CN205139273U - Anti thunderbolt capability test system of horizontal axis wind turbine blades - Google Patents
Anti thunderbolt capability test system of horizontal axis wind turbine blades Download PDFInfo
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- CN205139273U CN205139273U CN201520877902.3U CN201520877902U CN205139273U CN 205139273 U CN205139273 U CN 205139273U CN 201520877902 U CN201520877902 U CN 201520877902U CN 205139273 U CN205139273 U CN 205139273U
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Abstract
The utility model discloses an anti thunderbolt capability test system of horizontal axis wind turbine blades, including setting up at outside artifical thunderstorm weather unit, data acquisition unit, the ground connection protective unit of blade and installing the lightning protection unit who tests at the inside quilt of blade, its aim at obtains the anti thunderbolt ability performance parameter of more accurate blade through adopting low -cost test means to the demand that satisfies blade lightning protection design research and development and detect. These system's characteristics lie in, utilize open -air natural thunderbolt mode, or artifical thunderstorm weather mode, carry out thunderbolt test to the blade, adopt portable instrument, and the blade leads thunder ability and response parameter during the test thunderbolt. Through modifing the thunderstorm weather unit, confirm the influence of different thunderstorm weather devices to blade lightning protection ability. Compare with the indoor thunderbolt test of going on of high -Voltage experimentation, this method has advantages such as equipment is simple, with low costs, the operation of being convenient for.
Description
Technical field
The utility model relates to machinery industry technical field of wind power generation, particularly relates to a kind of anti-lightning Performance Test System of Blades For Horizontal Axis Wind.
Background technology
Wind power generating set, due to the singularity of application conditions, needs the region being arranged on field spaciousness, and develops along with wind-powered electricity generation maximizes, and large scale wind power machine height dimension is also increasing, is very easy to be subject to lightening strikes.The world has the fan blade of 1% ~ 2% to be subject to lightening strikes every year, if the lightning protection capability of Wind turbine and blade is not enough, can cause the destruction of blade and unit, causes very large economy damage.At present, a lot of wind-powered electricity generation enterprises more and more pay attention to the research of shocking preventing technology, have institutions conduct blower fan thunderbolt experiment in the world, but these tests are substantially all carried out in laboratory.Not yet carry out the experiment of thunderbolt naturally of MW class blade is domestic at present, and the lightning test carried out under physical environment, the true anti-lightning performance holding blade is had great importance, carries out the work of this respect, first it is a set of effective to need to set up, and lower-cost measuring technology.The utility model is proposed by realizing this goal.
Utility model content
For the demand and problem, this patent proposes one and carries out anti-lightning Performance Test System under physical environment in the wild, by at thunder and lightning incident field place, build a blade stationary platform, the blade of wanted testing evaluation is placed on stand, by naturally drawing thunder, or adopt and fire a rocket and carry out the method for artificially triggered lightning, blade is struck by lightning.Utilize a set of lightning strike signals acquisition system reception of building by the thunder and lightning signal of lightning-protection system, observed by computing machine and analyze the data gathered.And by adjusting and changing different lightning Protection Design structures, realize the optimization to lightning Protection Design.
(1) technical matters that will solve
Thunderbolt destruction is suffered to cause loss serious in the wild in running for current pneumatic equipment blades, and lightning test in laboratory not only testing cost high, be also difficult to truly to reflect the problems such as thunderbolt impact under physical environment, the utility model proposes one utilizes nature to be struck by lightning or artificially triggered lightning, to the technological approaches that blade anti-lightning performance is assessed.The blade lightning test test that the equipment that can realize is simple, with low cost.
(2) technical scheme
According to an aspect of the present utility model, provide a kind of pneumatic equipment blades anti-lightning Performance Test System,
Comprise the artificially triggered lightning unit, data acquisition unit, the ground protection unit that are arranged on blade exterior and be arranged on the tested lightning protection unit of blade interior, it is characterized in that,
--the tested lightning protection unit of described blade interior is arranged on blade interior, the derivation cable being arranged on blade interior comprising installation arrester over the paddle He be attached thereto, and the end of described derivation cable stretches out from blade root;
--described artificially triggered lightning unit comprises and draws thunder rocket and tinsel, described tinsel one end with draw thunder rocket and be connected, the other end is selectively connected with the arrester on blade;
--described data acquisition unit comprises a resistance bolck, high-voltage isolating front end and a data reception module, described resistance bolck one end is connected with the derivation cable of the tested lightning protection unit of blade interior, the other end is connected with ground protection unit, described high-voltage isolating front end is in parallel with described resistance bolck, described high-voltage isolating front end is connected with described data reception module by optical fiber, and described data reception module is connected with computing machine.
Preferably, described resistance bolck has high-power small resistance value.
Preferably, described high-voltage isolating front end has voltage measure capability.
Preferably, described ground protection unit is made up of earthing cable.
This System Working Principle is: the season taken place frequently at thunderstorm, nature is adopted to draw the mode of thunder or artificially triggered lightning, thunder and lightning is imported to the arrester of blade, the electric current that thunderbolt produces is imported to by the cable of blade lightning-protection system in the resistance with high-power small resistance value, and is incorporated into underground by ground protection system.Now, the current signal of thunderbolt can be converted into ohmically voltage signal, this voltage signal can be measured in the high-voltage isolating front end with voltage measure capability, and complete digitizing conversion, digital signal after conversion, and to be realized the observation of data and analysis by computing machine to data reception module by Optical Fiber Transmission.The observation to lightning strike signals and assessment can be completed thus.
When carrying out test, according to field condition, select to adopt nature to adopt thunder, or adopting to fire a rocket to carry out the method for artificially triggered lightning, is struck by lightning to blade.
Duration of test, data acquisition unit keeps long term monitoring state, when have hit blade time, corresponding lightning strike signals will record in a computer.The power of the thunder and lightning signal that blade bears can be obtained thus, by the monitoring of longer-term, the multiple lightning strike signals that blade bears can be obtained.
After each thunderbolt, whether blade and lightning protection unit wreck, and if destroy, its destructiveness carries out observing and record.When test is passed through with record thunder amplification current, the reliability of lightning protection unit all parts.Such as, in blade tip and leaf, arrester, cable splice or point of fixity are when passing through big current with or without damage and damaged condition, cause the strong high temperature in local and high temperature on the impact etc. of blade with or without arc discharge.
When needing to make assessment to the lightning Protection Design of different designs structure, all parts of replaceable lightning protection unit, in order to investigate its performance to whole prevent thundering unit.Comprise the change of the specification to each parts, the change of metal material, the change of cable distribution, has jointless change etc.And to the blade after often kind of change lightning protection unit, repeating aforesaid operations, the test findings after each change of record, as the foundation of follow-up optimization lightning protection unit.
In aforesaid experiment, may occur that blade is hit in thunderbolt, but not by arrester situation about accepting, now data acquisition unit does not have signal and is recorded.Now, need manual observation and make record, comprising thunder and lightning and whether cause the information such as blade damage.
(3) beneficial effect
The utility model compared with prior art, has following significantly substantive features and remarkable advantage:
(1) with compared with the lightning test technical scheme in laboratory, test macro provided by the utility model, the test facilities of needs are simple, and cost is lower, and more accurate blade anti-lightning ability performance parameter can be obtained, to meet the research and development of blade lightning Protection Design and the demand detected.And due to the environment of blade real work can be selected to test, the feature of being struck by lightning under comparing this environment of actual response.(2), blade anti-lightning Performance Test System provided by the utility model, both can utilize field nature thunderbolt pattern, also artificially triggered lightning pattern can be utilized, carry out lightning test to blade, adopt portable set, during test thunderbolt, blade leads thunder ability and response parameter.Draw thunder unit by amendment, determine that difference draws the impact of thunder unit on blade lightning protection capability.
Accompanying drawing explanation
Fig. 1 is the blade stationary platform schematic diagram implementing anti-lightning Performance Test System of the present utility model.
Fig. 2 is the structural representation of blade anti-lightning Performance Test System of the present utility model.
Fig. 3 is the structural representation of data acquisition unit in blade anti-lightning Performance Test System of the present utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
As shown in Figure 1, 2, at enforcement anti-lightning Performance Test System of the present utility model, need by blade stationary platform 3 as shown in Figure 1, blade stationary platform 3 is arranged on the incident field environment the earth 4 of thunder and lightning, during use, the blade 1 of testing evaluation is placed in stationary platform 3, by blade root bolt 2, blade 1 and stationary platform 3 is fixed, make blade 1 blade tip upwards, uprightly on the stationary platform 3.
As shown in Figure 2, blade anti-lightning Performance Test System of the present utility model, comprises the artificially triggered lightning unit 100, data acquisition unit 200, the ground protection unit 300 that are arranged on blade exterior and is arranged on the tested lightning protection unit 400 of blade interior.The tested lightning protection unit 400 of blade interior is arranged on blade interior, the derivation cable being arranged on blade interior comprising installation arrester over the paddle He be attached thereto, and the end of deriving cable stretches out (not shown) from blade root.Artificially triggered lightning unit 100 comprises and draws thunder rocket and tinsel, tinsel one end with draw thunder rocket and be connected, the other end is selectively connected with the arrester on blade.Ground protection unit 300 is made up of earthing cable, and its conduction requirement requires consistent with the conduction of institute's pilot blade.
As shown in Figure 3, data acquisition unit 200 comprises resistance bolck 201, high-voltage isolating front end 202 and a data reception module 203, and resistance bolck 201 has high-power small resistance value.High-voltage isolating front end 202 has voltage measure capability.Resistance bolck 201 one end is connected with the derivation cable of the tested lightning protection unit 400 of blade interior, the other end is connected with ground protection unit 300, high-voltage isolating front end 202 is in parallel with resistance bolck 201, high-voltage isolating front end 202 is connected with data reception module 203 by optical fiber, and data reception module 203 is connected with computing machine 500.
When implementing anti-lightning Performance Test System of the present utility model, for the MW level Blades For Horizontal Axis Wind of current main-stream, in the season that thunderstorm takes place frequently, nature is adopted to draw the mode of thunder or artificially triggered lightning, thunder and lightning is imported to the arrester of blade, the electric current that thunderbolt produces is imported to by the cable of blade lightning protection unit 400 to be had in the resistance bolck 201 of high-power small resistance value, and is incorporated into underground by ground protection unit 300.Now, the current signal of thunderbolt can be converted into the voltage signal on resistance bolck 201, this voltage signal can be measured in the high-voltage isolating front end 202 with voltage measure capability, and complete digitizing conversion, digital signal after conversion to data reception module 203, and realizes observation to data and analysis by computing machine 500 by Optical Fiber Transmission.The observation to lightning strike signals and assessment can be completed thus.
When carrying out test, according to field condition, select to adopt nature to adopt thunder, or adopting to fire a rocket to carry out the method for artificially triggered lightning, is struck by lightning to blade.
Duration of test, this data acquisition unit 200 keeps long term monitoring state, when have hit blade time, corresponding lightning strike signals will be recorded in computing machine 500.The power of the thunder and lightning signal that blade bears can be obtained thus, by the monitoring of longer-term, the multiple lightning strike signals that blade bears can be obtained.
After each thunderbolt, whether blade and lightning protection unit wreck, and if destroy, its destructiveness carries out observing and record.When test is passed through with record thunder amplification current, the reliability of lightning protection unit all parts.Such as, in blade tip and leaf arrester, cable splice or point of fixity by during big current with or without damage and damaged condition, cause the strong high temperature in local and high temperature on the impact of blade with or without arc discharge, lightning current by time produce the impact of huge electromagnetic force.
When needing to make assessment to the lightning Protection Design of different designs structure, all parts changing lightning protection unit investigates the performance of unit.Comprise the change of the specification to each parts, the change of metal material, the change of cable distribution, have jointless change.And to the blade after often kind of change lightning protection unit, repeating aforesaid operations, the test findings after each change of record, as the foundation of follow-up optimization lightning protection unit.
In aforesaid experiment, also there will be thunderbolt and hit blade, but thunderbolt not by arrester situation about accepting, now data acquisition unit does not have signal and is recorded.Now, need manual observation and make record, comprising thunder and lightning and whether cause the information such as blade damage.
By the enforcement of above step, complete the evaluation work of assessment to this blade lightning-protection system anti-lightning performance and the anti-optimal design of lightning-protection system.
Above-described specific embodiment, further describes the purpose of this utility model, technical scheme and beneficial effect.Be understood that; the foregoing is only specific embodiment of the utility model, be not limited to the utility model, all within spirit of the present utility model and principle; any amendment of making, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a blade anti-lightning Performance Test System, comprises the artificially triggered lightning unit, data acquisition unit, the ground protection unit that are arranged on blade exterior and is arranged on the tested lightning protection unit of blade interior, it is characterized in that,
--the tested lightning protection unit of described blade interior is arranged on blade interior, the derivation cable being arranged on blade interior comprising installation arrester over the paddle He be attached thereto, and the end of described derivation cable stretches out from blade root;
--described artificially triggered lightning unit comprises and draws thunder rocket and tinsel, described tinsel one end with draw thunder rocket and be connected, the other end is selectively connected with the arrester on blade;
--described data acquisition unit comprises a resistance bolck, high-voltage isolating front end and a data reception module, described resistance bolck one end is connected with the derivation cable of the tested lightning protection unit of blade interior, the other end is connected with ground protection unit, described high-voltage isolating front end is in parallel with described resistance bolck, described high-voltage isolating front end is connected with described data reception module by optical fiber, and described data reception module is connected with computing machine.
2. test macro according to claim 1, is characterized in that, described resistance bolck has high-power small resistance value.
3. test macro according to claim 1 and 2, is characterized in that, described high-voltage isolating front end has voltage measure capability.
4. test macro according to claim 1 and 2, is characterized in that, described ground protection unit is made up of earthing cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520877902.3U CN205139273U (en) | 2015-11-06 | 2015-11-06 | Anti thunderbolt capability test system of horizontal axis wind turbine blades |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520877902.3U CN205139273U (en) | 2015-11-06 | 2015-11-06 | Anti thunderbolt capability test system of horizontal axis wind turbine blades |
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| CN205139273U true CN205139273U (en) | 2016-04-06 |
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| CN201520877902.3U Expired - Fee Related CN205139273U (en) | 2015-11-06 | 2015-11-06 | Anti thunderbolt capability test system of horizontal axis wind turbine blades |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370532A (en) * | 2016-10-31 | 2017-02-01 | 中国兵器工业第五九研究所 | Pulling, pressing and bending load coupled testing apparatus for outdoor environments of high-cold climates |
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2015
- 2015-11-06 CN CN201520877902.3U patent/CN205139273U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370532A (en) * | 2016-10-31 | 2017-02-01 | 中国兵器工业第五九研究所 | Pulling, pressing and bending load coupled testing apparatus for outdoor environments of high-cold climates |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20201106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |