CN102900630A - Lightning protection method and device for wind generating set - Google Patents
Lightning protection method and device for wind generating set Download PDFInfo
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- CN102900630A CN102900630A CN2012104149035A CN201210414903A CN102900630A CN 102900630 A CN102900630 A CN 102900630A CN 2012104149035 A CN2012104149035 A CN 2012104149035A CN 201210414903 A CN201210414903 A CN 201210414903A CN 102900630 A CN102900630 A CN 102900630A
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- blade
- hubcap
- generating set
- lightning current
- wind power
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Abstract
The invention provides a lightning protection method and device for a wind generating set. A lightning arrester, a down lead and a sliding contact conducting structure are used to construct a lightning current discharge path of a blade, a hub cap, a cabin cover and the ground, wherein the down lead is laid inside the blade; the sliding contact conducting structure comprises two connecting terminals produced by using good electrical conductors; one connecting terminal is arranged at the root of the blade; the other connecting terminal is arranged on the hub cap; when the blade rotates, sliding contact is formed between the two connecting terminals and is used for leading lightning current on the blade to the hub cap; the down lead is connected with the lightning arrester and the connecting terminal of the sliding contact conducting structure, which is arranged at the root of the blade; the connecting terminal of the sliding contact conducting structure, which is arranged on the hub cap, is connected with a lightning current channel of the cabin of the wind generating set, and thus the lightning current discharge path of the blade, the hub cap, the cabin cover and the ground is formed; and the lightning current is completely prevented from flowing through a variable pitch bearing, and thus the safety of the variable pitch bearing is ensured.
Description
Technical field
The present invention relates to the wind power generating set shocking preventing technology, be specifically related to a kind of wind power generating set lightening arresting method and device.
Background technique
Wind energy is as a kind of renewable energy sources of cleaning, and its amount of accumulateing is huge, more and more is subjected to the attention of countries in the world.Along with the increase of wind power generating set single-machine capacity, rotor diameter increases, and the height that wind power generating set is liftoff is also in continuous increase.Add that wind power generating set generally all is positioned at open area or the alpine belts such as Plain, these areas belong to the multiple district of thunder and lightning, so the lightning protection of wind power generating set safety comes into one's own day by day.
When wind power generating set was struck by lightning, bearing was to be easy to the parts that are damaged in the unit.Blade to the lightening arresting method of wheel hub is that the blade down lead is connected to the root of blade flange at present, the root of blade flange docks with pitch variable bearings on the wheel hub again, generally take slip-ring device and discharging gap to come the bypass flow lightning current, avoid most of lightning current to pass through pitch variable bearings, but these devices can only be shunted a part of lightning current, still can flow through pitch variable bearings by some lightning current, after lightning current flows through pitch variable bearings for a long time, roller and lasso in the pitch variable bearings are sustained damage, thereby jeopardize the operational reliability of pitch variable bearings, affect the safe operation of wind power generating set.In addition, lightning current also can pass through wheel hub, will produce interference, destruction to the weak current equipment on the wheel hub (such as sensor, encoder etc.), thereby affects normal, the safe operation of wind power generating set.
Therefore be necessary prior art is improved.
Summary of the invention
In the prior art, the lightning current leakage path of general design has all passed through the parts such as pitch variable bearings, hub body, therefore no matter take which kind of bypass flow mode, lightning current all will be by the pitch variable bearings parts, to produce damage to pitch variable bearings inevitably, thereby affect the safe and stable operation of unit.For above-mentioned reason, the invention provides a kind of wind power generating set lightening arresting method and device, make up a lightning current discharge channel that is independent of pitch variable bearings, hub body, pitch variable bearings is protected.
The technical solution used in the present invention is: a kind of wind power generating set lightening arresting method;---the lightning current of hubcap---engine room cover---the earth path of releasing that makes up a blade; lightning current is flowed through and is directly conducted to hubcap behind the blade; reach again engine room cover; import at last the earth into; avoid lightning current to flow through pitch variable bearings, wind power generating set is protected.
Further, the conductive channel between described blade and the hubcap is arranged on before the root of blade flange.
Further, the optimum electric conductor sliding contact of passing through between described blade and the hubcap forms conductive channel.
Be used for realizing a kind of wind power generating set lighting protection device of above-mentioned lightening arresting method, comprise arrester, down lead, wiping conductive structure, described arrester is installed on the fan blade; Described wiping conductive structure comprises two splicing ears of being made by optimum electric conductor, one of them splicing ear is installed in root of blade, the another one terminal is installed on the hubcap, form sliding contact between two splicing ears during blade rotation, be used for the lightning current on the blade is guided to hubcap; Described down lead connects the splicing ear that described arrester and described wiping conductive structure are installed in root of blade, described wiping conductive structure is installed in the lightning current passage of the splicing ear connection wind generating set engine room on the hubcap, namely be built into from blade---the lightning current of hubcap---engine room cover---the earth path of releasing, avoid lightning current to flow through pitch variable bearings fully, guaranteed the safety of pitch variable bearings.
Further, described down lead be laid in blade surface or blade interior, an end is mounted on the arrester on the blade, and the other end is connected to the splicing ear that described wiping conductive structure is installed in root of blade.
Further, two splicing ears of described wiping conductive structure are respectively brush and conductive hoop, and described brush is installed in root of blade, and conductive hoop is installed on the hubcap, and perhaps described conductive hoop is installed in root of blade, and brush is installed on the hubcap; Sliding contact forms conductive channel between described brush and the conductive hoop.
The invention has the advantages that: 1, the mode of thinking that breaks traditions of lightening arresting method of the present invention,---the lightning current of hubcap---engine room cover---the earth path of releasing that made up one from blade, so that lightning current is inner without pitch variable bearings and wind power generating set, wind power generating set is effectively protected; 2, adopt brush and conductive hoop to form blade---the conductive channel between the hubcap, simple and reasonable, conductive effect is well with low cost; 3, the mounting type of brush and conductive hoop is flexible and changeable, and the Consumer can select suitable mounting type according to self needs, and is practical, highly versatile, can extensive use and various wind power generating set on.
Description of drawings
Fig. 1 is wind power generating set lighting protection device embodiment's 1 of the present invention structural representation;
Fig. 2 is the local enlarged diagram of Fig. 1;
Fig. 3 is wind power generating set lighting protection device embodiment's 2 of the present invention structural representation;
Fig. 4 is the local enlarged diagram of Fig. 3;
Fig. 5 is wind power generating set lighting protection device embodiment's 3 of the present invention structural representation;
Fig. 6 is the local enlarged diagram of Fig. 5;
Among the figure, 1 is blade, and 2 is down lead, and 3 is carbon brush supports, 4 carbon brush lead wires, and 5 is carbon brush, and 6 is conductive hoop, and 7 is hubcap.
Embodiment
Further set forth technological scheme of the present invention below in conjunction with the drawings and specific embodiments.
Traditional wind power generating set lightening arresting method is from blade, and---flange at bottom---wheel hub---pitch variable bearings bypass flow makes up a lightning current path, this lightning current passage can only be with a part of carrying-off, also have the part lightning current to enter wind power generating set inside by pitch variable bearings, thereby affect normal, the safe operation of wind power generating set.For this problem; the invention provides a kind of wind power generating set lightening arresting method;---the lightning current of hubcap---engine room cover---the earth path of releasing that makes up a blade; lightning current is flowed through and is directly conducted to hubcap behind the blade; reach again engine room cover; import at last the earth into; avoid lightning current to flow through pitch variable bearings; wind power generating set is protected; lightning current provided by the invention path is without the root of blade flange; but at hubcap just with the lightning current carrying-off, avoid the lightning current pitch variable bearings of flowing through fully, wind power generating set is played a protective role.
As the further mode of execution of lightening arresting method of the present invention, the conductive channel between described blade and the hubcap is arranged on before the root of blade flange.
Further mode of execution as lightening arresting method of the present invention, the optimum electric conductor sliding contact of passing through between described blade and the hubcap forms conductive channel, in the process of wind power generating set operation, blade and hubcap are relative movement, and the present invention is by using optimum electric conductor sliding contact to form current channel between the blade of relative movement and hubcap.
Be used for realizing a kind of wind power generating set lighting protection device of above-mentioned lightening arresting method, comprise arrester, down lead, wiping conductive structure, described arrester is installed on the fan blade; Described wiping conductive structure comprises two splicing ears of being made by optimum electric conductor, one of them splicing ear is installed in root of blade, the another one terminal is installed on the hubcap, form sliding contact between two splicing ears during blade rotation, be used for the lightning current on the blade is guided to hubcap; Described down lead connects the splicing ear that described arrester and described wiping conductive structure are installed in root of blade, described wiping conductive structure is installed in the lightning current passage of the splicing ear connection wind generating set engine room on the hubcap, namely be built into from blade---the lightning current of hubcap---engine room cover---the earth path of releasing, avoid lightning current to flow through pitch variable bearings fully, guaranteed the safety of pitch variable bearings.
As the further mode of execution of lighting protection device of the present invention, the described down lead blade interior that is laid in, an end is mounted on the arrester on the blade, and the other end is connected to the splicing ear that described wiping conductive structure is installed in root of blade.
Further mode of execution as lighting protection device of the present invention, two splicing ears of described wiping conductive structure are respectively brush and conductive hoop, and described brush is installed in root of blade, and conductive hoop is installed on the hubcap, perhaps described conductive hoop is installed in root of blade, and brush is installed on the hubcap; Sliding contact forms conductive channel between described brush and the conductive hoop.
The below sets forth embodiments of the invention with carbon brush as brush.
Embodiment 1
Such as Fig. 1, shown in Figure 2, in blade 1, be laid with down lead 2, down lead 2 in the blade 1 blade 1 inside that is laid in, near blade root, be connected to the carbon brush supports 3 on blade 1 surface, carbon brush supports 3 is used for fixedly carbon brush 5, the lead-in wire 4 of carbon brush 5 is connected with carbon brush supports 3, carbon brush 5 brushes are received the conductive hoop 6 that is fixed on the hubcap 7, so just realized the electrical connection of blade 1 to hubcap 7, when lightning current hits the blade arrester, the path of releasing of lightning current the is the blade arrester---conductive hoop of down lead---blade surface carbon brush---on the hubcap, like this, lightning current has just conducted on the hubcap, and then hubcap conducts to engine room cover by the thunder and lightning device with lightning current, passes to greatly again.
Such as Fig. 3, shown in Figure 4, in blade 1, be laid with down lead 2, down lead 2 in the blade 1 blade 1 inside that is laid in, near blade root, be connected to the conductive hoop 6 of blade surface, fixed a carbon brush supports 3 in that hubcap 7 is interior, be used for installing carbon brush 5, carbon brush 5 brushes are received on the conductive hoop 6, the carbon brush lead wire 4 that is connected with carbon brush 5 also is fixed on the carbon brush supports 3, come transition to connect blade 1 and hubcap 7 with carbon brush 5, thereby realized the electrical connection between the rotary component, when lightning current hit the blade arrester, the path of releasing of lightning current was the blade arrester---down lead---blade surface conductive hoop---carbon brush---hubcap, like this, lightning current has just conducted on the hubcap, and then hubcap conducts to engine room cover by the thunder and lightning device with lightning current, passes to greatly again.
Such as Fig. 5, shown in Figure 6, in blade 1, be laid with down lead 2, down lead 2 in the blade 1 blade 1 inside that is laid in, embodiment 3 is with embodiment 1 difference, among the embodiment 3, described carbon brush supports 3 in the vertical directions are installed in the root of blade next door, described carbon brush lead wire 4 connects described down lead 2, described conductive hoop 6 hoops are contained in the side of hubcap 7, described carbon brush 5 brushes connect described conductive hoop 6, so just realized blade 1 to the electrical connection of hubcap 7, when lightning current hit the blade arrester, the path of releasing of lightning current the was the blade arrester---conductive hoop of down lead---blade surface carbon brush---on the hubcap, like this, lightning current has just conducted on the hubcap, and then hubcap conducts to engine room cover by the thunder and lightning device with lightning current, passes to greatly again.
Above-described embodiment only is the preferred embodiments of the present invention; those of ordinary skills do not break away from do under the enlightenment of essence of the present invention and technology do not have novelty and creationary distortion and a retouching; all should be considered as within protection scope of the present invention, protection scope of the present invention is decided on its claims.
Claims (6)
1. wind power generating set lightening arresting method; it is characterized in that;---the lightning current of hubcap---engine room cover---the earth path of releasing that makes up a blade; lightning current is flowed through and is directly conducted to hubcap behind the blade; reach again engine room cover; import at last the earth into, avoid lightning current to flow through pitch variable bearings, wind power generating set is protected.
2. described a kind of wind power generating set lightening arresting method according to claim 1 is characterized in that the conductive channel between described blade and the hubcap is arranged on before the root of blade flange.
3. described a kind of wind power generating set lightening arresting method according to claim 1 and 2 is characterized in that, the optimum electric conductor sliding contact of passing through between described blade and the hubcap forms conductive channel.
4. be used for realizing a kind of wind power generating set lighting protection device of the described lightening arresting method of claim 1 ~ 3 any one, comprise arrester, down lead, wiping conductive structure, described arrester is installed on the fan blade, it is characterized in that, described wiping conductive structure comprises two splicing ears of being made by optimum electric conductor, one of them splicing ear is installed in root of blade, the another one terminal is installed on the hubcap, form sliding contact between two splicing ears during blade rotation, be used for the lightning current on the blade is guided to hubcap; Described down lead connects the splicing ear that described arrester and described wiping conductive structure are installed in root of blade, described wiping conductive structure is installed in the lightning current passage that splicing ear on the hubcap connects wind generating set engine room, namely is built into from the blade---lightning current of hubcap---engine room cover---the earth path of releasing.
5. described a kind of wind power generating set lighting protection device according to claim 4, it is characterized in that, the described down lead blade interior that is laid in, an end is mounted on the arrester on the blade, and the other end is connected to the splicing ear that described wiping conductive structure is installed in root of blade.
6. described a kind of wind power generating set lighting protection device according to claim 4, it is characterized in that, two splicing ears of described wiping conductive structure are respectively brush and conductive hoop, described brush is installed in root of blade, conductive hoop is installed on the hubcap, perhaps described conductive hoop is installed in root of blade, and brush is installed on the hubcap; Sliding contact forms conductive channel between described brush and the conductive hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104149035A CN102900630A (en) | 2012-10-26 | 2012-10-26 | Lightning protection method and device for wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104149035A CN102900630A (en) | 2012-10-26 | 2012-10-26 | Lightning protection method and device for wind generating set |
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| CN102900630A true CN102900630A (en) | 2013-01-30 |
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| CN2012104149035A Pending CN102900630A (en) | 2012-10-26 | 2012-10-26 | Lightning protection method and device for wind generating set |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527421A (en) * | 2013-11-08 | 2014-01-22 | 广东明阳风电产业集团有限公司 | Blade lightning protection device of offshore wind generating set |
| WO2015074576A1 (en) * | 2013-11-22 | 2015-05-28 | 北京金风科创风电设备有限公司 | Lightning protection device, direct-drive wind turbine generator system and lightning protection method thereof |
| CN107430163A (en) * | 2015-02-27 | 2017-12-01 | 阿里安格如普公司 | Control lightning-protection system |
| CN107489597A (en) * | 2016-06-09 | 2017-12-19 | 西门子公司 | Lightning conductor system |
| CN110165559A (en) * | 2019-05-30 | 2019-08-23 | 安徽华希电力科技有限公司 | A kind of Wind turbines thunder-preventing graphite grounding device and its construction method |
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| CN1436283A (en) * | 2000-05-06 | 2003-08-13 | 阿洛伊斯·沃本 | Wind power installation |
| JP2005151749A (en) * | 2003-11-18 | 2005-06-09 | Ntn Corp | Lightning protection device of wind turbine generator bearing and bearing of the device |
| CN201916132U (en) * | 2010-12-13 | 2011-08-03 | 哈尔滨哈飞工业有限责任公司 | Lightning protection device for wind generating set blade |
| CN102278286A (en) * | 2010-06-10 | 2011-12-14 | 西门子公司 | Lightning protection system for a wind turbine |
| CN102384044A (en) * | 2011-11-16 | 2012-03-21 | 济南轨道交通装备有限责任公司 | Lightening protection device for wind generating set blade |
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2012
- 2012-10-26 CN CN2012104149035A patent/CN102900630A/en active Pending
Patent Citations (5)
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| CN1436283A (en) * | 2000-05-06 | 2003-08-13 | 阿洛伊斯·沃本 | Wind power installation |
| JP2005151749A (en) * | 2003-11-18 | 2005-06-09 | Ntn Corp | Lightning protection device of wind turbine generator bearing and bearing of the device |
| CN102278286A (en) * | 2010-06-10 | 2011-12-14 | 西门子公司 | Lightning protection system for a wind turbine |
| CN201916132U (en) * | 2010-12-13 | 2011-08-03 | 哈尔滨哈飞工业有限责任公司 | Lightning protection device for wind generating set blade |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527421A (en) * | 2013-11-08 | 2014-01-22 | 广东明阳风电产业集团有限公司 | Blade lightning protection device of offshore wind generating set |
| WO2015074576A1 (en) * | 2013-11-22 | 2015-05-28 | 北京金风科创风电设备有限公司 | Lightning protection device, direct-drive wind turbine generator system and lightning protection method thereof |
| EA033610B1 (en) * | 2013-11-22 | 2019-11-08 | Beijing Goldwind Science & Creation Windpower Equipment Co Ltd | Lightning protection device, direct-drive wind turbine generator system and lightning protection method thereof |
| US10612525B2 (en) | 2013-11-22 | 2020-04-07 | Beijing Goldwind Science & Creation Windpower | Lightning protection device, direct-drive wind turbine generator system and lightning protection method thereof |
| CN107430163A (en) * | 2015-02-27 | 2017-12-01 | 阿里安格如普公司 | Control lightning-protection system |
| CN107489597A (en) * | 2016-06-09 | 2017-12-19 | 西门子公司 | Lightning conductor system |
| CN107489597B (en) * | 2016-06-09 | 2020-07-03 | 西门子歌美飒可再生能源公司 | Lightning protection system |
| US10753342B2 (en) | 2016-06-09 | 2020-08-25 | Siemens Gamesa Renewable Energy A/S | Lighting protection system |
| CN110165559A (en) * | 2019-05-30 | 2019-08-23 | 安徽华希电力科技有限公司 | A kind of Wind turbines thunder-preventing graphite grounding device and its construction method |
| CN110165559B (en) * | 2019-05-30 | 2020-05-12 | 安徽华希电力科技有限公司 | Graphite lightning protection grounding device for wind turbine generator and construction method thereof |
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Application publication date: 20130130 |