CN107829877A - A kind of wind power generating set low-temperature starting control method - Google Patents
A kind of wind power generating set low-temperature starting control method Download PDFInfo
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- CN107829877A CN107829877A CN201711061260.XA CN201711061260A CN107829877A CN 107829877 A CN107829877 A CN 107829877A CN 201711061260 A CN201711061260 A CN 201711061260A CN 107829877 A CN107829877 A CN 107829877A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 238000004146 energy storage Methods 0.000 claims description 24
- 238000005086 pumping Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 8
- 239000002828 fuel tank Substances 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims 2
- 238000007689 inspection Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 38
- 238000012544 monitoring process Methods 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to technical field of wind power generation, and in particular to a kind of wind power generating set low-temperature starting control method.The wind power generating set low-temperature starting control method, processing judgement is carried out to gathered data by the collection to unit associated temperature, pressure and running state data, and with reference to master control system, provide execution system heating feedback control.Its advantage is：The control mode test data and control mode are simple, and the cold-starting time is shorter, and reliability is high, cost is low.
Description
Technical field
The invention belongs to technical field of wind power generation, and in particular to a kind of wind power generating set low-temperature starting control method.
Background technology
Pitch-controlled system is one important building block of wind power generating set, however, in high altitude localities or high latitude
Low temp area, the electrical equipment of the complete machine fault rate in cold-starting can increase.This not only have impact on the generating capacity of unit, drop
Low unit availability, and reduce the service life of complete machine.In particular for hydraulic control system, under cryogenic
Oil viscosity step-down can be caused, cause the suction capacity of hydraulic pump body to decline, lose and increase along stroke pressure, and it is close to reduce cylinder body
Sealing property.When serious hydraulic valve can be caused stuck, oil filter blocks so that whole hydraulic system can not work.
The A of patent CN 102305177 provide a kind of wind-driven generator low-temperature and start control method, by being in control
Rotary speed threshold value and time threshold corresponding to setting in system, and wind speed, temperature and the working of blower fan are combined, to blower fan
Realize under cryogenic and lift rotating speed step by step.The patent can reduce the electromagnetic impact and thermal stress of cold-starting, reduce wind
Machine component damage.But specific requirement is not done in the hardware device control to blower fan.The A of CN 103195652 propose one kind and are directed to
Gear-box and the control of the cold-starting of the low progress of generator-temperature detection.By realizing that unit dallies to oil temperature detection in the control mode
Operation, while starter receiver case lubricating pump and generator heating tape, realize disturbance heating and heating of the oil temperature under idle running
Device is heated up, and the failure of blower fan is monitored.Cold-starting logic realization is jumped out in the case of the aerodynamic conditions of unit are met
The low-temperature safety of unit starts.The patent can reduce start-up course at low temperatures, reduce the work of staff
Intensity, improve generated energy.However, the patent is also not directed to the cold-starting of the variable blade control system of blower fan.CN
202579041 U provide a kind of wind power generating set cold-starting device, carry out the heating of stand under load device from inside to outside.By right
The detection of ambient temperature, switch normal temperature and low temperature that solenoid directional control valve realizes pipeline when detecting cryogenic conditions
Switching.The heating that liquid is realized in heating is carried out to fluid by heater under cryogenic, so as to avoid stand under load device from producing
The bad phenomenon such as embrittlement and dry friction, realizes the cold start-up of set steady.The U of CN 205101172 propose a kind of based on electrically mutual
Lock the low-temperature starting controller of device.First and second power ends are connected by two-way electromagentic switching apparatus, by controlling not
Same electromagnetic relay heating and the switching normally started.The safe operation of Unit Low environment is the method achieve, but not
Control logic is illustrated.
The content of the invention
A kind of the defects of present invention is in order to make up prior art, there is provided wind power generating set low-temperature starting control method.
The present invention is achieved through the following technical solutions：
A kind of wind power generating set low-temperature starting control method, including environment monitoring module, temperature detecting module, pressure detecting mould
Block, fault detection module, control system and execution system, the environment monitoring module detect the oil of unit by temperature sensor
Temperature and wheel hub temperature；Pressure detecting module is used for the energy storage pressure numerical value for detecting unit；Fault detection module is used for deteminate machine
Group is with the presence of fault-free, the particularly fault detect of low temperature correlation；Control system carries out logic decision for cryogenic conditions and given
Controller output signal corresponding to execution system；Execution system is used to respond the device start-stop under cryogenic conditions.
As the further explanation of above-mentioned technical proposal, main modular is described below：
The environmental monitoring module includes the oil temperature sensor to oil temperature detection and the temperature sensor to wheel hub temperature detection,
Temperature sensor by oil temperature numerical value before test starting determine whether perform cold-starting control logic, its temperature value be more than-
Normal start is performed at 15 DEG C；Its temperature performs cold-starting logic control when being less than -30 DEG C, to becoming oar hydraulic station accumulator pressure
Power is detected, proportioning valve and magnetic valve valve block corresponding to startup when pressure meets valve body operation condition.
Fault detection module is used for the failure situation for detecting unit, and low temperature is performed when unit is without cold-starting dependent failure
Start logic.
The control system is mainly comprising the logic decision and the output of execution system to temperature, pressure and malfunctioning module
Control, by confirming whether unit equipment meets cold-starting condition to collecting temperature data, pressure data, and meeting low temperature
The output of execution system controller is given after condition.
Further, the execution system refers mainly to heating module, wherein being heated comprising pumping plant heating module and valve body
Band, pumping plant heating module mainly heat to fuel tank fluid, avoid pumping plant suction capacity from declining situation and occur；The heating of valve body
Band can effectively realize the heating of fluid in valve body, avoid valve body from occurring blocking or stuck situation.
Compared with prior art, the advantage of the invention is that：
The present invention is carried out at heating based on temperature detection, pressure detecting and by main control PLC logic decision module to execution system
Reason realizes Unit Low and starts control, especially for hydraulic variable propeller system, because its pipeline is longer, glues resistance under cryogenic
Larger easily occur that line loss is larger and valve body switches stuck situation, thus using being synchronized for pumping plant and valve body plus
Thermal control, pumping plant no-load running realize the uniform heating of fuel tank oil temperature and pipeline and pipeline are realized and filters；Valve body heating tape is real
The quick heating of existing Primary Component proportioning valve, being switched fast for oil circuit is realized, and oil temperature is realized by the heating of comparative example valve
Local heating, invention control is simple, and unit heat efficiency high, the cold-starting time is shorter, can improve the generating of unit
Measure and strengthen the security of cold-starting.
The beneficial effect of this patent is：
Based on existing patent feature, the main advantage of this patent is：
1) to becoming judgement of the oar hydraulic system cold start controlling using two aspects：Become the low-temperature heat of oar hydraulic station and become oar and perform
Device valve body computer heating control, realize the Omnidirectional heating control to whole hydraulic pitch control system.Homogeneous heating and quick, can
To realize that the fast low temperature of unit starts；
2) it is monitored to becoming oar hydraulic system low temperature dependent failure, is controlled in the case of it low temperature failure be present using low temperature,
Satisfaction resets dependent failure when requiring, the normal operation of unit is realized, by the cold operation that unit is realized to failure monitoring
Safeguard protection.
By the above method, easy and effective, Ke Yibao is controlled for wind power generating set hydraulic variable propeller system cold-starting
Effective operation of card unit under cryogenic, the control mode test data and control mode are simple, the cold-starting time compared with
Short, reliability is high, cost is low.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is this patent general system set-up block diagram；
Fig. 2 is that this patent implements particular flow sheet.
In figure, 1 control system, 2 execution systems, 3 fault detection modules, 4 pressure detecting modules, 5 temperature detecting modules.
Embodiment
Core of the present invention is proposes a kind of wind power generating set hydraulic variable propeller system low-temperature starting control method, by machine
The collection of group associated temperature, pressure and running state data, and processing judgement is carried out to gathered data by master control system, give
Go out the computer heating control of execution system 2.The control mode test data and control mode are simple, and the cold-starting time is shorter, reliability
Height, cost are low.
To make the purpose of the embodiment of the present invention, technical scheme clearer, with reference to the related attached of the embodiment of the present invention
Figure, is completely described to the embodiment of the present invention.The embodiment of this patent description is part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
Specific embodiment
Accompanying drawing 1 is a kind of system block diagram of wind power generating set low-temperature starting control method provided by the invention, specific real
Apply as follows：
Accompanying drawing 1 gives the whole flow process block diagram that Unit Low starts control method, and the low temperature detecting and controlling system 1 mainly wraps
Include：Temperature detecting module 5, pressure detecting module 4, fault detection module 3, control system 1 and execution system 2 form.The ring
Border monitoring modular detects the oil temperature and wheel hub temperature of unit by temperature sensor；Pressure detecting module 4 is used to detect unit
Energy storage pressure numerical value；Fault detection module 3 is used for the malfunction for judging unit, particularly low temperature correlation fault detect；Control
System 1 processed is used to carry out controller output signal corresponding to logic decision and given execution system 2 for cryogenic conditions；Perform system
System 2 is used to respond the device start-stop under cryogenic conditions.
The detecting system temperature first from accompanying drawing 2, the cold-starting of unit, it is less than -15 becoming oar hydraulic station oil temperature
DEG C when start pumping plant heater and proportioning valve heating tape.Optionally, according to unit capacity and pumping plant, appropriate heater is selected,
The heater of this example selection is 2.5kW capacity.Proportioning valve heating tape power is 30~50W.
It should be noted that being divided into two decision conditions for cold-starting control, one is low for becoming oar hydraulic station
Temperature judges that, secondly being to be judged for Bian Jiang executing agencies low temperature, can just exit low temperature when two conditions meet simultaneously holds
Line program, it is specific as follows：
For becoming oar hydraulic pressure stand control, read according to temperature sensor become oar hydraulic station oil temperature data first.
Further, temperature detecting module 5 detects the wheel hub temperature of unit and becomes oar hydraulic station oil temperature temperature.
In being detected to oil temperature, when oil temperature is less than -30 DEG C, now unit is in cryogenic conditions, is unsatisfactory for normal
Machine condition is opened, therefore starts pumping plant heater and oil temperature is heated.Under normal condition, now environment temperature is less than -20 DEG C, because
This proportioning valve heating tape also starts, and carries out proportioning valve heating.Magnetic valve 1 is performed when its temperature value is higher than -30 DEG C to power off, and is carried out
The startup of electric-motor pump, build pressure for change oar hydraulic station and prepare.
Further, when pumping plant heating oil temperature is less than -15 DEG C, pumping plant heater continuous heating, and now magnetic valve 1 is disconnected
Electricity, electric-motor pump, which is powered, to be run, and carries out the unloaded filtering of fluid, accelerates the oil temperature uniformity and service hoisting oil temperature numerical value of fluid.
Further, when detecting that oil temperature is more than -15 DEG C, now magnetic valve 1 is obtained electric, and fluid is not entered by idle loop
Row oil circuit filters, and now carries out energy storage pressure detection.
Further, energy storage pressure is detected by pressure sensor when magnetic valve 1 obtains electric.Detecting it
When numerical value is less than 260bar, magnetic valve 1 persistently it is electric to accumulator carry out pressurising.
Further, performed when judging to become oar hydraulic station oil temperature more than 15 DEG C and normally open machine operation.
It should be noted that magnetic valve 1 is a normally closed 2/2-way direction valve, dead electricity causes oil under cryogenic
Liquid forms loop by pumping plant → fuel tank, and oil circuit is carried out by the disturbance of pumping plant to filter cleaning and heating, increases oil liquid temperature,
Reduce oil viscosity.Hydraulic station builds pressure and to actuator pressurising when the magnetic valve obtains electric, realizes the action of Bian Jiang executing agencies.
For become oar actuating mechanism controls testing conditions according to temperature sensor read become oar hydraulic station oil temperature data and
Wheel hub temperature data.
Further, start proportioning valve heating tape comparative example valve when wheel hub temperature value is less than -20 DEG C to be heated.At it
Numerical value performs further low-temperature operation when being higher than -20 DEG C.
Further, start proportioning valve heating tape when oil temperature is less than -30 DEG C, and magnetic valve 4 and 3 is powered off, magnetic valve 2
With electricity on proportioning valve 1.So operation has two effects, first, energy storage pressure is higher, can now form unloaded hydraulic circuit
Comparative example valve loop is cleaned and the fluid in accumulator and pipeline is carried out into temperature adjustment；Second, in accumulator pipeline through valve 2
→ proportioning valve → valve 3 in oil return box, can detect energy storage pressure value changes situation by the road.If energy storage pressure now is not
Reduce, then illustrate that the path does not turn on, only have proportioning valve blocking or stuck situation to be present in device, it is therefore desirable to comparative example valve
Heated.The continuous heating in the case of being unsatisfactory for is until energy storage pressure value drops into below 145bar and just further controlled
System operation.
Further, when detecting that energy storage pressure is reduced to below 145bar, illustrate that now pipeline has been turned on, can
Powered off with comparative example valve and magnetic valve 2, remain in situ, follow-up building can be carried out and press work.In judging heating tape start and stop
Wheel hub environment temperature is introduced as decision condition, disconnection proportioning valve heating tape, no when wheel hub environment temperature is higher than -20 DEG C
Then, proportioning valve heating tape is persistently carried out to be heated.
It should be noted that magnetic valve 4 and 2 is the normally closed reversal valve of 2/2-way, magnetic valve 3 is two-bit triplet reversal valve,
Proportioning valve 1 is 3-position 4-way proportional reversing valve, and point left position and right position control voltage, voltage range is -10~+10V.
In the case where becoming oar hydraulic pressure stand control and the execution structure control of change oar while meeting, magnetic valve 1 powers off, magnetic valve
2,3,4 and the left position of proportioning valve obtain it is electric, formation build press strip part.
It should be noted that oar and feathering are opened to one circulation of progress of change oar oil cylinder in the case where building press strip part and meeting
Action, on the one hand make it that become oar oil cylinder inner fluid uniformly mixes with fuel tank fluid, improves oil product；On the other hand checking becomes oar oil cylinder
It whether there is interim card situation in action process.
After above-mentioned one cycle period motion of change oar oil cylinder has been performed, oil is flowed into because becoming the in-oil cylinder cooling oil of oar
Case, it is therefore desirable to judge whether tank temperature is less than -15 DEG C again.Pumping plant is again started up when tank temperature is less than -15 DEG C to add
Hot device is heated；Otherwise, pumping plant heater is closed, jumps out cold-starting control.
Finally it should be noted that：Above example is merely to illustrate technical scheme, rather than its limitations；Reference
The present invention is described in detail previous embodiment, it will be understood by those within the art that：To previous embodiment
The modification of technical scheme carries out equivalent substitution to which part or all technical characteristic, and these modifications are still in the present invention
The technical reform scheme scope of embodiment.
Claims (8)
1. a kind of wind power generating set low-temperature starting control method, including temperature detecting module, pressure detecting module, fault detect
Module and control system and execution system, it is characterised in that comprise the following steps：Become oar liquid when temperature detecting module detects
Pressure station oil temperature or wheel hub temperature perform low temperature procedure when being less than given threshold and control component heating enabled；In temperature conditionss
When meeting, energy storage pressure value changes situation is detected, further action is performed after pressure value meets threshold determination condition；Low
During warm program performs, master control fault detection module judges the failure situation of unit, particularly determines whether there is low temperature and blocking
Failure situation occurs；When above-mentioned condition meets, the control system of unit judges to become oar hydraulic station loop and become oar to perform back
The temperature on road, pressure condition simultaneously issue start and stop instruction to pumping plant in execution system and valve body heating tape.
2. a kind of wind power generating set low-temperature starting control method according to claim 1, it is characterized in that：The temperature inspection
Module is surveyed by decision-making system temperature, that is, becomes oar hydraulic station oil temperature and wheel hub temperature, carries out the mould of normal startup and cold-starting
Formula switches, and temperature value is set as -15 DEG C in logic switch, when oil temperature is higher than -15 DEG C, is now unsatisfactory for cryogenic conditions, unit
Component normal start can be performed with normal work；When detecting that oil temperature is less than -15 DEG C, now in order to ensure unit work
Make reliable and stable, execution cold-starting program, cold-starting programme-control object, which includes, becomes oar hydraulic station control loop and change oar
Perform control loop two-way logic and perform low temperature judgement.
3. a kind of wind power generating set low-temperature starting control method according to claim 1, it is characterized in that：The change oar liquid
Pressure station loop judges that pumping plant start and stop and valve body act situation according to tank temperature, when program switches to low temperature mode, becomes oar
Hydraulic station pumping plant heater is opened, and oil temperature is heated, and when detecting that tank temperature is higher than -30 DEG C, magnetic valve 1 powers off,
Motor pump startup, when detecting that tank temperature is higher than -15 DEG C, perform energy storage pressure detection；It is less than -15 DEG C in tank temperature
When, pumping plant heater, electric-motor pump and the continuous firing of magnetic valve 1, until meeting that control logic redirects condition, when magnetic valve 1 powers off
Loop switch realizes connection through valve block 1 to fuel tank simultaneously to idle loop, now accumulator loop, pumping plant loop, and the zero load is returned
Realize three aspect functions in road：One realizes the cleaning of pipeline；Secondly realizing the detection of energy storage pressure, detected for energy storage pressure
Prepare；Thirdly realize the backflow and the regulation of oil temperature in whole loop of fluid in accumulator.
4. a kind of wind power generating set low-temperature starting control method according to claim 1 or 3, it is characterized in that：The change
Oar hydraulic station loop judges the break-make situation of valve body 1 according to energy storage pressure, right when detecting that tank temperature is higher than -15 DEG C
Magnetic valve 1 is persistently powered and detects whether energy storage pressure is less than given threshold 260bar, if being less than given threshold, performs electricity
The energization preparation system of magnet valve 1 builds pressure, and energy storage pressure judges that when meeting energy storage pressure testing conditions magnetic valve 1 persistently breaks
Electricity, this time-varying oar hydraulic station circuit controls logic are finished, it is necessary to judge becoming oar execution loop logic simultaneously.
5. a kind of wind power generating set low-temperature starting control method according to claim 1, it is characterized in that：The change oar is held
In the case where switching to low temperature control model, proportioning valve heating tape is opened in row loop, and comparative example valve is heated, it is necessary to illustrate,
The power of proportioning valve heating tape is 30~50W, can be adjusted according to demand for heat, become oar perform loop be powered in magnetic valve 2, electricity
Electricity in the power-off of magnet valve 4 and 1 left position of proportioning valve, and judge whether energy storage pressure declines and perform pressure judgement.
6. a kind of wind power generating set low-temperature starting control method according to claim 5, it is characterized in that：The magnetic valve
2 be the joint in accumulator loop and change oar actuator loop, is realized and confluxed or to accumulator pressurizing work(by magnetic valve 2
Can, acted by the valve body, realize fluid loop equally there are three aspects to fuel tank, the idle loop：One is real
The cleaning of existing pipeline；Secondly realizing the detection of energy storage pressure, prepared for energy storage pressure detection；Thirdly realize in accumulator
The regulation of oil temperature in the backflow of fluid and whole loop.
7. a kind of wind power generating set low-temperature starting control method according to claim 1, it is characterized in that：The accumulator
The judgement of pressure can be as subsequent logic judgement and detection ratio valve 1 whether there are interim card or low temperature failure conditions, than
Example valve is monitored in the case of being persistently powered to energy storage pressure, when energy storage pressure then illustrates that this time-varying oar is held less than 145bar
Row idle loop meets condition, and fluid enters fuel tank through proportioning valve, and proportioning valve heating tape is worked, when energy storage pressure is higher than
145bar then illustrates that now proportioning valve is powered, it is necessary to continue comparative example valve still in interim card state and keeps proportioning valve to heat band logical
Electricity, next step control logic is performed after energy storage pressure meets condition, now proportioning valve 1 powers off, and magnetic valve 2 powers off, now
Pumping plant continuous firing can realize accumulator pressurizing.
8. a kind of wind power generating set low-temperature starting control method according to claim 3, it is characterized in that：The change oar liquid
Oar-feathering of opening that the judgement in pressure station loop and change oar execution loop meets to perform once change oar oil cylinder during condition simultaneously acts, tool
Body, magnetic valve 1 powers off, and magnetic valve 2, magnetic valve 3 and magnetic valve 4 and proportioning valve 1 are powered, and becomes oar hydraulic system and forms one
Overall control loop, now hydraulic cylinder form one and open oar action, when the right position of proportioning valve obtains electric, magnetic valve 3 powers off, now hydraulic pressure
Cylinder forms a feathering action, needs to detect whether tank temperature is less than -15 DEG C after becoming oar oil cylinder execution, because in accumulator
Oil temperature is relatively low, can make it that tank temperature is relatively low after fuel tank is entered, it is therefore desirable to judges that oil temperature numerical value decides whether to oil again
Temperature heating, when detecting that tank temperature is more than -15 DEG C, pumping plant heater is closed, and jump out cold-starting control program；It is no
Then, persistently start pumping plant heater to heat fluid.
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| CN201711061260.XA CN107829877A (en) | 2017-11-02 | 2017-11-02 | A kind of wind power generating set low-temperature starting control method |
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| CN201711061260.XA CN107829877A (en) | 2017-11-02 | 2017-11-02 | A kind of wind power generating set low-temperature starting control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112598209A (en) * | 2020-10-23 | 2021-04-02 | 河北新天科创新能源技术有限公司 | Evaluation and early warning method for generator heat dissipation system of wind turbine generator |
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