CN103696911B - A kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method - Google Patents
A kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method Download PDFInfo
- Publication number
- CN103696911B CN103696911B CN201310733442.2A CN201310733442A CN103696911B CN 103696911 B CN103696911 B CN 103696911B CN 201310733442 A CN201310733442 A CN 201310733442A CN 103696911 B CN103696911 B CN 103696911B
- Authority
- CN
- China
- Prior art keywords
- end flange
- wind power
- power generating
- generating set
- friction plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Embodiments provide a kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method, belong to lighting protection device technical field, to guarantee the normal operation of wind power generating set.Described wind power generating set lighting protection device, comprises friction plate, and described friction plate one end is connected with into end flange, and the below of the described friction plate the other end is provided with the conductive plate done relative motion with described friction plate, is provided with out end flange in the below of described conductive plate; Described enter end flange be made up of insulating material, and be arranged on directly or indirectly on bearing and make described friction plate and described bearing insulation; Described go out end flange be made up of conductive material, and be indirectly arranged on described bearing and make described conductive plate and described bearing insulation.The present invention can be used for the lightning protection in wind power generating set.
Description
Technical field
The present invention relates to lighting protection device technical field, particularly relate to a kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method.
Background technique
Along with the increase of wind power generating set single-machine capacity, the increase of rotor diameter, the height that wind power generating set is liftoff is also in continuous increase.Up to the present, the height of novel wind generator group has met or exceeded 160 meters.Because wind power generating set is arranged on the multiple high altitude localities of thunder and lightning or coastal area usually, belong to the object of special projection in these regional wind power generating set and be easily struck by lightning.Be struck by lightning in order to avoid wind-force Wind turbines and damaged, being needed for wind power generating set arranges lighting protection device.
In existing lighting protection device, patent application CN102646168 and CN202811232 each provides the lighting protection device for permanent magnet direct-driving aerogenerator group main bearing and pitch variable bearings, in these two kinds of devices, respectively by being provided with ring track and the lightning protection brush that can slide on ring track to the normal operation of the main bearing and pitch variable bearings that ensure generator on the dead axle of generator and in blade.But the structure of these two kinds of lighting protection devices is comparatively complicated, it is comparatively large to take up room, and implements also comparatively loaded down with trivial details.
So, need now the lighting protection device providing a kind of structure to be simply applicable to each large bearing of wind power generating set badly.
Summary of the invention
Embodiments provide a kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method, to guarantee the normal operation of wind power generating set.
For achieving the above object, embodiments of the invention adopt following technological scheme:
A kind of wind power generating set lighting protection device, comprise friction plate, described friction plate one end is connected with into end flange, and the below of the described friction plate the other end is provided with the conductive plate done relative motion with described friction plate, is provided with out end flange in the below of described conductive plate;
Described enter end flange be made up of insulating material, and be arranged on directly or indirectly on bearing and make described friction plate and described bearing insulation; Described go out end flange be made up of conductive material, and be indirectly arranged on described bearing and make described conductive plate and described bearing insulation.
Further, described friction plate, described conductive plate and described in go out end flange and arrange according to same axis from top to bottom, described friction plate be located at described conductive plate side, described in go out another opposite side that end flange is located at described conductive plate, and in the described profile of tooth projection going out end flange is provided with around described conductive plate, described profile of tooth projection relative with described friction plate and and between described friction plate, there is predetermined gap;
When lightning current exceeds the bearing load of described conductive plate, lightning current puncture the electric discharge of described predetermined gap by described profile of tooth projection and release to described go out in end flange, finally release to greatly.
Optionally, described profile of tooth projection has conductive tip.
Wherein, the predetermined gap between the conductive tip of described profile of tooth projection and described friction plate is 1-3mm.
In addition, described in enter end flange and be arranged in the inner ring of bearing or the one of outer ring directly or indirectly, described in go out end flange and be indirectly arranged in the outer ring of bearing or the another one of inner ring;
When described enter end flange rotate time, described in go out end flange keep static; Or
When described go out end flange rotate time, described in enter end flange keep static.
Optionally, described device also comprise be arranged at described in go out Compress Spring in end flange Vertical direction, go out end flange described in one end of described Compress Spring is connected with, the other end of described Compress Spring is connected with spring seat board.
Wherein, described friction plate, described conductive plate and described in go out end flange and be successively set on the same axis, described Compress Spring is enclosed within the outside of described axle.
Optionally, described spring seat board to be arranged on described bearing or on the component that are connected with described bearing, the material of described spring seat board is insulating material directly or indirectly.
A kind of wind power generating set, comprises the wind power generating set lighting protection device that above-mentioned arbitrary technological scheme provides.
A lightening arresting method for wind power generating set, described wind power generating set has the wind power generating set lighting protection device that above-mentioned arbitrary technological scheme provides, and the lightening arresting method of described wind power generating set comprises:
Utilize the blade arrester be installed on fan blade to receive lightning current, and by lead-in cable line, lightning current is introduced on described friction plate;
By described friction plate with the relative rotation of described conductive plate and then lightning current is introduced on described conductive plate, release to greatly finally by going out end flange described in being connected with described conductive plate.
Further, when the intensity of lightning current that described blade arrester receives exceeds the bearing load of described conductive plate, while being introduced into described conductive plate on the relative rotation of described conductive plate by lightning current by described friction plate, described method also comprises:
By described go out the predetermined gap that punctures between described profile of tooth projection and described friction plate of the profile of tooth projection that is provided with of end flange discharge, and go out in end flange by lightning current and then described in being introduced into, finally release to greatly.
Embodiments provide a kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method, compared with existing wind power generating set lighting protection device, the lighting protection device that the embodiment of the present invention provides only need by be connected with friction plate enter end flange and the end flange that goes out that is connected with conductive plate be installed on bearing, relatively rotarily driving friction plate and just lightning current can be caused out in end flange with the relative spin friction of conductive plate and effectively release by the inside and outside circle of bearing.This apparatus structure is simple, can be applied in comparatively easily in each large bearing of wind power generating set and protect it, guarantee the normal operation of wind power generating set.
Accompanying drawing explanation
A kind of structural representation of the wind power generating set lighting protection device that Fig. 1 provides for the embodiment of the present invention.
The another kind of structural representation of the wind power generating set lighting protection device that Fig. 2 provides for the embodiment of the present invention.
The schematic diagram of the wind power generating set lightening arresting method that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below in conjunction with accompanying drawing, wind power generating set lighting protection device, wind power generating set and the lightening arresting method that the embodiment of the present invention provides is described in detail.
A kind of structural representation of the wind power generating set lighting protection device that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, embodiments provide a kind of wind power generating set lighting protection device, comprise friction plate 3, friction plate 3 one end is connected with into end flange 1, the below of friction plate 3 the other end is provided with the conductive plate 5 done relative motion with friction plate 3, is provided with out end flange 7 in the below of conductive plate 5; Enter end flange 1 to be made up of insulating material, and be arranged on directly or indirectly on bearing and make friction plate 3 and bearing insulation; Go out end flange 7 to be made up of conductive material, and be indirectly arranged on bearing and make conductive plate 5 and bearing insulation.
On the basis of said structure, when meeting thunderbolt, lightning current is introduced on friction plate 3, and by the relative rotation of friction plate 3 and conductive plate 5 and then be introduced on conductive plate 5, releases to greatly finally by the end flange 7 that goes out be connected with conductive plate 5.
Embodiments provide a kind of wind power generating set lighting protection device, compared with existing wind power generating set lighting protection device, the end flange 7 that goes out entering end flange 1 and be connected with conductive plate 5 being connected with friction plate 3 only need be installed on bearing by the lighting protection device that the embodiment of the present invention provides, relatively rotarily driving friction plate 3 and just lightning current can be caused out in end flange 7 with the relative spin friction of conductive plate 5 and effectively release by the inside and outside circle of bearing.This apparatus structure is simple, can be applied in comparatively easily in each large bearing of wind power generating set and protect it, guarantee the normal operation of wind power generating set.
Friction plate 3, conductive plate 5 and go out end flange 7 and arrange according to same axis from top to bottom in above-described embodiment, friction plate 3 be located at conductive plate 5 side, go out another opposite side that end flange 7 is located at conductive plate 5, and going out the profile of tooth projection 6 end flange 7 is provided with around conductive plate 5, profile of tooth projection 6 relative with friction plate 3 and and between friction plate 3, there is predetermined gap; When lightning current exceeds the bearing load of conductive plate 5, lightning current punctures the electric discharge of predetermined gap (not shown) by profile of tooth projection 6 and releases to going out in end flange 7, releases to greatly eventually through going out the extraction cable that end flange 7 connects.
By friction plate 3, conductive plate 5 and go out end flange 7 and arrange such dock structure according to same axis from top to bottom, mainly consider two aspects, (1) make the profile of tooth projection 6 going out setting in end flange 7 relative completely with friction plate 3, can guarantee that the predetermined gap that lightning current just punctures between friction plate 3 by profile of tooth projection 6 discharges when lightning current exceeds the bearing load of conductive plate 5 like this; (2) there is larger area of contact when conductive plate 5 can be made to carry out relative spin friction with friction plate 3, can contact more fully.
Wherein, it is comparatively thinner that the thickness of conductive plate 5 can be arranged, the structure of the conductive mechanism that can make friction plate 3, conductive plate 5 like this and go out end flange 7 composition is compacter, conductive plate 5 can also be embedded in out in end flange 7, conductive plate 5 can be made like this to be fixed on out in end flange 7 better, conductive plate 5 so just can be avoided well to be moved in the process of friction.It is comparatively longer that friction plate 3 also can be arranged, like this at friction plate 3 when rubbing with conductive plate 5, can ensure that the friction material operable time on friction plate 3 is more longer, thus reduce the replacement frequency of friction plate 3.
In the present embodiment, profile of tooth projection 6 has conductive tip.The effect of conductive tip is that if lightning current exceeds the bearing load of conductive plate 5, the predetermined gap that conductive tip can puncture between friction plate 3 discharges to assist conductive plate 5 in order to conductive plate 5 is when conducting lightning current.In order to effectively ensure that conductive tip can puncture the predetermined gap between friction plate 3, the predetermined gap between the conductive tip of profile of tooth projection 6 and friction plate 3 is 1-3mm.
In the present embodiment, enter end flange 1 and go out on inner ring or outer ring that end flange 7 needs to be connected in bearing, its concrete Placement is: enter end flange 1 and be arranged on directly or indirectly in the inner ring of bearing or the one of outer ring, goes out end flange 7 and is indirectly arranged in the outer ring of bearing or the another one of inner ring; When entering end flange 1 and rotating, go out end flange 7 and keep static; Maybe when going out end flange 7 and rotating, enter end flange 1 and keep static.
It should be noted that, " go out end " and " entering end " does not limit the use occasion of flange, that is, goes out end flange 7 and enters end flange 1 and can exchange use, namely flange can use as entering end flange 1 " to go out end ", and " entering end " flange also can use as going out end flange 7.
By above-mentioned Placement just can drive with enter friction plate 3 that end flange 1 is connected and with go out the conductive plate 5 that end flange 7 is connected and do relative rotary motion, namely when friction plate 3 rotates, conductive plate 5 keeps static; Or when conductive plate 5 rotates, friction plate 3 keeps static, thus make friction plate 3 and conductive plate 5 can realize dynamically conducting lightning current.Wherein, enter end flange 1 for insulating material, can be connected with bearing directly or indirectly, to make friction plate 3 and bearing insulation; Go out end flange 7 for conductive material, indirectly need be connected with bearing via the component of an insulating material, to make conductive plate 5 and bearing insulation; Further, friction plate 3 and the component entering end flange 1 and insulating material with go out end flange 7 and be connected by connection part (not shown).Connection part can connect for bolt and nut, also can be riveted joint, pinned connection etc.
In another embodiment of the invention, as shown in Figure 2, (in Fig. 2 the label order of each component and representative component all with in Fig. 1 representated by consistent, just before label, all adding 2) device that provides of the present embodiment also comprises the Compress Spring 28 be arranged at out in end flange 27 Vertical direction, one end of Compress Spring 28 is connected with out end flange 27, and the other end of Compress Spring 28 is connected with spring seat board 29.Constant in order to ensure the impacting force of Compress Spring 28, close contact and the Compress Spring 28 that can realize friction plate 23 and conductive plate 25 are avoided offseting when compressing, friction plate 23, conductive plate 25 and go out end flange 27 and be successively set on the same axis, and Compress Spring 28 is enclosed within the outside of axle.So just can guarantee friction plate 23, conductive plate 25 well and go out end flange 27 to realize close contact in vertical direction.Further, spring seat board 29 to be arranged on bearing or on the component that are connected with bearing, the material of spring seat board 29 is insulating material directly or indirectly.Spring seat board 29 insulate, and can guarantee spring seat board 29 non-conducting electricity when being directly connected with bearing.
It should be noted that, this lighting protection device shown in Fig. 2 can be applicable to the main bearing in wind power generating set or subtract/main bearing of speed increaser in, because these main bearings above-mentioned need frequent rotation in wind-power electricity generation, and it is higher to the requirement of the compression effectiveness of parts each in lighting protection device, so the close contact of each parts in lighting protection device can be ensured in a device preferably by arranging Compress Spring 28, ensure, when meeting with thunderbolt, effectively to release to lightning current in above-mentioned main bearing.Lighting protection device shown in Fig. 1 is the simple model of the lighting protection device shown in Fig. 2, the axle namely omitting Compress Spring 28, spring seat board 29 and run through in this lighting protection device.The lighting protection device of such modification being can be applicable to the driftage bearing of wind power generating set, pitch variable bearings and in power generation process, do not need often to rotate and compress effect does not need to go in too high bearing, thus can ensure that each bearing can also save the structure space of wind power generating set while carrying out effectively electric discharge.
Accordingly, the invention provides a kind of wind power generating set, comprise the wind power generating set lighting protection device that the various embodiments described above of the present invention provide, because the lighting protection device structure of installing in wind power generating set is simple, only need the end flange 7 that goes out entering end flange 1 and be connected with conductive plate 5 being connected with friction plate 3 be installed on bearing, relatively rotarily driving friction plate 3 and just lightning current can be caused out in end flange 7 with the relative spin friction of conductive plate 5 and effectively release by the inside and outside circle of bearing.This device is used in wind power generating set, each large bearing in wind power generating set can be made effectively to release to lightning current when meeting with thunderbolt, thus guarantee the normal operation of wind power generating set.
Accordingly, the invention provides a kind of lightening arresting method of wind power generating set, this wind power generating set has the wind power generating set lighting protection device that the various embodiments described above of the present invention provide, and as shown in Figure 3, the lightening arresting method of this wind power generating set comprises:
Step 31, utilizes the blade arrester be installed on fan blade to receive lightning current, and is introduced on friction plate 3 by lead-in cable line by lightning current;
Step 32, by friction plate 3 with the relative rotation of conductive plate 5 and then be introduced into by lightning current on conductive plate 5, releases to greatly finally by the end flange 7 that goes out be connected with conductive plate 5.
Embodiments provide a kind of lightening arresting method of wind power generating set, this lightening arresting method realizes by the wind power generating set lighting protection device installed in this wind power generating set, because the end flange 1 that enters being connected with friction plate 3 only need be installed on bearing with the end flange 7 that goes out being connected with conductive plate 5 by this lighting protection device, by in bearing, relatively the rotarily driving friction plate 3 and just lightning current can be caused out in end flange 7 with the relative spin friction of conductive plate 5 and effectively release of outer ring, therefore this apparatus structure is simple, so utilize this device to each macro-axis accept the lightning current received release time, the lightening arresting method undertaken by this device is simple to operate, practical.
In the present embodiment, when the intensity of lightning current that blade arrester receives exceeds the bearing load of conductive plate 5, in step 32, while being introduced on conductive plate 5 with the relative rotation of conductive plate 5 by lightning current by friction plate 3, the method also comprises:
Step 33, the predetermined gap that the profile of tooth projection 6 be provided with by going out end flange 7 punctures between profile of tooth projection 6 and friction plate 3 discharges, and by lightning current and then be introduced into out in end flange 7, finally releases to greatly.
Size due to conductive plate 5 carries out determining according to the intensity of lightning current, when prominent chance lightning current is excessive and when exceeding the bearing load of conductive plate 5, the predetermined gap punctured between profile of tooth projection 6 and friction plate 3 by profile of tooth projection 6 discharges to assist conductive plate 5, thus guarantees the normal operation of each large bearing.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not 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 exhaustive without the need to also giving all mode of executions.And thus the apparent change of extending out or variation be still in the protection domain of the invention.
Claims (11)
1. a wind power generating set lighting protection device, it is characterized in that, comprise friction plate, described friction plate one end is connected with into end flange, the below of the described friction plate the other end is provided with the conductive plate done relative motion with described friction plate, is provided with out end flange in the below of described conductive plate;
Described enter end flange be made up of insulating material, and be arranged on directly or indirectly on bearing and make described friction plate and described bearing insulation; Described go out end flange be made up of conductive material, and be indirectly arranged on described bearing and make described conductive plate and described bearing insulation.
2. wind power generating set lighting protection device according to claim 1, it is characterized in that, described friction plate, described conductive plate and described in go out end flange and arrange according to same axis from top to bottom, described friction plate be located at described conductive plate side, described in go out another opposite side that end flange is located at described conductive plate, and in the described profile of tooth projection going out end flange is provided with around described conductive plate, described profile of tooth projection relative with described friction plate and and between described friction plate, there is predetermined gap;
When lightning current exceeds the bearing load of described conductive plate, lightning current puncture the electric discharge of described predetermined gap by described profile of tooth projection and release to described go out in end flange, finally release to greatly.
3. wind power generating set lighting protection device according to claim 2, is characterized in that, described profile of tooth projection has conductive tip.
4. wind power generating set lighting protection device according to claim 3, is characterized in that, the predetermined gap between the conductive tip of described profile of tooth projection and described friction plate is 1-3mm.
5. wind power generating set lighting protection device according to claim 1, it is characterized in that, described enter end flange be arranged in the inner ring of bearing or the one of outer ring directly or indirectly, described in go out end flange and be indirectly arranged in the outer ring of bearing or the another one of inner ring;
When described enter end flange rotate time, described in go out end flange keep static; Or
When described go out end flange rotate time, described in enter end flange keep static.
6. wind power generating set lighting protection device according to claim 2, it is characterized in that, described device also comprise be arranged at described in go out Compress Spring in end flange Vertical direction, go out end flange described in one end of described Compress Spring is connected with, the other end of described Compress Spring is connected with spring seat board.
7. wind power generating set lighting protection device according to claim 6, is characterized in that, described friction plate, described conductive plate and described in go out end flange and be successively set on the same axis, described Compress Spring is enclosed within the outside of described axle.
8. wind power generating set lighting protection device according to claim 6, is characterized in that, described spring seat board is arranged on described bearing directly or indirectly or on the component that are connected with described bearing, the material of described spring seat board is insulating material.
9. a wind power generating set, is characterized in that, comprises the wind power generating set lighting protection device as described in any one of claim 1-8.
10. a lightening arresting method for wind power generating set, is characterized in that, described wind power generating set has the wind power generating set lighting protection device as described in any one of claim 1-8, and the lightening arresting method of described wind power generating set comprises:
Utilize the blade arrester be installed on fan blade to receive lightning current, and by lead-in cable line, lightning current is introduced on described friction plate;
By described friction plate with the relative rotation of described conductive plate and then lightning current is introduced on described conductive plate, release to greatly finally by going out end flange described in being connected with described conductive plate.
The lightening arresting method of 11. wind power generating set according to claim 10, it is characterized in that, when the intensity of lightning current that described blade arrester receives exceeds the bearing load of described conductive plate, while being introduced into described conductive plate on the relative rotation of described conductive plate by lightning current by described friction plate, described method also comprises:
By described go out the predetermined gap that punctures between described profile of tooth projection and described friction plate of the profile of tooth projection that is provided with of end flange discharge, and go out in end flange by lightning current and then described in being introduced into, finally release to greatly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733442.2A CN103696911B (en) | 2013-12-26 | 2013-12-26 | A kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310733442.2A CN103696911B (en) | 2013-12-26 | 2013-12-26 | A kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103696911A CN103696911A (en) | 2014-04-02 |
| CN103696911B true CN103696911B (en) | 2016-03-16 |
Family
ID=50358553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310733442.2A Active CN103696911B (en) | 2013-12-26 | 2013-12-26 | A kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103696911B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191338B (en) * | 2017-07-24 | 2023-06-13 | 广州特种承压设备检测研究院 | Lightning stroke fault monitoring system and lightning protection system of wind turbine generator |
| EP3891388A1 (en) * | 2018-12-05 | 2021-10-13 | LM Wind Power A/S | Attachment to a sandwich structure element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662743A (en) * | 2002-06-19 | 2005-08-31 | Neg麦康公司 | Lightning protection means for a wind turbine |
| CN203640932U (en) * | 2013-12-26 | 2014-06-11 | 北京金风科创风电设备有限公司 | Wind generating set lightning protection device and wind generating set |
-
2013
- 2013-12-26 CN CN201310733442.2A patent/CN103696911B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662743A (en) * | 2002-06-19 | 2005-08-31 | Neg麦康公司 | Lightning protection means for a wind turbine |
| CN203640932U (en) * | 2013-12-26 | 2014-06-11 | 北京金风科创风电设备有限公司 | Wind generating set lightning protection device and wind generating set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103696911A (en) | 2014-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2009111355A3 (en) | Distributed wind turbine electric generation system | |
| CN105738806A (en) | Wind driven generator set fault diagnosis system and method | |
| CN107711821A (en) | A kind of intelligent scarer of electric power network with reciprocating motion function | |
| CN103696911B (en) | A kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method | |
| CN204131109U (en) | A kind of lightning-protection device for fan | |
| CN202132183U (en) | Tapered wind gathering type vertical-shaft wind-solar complementary wind driven generator | |
| CN203640932U (en) | Wind generating set lightning protection device and wind generating set | |
| CN102900630A (en) | Lightning protection method and device for wind generating set | |
| CN105673339A (en) | Energy harvesting device | |
| CN201953571U (en) | Wind power generation device for high-voltage transmission tower | |
| CN206655783U (en) | A kind of wind-driven generator lightning-protection module | |
| CN208236584U (en) | A kind of wind power generation unit blade lightning-protection system | |
| CN206003980U (en) | A kind of distribution line carried hanging type ground knife | |
| CN204789610U (en) | Vibration signal screening storage device based on draw rotational speed in follow fan vibration signal | |
| CN202759155U (en) | A lightning protection device of the main shaft bearing of a wind turbine generator at a plateau | |
| CN104595102B (en) | A kind of field wind-force electricity getting device | |
| CN203189203U (en) | Wind power generation and transmission network system | |
| CN105322729A (en) | Slip ring with wireless communication function applied to wind driven generator | |
| CN201250868Y (en) | Wind electric power generation brake device | |
| CN202153602U (en) | Wind turbine generator set lightning protection system having carbon powder collecting device | |
| CN207018148U (en) | A kind of lightning protection device of wind power generating set | |
| CN204216727U (en) | A kind ofly be connected the thrust generator coordinated with horizontal water turbine | |
| CN204013068U (en) | A kind of energy-saving screw rod pump surface drive | |
| CN205047363U (en) | Wind power generation device with lightning arrester | |
| CN211528499U (en) | Impulse current generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |