CN109735874A - A kind of optimization regulating method and control system of electrolytic aluminium load - Google Patents
A kind of optimization regulating method and control system of electrolytic aluminium load Download PDFInfo
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- CN109735874A CN109735874A CN201910218951.9A CN201910218951A CN109735874A CN 109735874 A CN109735874 A CN 109735874A CN 201910218951 A CN201910218951 A CN 201910218951A CN 109735874 A CN109735874 A CN 109735874A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 87
- 239000004411 aluminium Substances 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000005457 optimization Methods 0.000 title claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 13
- 230000009471 action Effects 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 11
- 238000005868 electrolysis reaction Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
This application involves power automation control technology field more particularly to a kind of optimization regulating methods and system of electrolytic aluminium load.The system comprises: low-frequency low-voltage load shedding device, encoded information transmitting device and SCR control device, low-frequency low-voltage load shedding device, encoded information transmitting device and SCR control device are sequentially connected with, the application passes through the information transmitting established between low-frequency low-voltage load shedding device and SCR control device and coordinated control matching relationship, realization carries out fining Control of decreasing load by off-load percentage definite value to electrolytic aluminium load, it avoids and cuts electrolytic aluminium load entirely, it can guarantee that electrolytic cell does not power off for a long time, maintain the security current requirement of equipment bottom line, simultaneously, it can be according to the needs of power grid low-frequency low-voltage load shedding, electrolytic aluminium load is accurately adjusted and reduced by each round off-load percentage definite value, fast quick-recovery mains frequency or voltage level.
Description
Technical field
This application involves power automation control technology field more particularly to a kind of optimization regulating methods of electrolytic aluminium load
And control system.
Background technique
Currently, the economic structure in China determine the load in electric system based on big industrial load, big industrial load
In again it is the most typical with the highly energy-consumings load such as electrolytic aluminium.For electric system, lead to power grid when catastrophe failure occurs for system side
When frequency or voltage seriously reduce, it is necessary to according to the severity that mains frequency or voltage reduce, quickly cut off certain amount
Big industrial load ensure power grid operation, to guarantee the normal power supply of other responsible consumers.
If electric system generation catastrophe failure causes mains frequency or voltage seriously to reduce in the prior art, for big work
Industry power load generally takes minute wheel time to cut off the off-load mode of its sub-load.
But the production of electrolytic aluminium load depends on electrolytic cell, the working mechanism of electrolytic cell is constant current mode, more
A groove body is powered using series system, and load is huge and is difficult to divide excision, disposably cuts electrolytic aluminium load entirely if taking, past
It is too fast toward the case where will cause cutting load, causing mains frequency or voltage to rise, it may cause mains frequency or voltage substantially
Fluctuation.When Electrolytic Aluminium Rectifier Transformers system continue working electric current be lower than rated value 90% after, electrolytic cell cannot be normal
Production.The low current duration is longer, and loss is bigger, can not only have an impact to production raw material under serious conditions, cause original
Material scrap, and production equipment and process element can be damaged.For this purpose, providing a kind of minute wheel time fining off-load scheme
Instead of cutting electrolytic aluminium load entirely, for guaranteeing that the operational safety of safe and stable operation of power system and electrolytic aluminium equipment all has
Significance.
Summary of the invention
This application provides the optimization regulating methods and control system of a kind of electrolytic aluminium load, to solve electric system
When serious low frequency or low-voltage accident can not minute wheel time precisely excision electrolytic aluminium load the problem of, on the one hand avoid and disposably cut entirely
Electrolytic aluminium load causes electrolysis raw material all to scrap the problems such as even important equipments such as electrolytic cell are badly damaged, on the other hand
It can avoid a large amount of incisal guides of crossing of load and cause mains frequency or voltage fluctuation, influence power grid operation.
The first aspect of the application provides a kind of optimization regulating method of electrolytic aluminium load, which comprises
S1, acquisition system voltage, closed action node；
S2, the closure signal of the movement node is sent to out ingress；
S3, the signal for opening ingress is restored, the electrolytic aluminium load percentage for needing to adjust and reduce is obtained, according to institute
State the rectified voltage that percentage adjusts electrolytic aluminium load.
Optionally, method described in step S1 further include: fault distinguishing is carried out to the busbar voltage of system, if the system
System meets low frequency or low pressure operation condition, then closed action node；If it is not, not doing any movement then.
Optionally, method described in step S1 further include:
Coding mode is set according to low frequency or the corresponding off-load percentage definite value of low-voltage load sheding movement round；
Carry out closed action node with the coding mode of setting.
Optionally, method described in step S1 further include: by corresponding off-load definite value according to 8421 coding mode pair
Node, TJ2 movement node, TJ3 movement node and TJ4 should be acted to TJ1 acts node.
Optionally, method described in step S3 further include: the signal of ingress is opened described in receiving according to correspondence
Decoding process restored.
Optionally, method described in step S3 further include: by the big minor adjustment electricity for adjusting rectification adverser Trigger Angle
Solve the rectified voltage of aluminium load.
The second aspect of the application provides a kind of Optimal Control System of electrolytic aluminium load, appoints for claim 1-6
Method described in one, the system comprises: low-frequency low-voltage load shedding device, encoded information transmitting device and SCR control dress
It sets, the low-frequency low-voltage load shedding device, the encoded information transmitting device and the SCR control device are sequentially connected with,
The low-frequency low-voltage load shedding device is used for acquisition system voltage, closed action node；
The encoded information transmitting device is used to the closure signal of the movement node being sent to out ingress；
The SCR control device obtains the electrolysis for needing to adjust and reduce for restoring the signal for opening ingress
Aluminium load percentage adjusts the rectified voltage of electrolytic aluminium load according to the percentage.
Optionally, basic wheel and special wheel, the basic wheel and the spy are provided in the low-frequency low-voltage load shedding device
Each the corresponding off-load definite value of movement round very taken turns is to lower the percentage of electrolytic aluminium load.
Optionally, the low-frequency low-voltage load shedding device is provided with 6 wheels and takes turns substantially and the 1 special wheel of wheel.
Optionally, the encoded information transmitting device by cable loop establish the low-frequency low-voltage load shedding device with it is described
Connection relationship between SCR control device.
The technical scheme provided by the application includes following advantageous effects:
This application provides the optimization regulating method and control system of a kind of electrolytic aluminium load, the control system includes:
Low-frequency low-voltage load shedding device, encoded information transmitting device and SCR control device, low-frequency low-voltage load shedding device, encoded information pass
Defeated device and SCR control device are sequentially connected with.Low-frequency low-voltage load shedding device is used for acquisition system voltage, carries out low-frequency and low-voltage
Accident judgement, according to the corresponding off-load amount demand of accident, closed action node；Encoded information transmitting device will be for that will act node
Closure signal be sent to out ingress；SCR control device is restored for that will open ingress signal, obtains needing to adjust
The electrolytic aluminium load percentage subtracted adjusts the rectified voltage of electrolytic aluminium load according to percentage.The application is low by establishing low frequency
Information transmitting and the coordinated control matching relationship between load-shedding equipment and SCR control device are pressed, electrolytic aluminium load is pressed in realization
Off-load percentage definite value carries out fining Control of decreasing load, avoids and cuts electrolytic aluminium load entirely, can guarantee electrolytic cell for a long time not
Power-off maintains the security current requirement of equipment bottom line, meanwhile, it is capable to according to the needs of power grid low-frequency low-voltage load shedding, by every
One round off-load percentage definite value accurately adjusts and reduce electrolytic aluminium load, fast quick-recovery mains frequency or voltage level, for guaranteeing electricity
Net safe and stable operation is of great significance.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow chart that a kind of electrolytic aluminium load optimal provided by the embodiments of the present application regulates and controls method.
Fig. 2 is a kind of structural schematic diagram of electrolytic aluminium load optimizing control system provided by the embodiments of the present application.
Description of symbols:
1, low-frequency low-voltage load shedding device；2, encoded information transmitting device；3, SCR control device.
Specific embodiment
In the prior art, when catastrophe failure occurs for system side, and mains frequency or voltage is caused seriously to reduce, if taking one
The case where secondary property cuts electrolytic aluminium load entirely, often will cause cutting load causes mains frequency or voltage to rise too fast, Ke Nengyin
Mains frequency or voltage fluctuation are played, while also will cause electrolysis material and scrapping the even important equipments such as electrolytic cell damage.For
This, present applicant proposes the optimization regulating method and system of a kind of electrolytic aluminium load, by establish low-frequency low-voltage load shedding device with
Information transmitting and matching relationship, realization between thyristor control system carry out fining off-load to electrolytic aluminium load precentagewise
Control causes not the safe operation of the important equipments such as electrolytic cell and power network safety operation to avoid cutting electrolytic aluminium load entirely
Benefit influences.
The first aspect of the application provides a kind of optimization regulating method of electrolytic aluminium load, which comprises
S1, acquisition system voltage, closed action node.
First by collected voltage, judge whether system is in low-pressure state, it is described if system meets lower pressure
Control system is according to the coding mode closed action according to the corresponding off-load percentage definite value of low-voltage load sheding movement round to set
Node；If system is unsatisfactory for lower pressure, system frequency is calculated according to collected voltage value, if system meets low frequency item
Part, the control system are closed according to the corresponding off-load percentage definite value of low-voltage load sheding movement round with the coding mode set dynamic
Make node, if system had not only been unsatisfactory for lower pressure but also be unsatisfactory for low frequency condition, control system is without any movement.Until being
System is detected in low pressure or low frequency state, just according to corresponding round closed action node.
S2, the closure signal for acting node is sent to out ingress.
Judge whether power grid is in low-frequency and low-voltage state by collected voltage, when control system be in low frequency or
When low-pressure state, it is necessary to which control system is come quickly to adjust and reduce the rectified voltage for adjusting electrolytic aluminium load according to round.When system is pressed
After the coding mode closed action node of setting, the adjusting of voltage percentage will be carried out in next link, so just needing
By instruction issuing to corresponding interface, the tune of electrolytic aluminium load is completed convenient for the corresponding interface cooperation low-frequency low-voltage load shedding device
It controls, by cable loop come the closure signal of transfer operation node after instruction issuing.
S3, it ingress signal will be opened will restore, and the electrolytic aluminium load percentage for needing to adjust and reduce be obtained, according to the percentage
Than the rectified voltage for adjusting electrolytic aluminium load.
The closure signal for acting node is sent to out ingress by cable loop, what ingress was opened in arrival is setting
Coding mode, so to carry out next round movement, first have to the coding mode that will be set according to corresponding decoding process into
Row reduction, the content of reduction is exactly the electrolytic aluminium load percentage for needing to adjust and reduce about some node, then just according to decoded
Load adjusts and reduce the rectified voltage that percentage demand quickly adjusts and reduce electrolytic aluminium load, and such adjusting can be disposable completion,
It is also possible to the completion of more rounds.
Optionally, method described in step S1 further include: fault distinguishing is carried out to system busbar voltage, if the system
Meet low frequency or low pressure operation condition, then closed action node；If it is not, not doing any movement then.Here the voltage acquired is to be
It unites the voltage of bus, because bus is the electrical equipments such as the connection of voltage power distribution equipment at different levels and transformer in electric substation
With the connection of corresponding power distribution equipment, effect is to collect, distribute and transmit electric energy.After busbar voltage acquisition, so that it may directly sentence
Whether power-off net is in low-pressure state, if being not at low-pressure state, then by calculating, sees that be that power grid is no meet low frequency state.
Optionally, method described in step S1 further include: set according to the corresponding off-load percentage definite value of movement round
Determine coding mode；Carry out closed action node with the coding mode of setting.
Optionally, method described in step S1 further include: by corresponding off-load definite value according to 8421 coding mode pair
Node, TJ2 movement node, TJ3 movement node and TJ4 should be acted to TJ1 acts node.When electric system because power generation and electricity consumption are negative
When occurring vacancy between lotus demand and frequency is caused to decline, according to the operating frequency value of adjusting, it will successively be presetted in system
A part of secondary load excision also, makes system active power tend to balance again, frequency is gone up.It is cut to minimize
Restore frequency except load and as early as possible, the speed and absolute value declined according to the size of the active power shortage of system and frequency,
The load to be cut off is divided into several wheels, sequentially cuts off during frequency decline.First round determination should take into account the stability of system
With the reliability of power supply, last wheel determination is determined by the low-limit frequency that system allows.The application uses 8421 coding mode
Come determine sequentially cut off electrolytic aluminium load where interface because this coding mode can cover all interface code sequences
Number, and in the low-frequency low-voltage load shedding device of the application, it is only necessary to four movement nodes are set, so that it may corresponding all adjustings
Voltage interface.
Optionally, method described in step S3 further include: open ingress signal according to corresponding decoding for what is received
Mode is restored.Because what ingress was opened in arrival is the coding mode of setting, next round movement is carried out, first
The coding mode of setting is restored according to corresponding decoding process, the content of reduction is exactly to need to adjust about some node
The electrolytic aluminium load percentage subtracted, then adjusts and reduce the rectification that percentage demand quickly adjusts electrolytic aluminium load according to decoded load
Voltage, such adjusting can be disposable completion, be also possible to the completion of more rounds.
Optionally, method described in step S3 further include: adjusted by adjusting the size of rectification adverser Trigger Angle
The rectified voltage of electrolytic aluminium load.Divide when rectification by loadtype: when ohmic load, 0~150 ° of Trigger Angle, big inductive load
When, 0~90 ° of rectifier and trigger angle；It is 90~180 ° that angular region is triggered when inversion.Ingress signal is opened according to correspondence by what is received
Decoding process restored, obtain needing the electrolytic aluminium load percentage adjusted and reduced, and adjust commutation inversion according to the percentage
The size of device Trigger Angle.
Illustratively, as shown in Fig. 2, the second aspect for the application provides a kind of optimal control system of electrolytic aluminium load
System, the system comprises: low-frequency low-voltage load shedding device, encoded information transmitting device and SCR control device, the low frequency are low
Pressure load-shedding equipment, the encoded information transmitting device and the SCR control device are sequentially connected with, the low-frequency low-voltage load shedding
Device is used for acquisition system voltage, closed action node；The encoded information transmitting device is used to act the closure letter of node
Number it is sent to out ingress；The SCR control device is restored for that will open ingress signal, obtains what needs were adjusted and reduced
Electrolytic aluminium load percentage adjusts the rectified voltage of electrolytic aluminium load according to the percentage.
In order to improve power supply quality, guarantees the reliability of responsible consumer power supply, cause when having power shortage in system
When frequency declines, according to the degree that frequency declines, a part of unessential user is cut off automatically, prevents frequency from declining, so that electric
Net frequency is promptly restored to normal value, this just needs to use low-frequency low-voltage load shedding device.Low-frequency low-voltage load shedding device is by cutting load
Capacity command is converted into adjusting and reducing the percentage command of electrolytic aluminium load power, and percentage command is converted into 8421 codings and is corresponded to
Node is acted to TJ1, TJ2, TJ3, TJ4 fourth officer；SCR control device receives the movement of low-frequency low-voltage load shedding device transmission
After node signal, restore to obtain the percentage command for needing to adjust and reduce electrolytic aluminium load according to 8421 yards of combination.
The movement node closure signal is sent to silicon-controlled control by transmitting circuit using encoded information transmitting device
Device processed opens ingress, KR1, KR2, KR3 and KR4 as shown in Figure 2, and the encoded information transmitting device passes through cable and returns
The connection relationship between low-frequency low-voltage load shedding device and thyristor control system is established on road, and the cable loop will act node
Closure signal is sent to the ingress of opening of SCR control device, and the encoded information transmitting device can also be transmitted by other
Medium establishes the connection relationship between low-frequency low-voltage load shedding device and thyristor control system, does not transmit to specific in the present invention
Medium is limited.
Ingress signal is opened by the corresponding decoding process of the coding mode by what is received using SCR control device
It is restored, for example can be and restored by 8421 yards of combinations, obtain the electrolytic aluminium load percentage for needing to adjust and reduce, and according to
The rectified voltage of percentage adjusting electrolytic aluminium load；The electrolytic aluminium load is rectification adverser, the SCR control dress
It sets the ingress signal of opening that will be received to restore by the corresponding decoding process of the coding mode, obtains the electricity for needing to adjust and reduce
Aluminium load percentage is solved, and adjusts the size of rectification adverser Trigger Angle according to the percentage.
Optionally, basic wheel and special wheel, the basic wheel and the spy are provided in the low-frequency low-voltage load shedding device
Each the corresponding off-load definite value of movement round very taken turns is to lower the percentage of electrolytic aluminium load.Basic wheel in system for sending out
Use when raw emergency causes frequency rapid decrease, one take turns according to the powered down load for solving aluminium of the fast ram compression of percentage,
Until power system recovery is stablized.Special wheel for the frequency after system breaks down or voltage long-term suspension in one compared with
It is used when low value.
Optionally, the low-frequency low-voltage load shedding device is provided with 6 wheels and takes turns substantially and the 1 special wheel of wheel.The application is provided with 6 wheels
Substantially wheel and the 1 special wheel of wheel, in the event of a failure, the regulation of special wheel is taken turns in the regulation or 1 taken turns substantially by 6 wheels for electric system
Afterwards, system frequency would not generally decline again, and electric system tends to stablize.
Optionally, the encoded information transmitting device by cable loop establish the low-frequency low-voltage load shedding device with it is described
Connection relationship between SCR control device.
Embodiment 1
The embodiment of the present application 1 is illustrated by taking typical electrolytic aluminium load as an example.Electrolytic Aluminum Series are whole by 8 160MVA's
Stream inverter is powered side by side, and maximum power load is 720MW.Wherein, station-service power load about 24MW, institute are mostly level-one for load
Protective load is not involved in low-frequency low-voltage load shedding and adjusts control；Electrolytic aluminium load about 696MW, can participate in low-frequency low-voltage load shedding tune
Section control.Electrolytic cell is constant current working mechanism, does not allow Electrolytic Aluminum Series to continue working electric current too low, otherwise can be former to production
The important equipments such as material and electrolytic cell cause to seriously affect.
Configure low-frequency low-voltage load shedding device, encoded information transmitting device and SCR control device, the low-frequency and low-voltage
Movement node TJ1, TJ2, TJ3, TJ4 coded information transmitting device of load-shedding equipment by external cable be sent to opposite side open into
Node KR1, KR2, KR3, KR4 will open ingress information by SCR control device and be reduced into and adjust and reduce load percentage.
If according to traditional control method, the cutting load feeder switch after movement of 1 wheel of low frequency, full factory's load power loss；And such as
Fruit is using the Optimum Regulation system in the application, then low frequency 1 takes turns off-load definite value and is set as 7%, and corresponding to 8421 yards are 0111, low
Frequently it is closed TJ1, TJ2, TJ3 after 1 wheel movement, the closure signal for acting node is sent to SCR control dress by external cable
It sets, SCR control device obtains the electrolytic aluminium load for needing to adjust and reduce by corresponding decoding process also origin node closure signal
Percentage, and rectification adverser Trigger Angle size is adjusted according to the percentage, achieve the purpose that quickly to adjust and reduce electrolytic aluminium load.This
The Optimum Regulation of application shows with traditional control method Contrast on effect such as table 1.
1 traditional control method of table and optimization regulating method Contrast on effect table
By table 1, it can be seen that, the application realizes the Optimum Regulation to electrolytic aluminium load, by establishing low-frequency low-voltage load shedding
Information transmitting and coordinated control matching relationship between device and SCR control device, realize to electrolytic aluminium load by percentage
Than carrying out fining Control of decreasing load.It, can be before guaranteeing electrolytic cell safety in production this method avoid electrolytic aluminium load is cut entirely
It puts, according to the needs of power grid low-frequency low-voltage load shedding, realizes that quickly adjusting and reducing electrolytic aluminium bears by off-load amount definite value in each round
Lotus is of great significance to power network safety operation.
When should be pointed out that the cutting load object when electrolytic aluminium load as electricity net safety stable controlling system, the present invention is mentioned
Optimization regulating method out is equally of great significance.The main website cutting load capacity that safety and stability control device of electric network will receive
Order is converted into adjusting and reducing the percentage command of electrolytic aluminium load power, and this percentage command is converted into 8421 codings and is corresponded to
TJ1, TJ2, TJ3, TJ4 fourth officer to stability control equipment acts node, is then sent to electrolytic aluminium SCR control dress by cable
It sets.After SCR control device receives the movement node signal of stability control equipment transmission, restored according to 8421 yards of combinations
It obtains needing to adjust and reduce the percentage of electrolytic aluminium load, and completes to adjust and reduce control to electrolytic aluminium load within the 100ms time.
This application provides the optimization regulating method and its control system of a kind of electrolytic aluminium load, the control system packet
It includes: low-frequency low-voltage load shedding device, encoded information transmitting device and SCR control device.Low-frequency low-voltage load shedding device, coding letter
Breath transmitting device and SCR control device are sequentially connected with, and low-frequency low-voltage load shedding device is used for acquisition system voltage, carry out low frequency
Low-voltage accident judgement, and according to the corresponding off-load amount demand closed action node of accident；Encoded information transmitting device will be for that will move
The closure signal for making node is sent to out ingress；SCR control device is restored for that will open ingress signal, is obtained
The electrolytic aluminium load percentage for needing to adjust and reduce, the rectified voltage of electrolytic aluminium load is quickly adjusted according to percentage, to realize that it is negative
Lotus is quickly adjusted and reduced.The application is transmitted by the information established between low-frequency low-voltage load shedding device and SCR control device and association
Regulate and control matching relationship processed, realization carries out fining Control of decreasing load by off-load percentage definite value to electrolytic aluminium load, avoids and cut entirely
Electrolytic aluminium load can guarantee that electrolytic cell does not power off for a long time, maintain the security current requirement of equipment bottom line, meanwhile, energy
Enough needs according to power grid low-frequency low-voltage load shedding, accurately adjust and reduce electrolytic aluminium load by each round off-load percentage definite value, quickly
Restore mains frequency or voltage level, to guaranteeing that power network safety operation is of great significance.
It should be noted that such as the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include so that including the article of a series of elements or equipment not only includes those elements, but also including not bright
The other element really listed, or further include for elements inherent to such a process, method, article, or device.Do not having
In the case where more limitations, the element that is limited by sentence "including a ...", it is not excluded that include the element process,
There is also other identical elements in method, article or equipment.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
It should be understood that the application is not limited to the content for being described above and being shown in the accompanying drawings, and can
To carry out various modifications and change without departing from the scope.Scope of the present application is only limited by the accompanying claims.
Claims (10)
1. a kind of optimization regulating method of electrolytic aluminium load, which is characterized in that the described method includes:
S1, acquisition system voltage, closed action node；
S2, the closure signal of the movement node is sent to out ingress；
S3, the signal for opening ingress is restored, the electrolytic aluminium load percentage for needing to adjust and reduce is obtained, according to described hundred
Divide the rectified voltage than adjusting electrolytic aluminium load.
2. the method according to claim 1, wherein method described in step S1 further include: to the mother of system
Line voltage carries out fault distinguishing, if the system meets low frequency or low pressure operation condition, closed action node；If it is not, then not
Do any movement.
3. according to the method described in claim 2, it is characterized in that, method described in step S1 further include:
Coding mode is set according to low frequency or the corresponding off-load percentage definite value of low-voltage load sheding movement round；
With the coding mode closed action node of setting.
4. according to the method described in claim 3, it is characterized in that, method described in step S1 further include: subtract corresponding
It is corresponding to TJ1 movement node, TJ2 movement node, TJ3 movement node and TJ4 movement section according to 8421 coding mode to carry definite value
Point.
5. the method according to claim 1, wherein method described in step S3 further include: by what is received
The signal for opening ingress is restored according to corresponding decoding process.
6. according to the method described in claim 5, it is characterized in that, method described in step S3 further include: whole by adjusting
The rectified voltage of the big minor adjustment electrolytic aluminium load of inverter Trigger Angle is flowed, and then adjusts the size of electrolytic aluminium load.
7. a kind of Optimal Control System of electrolytic aluminium load, is used for method described in any one of claims 1-6, feature exists
In, the system comprises: low-frequency low-voltage load shedding device (1), encoded information transmitting device (2) and SCR control device (3), institute
Low-frequency low-voltage load shedding device (1), the encoded information transmitting device (2) and the SCR control device (3) is stated to be sequentially connected with,
The low-frequency low-voltage load shedding device (1) is used for acquisition system voltage, closed action node；
The encoded information transmitting device (2) is used to the closure signal of the movement node being sent to out ingress；
The SCR control device (3) obtains the electrolysis for needing to adjust and reduce for restoring the signal for opening ingress
Aluminium load percentage adjusts the rectified voltage of electrolytic aluminium load according to the percentage.
8. control system according to claim 7, which is characterized in that be provided in the low-frequency low-voltage load shedding device (1)
Basic wheel and special wheel, basic wheel off-load definite value corresponding with each movement round of the special wheel is to lower electrolysis
The percentage of aluminium load.
9. control system according to claim 8, which is characterized in that the low-frequency low-voltage load shedding device (1) is provided with 6 wheels
Basic wheel and the 1 special wheel of wheel.
10. control system according to claim 7, which is characterized in that the encoded information transmitting device (2) passes through cable
The connection relationship between the low-frequency low-voltage load shedding device (1) and the SCR control device (3) is established in circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218951.9A CN109735874B (en) | 2019-03-21 | 2019-03-21 | Optimized regulation and control method and control system for electrolytic aluminum load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910218951.9A CN109735874B (en) | 2019-03-21 | 2019-03-21 | Optimized regulation and control method and control system for electrolytic aluminum load |
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| CN111286759A (en) * | 2020-03-27 | 2020-06-16 | 国网山东省电力公司电力科学研究院 | Control method and system for participation of electrolytic aluminum load in emergency control of power grid |
| CN111341389A (en) * | 2020-03-27 | 2020-06-26 | 国网山东省电力公司电力科学研究院 | Electrolytic aluminum load electric heating characteristic modeling method for direct load control |
| CN112350319A (en) * | 2020-11-23 | 2021-02-09 | 云南电网有限责任公司 | Electrolytic aluminum grid-involvement emergency power reduction system and control method |
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