Pole-mounted small transformer substation

Abstract

The utility model discloses a pole-mounted miniature transformer station, which relates to the technical field of transformer stations, and comprises a ground main body, telegraph poles, wiring cross arms, a support frame and a box-type transformer station main body, two groups of telegraph poles are arranged in the ground main body, the wiring cross arms are arranged on the outer sides of the telegraph poles, and the support frame is arranged in the box-type transformer station main body. A supporting frame is jointly installed between the two telegraph poles. In the installation process of the pole-mounted small-sized transformer substation, the bottom ends of the two groups of telegraph poles can be buried in the ground main body, and a transformer, a ring main unit and a low-voltage cabinet can be installed in the box-type transformer substation main body through the box-type transformer substation main body, so that the installation problem of the box-type transformer substation in narrow spaces such as commercial centralized places and roads is solved; the box-type transformer substation main body is compact in structure, the automatic reclosing circuit breaker in the box-type transformer substation main body can be automatically recovered after power failure, manual power transmission is not needed, and replacement and maintenance of the automatic reclosing circuit breaker can be achieved without power failure.

Description

Technical Field

[0001] The utility model relates to the technical field of substations, in particular to a pole-mounted small substation. Background Technique

[0002] A box-type substation, also called a prefabricated substation, is a compact complete power distribution device that combines high-voltage switchgear, distribution transformers, low-voltage switchgear, electric energy metering devices, reactive power compensation devices, etc. according to a certain wiring scheme in one or several boxes. It is applicable to the rated voltage 10 / 0.4KV three-phase AC system for power transmission and distribution. It is especially suitable for urban network construction and transformation. It is a brand-new substation that emerged after the civil substation. The box-type substation is applicable to mines, factories and enterprises, oil and gas fields, and wind power stations. It replaces the original civil power distribution room and the power distribution station becomes a new type of complete power transformation and distribution device. There are still certain defects in the existing substations during use.

[0003] In the construction of existing substations, it is necessary to build a box substation foundation on the ground and carry out basic civil engineering. This method is likely to occupy road resources and ground resources. Especially in the commercial concentrated areas where every inch of land is precious, it is difficult to install the box-type substation, which is likely to waste and occupy ground resources. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pole-mounted small substation to solve the problem that the existing substations in the current market are likely to waste and occupy ground resources proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A pole-mounted small substation, including: a ground main body, a telegraph pole, a wiring cross arm, a support frame, and a box-type substation main body. Two telegraph poles are installed inside the ground main body. A wiring cross arm is installed on the outer side of the telegraph pole. A support frame is jointly installed between the two telegraph poles. The box-type substation main body is installed on the top of the support frame. A transformer is installed inside the box-type substation main body. A ring main unit and a low-voltage cabinet are respectively installed inside the box-type substation main body near the transformer. An automatic reclosing circuit breaker and a bus adapter are respectively installed inside the low-voltage cabinet. A grounding flat iron is jointly connected between the box-type substation main body and the ground main body. A channel steel is welded at the bottom of the box-type substation main body.

[0006] Preferably, a double-headed screw rod penetrates through the inside of the support frame, and nuts are threadedly connected to the outer side of the double-headed screw rod.

[0007] Preferably, fixed angle steels are arranged at the bottom of the support frame, and hoop irons are installed on the outer sides of the two telegraph poles.

[0008] Preferably, the channel steel is U-shaped, and two groups of hoop fasteners are symmetrically arranged about the center of the utility pole.

[0009] Preferably, a slot hole matching the size of the double-headed screw is formed inside the support frame.

[0010] Preferably, the fixing angle steel is L-shaped.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: During the installation of the pole-mounted small substation, the bottoms of two groups of utility poles can be first buried inside the ground main body, and at the same time, hoop fasteners can be installed at a height of 2.5 meters from the surface of the ground main body of the two groups of utility poles. At this time, a support frame can be installed at the top surface position of the hoop fastener and fixed with bolts. A hoisting device can be used to hoist the box-type substation main body onto the support frame, so that the channel steel is located on the surface of the support frame. Then, one end of the double-headed screw penetrates through the fixing angle steel and is inserted into the channel steel along the slot hole on the support frame. At this time, nuts can be used to thread-fix both ends of the double-headed screw, thereby installing the box-type substation main body on the support frame. At the same time, after the automatic reclosing circuit breaker trips due to some fault, it can be automatically reclosed by using a mechanical device or a relay automatic device, and there is no need for a wire connection between the automatic reclosing circuit breaker and the busbar adapter. The automatic reclosing circuit breaker can be directly inserted into the conductive bar of the busbar adapter. Transformers, ring main units, and low-voltage cabinets can be installed inside the box-type substation main body, thus solving the installation problem of box-type substations in narrow spaces such as commercial concentration areas and roads. Moreover, the box-type substation main body has a compact structure and a small floor area, and can realize functions such as remote automatic control, information collection, on-line detection, and automatic reactive power compensation, which is beneficial for use and maintenance. At the same time, the automatic reclosing circuit breaker inside the box-type substation main body can be automatically restored after a power outage without manual power supply, and the replacement and maintenance of the automatic reclosing circuit breaker can be realized without power interruption. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view structural schematic diagram of the present utility model;

[0013] Figure 2 is the front view sectional structural schematic diagram of the box-type substation main body of the present utility model;

[0014] Figure 3 For the present utility model Figure 2 is the enlarged structural schematic diagram of A in

[0015] In the figure: 1. Ground main body; 2. Electric pole; 3. Wiring cross arm; 4. Support frame; 5. Box-type substation main body; 6. Transformer; 7. Ring main unit; 8. Low-voltage switchgear; 9. Automatic reclosing circuit breaker; 10. Busbar adapter; 11. Earthing flat iron; 12. Channel steel; 13. Double-headed screw; 14. Nut; 15. Fixed angle steel; 16. Hoop. Specific implementation manner

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figure 1 、 Figure 2 and Figure 3 It can be seen that the present invention provides a technical solution: a pole-mounted small substation, including: a ground main body 1, an electric pole 2, a wiring cross arm 3, a support frame 4 and a box-type substation main body 5. Two groups of electric poles 2 are installed inside the ground main body 1. A wiring cross arm 3 is installed on the outer side of the electric pole 2. A support frame 4 is jointly installed between the two electric poles 2. The box-type substation main body 5 is installed on the top of the support frame 4. The transformer 6 is installed inside the box-type substation main body 5. A ring main unit 7 and a low-voltage switchgear 8 are respectively installed inside the box-type substation main body 5 near the transformer 6. An automatic reclosing circuit breaker 9 and a busbar adapter 10 are respectively installed inside the low-voltage switchgear 8. An earthing flat iron 11 is jointly connected between the box-type substation main body 5 and the ground main body 1. Channel steel 12 is welded to the bottom of the box-type substation main body 5. A double-headed screw 13 penetrates through the inside of the support frame 4. A nut 14 is threadedly connected to the outer side of the double-headed screw 13. Fixed angle steel 15 is arranged at the bottom of the support frame 4. Hoops 16 are installed on the outer sides of both electric poles 2. Fixed angle steel 15 is arranged at the bottom of the support frame 4. Hoops 16 are installed on the outer sides of both electric poles 2. The channel steel 12 is in a U shape. Two groups of hoops 16 are symmetrically arranged about the center of the electric pole 2. A slot hole matching the size of the double-headed screw 13 is opened inside the support frame 4. Four groups of channel steel 12 are arranged at the bottom of the box-type substation main body 5.

[0018] During specific implementation in the installation process, the bottoms of the two groups of electric poles 2 can be first buried inside the ground main body 1, and the buried part of the bottom of the electric pole 2 is not less than 2.5 meters. At the same time, a hoop 16 is installed at a height of 2.5 meters from the surface of the ground main body 1 for the two groups of electric poles 2. At this time, a support frame 4 can be installed at the top surface position of the hoop 16 and fixed with bolts. A hoisting device can be used to hoist the box-type substation main body 5 onto the support frame 4, so that the channel steel 12 is located on the surface of the support frame 4, and the fixing angle steel 15 is installed at the bottom of the support frame 4. Then, one end of the double-headed screw 13 penetrates through the fixing angle steel 15 and is inserted into the channel steel 12 along the slot holes on the support frame 4. At this time, nuts 14 can be used to thread-fix both ends of the double-headed screw 13, thereby installing the box-type substation main body 5 on the support frame 4. The box-type substation main body 5 is connected to the ground main body 1 using a grounding flat iron 11, thereby ensuring the electrical safety of the box-type substation main body 5, and the installation position of the box-type substation main body 5 is reliable and firm, not prone to shaking. At the same time, after the automatic reclosing circuit breaker 9 trips due to some fault, a mechanical device or a relay automatic device is used to make it automatically reclose. For example, if the fault that occurs in the power system is temporary, after the circuit breaker trips and cuts off the power supply by the relay protection device, it will be automatically reclosed after a predetermined time. If the fault has been automatically eliminated, the line will resume power supply. If the fault is persistent, the circuit breaker will trip again and will not reclose. Moreover, there is no need for a wire connection between the automatic reclosing circuit breaker 9 and the bus adapter 10. The automatic reclosing circuit breaker 9 can be directly plugged onto the conductive rod of the bus adapter 10.

[0019] Refer to Figure 1 、 Figure 2 and Figure 3 It can be seen that through the box-type substation main body 5, the transformer 6, the ring main unit 7, and the low-voltage cabinet 8 can be installed inside it, thus solving the installation problem of box-type substations in narrow spaces such as commercial centers and roads. Moreover, the box-type substation main body 5 has a compact structure and a small floor area, and can realize functions such as remote automatic control, information collection, on-line detection, and automatic reactive power compensation, which is beneficial for use and maintenance. At the same time, the automatic reclosing circuit breaker 9 inside the box-type substation main body 5 can automatically resume power after a power outage without the need for manual power supply, and the replacement and maintenance of the automatic reclosing circuit breaker 9 can be realized without power interruption.

[0020] In summary, when using the pole-mounted small substation, first bury the bottoms of the two groups of utility poles 2 inside the ground main body 1, and the buried part of the bottom of the utility pole 2 is not less than 2.5 meters. At the same time, install the hoop 16 at a height of 2.5 meters from the surface of the ground main body 1 for the two groups of utility poles 2. At this time, the support frame 4 can be installed at the top surface position of the hoop 16 and fixed with bolts. The hoisting equipment can be used to hoist the box-type substation main body 5 onto the support frame 4, so that the channel steel 12 is located on the surface of the support frame 4, and the fixed angle steel 15 is installed at the bottom of the support frame 4. The transformer 6, the ring main unit 7 and the low-voltage cabinet 8 can be installed inside the box-type substation main body 5, thus solving the installation problem of the box-type substation in narrow spaces such as commercial concentration areas and roads. Moreover, the box-type substation main body 5 has a compact structure and a small floor area, and can realize functions such as remote automatic control, information collection, on-line detection, and automatic reactive power compensation, which is beneficial to use and maintenance. At the same time, the automatic reclosing circuit breaker 9 inside the box-type substation main body 5 can automatically recover after a power outage without manual power supply, and the replacement and maintenance of the automatic reclosing circuit breaker 9 can be realized without power interruption. The content not described in detail in this description belongs to the prior art well-known to those skilled in the art.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A small pole-mounted substation, comprising: The ground body (1), the electric pole (2), the wiring cross arm (3), the support frame (4) and the box-type substation body (5) are characterized by: Two groups of electric poles (2) are installed inside the ground body (1), a wiring cross arm (3) is installed on the outside of the electric poles (2), a support frame (4) is installed between the two electric poles (2), and a box-type substation body (5) is installed on the top of the support frame (4); The transformer (6) is installed inside the box-type substation body (5); a ring network cabinet (7) and a low-voltage cabinet (8) are installed inside the box-type substation body (5) near the transformer (6); an automatic reclosing circuit breaker (9) and a busbar adapter (10) are installed inside the low-voltage cabinet (8); a grounding flat iron (11) is commonly connected between the box-type substation body (5) and the ground body (1); and a channel steel (12) is welded to the bottom of the box-type substation body (5).

2. A small pole-mounted substation according to claim 1, characterized in that: A double-headed screw (13) is connected through the interior of the support frame (4), and a nut (14) is threadedly connected to the outer side of the double-headed screw (13).

3. A small pole-mounted substation according to claim 2, characterized in that: A fixed angle steel (15) is provided at the bottom of the support frame (4), and a clamp (16) is installed on the outer sides of the two electric poles (2).

4. A small pole-mounted substation according to claim 3, characterized in that: The shape of the channel steel (12) is U-shaped, and two groups of the clamps (16) are symmetrically arranged about the center of the electric pole (2).

5. A small pole-mounted substation according to claim 2, characterized in that: The support frame (4) is provided with a slot hole whose size matches that of the double-headed screw (13).

6. A small pole-mounted substation according to claim 3, characterized in that: The shape of the fixed angle steel (15) is L-shaped.

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