CN102353534A - Fault simulation experiment table for step-up drive system of wind-driven generator set - Google Patents
Fault simulation experiment table for step-up drive system of wind-driven generator set Download PDFInfo
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- CN102353534A CN102353534A CN2011101799696A CN201110179969A CN102353534A CN 102353534 A CN102353534 A CN 102353534A CN 2011101799696 A CN2011101799696 A CN 2011101799696A CN 201110179969 A CN201110179969 A CN 201110179969A CN 102353534 A CN102353534 A CN 102353534A
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Abstract
The invention discloses a fault simulation experiment table for a step-up drive system of a wind-driven generator set, which consists of two parts, i.e. a power source and fault simulation. The power source consists of a frequency converter, a variable-frequency motor and a speed reducer and is used for simulating the input rotation speed of an impeller rotor when the wind-driven generator set runs, and the fault simulation consists of a primary planetary gear step-up box, a secondary parallel shaft gear step-up box and a magnetic powder brake and is used for simulating a one-gear two-parallel-shaft gear step-up drive system and a dynamic load of the wind-driven generator set. Through the experiment table, the single and compound faults of components, i.e. a planetary wheel, a sun wheel and a bearing of a planetary step-up part as well as a gear, a bearing and the like of a parallel shaft step-up part in the step-up drive system of the wind-driven generator set can be simulated; the fault simulation experiment table for the step-up drive system of the wind-driven generator set can be used for researching the fault modeling and damage evolution mechanism of the step-up box of the wind-driven generator set and searching a characteristic extracting method of a vibrating signal under a variable load and a variable speed; the theoretical support and the technical support are supplied for the state monitoring of the wind-driven generator set; and the safe running of the wind-driven generator set is guaranteed.
Description
Technical field
The present invention relates to machine driven system fault simulation experimental technique field, be specifically related to a kind of fault simulation device of wind power generating set speedup kinematic train.
Background technology
Wind-power electricity generation has advantages such as low-carbon environment-friendly, resource be renewable, has received the great attention of countries in the world.China's wind-power electricity generation fast development, the newly-increased wind-powered electricity generation installed capacity of China in 2010 reaches 18927.99MW, and the accumulative total installed capacity reaches 44733.29MW, the whole world, two residence first.Wind power generating set is as the key equipment of wind power generation, and its automaticity is high, cost an arm and a leg, and complex structure, running environment is abominable, and it is higher that the cabin is liftoff, in case break down or damage, will cause the tremendous economic loss, even possibly cause catastrophic failure.The large fan of the 1.5MW in land, pylon up to 70m about, about the heavy 15t of gear case; If gear case breaks down, only dismounting expense is just up to more than 700,000 yuan, if add transportation and maintenance cost; Then at least up to 1,000,000 yuan; This is equivalent to 10%～20% of blower fan total production cost, but also can cause blower fan to shut down the several months long, brings tremendous loss for the production of wind field.Offshore wind turbine is owing to the difficulty of dismounting, and maintenance need be set out large ship and tank crane, even transfers helicopter, and its maintenance cost is more than 2 times of land at least.According to statistics, the fault that is caused by kinematic train accounts for about 50% of wind power generating set fault total degree.Yet wind power generating set not only receives the effect of dynamic load that at random aerodynamic load, inertial force and different running status cause etc.; And its inside is the complex electromechanical systems that integrates machinery, electronics, electric, hydraulic pressure, and this makes the Fault Identification difficulty particularly of kinematic train damage check, particularly epicyclic gearbox of wind power generating set.Therefore, the status monitoring and the method for diagnosing faults of research wind power generating set speedup kinematic train have great importance to the safe and reliable operation that guarantees wind power generating set.
Wind power generating set converts wind energy into mechanical energy through impeller, relends the gear increaser of walk help star the required high rotating speed of generator is brought up in the slow-speed of revolution, thereby realize the conversion of mechanical energy to electric energy.The speedup kinematic train is the critical component that influences the normal operation of aerogenerator, and mostly the planetary gearbox that uses at present is " planet two is parallel " structure.Because wind-driven generator group wheel box adopts the planet wheel transmission; Complex inner structure and compound transmitting movement make fault signature inter-modulation and coupling mutually; Bring difficulty to Fault Identification, and still lack the micromechanism of damage and the corresponding state monitoring method scheduling theory research thereof of speedup planetary gear system at present.So; Under the prerequisite that lacks its corresponding theory foundation and technical support; Indiscriminately imitate the fault that existing these method for diagnosing faults remove " diagnosis " planetary gearbox simply, can not occur the phenomenon of " taking a part for the whole " unavoidably, conclusion often is difficult to convincing.Therefore need its failure mechanism of design feature research and failure criteria, vibration signal processing and feature extracting method under research variable load, the variable speed, accurately identification and fault location source to planetary gearbox.
When the failure mechanism of wind power generating set planet wheel speedup system and diagnostic method theory are studied, need be to the theoretical analysis result checking that experimentizes.And the fault simulation device of more existing machine driven systems seldom relates to the gear increaser transmission, does not more relate to the planet wheel speedup.In other words; At present there is not the fault simulation experimental provision of wind-power electricity generation group planet speedup kinematic train to be used to research and analyse as yet; Therefore proposition of the present invention; Remedied the blank of planet wheel speedup kinematic train experimental provision, and overcome under big speed increasing ratio, planetary gearbox is the defective of " self-locking " easily; And the topological structure through reasonable disposition speedup kinematic train; Remedied ratio of gear and distributed the improper planet wheel stressing conditions that causes harsh, more be prone to take place the deficiency of damage, and in 10r/min～22.5r/min scope, be interrupted or change continuously through the output speed that frequency converter can the control of conversion reducing motor; The input speed of vane rotor in the time of not only can simulating wind power generating set and normally move; And can simulate the changed speed operation state of variable-pitch variable-speed wind generating unit, and and the dynamic load during through the operation of magnetic powder brake simulation wind power generating set, thus make the running status of simulated experiment platform farthest near the real-world operation situation of wind power generating set speedup kinematic train.
Wind power generating set speedup driving unit fault simulated experiment platform provided by the invention is to the failure mechanism and the failure criteria of research speedup epicyclic gearbox; Vibration signal processing and feature extracting method under research variable load, the variable speed; Accurately discern and the fault location source; Has important engineering application value, for the status monitoring and the fault diagnosis of wind power generating set planetary gearbox provides theoretical foundation and technical support.
Summary of the invention
The objective of the invention is to provides a kind of wind power generating set speedup driving unit fault simulated experiment platform to the deficiency of wind power generating set planetary gearbox status monitoring and Fault Identification existence; Be used to simulate the independent or combined failure of wind power generating set gearbox planet speedup part planetary gear, sun gear, planet carrier, bearing; The coupling fault of the independent or combined failure of parallel shafts speedup operative gear, bearing and planet speedup part and parallel shafts speedup operative gear, bearing; Research wind power generating set planet gearbox fault micromechanism of damage and failure criteria; Vibration signal processing and feature extracting method under research variable load, the variable speed; Form a whole set of about methods such as the collection of wind power generating set planet gearbox fault-signal, Fault Identification, fault location source and quantitative Diagnosis,, guarantee the safe and reliable operation of wind power generating set for the wind power generating set status monitoring provides theoretical foundation and technological guidance; Avoid the generation of serious accident, improve economic and social benefit.
For achieving the above object, technical scheme of the present invention is following:
This experiment table is made up of experiment porch, frequency converter, variable-frequency motor, speed reduction unit, primary planet pinion gearbox, two-stage parallel axis gear speedup case, magnetic powder brake; Variable-frequency motor is connected with speed reduction unit; Speed reduction unit is connected with the primary planet pinion gearbox; The primary planet pinion gearbox is connected with the two-stage parallel axis gear speedup case; The two-stage parallel axis gear speedup case is connected with magnetic powder brake, and variable-frequency motor, speed reduction unit, primary planet pinion gearbox, two-stage parallel axis gear speedup case, magnetic powder brake all are installed on the experiment porch.
The output speed of speed reduction unit is adjustable continuously in 10r/min～22.5r/min scope.
The primary planet pinion gearbox separates with the two-stage parallel axis gear speedup case.
Primary planet pinion case and parallel-axes gears case are step-up gear, and its ratio of gear was followed successively by 1: 5 and 1: 19, and overall ratio is 1: 95.
The primary planet pinion gearbox adopts external toothing to fix, planet carrier input, the inner structure of sun gear output.
The present invention is owing to adopted above technical scheme and reasonable structural design; Make in whole experiment; The actual motion state of speedup kinematic train in the time of can farthest simulating wind power generating set and run well, thus technical support effectively is provided for the failure mechanism of wind power generating set speedup kinematic train and the research of condition detection method scheduling theory.
Advantage of the present invention is:
1. the present invention has remedied the blank of wind power generating set planet speedup driving unit fault analogue experiment installation, can study fault micromechanism of damage and the condition detection method of planet wheel speedup kinematic train under multiple operating condition through this experiment table;
2. the design of the speedup of primary planet pinion case and two-stage parallel axis gear case is consistent with existing most of wind power generating set gearbox structure, and overall ratio is 1: 95;
3. planet wheel speedup part is partly separated with the parallel-axes gears speedup, is easy to study separately fault characteristic and micromechanism of damage, is convenient to discern separately or combined failure;
4. output speed that can the control of conversion reducing motor changes in 10r/min～22.5r/min scope, is used to simulate the actual input speed of wind power generating set impeller;
5. can simulate the variable speed running status of wind power generating set through the output speed of stepless control variable-frequency motor, be used for research under variable speed, the state monitoring method of planetary gearbox and failure evolution mechanism.
Description of drawings
The general structure synoptic diagram of Fig. 1 wind power generating set speedup driving unit fault simulated experiment platform.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done explanation in further detail.
With reference to figure 1, a kind of wind power generating set speedup driving unit fault analogue means mainly contains experiment porch 1, frequency converter 2, variable-frequency motor 3, speed reduction unit 4, primary planet pinion gearbox 5, two-stage parallel axis gear speedup case 6, magnetic powder brake 7.
Wherein, experiment porch 1 is used to place frequency converter 2, variable-frequency motor 3, speed reduction unit 4, primary planet pinion gearbox 5, two-stage parallel axis gear speedup case 6, magnetic powder brake 7;
Frequency converter 2; Variable-frequency motor 3 constitutes variable frequency reducer motor with speed reduction unit 4; Output speed through frequency converter 2 control of conversion reducing motors is interrupted in 10r/min～22.5r/min scope or variation continuously, is used to simulate the input speed of wind power generating set vane rotor under incision, cut-out wind speed or the variable parameter operation state of wind power generating set; This output speed not only comprises the rotating speed of vane rotor when wind power generating set runs well, and also can realize the wheel speed simulation under the extreme case simultaneously, the for example stall of wind power generating set;
The input end of primary planet pinion gearbox 5 is connected with the output terminal of speed reduction unit 4; Its output terminal is connected with the input end of two-stage parallel axis gear speedup case 6; Be used to simulate the gear increaser system of wind power generating set " planet two is parallel "; Realize of the conversion of low input speed, simulate the various gears that occur in the speedup kinematic train, bearing etc. simultaneously separately or combined failure to high output speed;
Typical simulation project is:
1. single failure or combined failure simulated experiments such as the wearing and tearing of planetary gearbox planetary gear, sun gear, spot corrosion, crackle, broken teeth;
2. single failure or combined failure simulated experiments such as the wearing and tearing of parallel-axes gears gear of speed increasing box, spot corrosion, crackle, broken teeth;
3. fault simulation experiments such as the wearing and tearing of bearing, spot corrosion, cut;
4. the combined failure simulated experiment of gear and bearing;
Magnetic powder brake 7 is connected with the output terminal of two-stage parallel axis gear speedup case 6; The dynamic load that produces when being used to simulate the wind power generating set operation makes the running status of gear increaser system farthest near the ruuning situation of actual wind power generating set speedup kinematic train.
Through changing the output speed of variable frequency reducer motor; Can study complex inner structure and transfer route under the different rotating speeds easily to the influence of the influence of gear increaser system middle gear, bearing vibration signal time and frequency domain characteristics and frequent speed change, the damage evolution mechanism of speedup system middle gear, bearing under the research variable parameter operation to gear, bearing running status; Can study the characteristics of compound bang path easily through gear, the bearing of changing typical fault to multiple faults characteristic coupling in the influence of fault signature and the planet wheel speedup system; Under the research variable speed, the vibration signal characteristics method for distilling of single failure or coupling fault.
Deciding under the rotating speed running status, epicyclic gearbox sun gear malfunction test is an example below, and experiment flow is following:
Each assembly of the unfaulty conditions on the experiment porch of being linked in sequence, and guarantee the right alignment of each shaft coupling.Energized; Slowly adjust frequency converter; The output speed of control of conversion reducing motor is about 10r/min; The observation experiment device totally reaches the vibration situation and the noise of each parts, guarantees normally operation reposefully of experiment table, prevents the influence that brings to experimental result because of the accidental damage that connects error or certain parts etc.Under the prerequisite of guaranteeing the steady reliability service of experimental provision, the output speed of variable frequency reducer motor is transferred to minimum back deenergization.The disconnection epicyclic gearbox connects with speed reduction unit, parallel-axes gears case, connects experiment table again behind the normal sun gear with typical simulation fault sun gear replacement epicyclic gearbox, guaranteeing to connect under the normal situation, starts power supply once more.When beginning to start, control of conversion reducing motor output speed slowly is increased to about 10r/min, and the vibration and the noise of each parts of observation experiment device, prevents because of connecting the improper damage that experimental provision is brought.Under the prerequisite of confirming the reliable even running of experimental provision; Output speed through the Frequency Converter Control variable frequency reducer motor is 18r/min; Input speed was close when this moment, this rotating speed and wind power generating set were normally moved, and was used for follow-up analysis and research through vibration acceleration sensor and the vibration signal of data acquisition equipment collection and preservation epicyclic gearbox that is installed on the epicyclic gearbox.After finishing experiment, the output speed of variable frequency reducer motor is transferred to minimum back deenergization.
Through a series of fault simulation experiments; This experiment table can be used for studying the fault modeling and damage evolution mechanism of wind power generating set speedup kinematic train; Vibration signal processing and feature extracting method under research variable load, the speed change; Many characteristics couplings under the research cascade situation for the status monitoring of wind power generating set provides theory and technical support, guarantee the safe operation of wind power generating set.
Claims (5)
1. wind power generating set speedup driving unit fault simulated experiment platform; It is characterized in that: this experiment table is made up of experiment porch (1), frequency converter (2), variable-frequency motor (3), speed reduction unit (4), primary planet pinion gearbox (5), two-stage parallel axis gear speedup case (6), magnetic powder brake (7); Variable-frequency motor (3) is connected with speed reduction unit (4); Speed reduction unit (4) is connected with primary planet pinion gearbox (5); Primary planet pinion gearbox (5) is connected with two-stage parallel axis gear speedup case (6); Two-stage parallel axis gear speedup case (6) is connected with magnetic powder brake (7), and variable-frequency motor (3), speed reduction unit (4), primary planet pinion gearbox (5), two-stage parallel axis gear speedup case (6), magnetic powder brake (7) all are installed on the experiment porch (1).
2. the fault simulation device of wind power generating set speedup kinematic train according to claim 1 is characterized in that: the output speed of speed reduction unit (4) is adjustable continuously in 10r/min～22.5r/min scope.
3. the fault simulation device of wind power generating set speedup kinematic train according to claim 1 is characterized in that: primary planet pinion gearbox (5) separates with two-stage parallel axis gear speedup case (6).
4. the fault simulation device of wind power generating set speedup kinematic train according to claim 1 is characterized in that: primary planet pinion case and parallel-axes gears case are step-up gear, and its ratio of gear was followed successively by 1: 5 and 1: 19, and overall ratio is 1: 95.
5. the fault simulation device of wind power generating set speedup kinematic train according to claim 1 is characterized in that: the primary planet pinion gearbox adopts external toothing to fix, planet carrier input, the inner structure of sun gear output.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102636352A (en) * | 2012-04-23 | 2012-08-15 | 华北电力大学 | Simulation experiment system of permanent magnet direct-driven wind turbine generator set |
| CN102759449A (en) * | 2012-07-11 | 2012-10-31 | 三峡大学 | Fault diagnosis device for transmission system of wind turbine generator and simulation method |
| CN103278324A (en) * | 2013-06-06 | 2013-09-04 | 湖南科技大学 | Wind turbine generator system main drive system fault diagnosis stimulation device |
| CN103575534A (en) * | 2013-10-23 | 2014-02-12 | 华东交通大学 | Motor car running part bearing and gear fault simulation platform |
| CN103604604A (en) * | 2013-12-02 | 2014-02-26 | 清华大学 | Device for fault simulation of gear transmission case of wind turbine |
| CN103604601A (en) * | 2013-10-21 | 2014-02-26 | 浙江大学 | Fault diagnosis experiment platform based on wind power gearbox working condition simulation |
| CN104111173A (en) * | 2014-07-24 | 2014-10-22 | 苏州工业园区格比机电有限公司 | Engine irregular rotating speed simulation device |
| CN104502093A (en) * | 2014-12-19 | 2015-04-08 | 湖南科技大学 | Fault simulation experiment device for helicopter tail transmission system |
| CN104502094A (en) * | 2014-12-19 | 2015-04-08 | 湖南科技大学 | Fault simulation device for helicopter main transmission system |
| CN104111173B (en) * | 2014-07-24 | 2016-11-30 | 苏州工业园区格比机电有限公司 | Electromotor irregular rotating speed analog |
| CN108731957A (en) * | 2018-03-27 | 2018-11-02 | 太原重工新能源装备有限公司 | Pitch-controlled system experimental rig and scheme |
| CN109708880A (en) * | 2019-01-28 | 2019-05-03 | 银川威力传动技术股份有限公司 | A kind of yawing speed reducer testing stand static load fatigue test device |
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| CN102636352A (en) * | 2012-04-23 | 2012-08-15 | 华北电力大学 | Simulation experiment system of permanent magnet direct-driven wind turbine generator set |
| CN102636352B (en) * | 2012-04-23 | 2015-01-21 | 华北电力大学 | Simulation experiment system of permanent magnet direct-driven wind turbine generator set |
| CN102759449A (en) * | 2012-07-11 | 2012-10-31 | 三峡大学 | Fault diagnosis device for transmission system of wind turbine generator and simulation method |
| CN103278324A (en) * | 2013-06-06 | 2013-09-04 | 湖南科技大学 | Wind turbine generator system main drive system fault diagnosis stimulation device |
| CN103278324B (en) * | 2013-06-06 | 2015-11-18 | 湖南科技大学 | A kind of wind power generating set main transmission fault diagnosis simulator |
| CN103604601B (en) * | 2013-10-21 | 2015-10-28 | 浙江大学 | Based on the fault diagnostic test platform of wind turbine gearbox Work condition analogue |
| CN103604601A (en) * | 2013-10-21 | 2014-02-26 | 浙江大学 | Fault diagnosis experiment platform based on wind power gearbox working condition simulation |
| CN103575534A (en) * | 2013-10-23 | 2014-02-12 | 华东交通大学 | Motor car running part bearing and gear fault simulation platform |
| CN103604604A (en) * | 2013-12-02 | 2014-02-26 | 清华大学 | Device for fault simulation of gear transmission case of wind turbine |
| CN104111173B (en) * | 2014-07-24 | 2016-11-30 | 苏州工业园区格比机电有限公司 | Electromotor irregular rotating speed analog |
| CN104111173A (en) * | 2014-07-24 | 2014-10-22 | 苏州工业园区格比机电有限公司 | Engine irregular rotating speed simulation device |
| CN104502094A (en) * | 2014-12-19 | 2015-04-08 | 湖南科技大学 | Fault simulation device for helicopter main transmission system |
| CN104502093A (en) * | 2014-12-19 | 2015-04-08 | 湖南科技大学 | Fault simulation experiment device for helicopter tail transmission system |
| CN104502094B (en) * | 2014-12-19 | 2017-10-20 | 湖南科技大学 | A kind of Helicopter Main driving unit fault analogue means |
| CN108731957A (en) * | 2018-03-27 | 2018-11-02 | 太原重工新能源装备有限公司 | Pitch-controlled system experimental rig and scheme |
| CN108731957B (en) * | 2018-03-27 | 2021-04-06 | 太原重工新能源装备有限公司 | Variable pitch system test device and scheme |
| CN109708880A (en) * | 2019-01-28 | 2019-05-03 | 银川威力传动技术股份有限公司 | A kind of yawing speed reducer testing stand static load fatigue test device |
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Application publication date: 20120215 |