CN218732014U - Busbar protection device, electrical system and wind turbine generator - Google Patents

Abstract

The utility model relates to the technical field of electrical protection, a busbar protection device, an electrical system and a wind turbine generator are provided, which comprises a protection box, a first insulating piece and/or a second insulating piece, wherein the protection box is covered outside a busbar main body, the protection box is provided with a first opening and a second opening, the first opening is used for passing through an input braid connected with the input end of the busbar main body, and the second opening is used for passing through an output braid connected with the output end of the busbar main body; the first insulating part is arranged on the inner surface of the protection box, and the second insulating part prevents adjacent two-phase busbars of the busbar main body from discharging mutually. The protective housing can prevent drop of water or foreign matters in the engine room from entering the protective housing and influencing the normal operation of the busbar main body, the first insulating part cuts off the space between the busbar main body and the protective housing, the second insulating part prevents the adjacent two-phase busbar of the busbar main body from discharging, the protection performance of the busbar main body is enhanced, and thus the normal operation of the wind turbine generator is ensured.

Description

Busbar protection device, electrical system and wind turbine generator

Technical Field

The utility model relates to an electrical protection technical field especially relates to a female protector, electrical system and wind turbine generator system of arranging.

Background

The copper bar has large current-carrying capacity and simple structure, and in the existing wind turbine generator set arranged on the transformer, numerous manufacturers adopt the copper bar to connect the converter and the transformer. However, for an offshore wind turbine, the humidity in the nacelle of the wind turbine is high, water drops are easily formed at the top of the nacelle and drip, copper bars for connecting a converter and a transformer in the existing wind turbine are exposed in the nacelle, and the water drops at the top of the nacelle may drip on the exposed copper bars to cause electric system faults when dripping; in addition, because the space of the generator room of the transformer overhead unit of the wind turbine generator is compact, the gap between the copper bar and the peripheral metal part or the adjacent copper bar is small, the risk of arc discharge exists, the fault of an electrical system is easily caused, and the normal operation of the wind turbine generator is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a female protector, electrical system and wind turbine generator system of arranging for solve among the prior art copper bar and expose in the cabin, the water droplet at cabin top is easy to drip on the copper bar and the copper bar less exists in the clearance between with peripheral metal part or the adjacent copper bar and draws the arc risk of discharging and easily cause the defect that electrical system trouble influences wind turbine generator system normal operating.

The utility model provides a female protector that arranges, include:

the protection box is covered outside the busbar and is provided with a first opening and a second opening, the first opening is used for enabling an input woven belt connected with the input end of the busbar main body to penetrate through, and the second opening is used for enabling an output woven belt connected with the output end of the busbar main body to penetrate through;

a first insulator disposed on an inner surface of the shield case;

and/or the presence of a gas in the gas,

and the second insulating part is used for preventing the adjacent two-phase busbar of the busbar main body from discharging mutually.

According to the utility model provides a pair of female protector that arranges, the second insulator sets up female first edge and/or the second edge of arranging, wherein, first edge with the second edge does respectively female arranging two relative edges.

According to the utility model provides a pair of female protector that arranges still includes the generating line and presss from both sides, the generating line presss from both sides and is used for the centre gripping female arranging, the generating line presss from both sides fixedly to be set up in the protective housing, just second insulating part card is in the generating line presss from both sides.

According to the utility model provides a pair of female protector that arranges, the guard box includes:

the box main body is provided with a cavity for accommodating the busbar, the first opening and the second opening are arranged on the box main body, and the first insulating piece is arranged on the inner surface of the box main body;

and a cover plate covering the upper side of the box main body.

According to the bus bar protection device provided by the utility model, a plurality of heat dissipation holes are arranged on the box main body and communicated with the cavity;

and/or the presence of a gas in the gas,

a heat dissipation gap is reserved between the cover plate and the box main body and communicated with the cavity.

According to the utility model provides a pair of female protector that arranges, the apron slope sets up the top of case main part.

According to the utility model provides a pair of female protector that arranges, the edge of apron is provided with the lid and follows, the lid along protrusion in case main part.

The utility model also provides an electric system, include:

a current transformer;

a transformer;

the busbar assembly is electrically connected with the converter and the transformer;

a busbar protection device as claimed in any preceding claim.

According to the utility model provides a pair of electrical system, female subassembly of arranging includes:

the two ends of the first phase busbar are respectively connected with a first phase output end of the converter and a first phase input end of the transformer;

two ends of the second-phase bus bar are respectively connected with a second-phase output end of the converter and a second-phase input end of the transformer;

the two ends of the third phase bus bar are respectively connected with a third phase output end of the converter and a third phase input end of the transformer;

and the number of the second insulating pieces of the busbar protection device is three, and the three second insulating pieces are respectively arranged at the first edge and/or the second edge of the first phase busbar, the second phase busbar and the third phase busbar.

The utility model also provides a wind turbine generator system, include as above-mentioned any one embodiment female protector or the electrical system of arranging.

The utility model provides a female protector that arranges, electrical system and wind turbine generator system, through setting up the protective housing outside female main part of arranging, can prevent drop of water or foreign matter in the cabin from entering into the protective housing and influencing female normal operating who arranges the main part, and set up first insulating part and can cut off the space between female main part of arranging and the protective housing, the second insulating part can prevent that the adjacent double-phase female row of female main part from taking place each other and discharging, can effectively increase electric clearance and creepage distance between the adjacent double-phase female row, the reinforcing is to female protective film who arranges the main part, in order to play the guard action to female main part of arranging, guarantee electrical system's normal operating, thereby guarantee wind turbine generator system's normal operating.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is one of schematic diagrams of a busbar installed in a busbar protection device according to the present invention;

fig. 2 is a second schematic view of the bus bar installed in the bus bar protection device according to the present invention;

fig. 3 is one of the schematic diagrams of the bus bar clamp clamping busbar provided by the present invention;

fig. 4 is a second schematic view of a bus bar clamp clamping busbar provided by the present invention;

fig. 5 is a third schematic view (hiding the first-phase bus bar) of the bus bar clamp bus bar provided by the present invention;

fig. 6 is a schematic structural view of a bus bar clamp provided by the present invention;

fig. 7 is a schematic view of a busbar provided by the present invention;

fig. 8 is one of perspective views of the protective box provided by the present invention;

fig. 9 is a second perspective view of the protective box provided by the present invention;

fig. 10 is a perspective view of the box main body provided by the present invention;

fig. 11 is a perspective view of a first insulating plate provided by the present invention;

fig. 12 is a perspective view of a second insulating plate provided by the present invention;

fig. 13 is a perspective view of the cover plate provided by the present invention.

Reference numerals:

1. a protective box; 11. a box main body; 111. a first side plate;

112. a second side plate; 113. a base plate; 114. a first heat dissipation hole;

115. a second heat dissipation hole; 116. an opening; 12. a cover plate;

121. a cover rim; 13. a supporting strip; 2. a fixed mount;

3. a bus bar clamp; 31. a bus bar clamp body; 32. a bus clamp cover plate;

33. a bus duct; 4. a first insulating plate; 5. a second insulating plate;

51. a through hole; 6. a second insulating member; 61. a first insulating paper;

62. a second insulating paper; 7. a first phase busbar; 8. a second-phase bus bar;

9. and a third phase busbar.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The busbar protection device, the electrical system and the wind turbine generator according to the present invention will be described with reference to fig. 1 to 13.

As shown in fig. 1, the utility model provides a female protector that arranges, including protective housing 1, first insulator and/or second insulator 6.

The protection box 1 covers the busbar body, and the protection box 1 can be provided with a first opening and a second opening, wherein the first opening can be used for an input braided belt to pass through so that the input braided belt can be connected with the input end of the busbar body; the second opening can be used for the output braid to pass through to make the output braid can be connected with female output of arranging the main part. Like this, protective housing 1 covers and establishes and to prevent that drop of water or foreign matter in the cabin from entering into protective housing 1 outside female arranging the main part and influencing female normal operating who arranges the main part to can play the guard action to female arranging the main part, with the normal operating who guarantees electrical system, thereby guarantee wind turbine generator system's normal operating.

Here, the input braid may connect an output terminal of the converter with an input terminal of the busbar body, and the output braid may connect an output terminal of the busbar body with an input terminal of the transformer.

And, first insulating part can set up the internal surface at protective housing 1, and like this, first insulating part can be separated female main part and protective housing 1, can prevent female main part of arranging to discharge protective housing 1.

The busbar protection device may further include a second insulating member 6, and the second insulating member 6 may be used to prevent mutual discharge between adjacent two busbars of the busbar body. Like this, second insulator 6 can prevent that the adjacent double-phase female row of female main part from taking place each other to discharge, can effectively increase the electric clearance and the creepage distance between the adjacent double-phase female row.

According to the arrangement, the protective box 1 is arranged outside the busbar main body, so that water drops or foreign matters in an engine room can be prevented from entering the protective box 1 to influence the normal operation of the busbar main body, and the first insulating piece is arranged between the busbar main body and the protective box 1 to separate the space between the busbar main body and the protective box 1; set up second insulating part 6 between two adjacent female rows of female main part of arranging, second insulating part 6 can prevent that adjacent double-phase female row from taking place each other and discharging, can effectively increase electric clearance and creepage distance between the adjacent double-phase female row, and the protection performance of reinforcing to female main part of arranging to play the guard action to female main part of arranging, guarantee electrical system's normal operating, thereby guarantee wind turbine generator system's normal operating.

In an alternative embodiment, the second insulator 6 may be disposed at a first edge and/or a second edge of the busbar. In this way, the second insulating member 6 may separate the adjacent two-phase bus bars to prevent the two-phase bus bars from discharging.

Here, the first edge and the second edge may be two opposite edges of the busbar, respectively, and specifically, as shown in fig. 3, the first edge may be an upper edge of the busbar, and the second edge may be a lower edge of the busbar. It should be noted that: the terms "upper" and "lower" herein may be oriented above and below as shown in fig. 1 and 3.

In an optional embodiment, the three-phase output end of the converter and the three-phase input end of the transformer are electrically connected through a three-phase busbar of the busbar body respectively.

Specifically, a first phase output end of the converter and a first phase input end of the transformer can be electrically connected through a first phase bus bar 7; the second phase output end of the converter and the second phase input end of the transformer can be electrically connected through a second phase bus bar 8; the third phase output end of the converter and the third phase input end of the transformer can be electrically connected through a third phase bus bar 9.

Furthermore, as shown in fig. 4, the first phase busbar 7, the second phase busbar 8 and the third phase busbar 9 are sequentially distributed along the vertical direction, the busbar protection device may include three second insulating members 6, and the three second insulating members 6 may be respectively disposed at the first edge and/or the second edge of the first phase busbar 7, the second phase busbar 8 and the third phase busbar 9. Like this, can separate the female row of three-phase respectively through three second insulator 6, make adjacent female arranging between can not discharge each other, increased electric clearance and creepage distance between the adjacent female row.

In an alternative embodiment, the second insulating member 6 may include two insulating papers, a first insulating paper 61 and a second insulating paper 62, respectively, and the first insulating paper 61 and the second insulating paper 62 may be disposed at the first edge and the second edge of the bus bar, respectively. Therefore, the insulation strength among the busbars can be further enhanced, and the electric gap and the creepage distance between the adjacent two-phase busbars of the busbar main body can be further increased.

In this embodiment, the first insulating paper 61 and the second insulating paper 62 may be U-shaped, and a U-shaped opening of the first insulating paper 61 may be disposed downward, so that the first edge of the busbar may be embedded in the first insulating paper 61; the U-shaped opening of the second insulating paper 62 may be disposed upward, so that the second edge of the bus bar may be embedded in the second insulating paper 62.

The utility model discloses an in the optional embodiment, female protector that arranges can also include bus-bar clamp 3, and bus-bar clamp 3 can be used for the female main part of arranging of centre gripping to bus-bar clamp 3 can fix the setting in protective housing 1, like this, can fix female main part in protective housing 1 through bus-bar clamp 3. Here, the bus bar holder 3 may be of an insulating material.

In an optional embodiment, the bus bar clamp 3 may include a bus bar clamp body 31 and a bus bar clamp cover plate 32, a bus bar groove 33 for clamping the bus bar is provided on the bus bar clamp body 31, the bus bar clamp cover plate 32 is fixed on the bus bar clamp body 31, and the bus bar clamp cover plate 32 may plug the notch of the bus bar groove 33, so that the bus bar is separated from the notch of the bus bar groove 33.

In an alternative embodiment, the second insulator 6 may be snapped into the bus bar clamp 3. In this way, the second insulating member 6 can be fixed to the bus bar clamp 3.

Specifically, the second insulating member 6 may be located in the bus duct 33, and the second insulating member 6 may abut against a groove wall of the bus duct 33 and the bus bar clamp cover plate 32, so that the second insulating member 6 is clamped with the bus bar clamp 3.

In this embodiment, as shown in fig. 5 and 6, three bus ducts 33 may be disposed on the bus bar clamp 3, the three bus ducts 33 are uniformly distributed along the vertical direction, and the first phase busbar 7, the second phase busbar 8, and the third phase busbar 9 are respectively located in the three bus ducts 33.

In an optional embodiment, the width of the bus duct 33 may be greater than the thickness of the busbar, so that a certain movement margin may be left between the two copper plates of the busbar to adapt to woven belts with different thicknesses; and can be convenient for input braid over braid or output braid over braid stretch into between female two copper of arranging to be convenient for input braid over braid or output braid over braid and female arranging and be connected.

In the optional embodiment of the present invention, the protection box 1 may include a box main body 11, wherein the box main body 11 is provided with a cavity for accommodating the busbar main body, and the first opening and the second opening may be both disposed on the box main body 11.

The protective box 1 can further comprise a cover plate 12, the cover plate 12 can cover the upper side of the box main body 11, and thus when water drops on the top of the cabin drop on the cover plate 12, the cover plate 12 can block the water drops, and the water drops can be prevented from entering the protective box 1 and dropping on the busbar main body.

In an alternative embodiment, the box body 11 may be provided with a plurality of heat dissipation holes, and the heat dissipation holes are communicated with the cavity. Therefore, heat generated in the operation process of the busbar body can be dissipated through the heat dissipation holes, and the phenomenon that the heat is accumulated in the operation process of the busbar body to reduce the current-carrying capacity can be avoided.

In this embodiment, as shown in fig. 8, the box main body 11 may include a first side plate 111 and a second side plate 112 that are oppositely disposed, and a bottom plate 113 that connects the first side plate 111 and the second side plate 112, wherein the first opening and the second opening are respectively located between the two side plates, and the first side plate 111 may be connected to an oblique beam in the cabin through a fixing frame 2, so that the protective box 1 may be fixedly installed in the cabin; the second side plate 112 may be provided with a plurality of first heat dissipating holes 114, and the bottom plate 113 may be provided with a plurality of second heat dissipating holes 115, so as to increase the heat dissipating effect of the protection box 1.

In an alternative embodiment, the first insulator may comprise two insulating plates, respectively a first insulating plate 4 and a second insulating plate 5, the first insulating plate 4 may be arranged inside the first side plate 111; the second insulating plate 5 may be disposed inside the second side plate 112, and the second insulating plate 5 may have a plurality of through holes 51, and the plurality of through holes 51 are disposed opposite to the plurality of first heat dissipation holes 114, so that the second insulating plate 5 is prevented from blocking the first heat dissipation holes 114 and reducing the heat dissipation effect of the protection box 1.

Here, the first heat dissipation hole 114 may be disposed in a staggered manner with respect to the busbar body, so that the first heat dissipation hole 114 avoids the busbar body region, and the foreign matter in the cabin may be prevented from directly falling onto the busbar body through the first heat dissipation hole 114.

In an optional embodiment, as shown in fig. 1, 8 and 9, a heat dissipation gap may be left between the cover plate 12 and the box main body 11, and the heat dissipation gap may be communicated with the cavity, so that a heat dissipation effect of the protection box 1 may be improved, a heat dissipation effect of the busbar main body may be further improved, and an improvement of a current-carrying capacity of the busbar main body is facilitated.

Here, the top end of the box main body 11 is provided with an opening 116 communicating with the cavity, the cover plate 12 covers above the opening 116, and a gap is left between the cover plate 12 and the opening 116 to form a heat dissipation gap, which communicates with the cavity through the opening 116, so that heat in the box main body 11 is discharged through the heat dissipation gap.

In this embodiment, the cover plate 12 may be connected to the top end of the box main body 11 by a support bar 13.

Specifically, the cover plate 12 may be coupled to the top end of the box main body 11 by four support bars 13, where the cover plate 12 may be welded to the support bars 13, or the cover plate 12 may be detachably coupled to the support bars 13 by bolts.

In an alternative embodiment, the cover plate 12 may be disposed obliquely above the box main body 11. In this way, the cover plate 12 can drain water drops dropping on the cover plate 12, so that the water drops dropping on the cover plate 12 can flow out of the protective box 1 along the cover plate 12.

In an alternative embodiment, the edge of the cover plate 12 may be provided with a cover rim 121, and the cover rim 121 may protrude from the box body 11, so that water drops dripping on the cover plate 12 are prevented from entering the protective box 1.

In an alternative embodiment, the shielding box 1 may be made of metal.

The following is the utility model provides an electrical system describes, but the female protector that arranges that electrical system and the above-mentioned description of following description correspond the reference each other.

The utility model provides an electrical system, can include converter, transformer, mother row's main part and mother row's protector, wherein, mother row's main part electricity connects converter and transformer; and the busbar protection device can be any one of the busbar protection devices.

The utility model provides a beneficial effect that electric system reached with the utility model provides a beneficial effect that female protector of arranging reached is unanimous, then no longer gives unnecessary details here.

In an optional embodiment of the present invention, the busbar body may include a first phase busbar 7, a second phase busbar 8, and a third phase busbar 9, where two ends of the first phase busbar 7 are respectively connected to a first phase output end of the converter and a first phase input end of the transformer; two ends of the second-phase bus bar 8 are respectively connected with a second-phase output end of the converter and a second-phase input end of the transformer; two ends of the third phase busbar 9 are respectively connected with the second phase output end of the converter and the third phase input end of the transformer.

And, female second insulator 6 of arranging protector can be provided with three, and three second insulator 6 can set up respectively at the female first edge and/or the second edge of arranging 7, the female row 8 of second phase and the female row 9 of third phase of arranging in first phase. Like this, can be respectively female the arranging with the three-phase separate through three second insulator 6, can prevent that the three-phase from arranging each other between discharging, can increase female electrical clearance and creepage distance of arranging.

It should be noted that: the busbar can be a copper bar or an aluminum bar or other bar plates made of conductive materials.

Face below the utility model provides a wind turbine generator system describes, but the wind turbine generator system of following description corresponds the reference each other with female protector or the electric system that arranges of the above-mentioned description.

The utility model provides a pair of wind turbine generator system can include female protector or the electrical system as above-mentioned any embodiment of arranging as above-mentioned any embodiment.

The utility model provides a beneficial effect that wind turbine generator system reached with the utility model provides a beneficial effect that female protector or electric system of arranging reached is unanimous, then no longer gives unnecessary details here.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A busbar protection device, comprising:

the protection box is covered outside the busbar main body and provided with a first opening and a second opening, the first opening is used for enabling an input woven belt connected with the input end of the busbar main body to penetrate through, and the second opening is used for enabling an output woven belt connected with the output end of the busbar main body to penetrate through;

a first insulator disposed on an inner surface of the shield case;

and/or the presence of a gas in the atmosphere,

and the second insulating piece is used for preventing the adjacent two-phase busbars of the busbar main body from being mutually discharged.

2. The busbar protection device according to claim 1, wherein the second insulating member is disposed at a first edge and/or a second edge of the busbar, wherein the first edge and the second edge are two opposite edges of the busbar, respectively.

3. The busbar protection device according to claim 2, further comprising a busbar clamp for clamping the busbar body, wherein the busbar clamp is fixedly arranged in the protection box, and the second insulating member is clamped in the busbar clamp.

4. The busbar protection device according to claim 1, wherein the protective case comprises:

the box main body is provided with a cavity for accommodating the busbar main body, the first opening and the second opening are both arranged on the box main body, and the first insulating piece is arranged on the inner surface of the box main body;

and a cover plate covering the upper side of the box main body.

5. The busbar protection device according to claim 4, wherein a plurality of heat dissipation holes are formed in the box body, and the heat dissipation holes are communicated with the cavity;

and/or the presence of a gas in the gas,

a heat dissipation gap is reserved between the cover plate and the box main body and communicated with the cavity.

6. The busbar protection device according to claim 4, wherein the cover plate is disposed obliquely above the box main body.

7. The busbar protection device according to claim 4, wherein a cover edge is arranged at the edge of the cover plate, and the cover edge protrudes out of the box main body.

8. An electrical system, comprising:

a current transformer;

a transformer;

the busbar body is electrically connected with the converter and the transformer;

the busbar protection device according to any one of claims 1 to 7.

9. The electrical system of claim 8, wherein the busbar body comprises:

the two ends of the first phase busbar are respectively connected with the first phase output end of the converter and the first phase input end of the transformer;

two ends of the second-phase bus bar are respectively connected with a second-phase output end of the converter and a second-phase input end of the transformer;

the two ends of the third phase bus bar are respectively connected with a third phase output end of the converter and a third phase input end of the transformer;

and the number of the second insulating pieces of the busbar protection device is three, and the three second insulating pieces are respectively arranged at the first edge and/or the second edge of the first phase busbar, the second phase busbar and the third phase busbar.

10. A wind turbine comprising a busbar protection device according to any one of claims 1 to 7 or an electrical system according to claim 8 or 9.

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