Prefabricated transformer substation

Abstract

The utility model discloses a preassembled transformer substation, which relates to the technical field of transformer substations and comprises a bottom plate, a high-voltage box body, a transformer box body and a low-voltage box body are mounted on the bottom plate and arranged in a shape like a Chinese character'mu ', and a high-voltage cabinet and a low-voltage cabinet are respectively arranged in the high-voltage box body and the low-voltage box body. A high-voltage plug connected with a high-voltage cabinet cable is arranged in the high-voltage box body, a high-voltage plug base matched with the high-voltage plug in an inserted mode is arranged on the box wall of the transformer box body, a transformer is arranged in the transformer box body and comprises a high-voltage coil and a low-voltage coil, the high-voltage coil is connected to the high-voltage plug base, and the low-voltage coil is connected to the low-voltage plug base. The low-voltage coil is connected to a low-voltage cabinet through a double-split low-voltage sleeve. The high-voltage plugging base is connected with the high-voltage plugging head in a matched mode, transportation and rapid preassembling are facilitated, the double-split low-voltage sleeve reduces current of all low-voltage lines, heat productivity is reduced, and operation hidden dangers are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to substation technical field especially relates to a prepackaged substation. BACKGROUND

[0002] The conventional substation is mostly integrated design, and the substation usually sets up high voltage room, low voltage room and transformer room in the substation box body, installs high voltage cabinet, low voltage cabinet and transformer in high voltage room, low voltage room and transformer room respectively, and the transformer is connected to high voltage cabinet and low voltage cabinet through high voltage bushing and low voltage bushing respectively. The integrated design substation is usually large in size, which leads to large floor area and inconvenient transportation, and with the continuous increase of substation capacity, the heat generation of transformer gradually increases, which has safety hazards. SUMMARY

[0003] The utility model discloses a prepackaged substation, which aims to solve the technical problems of large size, large floor area, inconvenient transportation and safety hazards of the integrated design substation in the prior art.

[0004] To achieve the above-mentioned purpose, the prepackaged substation provided by the utility model comprises a bottom plate, a high voltage box body, a transformer box body and a low voltage box body are installed on the bottom plate, the high voltage box body, the transformer box body and the low voltage box body are arranged in the shape of "eye", high voltage cabinet and low voltage cabinet are respectively arranged in the high voltage box body and the low voltage box body, high voltage plug-in connector connected with the high voltage cabinet cable is arranged in the high voltage box body, high voltage plug-in base matched with the high voltage plug-in connector is arranged on the box wall of the transformer box body, transformer is arranged in the transformer box body, the transformer comprises high voltage coil and low voltage coil, the high voltage coil is connected to the high voltage plug-in base, and the low voltage coil is connected to the low voltage cabinet through double split low voltage bushing.

[0005] In an embodiment, the low voltage cabinet comprises two low voltage sub-cabinets, and the low voltage coil is connected to the two low voltage sub-cabinets through the double split low voltage bushing.

[0006] In an embodiment, low voltage frame circuit breaker is arranged in each low voltage sub-cabinet, the upper opening of the low voltage frame circuit breaker is connected to the corresponding low voltage bushing through bus, and the lower opening of the low voltage frame circuit breaker is hung on incoming line cable through copper bus bar.

[0007] In an embodiment, the number of low voltage coils of the transformer is three-phase three, and the low voltage coil of each phase in the transformer is connected to two low voltage sub-cabinets through the double split low voltage bushing.

[0008] In an embodiment, the transformer further comprises an elliptical core, the low-voltage coil is arranged outside the core, and the high-voltage coil is arranged outside the low-voltage coil.

[0009] In an embodiment, the high-voltage cabinet and the low-voltage cabinet are respectively arranged on two sides of the transformer cabinet along a first horizontal direction, and radiators are arranged on two sides of the transformer cabinet along a second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular to each other.

[0010] In an embodiment, a visual component cabinet is arranged outside a cabinet wall of the transformer cabinet along the second horizontal direction, the visual component cabinet is arranged away from the radiators, and a no-excitation tap changer is arranged in the visual component cabinet.

[0011] In an embodiment, a high-voltage surge arrester is arranged in the high-voltage cabinet, and the high-voltage surge arrester is electrically connected to the high-voltage plug-in base.

[0012] In an embodiment, a temperature and humidity controller is arranged in the low-voltage cabinet.

[0013] In an embodiment, the high-voltage coil and the low-voltage coil are both aluminum coils.

[0014] The preassembled transformer substation disclosed in the utility model is arranged in a "eye" shape on a bottom plate by arranging a high-voltage cabinet, a transformer cabinet and a low-voltage cabinet, high-voltage cabinets, transformers and low-voltage cabinets are respectively arranged in the high-voltage cabinet, the transformer cabinet and the low-voltage cabinet, the preassembled transformer substation is modularly designed, the transformer cabinet and the high-voltage cabinet are connected by plug-in cooperation of the high-voltage plug-in base and the high-voltage plug, the connection of the transformer cabinet and the high-voltage cabinet is convenient, thereby facilitating transportation and rapid preassembly of the preassembled transformer substation; and since a high-voltage bushing does not need to be arranged between the transformer cabinet and the high-voltage cabinet, the connection distance of the high-voltage cabinet and the transformer cabinet can be shortened, the volume of the preassembled transformer substation is reduced, and the occupied area is reduced. Double-split low-voltage bushings are arranged in the transformer cabinet corresponding to the low-voltage coil, the low-voltage coil is connected to the low-voltage cabinet through two low-voltage lines, the current borne by each low-voltage line is effectively reduced, thereby reducing eddy current loss caused by the current, reducing the heat generation of the preassembled transformer substation, and reducing operation risks. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative labor.

[0016] Figure 1 The utility model provides a prepackaged substation one embodiment's overhead structure schematic diagram for the utility model provides a prepackaged substation one embodiment's overhead structure schematic diagram.

[0017] Figure 2 The utility model provides a prepackaged substation one embodiment's side view structure schematic diagram for the utility model provides a prepackaged substation one embodiment's side view structure schematic diagram.

[0018] Explanation of the attached drawings:

[0019] 10, bottom plate;20, high voltage box body;21, high voltage plug;22, high voltage plug base;30, transformer box body;31, transformer;311, iron core;312, low voltage coil;313, high voltage coil;40, low voltage box body;41, low voltage subcabinet;50, radiator;60, visual component box.

[0020] The utility model discloses the realization, functional characteristics and advantages will combine embodiment, refer to the further description of the drawings. Specific implementation

[0021] The technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0022] It should be noted that if the embodiment of the utility model has the directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition and the like between the components in a certain posture, and if the certain posture changes, the directionality indication also changes accordingly.

[0023] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the description of "first", "second" and the like is only for the description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appears in the whole text, which includes three parallel schemes, for example, "A and / or B", which includes A scheme, or B scheme, or A and B scheme. In addition, the technical schemes of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, when the combination of technical schemes appears contradictory or unachievable, it should be considered that the combination of technical schemes does not exist, and is not within the protection scope required by the utility model.

[0024] The description of the directions such as "up", "down", "front", "back", "left" and "right" in the utility model is based on the directions shown in the drawings as a reference, and is only used to explain the relative position relationship between the components in the posture shown in the drawings. Figure 1 The description of the directions such as "up", "down", "front", "back", "left" and "right" in the utility model is based on the directions shown in the drawings as a reference, and is only used to explain the relative position relationship between the components in the posture shown in the drawings. Figure 1 The description of the directions such as "up", "down", "front", "back", "left" and "right" in the utility model is based on the directions shown in the drawings as a reference, and is only used to explain the relative position relationship between the components in the posture shown in the drawings.

[0025] The existing integrated design substation is generally large in size, resulting in a large occupation area and inconvenient transportation, and with the continuous increase of the capacity of the substation, the heat generation of the transformer gradually increases, the heat dissipation in the box body of the substation is difficult, and there is a safety hazard.

[0026] The utility model provides a kind of prefabricated substation, including bottom plate 10, high voltage box body 20, transformer box body 30 and low voltage box body 40 are installed on bottom plate 10, high voltage box body 20, transformer box body 30 and low voltage box body 40 are arranged in "eye" shape, high voltage box body 20 and low voltage box body 40 are respectively provided with high voltage cabinet and low voltage cabinet, high voltage box body 20 is provided with high voltage plug 21 connected with high voltage cabinet cable, high voltage plug-in base 22 of high voltage plug 21 is inserted into the cooperation of the box wall of transformer box body 30, transformer 31 is provided in transformer box body 30, transformer 31 includes high voltage coil 313 and low voltage coil 312, high voltage coil 313 is connected to high voltage plug-in base 22, low voltage coil 312 is connected to low voltage cabinet by double split low voltage bushing.

[0027] Please refer to Figure 1 High voltage box body 20, transformer box body 30 and low voltage box body 40 are arranged on bottom plate 10 with interval, and the left and right sides of transformer box body 30 form high voltage side and low voltage side respectively, and the high voltage side faces high voltage box body 20, and the low voltage side faces low voltage box body 40. The high voltage side of transformer box body 30 is inserted into the cooperation of high voltage plug 21 on the box wall of high voltage chamber box through high voltage plug-in base 22 arranged on the box wall, to connect high voltage line into high voltage box body 20 and connect to high voltage cabinet;Low voltage side is inserted into low voltage box body 40 through double split low voltage bushing, to connect low voltage line into low voltage box body 40 and connect to low voltage cabinet. The number of high voltage coil 313 and low voltage coil 312 can be multiple, multiple high voltage coil 313 are connected to high voltage plug-in base 22, and multiple low voltage coil 312 are connected to low voltage cabinet by double split low voltage bushing.

[0028] The utility model discloses a prefabricated transformer substation, through with high pressure box 20, transformer box 30 and low voltage box 40 are arranged on the bottom plate 10 according to the " eye " shape, set up high voltage cabinet, transformer 31 and low voltage cabinet in high pressure box 20, transformer box 30 and low voltage box 40 respectively, the prefabricated transformer substation modular design is connected through high pressure plug -in base 22 and high pressure plug -in head 21, and the prefabricated transformer substation is convenient for transportation and quick prefabrication.

[0029] In an embodiment, the low voltage cabinet includes two low voltage sub-cabinets 41, and the low voltage coil 312 is connected to the two low voltage sub-cabinets 41 through the double-split low voltage bushings. Figure 1 The two low voltage sub-cabinets 41 are arranged in the low voltage cabinet in front of and behind each other, and the transformer 31 is connected to the two low voltage sub-cabinets 41 through two low voltage lines, thereby achieving balanced distribution of loads and avoiding overloading of the low voltage cabinet, and improving the stability of the low voltage cabinet.

[0030] In an embodiment, each low voltage sub-cabinet 41 is provided with a low voltage frame circuit breaker, the upper opening of the low voltage frame circuit breaker is connected to the corresponding low voltage bushing through a bus, and the lower opening of the low voltage frame circuit breaker is hung on the incoming line cable through a copper bus bar.

[0031] It can be explained that two low voltage frame circuit breakers are arranged in each of the two low voltage sub-cabinets 41, and each low voltage bushing is connected to the low voltage frame circuit breaker through a bus, so that each low voltage frame circuit breaker controls the on-off of the corresponding low voltage line. Each low voltage line is hung on the incoming line cable through the corresponding copper bus bar after passing through the corresponding low voltage frame circuit breaker, thereby being connected to the external power grid or load through the incoming line cable, and ensuring smooth output of electric energy. The low voltage frame circuit breaker provides overload and short circuit protection for the low voltage line, and is designed in a modular manner, thereby facilitating quick prefabrication of the low voltage cabinet.

[0032] In an embodiment, the number of low voltage coils 312 of the transformer 31 is three, and each phase of the low voltage coil 312 in the transformer 31 is connected to the two low voltage sub-cabinets 41 through the double-split low voltage bushings.

[0033] It should be noted that the high-voltage side of the transformer box 30 is provided with three high-voltage plug-in sockets 22, and the three high-voltage coils 313 of the three-phase transformer 31 are respectively connected to the three high-voltage plug-in sockets 22, and the box wall of the high-voltage box 20 is provided with three high-voltage plug-in heads 21 corresponding to the three high-voltage plug-in sockets 22; the three low-voltage coils 312 of the three-phase transformer 31 are respectively connected to two low-voltage sub-cabinets 41 through three double-split low-voltage bushings, and the two low-voltage bushings of each phase are connected to the same transformer 31. While meeting the larger capacity demand of the prefabricated substation, it ensures the uniform load distribution of each transformer 31, reduces the heat generation inside the transformer box 30 and the low-voltage box 40, and improves the safety performance of the prefabricated substation. It should be noted that one of the low-voltage sub-cabinets 41 is provided with joints X1a, X2a, X3a, X0a corresponding to the three phases of the transformer 31, and the other low-voltage sub-cabinet 41 is provided with joints X1b, X2b, X3b, X0b corresponding to the three phases of the transformer 31, and X0a, X1a, X2a, X3a are respectively arranged corresponding to X0b, X1b, X2b, X3b.

[0034] In an embodiment, the transformer 31 further comprises an elliptical core 311, and the low-voltage coil 312 is wound outside the core 311, and the high-voltage coil 313 is wound outside the low-voltage coil 312.

[0035] It can be understood that when the number of low-voltage coils 312 is multiple, the multiple low-voltage coils 312 are wound side by side outside the core 311, which helps to reduce the electromagnetic interference between the multiple low-voltage coils 312 and improve the heat dissipation efficiency of the low-voltage coil 312. The elliptical core 311 can reduce the magnetic resistance in the magnetic circuit and help to reduce the hysteresis loss and eddy current loss of the core 311. The high-voltage coil 313 is wound outside the low-voltage coil 312, which helps to reduce the coupling between the high-voltage coil 313 and the low-voltage coil 312, thereby reducing noise and vibration.

[0036] In an embodiment, the high-voltage box 20 and the low-voltage box 40 are respectively installed on both sides of the transformer box 30 along a first horizontal direction, and the transformer box 30 is installed with a heat sink 50 along a second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular to each other.

[0037] Please refer to Figure 1 and Figure 2 , Figure 1 The left-right direction in Figure 1The front-rear direction in the transformer box 30 is the second horizontal direction. The high-voltage box 20 and the low-voltage box 40 are respectively installed on both sides of the transformer box 30 along the length direction, so that the structure of the prefabricated transformer substation is compact, and the prefabrication and maintenance are facilitated. The heat sink 50 is installed on both sides of the transformer box 30 along the width direction, so that the heat sink 50 does not interfere with the arrangement of the high-voltage box 20 and the low-voltage box 40, and the contact area between the heat sink 50 and the transformer box 30 is increased as much as possible, and the heat dissipation effect is improved.

[0038] In an embodiment, a visual component box 60 is externally hung on one side wall of the transformer box 30 along the second horizontal direction. The visual component box 60 is arranged away from the heat sink 50. A no-field tap changer is arranged in the visual component box 60.

[0039] Further, the visual box component is hung on one side of the transformer box 30 along the width direction, so that the operation of the transformer box 30 can be monitored and operated. The no-field tap changer is arranged in the visual component box 60, so that the output voltage of the transformer 31 can be adjusted without interrupting the power supply, and the flexibility and safety of the operation are improved.

[0040] In an embodiment, a high-voltage arrester is arranged in the high-voltage box 20 and is electrically connected to the high-voltage plug-in base 22. It can be explained that the high-voltage arrester is connected in series with the high-voltage line. The high-voltage arrester can protect the equipment from lightning strikes or other transient overvoltages. When high-voltage current passes through the high-voltage line, the high-voltage arrester can quickly respond to avoid damage to the equipment caused by voltage peaks. The high-voltage arrester can use the high-voltage arrester device in the prior art.

[0041] In an embodiment, a temperature and humidity controller is arranged in the low-voltage cabinet. The temperature and humidity controller is arranged to monitor the temperature and humidity conditions in the low-voltage cabinet in real time, so as to monitor the heating condition in the low-voltage cabinet.

[0042] In an embodiment, the high-voltage coil 313 and the low-voltage coil 312 are both aluminum coils. The aluminum coil has good electrical conductivity and a lighter weight than the traditional copper coil, so as to effectively reduce the weight of the prefabricated transformer substation, and facilitate the transportation and prefabrication of the prefabricated transformer substation.

[0043] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields within the technical concept of the present application and the contents of the present application are included in the patent protection scope of the present application.

Claims

1. A prepackaged electrical substation, characterized in that, The utility model relates to a high -low voltage switch cabinet, including bottom plate, install high pressure box, transformer box and low voltage box on the bottom plate, high pressure box, transformer box and low voltage box are arranged in the shape of '' eye'', high pressure box and low voltage box are provided with high voltage cabinet and low voltage cabinet respectively, high pressure box is provided with high pressure plug -in head connected with high voltage cabinet cable, the box wall of transformer box is provided with high pressure plug -in base that inserts with high pressure plug -in head, transformer is provided in transformer box, and transformer includes high voltage coil and low voltage coil, high voltage coil is connected to high pressure plug -in base, and low voltage coil is connected to low voltage cabinet through double split low voltage bushing.

2. The prepackaged electrical transformer station of claim 1, wherein, The low voltage cabinet includes two low voltage sub-cabinets, and the low voltage coil is connected to the two low voltage sub-cabinets through the double split low voltage bushing.

3. The prepackaged electrical transformer station of claim 2, wherein, Each low voltage sub-cabinet is provided with a low voltage frame circuit breaker, the upper opening of the low voltage frame circuit breaker is connected to the corresponding low voltage bushing through a bus, and the lower opening of the low voltage frame circuit breaker is hung on an incoming cable through a copper bus bar.

4. The prepackaged electrical transformer station of claim 2, wherein, The number of low voltage coils of the transformer is three, and each phase of the low voltage coil of the transformer is connected to two low voltage sub-cabinets through the double split low voltage bushing.

5. The prepackaged electrical transformer station of claim 1, wherein, The transformer further includes an elliptical core, the low voltage coil is arranged outside the core, and the high voltage coil is arranged outside the low voltage coil.

6. The prepackaged electrical transformer station of any one of claims 1 to 5, wherein, The high voltage box and the low voltage box are respectively installed on both sides of the transformer box along a first horizontal direction, and a radiator is installed on both sides of the transformer box along a second horizontal direction; the first horizontal direction and the second horizontal direction are perpendicular to each other.

7. The prepackaged electrical transformer station of claim 6, wherein, A visual component box is externally hung on one side wall of the transformer box along the second horizontal direction, the visual component box is arranged away from the radiator, and a no-excitation tap changer is arranged in the visual component box.

8. The prepackaged electrical transformer station of any one of claims 1 to 5, wherein, A high voltage arrester is arranged in the high voltage box, and the high voltage arrester is electrically connected to the high voltage plug-in base.

9. The prepackaged electrical transformer station of any one of claims 1 to 5, wherein, A temperature and humidity controller is arranged in the low voltage cabinet.

10. The prepackaged electrical transformer station of any one of claims 1 to 5, wherein, The high voltage coil and the low voltage coil are both aluminum coils.

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