CN203978715U - A kind of wind power generating set wheel speed supervisory system - Google Patents
A kind of wind power generating set wheel speed supervisory system Download PDFInfo
- Publication number
- CN203978715U CN203978715U CN201320641696.7U CN201320641696U CN203978715U CN 203978715 U CN203978715 U CN 203978715U CN 201320641696 U CN201320641696 U CN 201320641696U CN 203978715 U CN203978715 U CN 203978715U
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- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000013459 approach Methods 0.000 claims description 52
- 230000001939 inductive effect Effects 0.000 claims description 17
- 239000000523 sample Substances 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000006698 induction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
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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
Abstract
The utility model provides a kind of wind power generating set wheel speed supervisory system, comprise monitor speed module, its output is connecting analog amount measurement module, programmable controller and unit safety chain respectively, the output of described analog measurement module also connects described programmable controller, the output of described monitor speed module is connected with described programmable controller, described monitor speed module comprises pulse detector and speed monitor, described pulse detector is connected with described speed monitor, and the signal detecting is transferred to described speed monitor by described pulse detector.Adopt speed monitor to make the frequency range of its measurement very high; antijamming capability is strong, has effectively avoided the slip ring encoder of available technology adopting to be easily disturbed, and causes often reporting by mistake impeller and overruns and cause compressor emergency shutdown; affect set steady, and encoder and the expensive problem of module of overrunning.
Description
Technical field
The present invention relates to a kind of wind power generating set wheel speed supervisory system, belong to technical field of wind power generation.
Background technique
Wind energy is a kind of clean renewable energy sources, and wind-power electricity generation is the main form of utilizing wind energy present stage.Wheel speed is the most crucial control parameter of wind power generating set, measures accurately wheel speed extremely important to unit safety operation.Wind power generating set can, by becoming oar and controlling generator torque and control rotating speed, make rotating speed be no more than rated speed, but under some particular case, unit still likely cause overrunning.Overrun and can bring crushing disaster to unit, the supervisory device so wind power generating set must be overrun, and take corresponding actions.
Traditional wheel speed supervisory system is made up of slip ring encoder, the module of overrunning, data acquisition module, conjunction cable etc., and the data of data collecting module collected slip ring encoder, pass to programmable logic controller (PLC) to obtain tachometer value.The module of overrunning also can gather slip ring encoder data, and calculates tachometer value, is judged, as exceedes setting value and be judged as and overrun and output signal fan theft-resistant link chain system, exports a road to controller simultaneously, allows the controller monitoring module status of overrunning.
A kind of rotation speed monitoring system of wind-driven generator is disclosed in prior art, comprise slip ring, encoder, high speed brake disc, two approach switchs, control system, high speed brake disc is arranged on the rear end of generator, the center hole of high speed brake disc and generator amature end adopt Spielpassung, and be bolted, slip ring is arranged on the center tubular axis of generator rear end and generator, connect by flange, the afterbody of slip ring is connected with encoder by flat key, and control system connects respectively at slip ring, two approach switch electrical signal of encoder.But because slip ring encoder is easily disturbed, cause often reporting by mistake impeller and overrun and cause compressor emergency shutdown, affect set steady, and encoder and the module of overrunning expensive, carrying cost is high; In addition, the pulse frequency that while surveying the rotating speed of high speed shaft with approach switch, approach switch produces is very high, and the highest measurement frequency of rotational speed measuring device has just been proposed to higher requirement, the rotational speed measuring device that highest measurement frequency is higher, and price is just higher.
Summary of the invention
For this reason, technical problem to be solved by this invention is that slip ring encoder is easily disturbed, and causes often reporting by mistake impeller and overruns and cause compressor emergency shutdown, affects set steady, and encoder and the module of overrunning expensive; The pulse frequency that while surveying the rotating speed of high speed shaft with approach switch, approach switch produces is very high, and the requirement of the highest measurement frequency to rotational speed measuring device is very high, and the price of the rotational speed measuring device that highest measurement frequency is higher is just higher, and cost is higher, poor stability.Thereby a kind of wind power generating set wheel speed supervisory system is proposed.
For solving the problems of the technologies described above, technological scheme of the present invention is as follows:
A kind of wind power generating set wheel speed supervisory system, comprise monitor speed module, its output is connecting analog amount measurement module, programmable controller and unit safety chain respectively, the output of described analog measurement module also connects described programmable controller, described monitor speed module comprises pulse detector and speed monitor, described pulse detector is connected with described speed monitor, and the signal detecting is transferred to described speed monitor by described pulse detector.
Described pulse detector is approach switch.
Described approach switch is fixed on approach switch support, and described approach switch support is installed on base plate.
Described approach switch support is a bending connected element, and one end is connected with described base plate, and the other end is for fixing approach switch.
Described approach switch comprises inductive probe and testing circuit.
Described inductive probe is aimed at the bolt for fixing wind wheel locking plate and wheel hub.
The inductive probe of described approach switch is apart from described bolt 5-10mm.
The output terminal of described speed monitor is connected with described unit safety chain by relay.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) the invention provides a kind of wind power generating set wheel speed supervisory system, comprise monitor speed module, its output is connecting analog amount measurement module, programmable controller and unit safety chain respectively, the output of described analog measurement module also connects described programmable controller, described monitor speed module comprises pulse detector and speed monitor, described pulse detector is connected with described speed monitor, and the signal detecting is transferred to described speed monitor by described pulse detector.Adopt speed monitor to make the frequency range of its measurement very high; antijamming capability is strong; effectively avoid the slip ring encoder of available technology adopting to be easily disturbed; causing often reporting by mistake impeller overruns and causes compressor emergency shutdown; affect set steady, and the encoder of this system and the expensive problem of module of overrunning.
(2) the invention provides a kind of wind power generating set wheel speed supervisory system, described pulse detector is arranged near locking plate, only measure the rotating speed of lower velocity shaft, the pulse frequency that while having avoided surveying the rotating speed of high speed shaft with approach switch, approach switch produces is very high, the requirement of the highest measurement frequency to speed monitor is very high, and the price of the Speed Controller that highest measurement frequency is higher is just higher, and cost is higher, the problem of poor stability, has improved the accuracy of wheel speed supervisory system.
(3) the invention provides a kind of wind power generating set wheel speed supervisory system, described approach switch support is a bending connected element, one end is connected with described base plate, the other end is for fixing approach switch, approach switch is arranged near locking plate, be conducive to measure the rotating speed of impeller, simple in structure, steadiness is good.
(4) the invention provides a kind of wind power generating set wheel speed supervisory system, described inductive probe is aimed at the bolt for fixing wind wheel locking plate and wheel hub, drive described bolt to rotate by impeller, in the time that described bolt passes through the induction region of described inductive probe, the testing circuit of described approach switch just can detect pulse signal, approach switch functional, cost is lower.
Brief description of the drawings
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart of a kind of wind power generating set wheel speed supervisory system of one embodiment of the invention;
Fig. 2 is the pulse detector scheme of installation of a kind of wind power generating set wheel speed supervisory system of one embodiment of the invention.
In figure, reference character is expressed as: 1-wind wheel locking plate, 2-bolt, 3-approach switch, 4-approach switch support.
Embodiment
embodiment one
The present embodiment provides a kind of wind power generating set wheel speed supervisory system, its system architecture diagram as shown in Figure 1, comprise monitor speed module, its output is connecting analog amount measurement module, unit safety chain and programmable controller respectively, the output of described analog measurement module also connects described programmable controller, described monitor speed module comprises pulse detector and speed monitor, described pulse detector is connected with described speed monitor, and the signal detecting is transferred to described speed monitor by described pulse detector.In the present embodiment, described speed monitor is the DC2005 of Yi Fumen, its frequency range that can measure is high especially, reach as high as 1000Hz, its output port variation, the pulse signal that described speed monitor detects described pulse detector Fen San road output after treatment, both analogue signal that can output speed, can export again two-way digital quantity signal, this two-way digital quantity signal is leaded up to relay and is transferred to described unit safety chain, and a road is transferred to described programmable controller.The signal that the rotating speed analog amount of output is 4-20mA; be transferred to programmable controller by described analog measurement module KL3454; described programmable controller calculates the signal by described analog measurement module KL3454 transmission; and compare with the tach signal that high speed shaft measures; when the difference of the two exceedes predefined value, programmable controller output stopping signal.The pulse signal that described speed monitor DC2005 detects pulse detector is converted into speed; if while exceeding default speed; by output one road 24V voltage signal to unit safety chain; unit safety chain is disconnected; unit emergency shutdown; an other road signal is transferred to programmable controller, sends out halt command, unit emergency shutdown by programmable controller to unit.
The present embodiment provides a kind of wind power generating set wheel speed supervisory system, comprise monitor speed module, its output is connecting analog amount measurement module, programmable controller and unit safety chain respectively, the output of described analog measurement module also connects described programmable controller, described monitor speed module comprises pulse detector and speed monitor, described pulse detector is connected with described speed monitor, and the signal detecting is transferred to described speed monitor by described pulse detector.Adopt speed monitor to make the frequency range of its measurement very high; antijamming capability is strong, has effectively avoided the slip ring encoder of available technology adopting to be easily disturbed, and causes often reporting by mistake impeller and overruns and cause compressor emergency shutdown; affect set steady, and encoder and the expensive problem of module of overrunning.
embodiment two
The present embodiment is on embodiment one basis, and described pulse detector is selected approach switch 3.Wind power generating set is installed a wind wheel locking plate 1 on spindle flange, and as shown in Figure 2, in the present embodiment, wind wheel locking plate 1 inner side has
individual hole, and evenly arrange with circle, wind wheel locking plate 1 is connected with wheel hub by bolt 2, and described approach switch 3 is fixed on approach switch support 4, and described approach switch support 4 is installed on base plate.Described approach switch support 4 is a bending connected element, and one end is connected with described base plate, and the other end, for fixing approach switch 3, is arranged near locking plate 1 described approach switch 3, is conducive to measure the rotating speed of impeller, and simple in structure, steadiness is good.
Approach switch 3 comprises inductive probe and testing circuit.The inductive probe of described approach switch 3 is aimed at the bolt 2 for fixing wind wheel locking plate and wheel hub.Described inductive probe is aimed at the bolt 2 for fixing wind wheel locking plate 1 and wheel hub, drive described bolt 2 to rotate by impeller, in the time that described bolt 2 passes through the induction region of described inductive probe, the testing circuit of described approach switch 3 just can detect pulse signal, approach switch 3 functional, cost is lower.The inductive probe of described approach switch 3 is 5-10mm apart from the distance of described bolt 2.In the present embodiment, select can induction range the approach switch that is 15mm, being arranged on apart from the distance of described bolt 2 is 7mm place, can obtain preferably effect.
In other embodiments, described approach switch is arranged on the different distance places such as 6mm, 7.5mm, 9mm, 10mm, selects the setting position of described approach switch according to the size of described bolt.
In the time that impeller rotates with the wind, drive wind wheel locking plate 1 to rotate, the described bolt 2 for fixing wind wheel locking plate and wheel hub also rotates thereupon, when described bolt 2 enters into the inductive probe induction region of described approach switch 3, described inductive probe senses metal object, described testing circuit changes into a pulse signal and is transferred to described speed monitor, and in the time that described bolt 2 is aimed at described approach switch 3 inductive probe, signal is 1; When described bolt 2 is not aimed at the inductive head of described approach switch 3, signal is 0.In the time of wheel rotation, wind wheel locking plate 1 also rotates thereupon, and approach switch 3 can detect 0101 ... variable signal, described speed monitor is processed the pulse signal detecting.
The present embodiment provides a kind of wind power generating set wheel speed supervisory system, described pulse detector is arranged near locking plate, only measure the rotating speed of lower velocity shaft, the pulse frequency that while having avoided surveying the rotating speed of high speed shaft with approach switch, approach switch produces is very high, the requirement of the highest measurement frequency to Speed Controller is very high, and the price of the Speed Controller that highest measurement frequency is higher is just higher, and cost is higher, the problem of poor stability, has improved the accuracy of wheel speed supervisory system.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all mode of executions.And the apparent variation of being extended out thus or variation are still among the protection domain in the invention.
Claims (5)
1. a wind power generating set wheel speed supervisory system, comprise monitor speed module, its output is connecting analog amount measurement module, programmable controller and unit safety chain respectively, and the output of described analog measurement module also connects described programmable controller, it is characterized in that
Described monitor speed module comprises pulse detector and speed monitor, and described pulse detector is connected with described speed monitor, and the signal detecting is transferred to described speed monitor by described pulse detector, and described speed monitor is Yi Fumen DC2005;
Described pulse detector is approach switch, and described approach switch comprises inductive probe and testing circuit, and described inductive probe is aimed at the bolt for fixing wind wheel locking plate and wheel hub.
2. wind power generating set wheel speed supervisory system according to claim 1, is characterized in that, described approach switch is fixed on approach switch support, and described approach switch support is installed on base plate.
3. wind power generating set wheel speed supervisory system according to claim 2, is characterized in that, described approach switch support is a bending connected element, and one end is connected with described base plate, and the other end is for fixing approach switch.
4. wind power generating set wheel speed supervisory system according to claim 1, is characterized in that, the inductive probe of described approach switch is apart from described bolt 5-10mm.
5. wind power generating set wheel speed supervisory system according to claim 1, is characterized in that, the output terminal of described speed monitor is connected with described unit safety chain by relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641696.7U CN203978715U (en) | 2013-10-17 | 2013-10-17 | A kind of wind power generating set wheel speed supervisory system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641696.7U CN203978715U (en) | 2013-10-17 | 2013-10-17 | A kind of wind power generating set wheel speed supervisory system |
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| CN203978715U true CN203978715U (en) | 2014-12-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286154A (en) * | 2016-09-28 | 2017-01-04 | 北京天诚同创电气有限公司 | Wind turbines rotor azimuthal measurement system |
| CN107013421A (en) * | 2017-06-12 | 2017-08-04 | 国电联合动力技术有限公司 | A kind of wind power generating set wheel speed measuring method and system |
| CN108019314A (en) * | 2017-12-29 | 2018-05-11 | 华润电力风能（阳江）有限公司 | A kind of impeller system |
| CN108708833A (en) * | 2018-05-16 | 2018-10-26 | 浙江运达风电股份有限公司 | A kind of wind power generating set blade blade root bolt fracture method for real-time monitoring and system |
| CN110927400A (en) * | 2019-11-14 | 2020-03-27 | 鲁能新能源(集团)有限公司河北分公司 | Impeller speed measuring device and method based on inductive proximity switch |
| CN113653597A (en) * | 2021-08-03 | 2021-11-16 | 华仪风能有限公司 | Wind generating set overspeed automatic protection circuit |
-
2013
- 2013-10-17 CN CN201320641696.7U patent/CN203978715U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286154A (en) * | 2016-09-28 | 2017-01-04 | 北京天诚同创电气有限公司 | Wind turbines rotor azimuthal measurement system |
| CN107013421A (en) * | 2017-06-12 | 2017-08-04 | 国电联合动力技术有限公司 | A kind of wind power generating set wheel speed measuring method and system |
| CN107013421B (en) * | 2017-06-12 | 2023-11-14 | 国电联合动力技术有限公司 | Method and system for measuring rotation speed of impeller of wind generating set |
| CN108019314A (en) * | 2017-12-29 | 2018-05-11 | 华润电力风能（阳江）有限公司 | A kind of impeller system |
| CN108708833A (en) * | 2018-05-16 | 2018-10-26 | 浙江运达风电股份有限公司 | A kind of wind power generating set blade blade root bolt fracture method for real-time monitoring and system |
| CN108708833B (en) * | 2018-05-16 | 2019-12-24 | 浙江运达风电股份有限公司 | Real-time monitoring method and system for blade root bolt fracture of wind generating set blade |
| CN110927400A (en) * | 2019-11-14 | 2020-03-27 | 鲁能新能源(集团)有限公司河北分公司 | Impeller speed measuring device and method based on inductive proximity switch |
| CN113653597A (en) * | 2021-08-03 | 2021-11-16 | 华仪风能有限公司 | Wind generating set overspeed automatic protection circuit |
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