CN108021023A - Megawatt wind turbine blade mould electric-heating control system and control method - Google Patents
Megawatt wind turbine blade mould electric-heating control system and control method Download PDFInfo
- Publication number
- CN108021023A CN108021023A CN201610940435.3A CN201610940435A CN108021023A CN 108021023 A CN108021023 A CN 108021023A CN 201610940435 A CN201610940435 A CN 201610940435A CN 108021023 A CN108021023 A CN 108021023A
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- heating
- temperature
- control
- passage
- wind turbine
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0205—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system
- G05B13/024—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system in which a parameter or coefficient is automatically adjusted to optimise the performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
Abstract
The invention discloses a kind of megawatt wind turbine blade mould electric-heating control system and control method, the megawatt wind turbine blade mould is divided into several heating passages, the electric-heating control system includes control device and includes sensing module and voltage regulating module with one-to-one several electrical heating detection regulating device of several heating passages, the electrical heating detection regulating device；The sensing module is arranged in the heating passage, it is used for the electric current and temperature that gather the heating passage in real time；The control device is used to generate control signal based on the electric current and temperature；The voltage regulating module is used for the output voltage that resistive heater is produced according to the control signal.The control system solves the problems, such as that mold heating system high failure rate, operation maintenance cost are high in the prior art, control accuracy is low, improves control accuracy, reduces equipment operation failure rate, improves product quality, reduces operation cost.
Description
Technical field
The invention belongs to technical field of wind power, more particularly to a kind of megawatt wind turbine blade mould electric-heating control system and
Control method.
Background technology
At present, the actual use situation according to present wind-powered electricity generation industry blade mold, heats wind-powered blade mold
System mainly has two ways, one is realize the heating of mould indirectly using heat-conducting medium, the heat-conducting medium be generally water or
Other non-combustible liquid of person.The second is directly heating, in mould inside embedding resistance silk, resistance wire electricity is controlled by controller
Pressure realizes computer heating control.
Realize that the heating system of mould is generally used as heating equipment using die heater indirectly by the use of heat-conducting medium, its control with
The temperature of fluid circulating is referred to as control, since the area of circulation canal is big, distance, causes the system to have following lack
Point：1st, heat-transfer fluid heating system needs secondary-conduction, and transfer pipeline is longer, be easy to cause thermal loss；2nd, fluid heating speed
Spend slowly, be easy to cause and heat slow, cooling difficulty, extend manufacture cycle；3rd, circulating pressure is higher in heat-transfer fluid heating system,
Pipeline is long, connector quantity is more, easily produces leakage, at the same the use of fluid also mould inside pipeline is laid with propose it is higher
Technological requirement；4th, circulating temperature refers in order to control within the control of heat-transfer fluid heating system temperature, and the temperature is real with die surface
Border temperature difference is larger, it is not easy to realize accurate temperature control, and the difference of mold surface temperature and the circulation of fluid temperature with
Environment temperature residing for mould is related, is easy to cause temperature deviation；5th, such mould has higher requirements the environment used, in north
Side should carry out special protection when low temp area transport, use.
Electric heating system generally controls heating voltage by temperature sensor, using microcontroller as controller, in reality
Had a disadvantage that during operation：1st, existing electric heating system uses voltage control method, directly controls voltage according to temperature adjustment, because
Each track resistance values cause not of uniform size, this control mode are easy to cause that the excessive temperature of channel current is excessive to burn out resistance wire and mould
Tool；2nd, microcontroller is influenced often to occur controlling not normal in actual motion by electrostatic or other factors, causes to heat passage temperature
Spend uncontrolled, burn out blade or mould, operation stability is poor；3rd, due to being heated caused by the structure of mould when heating
When position is different, the area of heating is different, so that resistance wire resistance value size, heat loss rate are different, therefore use and is somebody's turn to do
The die face heating uniformity of heating system is poor, has considerable influence to leaf quality, die life.
To sum up, there is an urgent need for existing wind-powered blade mold heating system is improved to solve the above problems.
The content of the invention
The first technical problem to be solved by the present invention is to need to provide a kind of improved wind-powered blade mold heating system
It is poor to solve existing control system operation stability, the problem of heating uniformity is poor.
In order to solve the above-mentioned technical problem, embodiments herein provide firstly a kind of megawatt wind turbine blade mould electricity
Heating control system, the megawatt wind turbine blade mould are divided into several heating passages, the electric-heating control system
Regulating device, the electricity are detected including control device and with several described several one-to-one electrical heating of heating passages
Heating detection regulating device includes sensing module and voltage regulating module；The sensing module is arranged in the heating passage, it is used
In the electric current and temperature that gather the heating passage in real time；The control device is used to generate control based on the electric current and temperature
Signal processed；The voltage regulating module is used for the output voltage that resistive heater is produced according to the control signal.
Preferably, the sensing module includes：Resistance and temperature collecting unit, it is used for the temperature for obtaining the heating passage
Degree；And current acquisition analog quantity unit, it is used for the electric current for obtaining the heating passage.
Preferably, the control device includes：Heated current computing module, it is according to each temperature for heating passage collected
Degree and default heating-up temperature and heating time determine the firing rate of each heating passage respectively, and according to the firing rate
Determine each heating default heated current of passage；Fuzzy comparisons module, it is each with collecting to the default heated current
The difference for heating the electric current of passage carries out Fuzzy comparisons；Fuzzy Calculation module, its result to the Fuzzy comparisons obscure
Calculate and produce control signal.
Preferably, the electrical heating detection regulating device further includes：Heated protective module, it is logical that it monitors the heating in real time
Voltage, electric current and the temperature in road, to realize the protection to the heating passage.
Preferably, the control device is communicated to connect by Industrial Ethernet and industrial personal computer, and the industrial personal computer passes through ether
Net is communicated to connect with remote control terminal.
Embodiments herein additionally provides a kind of megawatt wind turbine blade mould electric heating controlling method, will be described megawatt
Level wind-powered blade mold is divided into several heating passages；The electric current and temperature of the heating passage are gathered in real time；Based on described
Electric current generates control signal with temperature；The output voltage of resistive heater is produced according to the control signal.
Preferably, control signal is generated based on the electric current and temperature using FUZZY ALGORITHMS FOR CONTROL.
Preferably, the FUZZY ALGORITHMS FOR CONTROL includes：According to the temperature of each heating passage collected and it is default plus
Hot temperature and heating time determine the firing rate of each heating passage respectively, and determine each heating passage according to the firing rate
Default heated current；Fuzzy ratio is carried out to the difference of the electric current of the default heated current and each heating passage collected
Compared with；Fuzzy Calculation generation control signal is carried out to the result of the Fuzzy comparisons.
Preferably, the megawatt wind turbine blade mould is divided into several heating passages, including：Will according to technique
Ask and function division is carried out to wind-powered blade mold；The requirement of result and heated current and heating process based on function division is by institute
State megawatt wind turbine blade mould and be divided into several heating passages.
Compared with prior art, one or more of such scheme embodiment can have the following advantages that or beneficial to effect
Fruit：
Temperature is taken by carrying out the division of heating passage to megawatt wind turbine blade mould, and for each heating passage
The double feedback controls of degree, electric current, solve mold heating system high failure rate, operation maintenance cost height, control essence in the prior art
The problem of low is spent, improves control accuracy, equipment operation failure rate is reduced, improves product quality, reduces operation cost.At the same time
The automatic operating of factory is realized by information-based automatic improving, realize the On-line matching of production technology, creation data
Line monitors, and reduces manual intervention, shortens the production time, improving production efficiency.
Other advantages, the target of the present invention, and feature will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can be wanted by following specification, right
Specifically noted structure is sought in book, and attached drawing to realize and obtain.
Brief description of the drawings
Attached drawing is used for providing to the technical solution of the application or further understanding for the prior art, and constitution instruction
A part.Wherein, the attached drawing for expressing the embodiment of the present application is used for the technical side for explaining the application together with embodiments herein
Case, but do not form the limitation to technical scheme.
Fig. 1 is the structural representation according to the megawatt wind turbine blade mould electric-heating control system of one embodiment of the invention
Figure；
Fig. 2 is to be illustrated according to the flow of the megawatt wind turbine blade mould electric heating controlling method of another embodiment of the present invention
Figure；
Fig. 3 a- Fig. 3 b are the setting schematic diagram according to the wind-powered blade mold single-side heating passage of the embodiment of the present invention；
Fig. 4 is the flow diagram that control signal is generated using FUZZY ALGORITHMS FOR CONTROL according to the embodiment of the present invention；
Fig. 5 is the control principle schematic diagram according to the FUZZY ALGORITHMS FOR CONTROL of the embodiment of the present invention；
Fig. 6 is the data exchange framework according to the megawatt wind turbine blade mould electric-heating control system of the embodiment of the present invention
Schematic diagram.
Embodiment
Carry out the embodiment that the present invention will be described in detail below with reference to accompanying drawings and embodiments, how the present invention is applied whereby
Technological means solves technical problem, and that reaches relevant art effect realizes that process can fully understand and implement according to this.This Shen
Each feature that please be in embodiment and embodiment, can be combined with each other under the premise of not colliding, the technical solution formed
Within protection scope of the present invention.
Fig. 1 is the structural representation according to the megawatt wind turbine blade mould electric-heating control system of one embodiment of the invention
Figure, Fig. 2 are the flow diagram according to the megawatt wind turbine blade mould electric heating controlling method of another embodiment of the present invention, under
Face illustrates the embodiment of the present invention with reference to Fig. 1 and Fig. 2.
As shown in Figure 1, the electric-heating control system includes control device 11 and heats passages one by one with several
Several corresponding electrical heating detect regulating device 12, wherein, electrical heating detection regulating device 12 further comprises sensing module
121 and voltage regulating module 122.
As shown in Fig. 2, the electric heating controlling method comprises the following steps：
Step S210, megawatt wind turbine blade mould is divided into several heating passages.
Step S220, the electric current and temperature of the passage of collection heating in real time.
Step S230, control signal is generated with temperature based on the electric current collected.
Step S240, the output voltage of resistive heater is produced according to the control signal of generation.
It is big for wind-powered blade mold area and make it that heating-up temperature can not be precisely controlled, the problem of firing rate is slow,
In the embodiment of the present invention, wind-powered blade mold is divided into by multiple heating passages according to heating surface (area) (HS or function.
Specifically, carrying out function division to wind-powered blade mold according to technological requirement first, function division is then based on
As a result wind-powered blade mold is divided into several heating passages, heating passage division by the requirement with heated current and heating process
Must be more thin better, but generally, in view of actual manufacture, maintenance cost, mould heats the division Main Basiss two of passage
A principle, first is the limitation of heater strip resistance (heated current determined according to heater strip material), and second is heating process
It is required that.
Such as when heating power supply selects 220VAC (can also select 380V), to limit and realizing the heating of setting speed
Degree, mould heated current is no more than 7A and have to be larger than 5A, therefore the size of single aisle resistance silk resistance is no more than 30
Ohm, otherwise heating effect or security can be affected.
The division of heating passage also needs to consider technological requirement at the same time, and different zones have different heating requirements, it is necessary to root
Function division is carried out to mould according to technological requirement and then just can determine that heating passage.
For example, as shown in Figure 3a and Figure 3b shows, total heating surface (area) (HS of wind-powered blade mold is about 300 square metres, if
Taking each area for heating passage to be about 2.5 square metres, (area first of passage is according to technological requirement and security, secondary need
Consider the characteristic of resistance wire), the number of each face heating passage of mould is about 60, and whole set of die is 120.In actual division
When heating passage, (for example the serious position that generates heat, emphasis control is needed mainly in accordance with above-mentioned two principle, while for key area
Position processed) independent division is done, the area of heater strip resistance value and heating passage is no longer determinant at this time.Especially mould is interior
Outward flange and the serious position of front and rear edge fever, will be divided into specific passage aisle and design multiple thermal modules to realize to mould
Temperature is precisely controlled.In addition, the possibility of interchangeability blade tip mould is also presented in the heating passage division of Fig. 3 a and Fig. 3 b.
Resistive heater is placed in heating passage and sensing module 121 is set.Wherein, the length of resistive heater and
Resistance value is determined according to the area of heating unit.Such as in precedent, when the area of each heating unit is about 2.5 square metres, electricity
Hinder about 100 meters of filament length degree.Resistance wire can be accordingly heated in passage by installing or being directly embedded in mould.Sensing module includes heat
Resistance temperature collection sensor, current sensor and analog quantity unit, as shown in Figure 1, being respectively used to detect each heating in real time logical
The temperature and electric current in road, in embodiments of the present invention, employ the control modes of the double feedbacks of temperature and electric current, behind will specifically
It is bright.
Voltage regulating module 122 is set in heating passage, and each voltage regulating module corresponds to a heating passage, it is used to receive
The control signal that control device 11 generates, the output voltage that resistive heater is adjusted according to the control signal are logical to heating to realize
The computer heating control in road.
In one embodiment of the invention, control device 11 is using FUZZY ALGORITHMS FOR CONTROL generation control signal, such as Fig. 4 institutes
Show, specifically include following steps：
Step S410, according to the temperature and default heating-up temperature and heating time difference of each heating passage collected
Determine the firing rate of each heating passage, and each heating default heated current of passage is determined according to firing rate.
Step S420, fuzzy ratio is carried out to the difference of the electric current of default heated current and each heating passage collected
Compared with.
Step S430, Fuzzy Calculation generation control signal is carried out to the result of Fuzzy comparisons.
The control principle of FUZZY ALGORITHMS FOR CONTROL is as shown in Figure 5.
In addition, heated protective module is additionally provided with electrical heating detects regulating device 12, by monitoring heating zone in real time
In domain respectively heating passage voltage, electric current and temperature come realize to heat passage protection.
It is compared by the temperature and real-time design temperature of detection, need is calculated according to the difference and setting compared
The firing rate to be realized (i.e. electric current), then by the actual running current of current transformer detection, reality is made by voltage regulating module
Border heated current is equal to setting heated current.Operand can be reduced by Fuzzy Calculation, program is simple, fast response time, and
Reduce the requirement to hardware device.
In an embodiment of the present invention, by using fuzzy control method, realized based on temperature, the double feedbacks of electric current to heating
The accurate control of (temperature), overcomes electric heating system control system device and is easily damaged, is high, indirect to use environment requirement
The shortcomings that current control.Numerous and diverse calculating using pid algorithm and complicated program are removed at the same time, using simple Fuzzy comparisons,
Each heating passage individually controls, and controls program simple and flexible, simultaneously as adding current feedback, control accuracy is higher, can
To accomplish the quick response of temperature adjustment.
It is integrated in order to strengthen the informationization of the heating control system of the embodiment of the present invention and automation, at one of the present invention
In embodiment, 10 computer heating control casees are set altogether, all computer heating control casees realize centralized Control by 1 industrial personal computer, realize life
Produce the calling being formulated, information gathering preservation, production process monitoring, production abnormal alarm, the information-based networking of creation data etc., such as figure
Shown in 1, each computer heating control case is communicated to connect by Industrial Ethernet and industrial personal computer, the industrial personal computer further by Ethernet with it is remote
Process control end communicates to connect.In an embodiment of the present invention, the temperature for completing passage is coordinated using control device and PLC controller
Control, simplifies control flow, improves control accuracy, stability is good.
By Industrial Ethernet interface, the data of the heating system can very easily with the information such as MES, SAP of factory
Change system is integrated, and realizes the information system management of plant produced.The data exchange framework of control system is as shown in Figure 6.
The megawatt wind turbine blade mould electric-heating control system of the embodiment of the present invention is electrically produced using ripe technical grade
Product are formed, and all kinds of device operation stabilities are high, and failure rate is low, adapts to the severe industrial production environment of wind-powered electricity generation industry, and device
It is versatile, it is easy to maintain, cost is low.
The megawatt wind turbine blade mould electric-heating control system control strategy of the embodiment of the present invention is simple, control accuracy
Height, realizes being precisely controlled for temperature, control accuracy and security are far above existing feedback-less system, favorably by increasing feedback
In control product quality.
The megawatt wind turbine blade mould electric-heating control system of the embodiment of the present invention passes through modular computer heating control case
Design, not only simplify the cabling amount of primary circuit cable, and realize the completely isolated of secondary circuit, system fortune
Row is safe.
The megawatt wind turbine blade mould electric-heating control system of the embodiment of the present invention realizes electricity using intelligent pressure regulating module
Pressure is adjusted, it can preferably realize that power network current balances when running, while avoid the impact stopped in wink from wink to power grid, reduce
Pollution to power grid.
The megawatt wind turbine blade mould electric-heating control system level of informatization of the embodiment of the present invention is high, use industry with
Too for net as communication network, control mode is flexible, can be monitored by touch-screen, host computer, MES system etc., expandability
It is good.
The megawatt wind turbine blade mould electric-heating control system of the embodiment of the present invention can be very easily industrial with other
Control software such as MES system etc. carries out data exchange, beneficial to the informatization for realizing factory, beneficial to the automation of lifting factory
Level, reduces the artificial monitoring amount of production process, prospect with good economic efficiency.
Although disclosed herein embodiment as above, the content only to facilitate understand the present invention and adopt
Embodiment, is not limited to the present invention.Any those skilled in the art to which this invention pertains, are not departing from this
On the premise of the disclosed spirit and scope of invention, any modification and change can be made in the implementing form and in details,
But the scope of patent protection of the present invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (9)
1. a kind of megawatt wind turbine blade mould electric-heating control system, the megawatt wind turbine blade mould are divided into some
A heating passage, if the electric-heating control system includes control device and heats passages correspondingly with described several
Dry electrical heating detection regulating device, the electrical heating detection regulating device include sensing module and voltage regulating module；
The sensing module is arranged in the heating passage, it is used for the electric current and temperature that gather the heating passage in real time；
The control device is used to generate control signal based on the electric current and temperature；
The voltage regulating module is used for the output voltage that resistive heater is produced according to the control signal.
2. system according to claim 1, it is characterised in that the sensing module includes：
Resistance and temperature collecting unit, it is used for the temperature for obtaining the heating passage；And
Current acquisition analog quantity unit, it is used for the electric current for obtaining the heating passage.
3. system according to claim 2, it is characterised in that the control device includes：
Heated current computing module, when it is according to each temperature for heating passage collected and default heating-up temperature and heating
Between respectively determine it is each heating passage firing rate, and according to the firing rate determine it is each heating passage it is default heating electricity
Stream；
Fuzzy comparisons module, the difference of its electric current to the default heated current and each heating passage collected carry out mould
Paste compares；
Fuzzy Calculation module, its result to the Fuzzy comparisons carry out Fuzzy Calculation and produce control signal.
4. system according to claim 3, it is characterised in that the electrical heating detection regulating device further includes：
Heated protective module, it monitors voltage, electric current and the temperature of the heating passage in real time, to realize to the heating passage
Protection.
5. system according to any one of claim 1 to 4, it is characterised in that the control device passes through industrial ether
Net is communicated to connect with industrial personal computer, and the industrial personal computer is communicated to connect by Ethernet and remote control terminal.
6. a kind of megawatt wind turbine blade mould electric heating controlling method, including：
The megawatt wind turbine blade mould is divided into several heating passages；
The electric current and temperature of the heating passage are gathered in real time；
Control signal is generated based on the electric current and temperature；
The output voltage of resistive heater is produced according to the control signal.
7. according to the method described in claim 6, it is characterized in that, using FUZZY ALGORITHMS FOR CONTROL based on the electric current and temperature come
Generate control signal.
8. the method according to the description of claim 7 is characterized in that the FUZZY ALGORITHMS FOR CONTROL includes：
Determine that each heating is logical respectively according to the temperature of each heating passage collected and default heating-up temperature and heating time
The firing rate in road, and each heating default heated current of passage is determined according to the firing rate；
Fuzzy comparisons are carried out to the difference of the electric current of the default heated current and each heating passage collected；
Fuzzy Calculation generation control signal is carried out to the result of the Fuzzy comparisons.
9. according to the method described in claim 8, it is characterized in that, the megawatt wind turbine blade mould is divided into some
A heating passage, including：
Function division is carried out to wind-powered blade mold according to technological requirement；
The megawatt wind turbine blade mould is drawn in the requirement of result and heated current and heating process based on function division
It is divided into several heating passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940435.3A CN108021023A (en) | 2016-11-01 | 2016-11-01 | Megawatt wind turbine blade mould electric-heating control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940435.3A CN108021023A (en) | 2016-11-01 | 2016-11-01 | Megawatt wind turbine blade mould electric-heating control system and control method |
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| CN108021023A true CN108021023A (en) | 2018-05-11 |
Family
ID=62069986
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610940435.3A Pending CN108021023A (en) | 2016-11-01 | 2016-11-01 | Megawatt wind turbine blade mould electric-heating control system and control method |
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| CN (1) | CN108021023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110955287A (en) * | 2019-11-04 | 2020-04-03 | 武汉天富海科技发展有限公司 | Full-automatic isolated multichannel intelligent heating device |
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Application publication date: 20180511 |