a kind of computer program product comprising be carried on computer-readable medium
On computer program, which includes the program code for method shown in execution flow chart.In such reality
It applies in example, which can be downloaded and installed from network by communications portion 509, and/or from detachable media
511 are mounted.When the computer program is executed by central processing unit (CPU) 501, executes and limited in the system of the application
Above-mentioned function.
It should be noted that computer-readable medium shown in the application can be computer-readable signal media or meter
Calculation machine readable medium either the two any combination.Computer-readable medium for example may be-but not limited to-
Electricity, magnetic, optical, electromagnetic, infrared ray or semiconductor system, device or device, or any above combination.It is computer-readable
The more specific example of medium can include but is not limited to: have electrical connection, the portable computer magnetic of one or more conducting wires
Disk, hard disk, random access storage device (RAM), read-only memory (ROM), erasable programmable read only memory (EPROM or sudden strain of a muscle
Deposit), optical fiber, portable compact disc read-only memory (CD-ROM), light storage device, magnetic memory device or above-mentioned appoint
The suitable combination of meaning.In this application, computer-readable medium can be any tangible medium for including or store program, the journey
Sequence can be commanded execution system, device or device use or in connection.And in this application, it is computer-readable
Signal media may include in a base band or as carrier wave a part propagate data-signal, wherein carrying computer can
The program code of reading.The data-signal of this propagation can take various forms, including but not limited to electromagnetic signal, optical signal or
Above-mentioned any appropriate combination.Computer-readable signal media can also be any calculating other than computer-readable medium
Machine readable medium, the computer-readable medium can be sent, propagated or transmitted for by instruction execution system, device or device
Part uses or program in connection.The program code for including on computer-readable medium can use any Jie appropriate
Matter transmission, including but not limited to: wireless, electric wire, optical cable, RF etc. or above-mentioned any appropriate combination.
Flow chart and block diagram in attached drawing are illustrated according to the system of the various embodiments of the application, method and computer journey
The architecture, function and operation in the cards of sequence product.In this regard, each box in flowchart or block diagram can generation
A part of one module, program segment or code of table, a part of above-mentioned module, program segment or code include one or more
Executable instruction for implementing the specified logical function.It should also be noted that in some implementations as replacements, institute in box
The function of mark can also occur in a different order than that indicated in the drawings.For example, two boxes succeedingly indicated are practical
On can be basically executed in parallel, they can also be executed in the opposite order sometimes, and this depends on the function involved.Also it wants
It is noted that the combination of each box in block diagram or flow chart and the box in block diagram or flow chart, can use and execute rule
The dedicated hardware based systems of fixed functions or operations is realized, or can use the group of specialized hardware and computer instruction
It closes to realize.
Being described in unit involved in the embodiment of the present application can be realized by way of software, can also be by hard
The mode of part is realized.Described unit also can be set in the processor, for example, can be described as: a kind of processor packet
Include transmission unit, acquiring unit, determination unit and first processing units.Wherein, the title of these units is under certain conditions simultaneously
The restriction to the unit itself is not constituted, for example, transmission unit is also described as " sending picture to the server-side connected
The unit of acquisition request ".
On the other hand, the disclosure additionally provides a kind of computer-readable medium, which can be above-mentioned
Included in equipment described in embodiment；It is also possible to individualism, and without in the supplying equipment.Above-mentioned computer can
It reads medium and carries one or more program, when said one or multiple programs are executed by the equipment, so that this
Equipment comprises the following methods:
Complex optimum is obtained according to the metal temperature calculation of electrode voltage, electrode resistance, preset temperature and actual measurement
Index；Optimal voltage value and optimal resistance value are acquired according to complex optimum index.
It will be clearly understood that the present disclosure describes how to form and use particular example, but the principle of the disclosure is not limited to
These exemplary any details.On the contrary, the introduction based on disclosure disclosure, these principles can be applied to many other
Embodiment.
It is particularly shown and described the illustrative embodiments of the disclosure above.It should be appreciated that the disclosure is unlimited
In detailed construction described herein, set-up mode or implementation method；On the contrary, disclosure intention covers included in appended claims
Spirit and scope in various modifications and equivalence setting.
Claims (1)
1. a kind of ore-smelting electric furnace control method characterized by comprising
Thermal balance is respectively obtained according to the metal temperature calculation of electrode voltage, electrode resistance, preset temperature and actual measurement to refer to
Mark and electrically fluctuates index at heat distribution index；
Thermal balance index, calculation formula are wherein calculated according to the electrode voltage, the electrode resistance and heating power are as follows:
Wherein Index1 is thermal balance index, and U is electrode voltage, and R is electrode resistance, and P is to be added in electric furnace needed for material thawing
The heating power to be consumed；
Heat distribution index is calculated according to the preset temperature, the metal temperature of the actual measurement and the electrode resistance, is calculated
Formula are as follows:
Wherein Index2 is heat distribution index, TcFor the metal temperature of actual measurement, TsFor preset temperature；
Electrical fluctuation index, calculation formula are calculated according to the electrode voltage and the electrode resistance are as follows:
Wherein Index3 is electrical fluctuation index；
Complex optimum index is calculated according to the thermal balance index, the heat distribution index and the electrical fluctuation index,
Calculation formula are as follows:
Wherein Index is complex optimum index, and K1, K2, K3 is weighting coefficient, and K1, K2, K3 ∈ (0,1)；
Optimal voltage value and optimal resistance value are acquired according to the complex optimum index, comprising:
According to the complex optimum index in conjunction with the default value range of the electrode voltage, the default value of the electrode resistance
Electrode voltage in default value range is brought into complex optimum index calculation formula by range, and in default value range
Interior electrode resistance calculates the complex optimum index with fixed step size, and electrode voltage when acquiring complex optimum index minimum is
The optimal voltage value, electrode resistance when acquiring complex optimum index minimum are the optimal resistance value.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441035A (en) * | 2009-01-07 | 2009-05-27 | 中冶东方工程技术有限公司 | Automatic control method of ore furnace smelting electric institution |
| CN101968318A (en) * | 2010-09-13 | 2011-02-09 | 中国恩菲工程技术有限公司 | Method for automatically controlling power of electric furnace |
| CN102331193A (en) * | 2011-09-22 | 2012-01-25 | 云南文山斗南锰业股份有限公司 | System and method for controlling electrode of ore-smelting electric furnace |
-
2017
- 2017-10-20 CN CN201710985851.XA patent/CN107586954B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101441035A (en) * | 2009-01-07 | 2009-05-27 | 中冶东方工程技术有限公司 | Automatic control method of ore furnace smelting electric institution |
| CN101968318A (en) * | 2010-09-13 | 2011-02-09 | 中国恩菲工程技术有限公司 | Method for automatically controlling power of electric furnace |
| CN102331193A (en) * | 2011-09-22 | 2012-01-25 | 云南文山斗南锰业股份有限公司 | System and method for controlling electrode of ore-smelting electric furnace |
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