Combined pole-mounted transformer system

Abstract

The utility model discloses a combined type pole-mounted transformer system which comprises a support assembly and a supporting base which are installed between telegraph poles, and the supporting base is located below the support assembly. The support assembly comprises a transformer support, and a pole-mounted transformer is arranged on the transformer support. A stacked distribution transformer chamber is installed on the supporting base, and a distribution box and a combined transformer which are connected through an interconnection switch are arranged in the stacked distribution transformer chamber. A high-voltage cable is arranged at the upper end of the telegraph pole and can be connected to a high-voltage terminal of the pole-mounted transformer through a high-voltage lead, and a low-voltage terminal of the pole-mounted transformer can be connected with the distribution box through a low-voltage lead. According to the utility model, the problems of overload and difficulty in capacity increase of the pole-mounted transformer can be effectively solved, and the floor area of ground equipment can be obviously reduced, so that the power supply capability and stability of a power distribution network are improved, and the investment cost and the electric energy loss are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to but are not limited to transformer technical field, especially a combined pole transformer system. BACKGROUND

[0002] In the current power distribution network architecture, key components such as pole-mounted high-voltage switch, pole-mounted high-voltage drop-out fuse, high-voltage arrester, pole-mounted transformer and low-voltage distribution box constitute the main part, which work together to form the core power supply architecture of the power distribution network. However, the installation of the pole-mounted transformer is limited by the standard specification of the cross arm, which leads to an explicit upper limit of its carrying weight. Under normal circumstances, the capacity of the pole-mounted transformer cannot exceed 630kVA, and once it exceeds this range, it may cause safety hazards due to overweight. This limitation restricts the power supply capacity of the power distribution network to some extent.

[0003] With the sustained and rapid economic development in recent years, the electricity demand of residents has risen sharply, leading to frequent overload of pole-mounted transformers. This not only affects the stability and reliability of power supply, but also may cause damage to power grid equipment. In addition, due to the shortage of land resources in some areas, the construction planning of power facilities faces many difficulties. This makes it difficult for power facilities to reach the center of electricity load, resulting in the forced extension of the transmission distance. The long transmission distance not only increases the investment cost, but also increases the energy loss in the process of transmission and distribution, reducing the energy utilization efficiency. SUMMARY

[0004] The following is a summary of the subject matter described in detail in this document. This summary is not intended to limit the scope of protection of the claims. The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model embodiment provides a combined pole-mounted transformer system, which not only effectively solves the problem of overload and capacity increase of the pole-mounted transformer, but also significantly reduces the floor space occupied by ground equipment, thereby improving the power supply capacity and stability of the power distribution network, while reducing the investment cost and energy loss.

[0005] The utility model embodiment provides a combined pole-mounted transformer system, which comprises a support assembly installed between power poles and a support base, the support base is located below the support assembly, the support assembly comprises a transformer support, and a pole-mounted transformer is arranged on the transformer support; a stacked distribution transformer chamber is installed on the support base, a distribution box and a combined transformer are arranged in the stacked distribution transformer chamber, and the distribution box and the combined transformer are connected through a tie switch; a high-voltage cable is arranged at the upper end of the power pole, the high-voltage cable is connected to the high-voltage terminal of the pole-mounted transformer through a high-voltage lead, and the low-voltage terminal of the pole-mounted transformer is connected to the distribution box through a low-voltage lead.

[0006] According to some embodiments of the utility model, the support assembly further includes a plurality of support cross arms, the support cross arms are provided with high-voltage electrical equipment, the high-voltage lead is arranged in the high-voltage electrical equipment and is connected to the high-voltage terminal of the pole-mounted transformer.

[0007] According to some embodiments of the utility model, the high-voltage electrical equipment includes one or more of an insulator assembly, a disconnecting switch, a lightning arrester and a high-voltage circuit breaker.

[0008] According to some embodiments of the utility model, the support cross arm includes a high-voltage insulator support arranged at the upper end of the utility pole, a plurality of high-voltage insulators are arranged at equal intervals on the high-voltage insulator support, and different high-voltage cables are arranged on different high-voltage insulators.

[0009] According to some embodiments of the utility model, the support assembly further includes a fixing assembly, and the fixing assembly is used for fixing the support cross arm to the utility pole.

[0010] According to some embodiments of the utility model, the support cross arm is provided with through holes at two sides, the fixing assembly includes a screw rod and a nut, the screw rod is arranged in the through hole, and the nut is screwed with the screw rod to fix the support cross arm to the utility pole.

[0011] According to some embodiments of the utility model, the combined transformer includes a high-voltage cabinet, a transformer, a low-voltage metering in-out line cabinet, a first low-voltage compensation cabinet and a low-voltage contact cabinet which are electrically connected in sequence.

[0012] According to some embodiments of the utility model, the combined transformer includes a high-voltage cabinet, a transformer, a low-voltage metering in-out line cabinet, a first low-voltage compensation cabinet and a low-voltage contact cabinet which are electrically connected in sequence.

[0013] According to some embodiments of the utility model, the combined transformer includes a high-voltage cabinet, a transformer, a low-voltage metering in-out line cabinet, a first low-voltage compensation cabinet and a low-voltage contact cabinet which are electrically connected in sequence.

[0014] According to some embodiments of the utility model, the utility pole is provided with a cable fixing member, the cable fixing member includes a first through hole, a second through hole and a connecting surface, and the first through hole and the second through hole are connected through the connecting surface.

[0015] The combined pole-mounted transformer system has at least the following beneficial effects:

[0016] 1. The combined pole-mounted transformer system breaks the bottleneck of traditional pole-mounted transformers being limited by the weight of the standard cross arm. Through the design of the stacked distribution transformer room, different capacity transformers can be flexibly configured without increasing additional weight, significantly improving the power supply capacity of the distribution network and meeting the growing demand for residential electricity.

[0017] 2. By combining the pole-mounted transformer with the combined transformer in the stacked distribution transformer room, the problem of power supply instability and reliability decline caused by single transformer overload can be reduced, thereby improving the operation efficiency and stability of the entire distribution network.

[0018] 3. The combined pole-mounted transformer system can make power facilities more flexible to adapt to different land resource conditions in different regions, reducing the difficulty of power facility construction planning caused by land resource shortage. Through optimized layout, the transmission distance can be shortened, the investment cost can be reduced, and the energy loss in the transmission and distribution process can be reduced, improving energy utilization efficiency.

[0019] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and achieved by the structures specifically pointed out in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and together with the embodiments of the present application are used to explain the technical solutions of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0021] Figure 1 is a structural diagram of the combined pole-mounted transformer system provided by an embodiment of the present application;

[0022] Figure 2 is a partial structural diagram of the combined pole-mounted transformer system provided by an embodiment of the present application;

[0023] Figure 3 is a structural plan view of the stacked distribution transformer room provided by an embodiment of the present application;

[0024] Figure 4 is an internal structural diagram of the combined pole-mounted transformer system provided by an embodiment of the present application;

[0025] Figure 5 is a structural diagram of the cable fixing member provided by an embodiment of the present application;

[0026] Reference signs: pole 110; support base 120; transformer support 130; pole-mounted transformer 131; stacked distribution transformer room 140; distribution box 141; combined transformer 142; high-voltage cable 150; high-voltage lead 160; low-voltage lead 170; support cross arm 210; screw rod 220; nut 230; insulator assembly 111; disconnector 112; arrester 113; high-voltage circuit breaker 114; first area 310; high-voltage cabinet 311; transformer 312; low-voltage metering incoming and outgoing line cabinet 313; first low-voltage compensation cabinet 314; low-voltage communication cabinet 315; second area 320; low-voltage metering incoming line cabinet 321; low-voltage outgoing line cabinet 322; second low-voltage compensation cabinet 323; emergency power supply interface 410; cable fixing member 510. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the present application, it should be understood that, if there is a description of orientation, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0029] In the description of the present application, if there is a description of first, second, etc. for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0030] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical solution.

[0031] The embodiments of the present application are described in detail below.

[0032] Reference Figure 1 , Figure 1is a structural diagram of a combined pole-mounted transformer system provided by an embodiment of the present utility model. The combined pole-mounted transformer system integrates a support assembly and a support base 120 installed between the utility poles 110, wherein the support base 120 is located below the support assembly. Due to its compact design, the system can significantly reduce the equipment footprint of the ground area, compared with the case where multiple foundations need to be built for different equipment in the past, greatly saving space. Further, the support assembly includes a transformer support 130, on which a pole-mounted transformer 131 is installed. The support base 120 is installed with a stacked distribution transformer room 140, which is provided with a distribution box 141 and a combined transformer 142. Among them, the distribution box 141 and the combined transformer 142 can be connected through a tie-in switch, which ensures that when any one of the two transformers (including the pole-mounted transformer 131 and the transformer in the combined transformer 142) fails, the load of the faulty line can still continue to operate by closing the tie-in switch, thereby greatly improving the reliability of power supply. In addition, the upper end of the utility pole 110 is provided with a high-voltage cable 150, which can be connected to the high-voltage terminal of the pole-mounted transformer 131 through a high-voltage lead 160. The low-voltage terminal of the pole-mounted transformer 131 can be connected to the distribution box 141 through a low-voltage lead 170, forming the low-voltage output side of the pole-mounted transformer 131. This system not only effectively reduces the total equipment footprint, but also significantly improves the power supply capacity.

[0033] In some embodiments of the present utility model, as shown in Figure 2 The support assembly can be composed of a plurality of support cross arms 210, and each support cross arm 210 can be provided with high-voltage electrical equipment. That is, by combining a plurality of support cross arms 210, a complete support assembly can be built to support high-voltage electrical equipment. For example, every two support cross arms 210 can be symmetrically spliced together to form a stable support structure, thereby effectively supporting high-voltage electrical equipment.

[0034] In some embodiments of the present utility model, the support assembly further includes a fixing assembly. The main function of these fixing assemblies is to firmly fix the support cross arms 210 on the utility poles 110, ensuring the stability and safety of the entire support assembly.

[0035] Specifically, in some embodiments of the present utility model, as shown in Figure 2As shown, both sides of the support cross arm 210 can be designed with multiple through holes (for example, two). These through holes provide convenient locations for the installation of the fixing assembly. The fixing assembly is mainly composed of a screw rod 220 and a nut 230. The screw rod 220 can pass through the through hole reserved in the support cross arm 210, and then, through the tightening action of the nut 230 and the screw rod 220, the support cross arm 210 can be firmly fixed on the power pole 110. It needs to be particularly pointed out that when two support cross arms 210 need to be symmetrically spliced together to form a support structure and be fixed with the power pole 110, the screw rod 220 can be used to pass through the corresponding through holes of the two support cross arms 210, and then the nut 230 and the screw rod 220 can be tightened at the through hole positions on both sides. In addition, in the case where only one support cross arm 210 is needed to provide support, the screw rod 220 can be designed in the form of elastic deformation. At this time, only the two ends of the screw rod 220 need to be passed around the power pole 110 and through the through hole of the support cross arm 210, and then the nut 230 and the screw rod 220 can be tightened.

[0036] In some embodiments of the present application, the high-voltage electrical equipment can cover one or more key components of the insulator assembly, the disconnector, the arrester, and the high-voltage circuit breaker. Figure 1 In some embodiments of the present application, the high-voltage electrical equipment in the combined pole-mounted transformer system includes an insulator assembly 111, a disconnector 112, an arrester 113, and a high-voltage circuit breaker 114. These high-voltage electrical equipment plays its own role in the power system, and jointly guarantees the safe and stable operation of the power system. In particular, the high-voltage lead 160, as an important medium for power transmission, can be arranged in these high-voltage electrical equipment to achieve the transmission of electric energy. When accessing the high-voltage terminal of the pole-mounted transformer 131, the high-voltage lead 160 not only ensures the effective transmission of electric energy from the high-voltage electrical equipment to the transformer, but also guarantees the overall performance and stability of the power system through the precise access method.

[0037] In some embodiments of the present application, the support cross arm 210 includes two high-voltage insulator supports, which can be symmetrically installed at the upper end of the power pole 110. In other words, each support cross arm 210 can independently serve as a component part of the high-voltage insulator support, realizing the symmetric layout of the support cross arm 210 at the upper end of the power pole 110. As shown, this high-voltage insulator support can be used to install multiple (for example, three) high-voltage insulators, which can be arranged at equal intervals on the support. The high-voltage cables 150 of different lines can be respectively arranged on these high-voltage insulators, which not only guarantees the safe distance between the cables, but also ensures the stable operation of the power system. Figure 2

[0038] Referring to Figure 3 , Figure 3 ​is a structure top view of the stacked power distribution transformer room provided by an embodiment of the utility model. In some embodiments of the utility model, the stacked power distribution transformer room 140 can be divided into two main areas. Among them, the first area 310 can be specially used for placing the combined transformer 142. The combined transformer 142 includes high voltage cabinet 311, transformer 312, low voltage metering incoming and outgoing line cabinet 313, first low voltage compensation cabinet 314 and low voltage contact cabinet 315 connected in sequence, wherein the contact switch is arranged in the low voltage contact cabinet 315. Further, the first area 310 can be subdivided into transformer room, high voltage room and low voltage room three sub-areas. Among them, the transformer 312 can be installed in the transformer room, the high voltage cabinet 311 is located in the high voltage room, and the low voltage metering incoming and outgoing line cabinet 313, the first low voltage compensation cabinet 314 and the low voltage contact cabinet 315 are orderly placed in the low voltage room.

[0039] In some embodiments of the utility model, the second area 320 of the stacked power distribution transformer room 140 can be specially used for placing the power distribution box 141. The power distribution box 141 contains a series of electrical equipment connected in sequence inside, specifically including low voltage metering incoming line cabinet 321, low voltage outgoing line cabinet 322 and second low voltage compensation cabinet 323.

[0040] In some embodiments of the utility model, as shown in Figure 4 The system can realize effective conversion of high and low voltage, thereby providing stable power supply for residents. In addition, the design of using multiple power supplies for power supply can further enhance the reliability and stability of power supply.

[0041] In some embodiments of the utility model, the low voltage metering incoming and outgoing line cabinet 313 and the low voltage outgoing line cabinet of the power distribution box 141 are provided with emergency power supply interfaces 410, which can not only provide power supply in emergency, ensure that power supply will not be interrupted during temporary maintenance of line, thereby guaranteeing the continuity of power consumption, but also can be used as the reserved energy storage power supply access, providing additional power support for coping with summer peak electricity consumption, effectively relieving the overload pressure that the transformer may face, and ensuring the safe and stable operation of the power grid.

[0042] In some embodiments of the utility model, as shown in Figure 5As shown, the cable fixing member 510 can be installed on the pole 110, which can be composed of a first through hole, a second through hole and a connecting surface connecting the two through holes. Specifically, the diameter of the first through hole is larger than that of the second through hole, and the pole 110 can be fixed through the first through hole, while the relevant electric wire pipe (such as the lead pipe or the cable pipe) can be fixed through the second through hole. In the actual installation process, one or more high-voltage cables 150 can be arranged in the cable pipe, and the low-voltage lead 170 can be arranged in the lead pipe, so as to ensure that the cable fixing member 510 can firmly adhere the high-voltage cable 150 and the low-voltage lead 170 on the pole 110. This fixing method not only makes the cable line neat and orderly, but also significantly improves the safety and stability of the cable line.

[0043] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A combined pole transformer system, characterized in that The utility model provides a kind of support assembly and support base comprising installation between electric pole, the support base is located below the support assembly, the support assembly includes transformer support, and column transformer is provided on the transformer support;Support base is installed with stacked distribution transformer room, distribution box and combined transformer are equipped in the stacked distribution transformer room, and distribution box is connected with combined transformer by tie-in switch;High-voltage cable is provided on the upper end of electric pole, and high-voltage cable is connected with the high-voltage terminal of column transformer by high-voltage lead, and the low-voltage terminal of column transformer is connected with distribution box by low-voltage lead.

2. The combined padmount transformer system of claim 1, wherein, The support assembly further includes a plurality of support crosspieces, the support crosspieces are provided with high-voltage electrical equipment, the high-voltage lead is arranged in the high-voltage electrical equipment and connected with the high-voltage terminal of the column transformer.

3. The combined padmount transformer system of claim 2, wherein, The high-voltage electrical equipment includes one or more of insulator assembly, disconnecting switch, lightning arrester and high-voltage circuit breaker.

4. The combined padmount transformer system of claim 2, wherein, The support crosspieces include high-voltage insulator support arranged on the upper end of the electric pole, a plurality of high-voltage insulators are arranged on the high-voltage insulator support at equal intervals, and different high-voltage cables are arranged on different high-voltage insulators.

5. The combined pole transformer system of claim 2, wherein, The support assembly further includes a fixing assembly for fixing the support crosspieces to the electric pole.

6. The combined padmount transformer system of claim 5, wherein, The support crosspieces are provided with through holes on both sides, the fixing assembly includes a screw rod and a nut, the screw rod is arranged in the through hole, and the nut is screwed with the screw rod to fix the support crosspieces to the electric pole.

7. The combined padmount transformer system of claim 1, wherein, The combined transformer includes a high-voltage cabinet, a transformer, a low-voltage metering in-out line cabinet, a first low-voltage compensation cabinet and a low-voltage tie-in cabinet which are electrically connected in sequence.

8. The combined padmount transformer system of claim 7, wherein, The stacked distribution transformer room includes a first area, and the combined transformer is arranged in the first area, the first area includes a transformer room, a high-voltage room and a low-voltage room, the transformer is arranged in the transformer room, the high-voltage cabinet is arranged in the high-voltage room, and the low-voltage metering in-out line cabinet, the first low-voltage compensation cabinet and the low-voltage tie-in cabinet are arranged in the low-voltage room.

9. The combined padmount transformer system of claim 1, wherein, The stacked distribution transformer room further includes a second area, and the distribution box is arranged in the second area, the distribution box includes a low-voltage metering in-line cabinet, a low-voltage out-line cabinet and a second low-voltage compensation cabinet which are electrically connected in sequence.

10. The combined padmount transformer system of claim 1, wherein, The electric pole is provided with a cable fixing member, the cable fixing member includes a first through hole, a second through hole and a connecting surface, and the first through hole and the second through hole are connected by the connecting surface.

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