Power cabinet, converter and wind power generation system

Abstract

The utility model discloses a power cabinet, a converter and a wind power generation system. The power cabinet comprises a cabinet body, a machine-side reactor and an adapter, the cabinet body is internally provided with an installation space, the machine-side reactor is installed in the installation space, the machine-side reactor is provided with a rotor terminal, one end of the adapter is electrically connected with the rotor terminal, the other end of the adapter is configured to be a rotor adapter end, and the rotor adapter end is used for being electrically connected with a rotor of a generator; the distance between the rotor switching end and the rotor is smaller than the distance between the rotor wiring end and the rotor. According to the power cabinet provided by the utility model, the distance between the rotor switching end and the rotor is set to be smaller than the distance between the rotor wiring end and the rotor, so that the wiring length of a rotor cable can be saved, and the wiring cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of converters, in particular to a power cabinet, a converter with the power cabinet and a wind power generation system with the converter. Background Art

[0002] In the relevant technology of wind turbines, the generator is located at a high altitude, the power cabinet of the converter is located below the generator, and a machine-side inductor is provided inside the power cabinet of the converter. The machine-side inductor has a rotor terminal. The rotor cable on the generator side needs to be wired from top to bottom from the top of the power cabinet and connected to the rotor terminal at the bottom of the power cabinet. In the prior art, the main circuit of the wind power generation system with this layout is relatively long, and the wiring cost of the rotor cable is relatively high.

[0003] Thus, there is room for improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the utility model provides a power cabinet, which is conducive to reducing the wiring cost of the rotor cable.

[0005] The utility model also provides a converter having the power cabinet.

[0006] The utility model also proposes a wind power generation system with the converter.

[0007] The power cabinet according to the embodiment of the utility model includes: a cabinet body, a machine-side inductor and an adapter, wherein the cabinet body has an installation space, the machine-side inductor is installed in the installation space, the machine-side inductor has a rotor terminal, one end of the adapter is electrically connected to the rotor terminal, and the other end of the adapter is constructed as a rotor adapter terminal, and the rotor adapter terminal is used to be electrically connected to the rotor of the generator; wherein the distance between the rotor adapter terminal and the rotor is smaller than the distance between the rotor terminal and the rotor.

[0008] According to the power cabinet of the embodiment of the utility model, by setting the distance between the rotor adapter terminal and the rotor to be smaller than the distance between the rotor connection terminal and the rotor, the wiring length of the rotor cable can be saved and the wiring cost can be saved.

[0009] According to some embodiments of the present invention, the generator is located above the cabinet, and the rotor adapter end is located on the top or side wall of the cabinet.

[0010] According to some embodiments of the present utility model, the cabinet includes a cabinet body and a raised portion connected to the cabinet body, the raised portion protrudes in a direction away from the cabinet body, and the raised portion provides an accommodating space for the adapter.

[0011] According to some embodiments of the present invention, the cabinet includes a side plate, a side space is formed between the machine-side inductor and the side plate, and the adapter is partially located in the side space.

[0012] According to some embodiments of the utility model, the cabinet body includes a first sub-cabinet and a second sub-cabinet, an intermediate space is formed between the first sub-cabinet and the second sub-cabinet, the machine-side inductor is located in the first sub-cabinet or the second sub-cabinet, and the adapter is partially located in the intermediate space.

[0013] According to some embodiments of the present invention, the rotor terminal is a three-phase terminal, the adapter is a three-phase adapter, and each phase adapter is connected to the rotor terminal of the same phase.

[0014] According to some embodiments of the present invention, the adapter is a hard adapter; or, the adapter is a soft adapter.

[0015] According to another aspect of the present invention, the converter includes the above-mentioned power cabinet, and the converter also includes a grid cabinet, which is located on one side of the power cabinet. The grid cabinet includes a stator contactor, and the stator contactor has a stator terminal.

[0016] According to the converter of the embodiment of the utility model, the power cabinet thereof can save the wiring length of the rotor cable and save the wiring cost by setting the distance between the rotor adapter terminal and the rotor to be smaller than the distance between the rotor connection terminal and the rotor.

[0017] According to another embodiment of the present invention, a wind power generation system includes a generator and the above-mentioned converter, wherein the generator has a stator and a rotor, the stator is connected to the stator terminal through a stator cable, and the rotor is connected to the rotor adapter terminal through a rotor cable.

[0018] According to the wind power generation system of the embodiment of the utility model, the power cabinet thereof can save the wiring length of the rotor cable and save the wiring cost by setting the distance between the rotor adapter end and the rotor to be smaller than the distance between the rotor connection terminal and the rotor.

[0019] According to some embodiments of the utility model, the wind power generation system further includes a box-type transformer, the box-type transformer has a grid-connected outgoing line, the grid-connected cabinet further includes a frame circuit breaker, the frame circuit breaker has a grid-connected terminal, and the grid-connected outgoing line is suitable for connecting to the grid-connected terminal. Additional aspects and advantages of the utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1is a front view of a converter according to an embodiment of the utility model (showing part of the power cabinet door);

[0021] Figure 2 is another front view of the converter according to an embodiment of the utility model (without showing the power cabinet door);

[0022] Figure 3 is a front view of a converter according to another embodiment of the utility model;

[0023] Figure 4 yes Figure 3 a side view of the converter shown;

[0024] Figure 5 yes Figure 3 The front view of the converter shown with the side panels removed;

[0025] Figure 6 yes Figure 5 a side view of the converter shown;

[0026] Figure 7 is a front view of a converter according to another embodiment of the utility model;

[0027] Figure 8 yes Figure 7 A perspective view of the converter shown;

[0028] Fig. 9 Schematic diagram of a wind power generation system according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] Wind power generation system 1000, converter 100, power cabinet 10, cabinet body 1, cabinet body 11, protrusion 12, electric control cabinet connection terminal 13, first sub-cabinet 14, second sub-cabinet 15, side plate 16, machine-side inductor 2, rotor terminal 21, adapter 3, rotor adapter terminal 31, transverse section 32, vertical section 33, adapter section 34, power cabinet door 4, grid-connected cabinet 20, stator contactor 201, stator terminal 2011, frame circuit breaker 202, grid-connected terminal 2021, control cabinet 30, main frame 40, generator 200, stator cable 2001, rotor cable 2002, box-type transformer 300, grid-connected outlet 3001, fan blade 400, transmission mechanism 500. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] Combine the following Figure 1-Figure 9 The power cabinet 10 , the converter 100 having the power cabinet 10 , and the wind power generation system 1000 having the converter 100 according to the embodiments of the present invention are described in detail.

[0034] Reference Figure 1-Figure 8 As shown, the power cabinet 10 according to the embodiment of the utility model includes a cabinet body 1 , a machine-side reactor 2 and a switching component 3 .

[0035] The cabinet 1 has an installation space, the machine-side reactor 2 is installed in the installation space, the machine-side reactor 2 has a rotor terminal 21, one end of the adapter 3 is electrically connected to the rotor terminal 21, and the other end of the adapter 3 is configured as a rotor adapter terminal 31, which is used to be electrically connected to the rotor of the generator. The distance between the rotor adapter terminal 31 and the rotor is smaller than the distance between the rotor terminal 21 and the rotor.

[0036] Optionally, the rotor of the generator is connected to a rotor cable 2002 , and the rotor adapter terminal 31 is connected to the rotor of the generator through the rotor cable 2002 .

[0037] According to the power cabinet 10 of the embodiment of the utility model, by setting the distance between the rotor adapter terminal 31 and the rotor to be smaller than the distance between the rotor terminal 21 and the rotor, the wiring length of the rotor cable 2002 can be saved, and the wiring cost can be saved.

[0038] In some embodiments of the present invention, the generator is located above the cabinet 1 , and the rotor adapter end 31 is located on the top or side wall of the cabinet 1 .

[0039] Optionally, the machine-side inductor 2 is arranged at the bottom position in the installation space, and the generator is located above the cabinet 1. In order to save the connection length between the rotor of the generator and the rotor adapter terminal 31, the rotor adapter terminal 31 can be arranged at the top position in the installation space or at a position close to the side wall, so that the distance between the rotor adapter terminal 31 and the generator rotor located at the top of the power cabinet 10 is closer, thereby shortening the length of the rotor cable 2002 between the rotor adapter terminal 31 and the generator rotor, saving costs.

[0040] That is to say, when the rotor cable 2002 connected to the rotor of the generator 200 is connected to the power cabinet 10, the rotor cable 2002 can be connected to the rotor adapter terminal 31 at the top of the cabinet 1, without having to wind the rotor cable 2002 to the bottom of the cabinet 1 and connect it to the rotor terminal 21, which is beneficial to shorten the length of the rotor cable 2002, save the rotor cable 2002, and reduce costs.

[0041] In some embodiments of the present invention, the adapter 3 is a copper busbar or an aluminum busbar or other conductive busbar, which is beneficial to saving costs.

[0042] In some embodiments of the present invention, the rotor terminal 21 is a rotor wiring copper bar or a rotor wiring aluminum bar or other conductive bar, which is beneficial to saving costs.

[0043] Optionally, the rotor adapter end 31 may be located on a cabinet wall surface of the cabinet 1 or in an installation space.

[0044] Specifically, when the generator is located above the top of the power cabinet 10, by connecting the rotor terminal 21 of the machine-side inductor 2 to the adapter 3, the rotor adapter terminal 31 at the top of the cabinet 1 can be connected to the rotor cable 2002, without the need to connect the rotor terminal 21 at the bottom of the cabinet 1 to the rotor cable 2002, thereby shortening the length of the rotor cable 2002 connected to the power cabinet 10 and saving costs.

[0045] In some embodiments not shown in the drawings, the generator may also be disposed on the side or bottom of the power cabinet 10 .

[0046] In some embodiments of the present invention, referring to Figure 3-Figure 6 As shown, the cabinet 1 includes a cabinet body 11 and a protrusion 12, the protrusion 12 is connected to the cabinet body 11, the protrusion 12 protrudes in a direction away from the cabinet body 11, and the protrusion 12 provides a receiving space for the adapter 3. In this way, the adapter 3 is partially located in the space of the protrusion 12, and the adapter 3 does not occupy too much space in the cabinet body 11, thereby not affecting the installation of parts in the cabinet body 11 too much. Optionally, the rotor adapter end 31 can be located in the space of the cabinet body 11, and can also be located in the space of the protrusion 12.

[0047] In some embodiments of the present invention, referring to Figure 3-Figure 6As shown, one side of the cabinet body 11 is the electric control cabinet connection end 13, the protrusion 12 is connected to the side of the cabinet body 11 away from the electric control cabinet connection end 13, the protrusion 12 protrudes in the direction away from the cabinet body 11, the installation space includes a first space and a second space, the first space is formed in the cabinet body 11, the second space is formed in the protrusion 12, the first space is connected to the second space, the machine-side reactor 2 is located in the first space, and the adapter 3 is partially located in the second space. In other words, the protrusion 12 provides space for the installation of the adapter 3, and the adapter 3 will not occupy too much of the first space, thereby not affecting the installation of components in the first space too much.

[0048] In some embodiments, reference Figure 3-Figure 6 As shown, the converter 100 further includes a main frame 40, and the power cabinet 10 is mounted on the main frame 40. The provision of the protrusion 12 does not increase the overall size of the main frame 40, and does not significantly increase the cost of the cabinet 1. Through the configuration of the adapter 3 and the protrusion 12, the reasonable arrangement of the adapter 3 can be achieved.

[0049] exist Figure 3-Figure 6 In the specific embodiment shown, the left side of the cabinet body 11 is the electric control cabinet connection terminal 13, the right side of the cabinet body 11 is the side panel 16, the protrusion 12 is formed on the side panel 16, the protrusion 12 protrudes to the right, and the adapter 3 is led out from the protrusion 12 on the right side of the machine-side inductor 2 to the top position of the cabinet 1.

[0050] Optionally, refer to Figure 5-Figure 6 As shown, the adapter 3 may include a transverse section 32 and a vertical section 33, one end of the transverse section 32 is connected to the rotor terminal 21, and the other end of the transverse section 32 is connected to the vertical section 33, the vertical section 33 is located in the second space, and the vertical section 33 extends to the top position of the cabinet 1.

[0051] In some embodiments of the present invention, referring to Figure 1-Figure 2 As shown, the cabinet 1 includes a side panel 16, a side space is formed between the machine-side reactor 2 and the side panel 16, and the adapter 3 is partially located in the side space. The side space provides space for the installation of the adapter 3, and the adapter 3 will not affect the installation of components outside the side space too much. Optionally, the rotor adapter end 31 can be located in the side space or in other spaces. Specifically, this part of the side space can be reserved by widening the size of the cabinet 1, and the cabinet 1 as a whole is neater and more beautiful.

[0052] Specifically, one side of the cabinet body 1 is the electric control cabinet connection end 13, and the side plate 16 is suitable for being arranged opposite to the side of the machine-side reactor 2 away from the electric control cabinet connection end 13, and the side space is formed between the side plate 16 and the machine-side reactor 2. Figure 1-Figure 2In the specific embodiment shown, the left side of the cabinet 1 is the electric control cabinet connection terminal 13, the side plate 16 is arranged opposite to the right side of the machine-side reactor 2, and the side space is located between the right side of the machine-side reactor 2 and the side plate 16. The adapter 3 may include a transverse section 32 and a vertical section 33, one end of the transverse section 32 is connected to the rotor terminal 21, and the other end of the transverse section 32 is connected to the vertical section 33, the vertical section 33 is located in the side space, and the vertical section 33 extends to the top of the cabinet 1.

[0053] In some embodiments of the present invention, referring to Figure 7-Figure 8 As shown, the cabinet 1 includes a first cabinet 14 and a second cabinet 15, an intermediate space is formed between the first cabinet 14 and the second cabinet 15, the machine-side reactor 2 is located in the first cabinet 14 or the second cabinet 15, and the adapter 3 is partially located in the intermediate space. That is to say, the machine-side reactor 2 can be arranged only in the first cabinet 14, or only in the second cabinet 15, or both in the first cabinet 14 and the second cabinet 15. By dividing the cabinet 1 into the first cabinet 14 and the second cabinet 15, the rotor cable 2002 can be introduced from the top of the cabinet 1 without increasing the size of the cabinet 1.

[0054] exist Figure 7-Figure 8 In the specific embodiment shown, the cabinet 1 includes a first sub-cabinet 14 and a second sub-cabinet 15. The first sub-cabinet 14 is located on the left side of the second sub-cabinet 15. The first sub-cabinet 14 and the second sub-cabinet 15 are both provided with a machine-side reactor 2. The adapter 3 is connected to the rotor terminal 21 of the corresponding machine-side reactor 2 and then leads out from the middle space to the top position of the cabinet 1. The adapter 3 includes a transverse section 32, a vertical section 33 and a transfer section 34. One end of the transfer section 34 is connected to the rotor terminal 21, the other end of the transfer section 34 is connected to one end of the transverse section 32, the vertical section 33 is connected to the other end of the transverse section 32, and the vertical section 33 is located in the middle space and extends to the top position of the cabinet 1. At this time, the rotor transfer terminal 31 can be located in the first sub-cabinet 14, in the second sub-cabinet 15, or in the middle space.

[0055] In some embodiments of the present invention, referring to Figure 7-Figure 8 As shown, the converter 100 further includes a main frame 40, and the first sub-cabinet 14 and the second sub-cabinet 15 are mounted on the main frame 40, so that the positions of the first sub-cabinet 14 and the second sub-cabinet 15 are relatively fixed, which facilitates the overall movement of the converter 100.

[0056] Optionally, refer to Figure 1-Figure 2 , Figure 5-Figure 8 The angle between the transverse section 32 and the vertical section 33 can be an acute angle, a right angle, or an obtuse angle.

[0057] In some embodiments of the present invention, the rotor terminal 21 is a three-phase terminal, the adapter 3 is a three-phase adapter, and each phase adapter 3 is connected to the rotor terminal 21 of the same phase. Figure 1 and Figure 7 The rotor terminal 21 is a three-phase terminal of K, L, and M. The adapter 3 is a three-phase adapter of K, L, and M.

[0058] In one embodiment, the rotor terminal 21 is a K, L, M three-phase copper bar, which is directly led out from the machine-side reactor 2. The adapter 3 is a K, L, M three-phase transfer copper bar, which transfers the K, L, M three-phase copper bar to the top of the cabinet 1.

[0059] In some embodiments of the present invention, the adapter 3 is a hard adapter. The hard adapter has high hardness, is not easy to bend, deform, or damage, and after installation, the hard adapter is not easy to interfere with other components.

[0060] Or in some other embodiments of the present invention, the adapter 3 is a soft adapter. The hardness of the soft adapter is relatively small and can be bent and deformed at will, so that the adapter 3 can be bent according to the actual space, so that the adapter 3 can better leave space for other components to avoid.

[0061] In some embodiments of the present invention, referring to Figure 1-Figure 9 , the rotor adapter terminal 31 is located at the top of the cabinet 1, the rotor terminal 21 is located at the bottom of the cabinet 1, and the rotor adapter terminal 31 is located above the rotor terminal 21. The machine-side reactor 2 is heavy, so it is arranged at the lower part of the installation space in the cabinet 1, so the rotor terminal 21 is also correspondingly located at the lower part of the cabinet 1. However, for the tower-based converter 100 placed below, the stator cable 2001 connected to the stator on the generator 200 side and the rotor cable 2002 connected to the rotor are both led down from the top to enter the converter 100. Since the rotor terminal 21 is at the lower part of the power cabinet 10, if the rotor cable 2002 is directly connected to the rotor terminal 21, each rotor cable 2002 needs to be wired 3m to 5m more to enter the lower part of the power cabinet 10 and be connected to the rotor terminal 21, which wastes the rotor cable 2002. If the machine-side reactor 2 of the converter 100 is placed on the top of the power cabinet 10, the machine-side reactor 2 will be placed at a high position, which will make assembly and maintenance difficult, and the center of gravity of the machine will be higher, resulting in unfavorable factors such as unstable transportation and hoisting. Fig. 9 As shown, the rotor cable 2002 can be connected to the rotor adapter terminal 31 on the top of the power cabinet 10, thereby saving the rotor cable 2002, and the saved length is L1, which greatly reduces the cost of the rotor cable 2002.

[0062] The rotor connection terminal 21 of the machine-side reactor 2 at the lower part of the power cabinet 10 is connected to the upper part of the cabinet body 1 of the power cabinet 10 through the adapter 3, so that the rotor cable 2002 can enter from the upper part of the power cabinet 10.

[0063] In some embodiments of the present invention, referring to Figure 1 The power cabinet 10 may further include a power cabinet door 4. The cabinet body 1 has an open end. The power cabinet door 4 is disposed at the open end of the cabinet body 1, and the power cabinet door 4 can open or close the open end of the cabinet body 1. When the power cabinet door 4 is opened, the machine-side reactor 2 is exposed, which facilitates the wiring operation between the adapter 3 and the rotor terminal 21. When the power cabinet door 4 is closed, the power cabinet door 4 can shield the machine-side reactor 2 to protect the rotor terminal 21, and can also protect other components in the installation space.

[0064] In some embodiments of the present invention, referring to Figure 1 , Figure 3 and Figure 5 As shown, the converter 100 according to another embodiment of the present invention includes the power cabinet 10 described above, and the converter 100 also includes a grid cabinet 20, the grid cabinet 20 includes a stator contactor 201, and the stator contactor 201 has a stator terminal 2011. The stator contactor 201 is arranged on the upper part of the grid cabinet 20, so as to facilitate the connection between the stator contactor 201 and the stator cable 2001 located on the top of the converter 100. Figure 1-Figure 3 and Figure 5 As shown, the stator terminal 2011 is a three-phase terminal of U, V, and W.

[0065] In some embodiments of the present invention, the stator terminal 2011 is a stator connection copper bar or a stator connection aluminum bar or other conductive bar, which is beneficial to saving costs.

[0066] The grid cabinet 20 further includes a frame circuit breaker 202, and the frame circuit breaker 202 has a grid connection terminal 2021. The stator contactor 201 is arranged at the upper part of the grid cabinet 20, and the frame circuit breaker 202 is respectively arranged at the lower part of the grid cabinet 20, so the stator connection terminal 2011 is located at the upper part of the grid cabinet 20, and the grid connection terminal 2021 is located at the lower part of the grid cabinet 20, and the two are far away from each other and do not interfere with each other.

[0067] Reference Figure 1-Figure 3 and Figure 5 As shown, the grid-connected terminal 2021 is a three-phase terminal of A, B, and C.

[0068] In some embodiments of the present invention, the grid-connected terminal 2021 is a grid-connected copper busbar or a grid-connected aluminum busbar or other conductive busbar, which is beneficial to saving costs.

[0069] In some embodiments of the present invention, referring to Figure 1-Figure 3 , Figure 5 , Figure 7-Figure 8 As shown, the converter 100 further includes a control cabinet 30 and a main frame 40. The control cabinet 30 is arranged between the power cabinet 10 and the grid cabinet 20. The power cabinet 10, the control cabinet 30 and the grid cabinet 20 are all installed on the main frame 40. Thus, the converter 100 is formed into a whole, which is convenient for overall movement and transportation of the converter 100.

[0070] Optionally, in some embodiments, the main frame 40 may only include a base frame, and the power cabinet 10, the control cabinet 30 and the grid cabinet 20 are all installed on the base frame.

[0071] Optionally, in other embodiments, the main frame 40 may include a base frame, a top frame and a connecting frame connecting the base frame and the top frame, and each of the power cabinet 10, the control cabinet 30 and the grid-connected cabinet 20 may be selectively installed on at least one of the base frame, the top frame and the connecting frame.

[0072] In some embodiments of the present invention, referring to Fig. 9 As shown, the converter 100 is a tower-based converter 100, the generator 200 is located above the converter 100, and the stator cable 2001 and the rotor cable 2002 on the generator 200 side are both led down from the top into the converter 100. By connecting the rotor cable 2002 to the rotor adapter terminal 31 on the top of the power cabinet 10, the length of the rotor cable 2002 can be saved, thereby greatly reducing the cost of the rotor cable 2002.

[0073] According to the converter 100 of the embodiment of the utility model, the power cabinet 10 thereof can save the wiring length of the rotor cable 2002 and save the wiring cost by setting the distance between the rotor adapter terminal 31 and the rotor to be smaller than the distance between the rotor terminal 21 and the rotor.

[0074] Reference Fig. 9 As shown, a wind power generation system 1000 according to another embodiment of the utility model includes a generator 200 and the above-mentioned converter 100, the generator 200 has a stator and a rotor, the stator is connected to the stator terminal 2011 through a stator cable 2001, and the rotor is connected to the rotor adapter terminal 31 through a rotor cable 2002. The stator cable 2001 is suitable for connecting the stator to the stator terminal 2011, and the rotor cable 2002 is suitable for connecting the rotor to the rotor adapter terminal 31. Therefore, the converter 100 is connected to the rotor of the generator 200 through the machine-side reactor 2, and the converter 100 is connected to the stator of the generator 200 through the stator contactor 201.

[0075] In some embodiments of the present invention, referring to Fig. 9As shown, the wind power generation system 1000 further includes a box-type transformer 300, which has a grid-connected outgoing line 3001, which is suitable for connecting to the grid-connected terminal 2021. Thus, the converter 100 is connected to the grid through the grid-side frame circuit breaker 202 and the box-type transformer 300.

[0076] According to the wind power generation system 1000 of the embodiment of the utility model, the power cabinet 10 can save the wiring length of the rotor cable 2002 and save wiring costs by setting the distance between the rotor adapter terminal 31 and the rotor to be smaller than the distance between the rotor terminal 21 and the rotor.

[0077] In some embodiments of the present invention, referring to Fig. 9 As shown, the wind power generation system 1000 also includes a fan blade 400, and the fan blade 400 is connected to the generator 200. The wind drives the fan blade 400 to rotate, and the fan blade 400 drives the generator 200 to generate electricity when rotating, that is, the mechanical energy of the fan blade 400 can be converted into the electrical energy of the generator 200. The converter 100 is connected to the generator 200, so that the electrical energy of the generator 200 can be processed, such as frequency conversion, voltage conversion, etc.

[0078] Optionally, the wind blades 400 and the generator 200 may be directly connected.

[0079] Alternatively, the wind blade 400 and the generator 200 may be indirectly connected, such as Fig. 9 As shown, the wind power generation system 1000 further includes a transmission mechanism 500, and the fan blade 400 is connected to the generator 200 through the transmission mechanism 500. When the wind drives the fan blade 400 to rotate, the mechanical energy of the fan blade 400 is transmitted to the generator 200 after being transmitted by the transmission mechanism 500. The transmission mechanism 500 may be a gear transmission mechanism, and the fan blade 400, the transmission mechanism 500 and the generator 200 may be integrated into one body, for example, the transmission mechanism 500 and the generator 200 are integrated into the cabin, and the fan blade 400 is installed outside the cabin to form a whole.

[0080] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0081] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0083] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A power cabinet, characterized in that: include: A cabinet (1), wherein the cabinet (1) has an installation space; A machine-side reactor (2) installed in the installation space, wherein the machine-side reactor (2) has a rotor connection terminal (21); An adapter (3), one end of the adapter (3) being electrically connected to the rotor terminal (21), and the other end of the adapter (3) being configured as a rotor adapter end (31), and the rotor adapter end (31) being used to be electrically connected to a rotor of a generator; Wherein, the distance between the rotor adapter terminal (31) and the rotor is smaller than the distance between the rotor connection terminal (21) and the rotor.

2. The power cabinet according to claim 1, characterized in that: The generator is located above the cabinet (1), and the rotor adapter end (31) is located on the top or side wall of the cabinet (1).

3. The power cabinet according to claim 1 or 2, characterized in that: The cabinet (1) comprises a cabinet body (11) and a raised portion (12) connected to the cabinet body (11); the raised portion (12) protrudes in a direction away from the cabinet body (11); and the raised portion (12) provides a receiving space for the adapter (3).

4. The power cabinet according to claim 1, characterized in that: The cabinet (1) comprises a side plate (16), a side space is formed between the machine-side reactor (2) and the side plate (16), and the adapter (3) is partially located in the side space.

5. The power cabinet according to claim 1, characterized in that: The cabinet (1) comprises a first sub-cabinet (14) and a second sub-cabinet (15), an intermediate space is formed between the first sub-cabinet (14) and the second sub-cabinet (15), the machine-side reactor (2) is located in the first sub-cabinet (14) or the second sub-cabinet (15), and the adapter (3) is partially located in the intermediate space.

6. The power cabinet according to claim 1, characterized in that: The rotor terminal (21) is a three-phase terminal, the adapter (3) is a three-phase adapter, and each phase adapter (3) is connected to the rotor terminal (21) of the same phase.

7. The power cabinet according to claim 1, characterized in that: The adapter (3) is a hard adapter; or, the adapter (3) is a soft adapter.

8. A converter, characterized in that: It comprises a power cabinet as described in any one of claims 1 to 7, and also comprises a power cabinet (20), wherein the power cabinet (20) is located on one side of the power cabinet (10), and the power cabinet (20) comprises a stator contactor (201), and the stator contactor (201) has a stator terminal (2011).

9. A wind power generation system, characterized in that: include: The converter according to claim 8; A generator (200) comprises a stator and a rotor, wherein the stator is connected to the stator terminal (2011) via a stator cable (2001), and the rotor is connected to the rotor adapter terminal (31) via a rotor cable (2002).

10. The wind power generation system according to claim 9, characterized in that: The wind power generation system further comprises a box-type transformer (300), the box-type transformer (300) having a grid-connected outgoing line (3001), the grid-connected cabinet (20) further comprises a frame circuit breaker (202), the frame circuit breaker (202) having a grid-connected wiring terminal (2021), and the grid-connected outgoing line (3001) is suitable for being connected to the grid-connected wiring terminal (2021).

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