Transformer for power transmission and distribution

Abstract

The application provides a transformer for power transmission and distribution, and belongs to the technical field of transformers.The transformer for power transmission and distribution comprises an oil tank, a power transmission transformer body and a power distribution transformer body, the power transmission transformer body and the power distribution transformer body are arranged in the oil tank, the power transmission transformer body comprises a power transmission iron core clamp and a power transmission coil, three groups of power transmission coils are arranged along the length direction of the oil tank, the power distribution transformer body comprises a power distribution iron core clamp and a power distribution coil, three groups of power distribution coils are arranged along the width direction of the oil tank, one end of the power transmission iron core clamp close to the power distribution iron core clamp is provided with a fixing assembly, the power distribution iron core clamp is arranged at the other end of the fixing assembly, and the low-voltage side of the power transmission transformer body is connected with the high-voltage side of the power distribution transformer body through a connecting line.The transformer for power transmission and distribution has the advantages that the power transmission transformer body and the power distribution transformer body are arranged in the same oil tank, the occupied area is reduced, and the production cost is lowered.

Description

Technical Field

[0001] This invention belongs to the field of transformer technology, and specifically relates to a transformer for integrated transmission and distribution. Background Technology

[0002] Transformers are essential equipment in the power transmission process, playing an irreplaceable role. In production and daily life, substations, thermal power plants, wind power plants, photovoltaic power plants, and other power transmission and generation equipment all require transmission and distribution transformers to provide electricity for production and daily life. Transmission and distribution transformers work together to transmit and distribute power, and as important components of substations, they are crucial for the safe operation and maintenance of the power grid. In the use of distribution transformers, conventional distribution transformers require independent space and independent protection components, thus occupying a large area. For locations with limited space, setting up independent distribution transformers would result in a waste of land resources and manufacturing costs. Summary of the Invention

[0003] The purpose of this invention is to provide a transformer for integrated power transmission and distribution, which aims to solve the problem of waste of land resources and manufacturing costs caused by independent distribution transformers.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A power transmission and distribution integrated transformer is provided, comprising an oil tank, a power transmission transformer body, and a distribution transformer body. The power transmission transformer body and the distribution transformer body are disposed within the oil tank. The distribution transformer body is disposed on one side of the power transmission transformer body. The power transmission transformer body includes a power transmission core clamp and three sets of power transmission coils arranged side-by-side, with the three sets of power transmission coils arranged along the length direction of the oil tank. The distribution transformer body includes a distribution core clamp and three sets of distribution coils arranged side-by-side, with the three sets of distribution coils arranged along the width direction of the oil tank. A fixing component is provided at one end of the power transmission core clamp near the distribution core clamp, and the distribution core clamp is disposed at the other end of the fixing component. The low-voltage side of the power transmission transformer body is connected to the high-voltage side of the distribution transformer body via a connecting line.

[0005] In one possible implementation, a plug-in fuse is provided on the connection line between the low-voltage side of the transmission transformer and the high-voltage side of the distribution transformer.

[0006] In one possible implementation, the upper surface of the oil tank is provided with a transmission bushing and a distribution bushing, the leads of the transmission transformer body are led out from the transmission bushing, and the leads of the distribution transformer body are led out from the distribution bushing.

[0007] In one possible implementation, the transmission bushing is provided in seven groups, including three groups of high-voltage side bushings, three groups of low-voltage side bushings, and a zero-phase bushing.

[0008] In one possible implementation, the distribution bushings are provided in four sets, including three sets of low-voltage side distribution bushings and a zero-phase distribution bushing.

[0009] In one possible implementation, an external fuse is provided on the low-voltage side bushing of the power distribution system.

[0010] In one possible implementation, the transmission transformer body is positioned on the axis of the distribution transformer body.

[0011] In one possible implementation, the fixing component is disposed on the transmission core clamp, and the fixing component includes a front fixing plate and a rear fixing plate, which are respectively fixed to the front and rear end faces of the transmission core clamp, and the distribution transformer body is hung on the front fixing plate and the rear fixing plate.

[0012] In one possible implementation, the transmission transformer body is Y-Δ connected, and the distribution transformer body is Δ-Y connected.

[0013] In one possible implementation, an oil storage tank is provided on the outside of the oil tank, and a gas relay, a pressure relief valve, an oil level temperature controller, and an oil level gauge are provided on the upper surface of the oil tank.

[0014] The beneficial effects of the integrated power transmission and distribution transformer provided by this invention are as follows: Compared with existing technologies, this invention includes an oil tank, a transmission transformer body, and a distribution transformer body. Both the transmission and distribution transformer bodies are housed within the same oil tank, with the transmission transformer body extending along the length of the tank. The distribution transformer body is positioned closer to the transmission transformer body and extends along the width of the oil tank. The transmission and distribution transformer bodies are perpendicular to each other. The transmission transformer body includes a transmission core clamp and three sets of transmission coils, while the distribution transformer body includes a distribution core clamp and three sets of distribution coils. A fixing assembly is provided between the transmission and distribution core clamps to secure the distribution transformer. The transformer body is mounted on one side of the transmission transformer body. The low-voltage side of the transmission transformer body and the high-voltage side of the distribution transformer body are connected by connecting lines. The low-voltage side of the transmission transformer body and the high-voltage side of the distribution transformer body are connected inside the oil tank. The high-voltage side of the distribution transformer body is powered by the low-voltage side of the transmission transformer body. It adopts a dual-body shared tank structure. The transmission transformer body is used for long-distance power transmission, and the distribution transformer body provides power for local electrical equipment. The low-voltage side of the transmission transformer body provides power to the distribution transformer body. The distribution transformer body is fixed on the clamps of the transmission transformer, which reduces the footprint and lowers production costs and installation difficulty. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A top view of the integrated power transmission and distribution transformer provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal front view structure of a transformer for integrated power transmission and distribution provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the wiring of the transmission transformer body and the distribution transformer body used in the embodiments of the present invention; Figure 4 This is a schematic diagram of the external fuse used in an embodiment of the present invention.

[0017] In the diagram: 1. Oil level gauge; 2. Oil tank; 3. Gas relay; 4. Pressure relief valve; 5. Oil level temperature controller; 6. High-voltage side bushing for power transmission; 7. Low-voltage side bushing for power transmission; 8. Insert-type fuse; 9. Low-voltage side bushing for power distribution; 10. Power transmission coil; 11. Front side plate; 12. Front fixing plate; 13. Power distribution coil; 14. Three-phase leads on the high-voltage side of the power transmission transformer body; 15. Three-phase leads on the low-voltage side of the power transmission transformer body; 16. Connecting wire; 17. Oil tank; 18. Three-phase leads on the high-voltage side of the power distribution transformer body; 19. Three-phase leads on the low-voltage side of the power distribution transformer body; 20. Extended front plate; 21. Fixed base plate; 22. External fuse; 23. Power distribution insulator bracket; 24. Tensioning rod; 25. Suspension bracket. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] Please refer to Figures 1 to 4 The present invention provides a specific embodiment of a power transmission and distribution transformer, comprising an oil tank 17, a power transmission transformer body, and a distribution transformer body. The power transmission transformer body and the distribution transformer body are disposed within the oil tank 17, with the distribution transformer body disposed on one side of the power transmission transformer body. The power transmission transformer body includes a power transmission core clamp and three sets of power transmission coils 10 arranged side by side, with the three sets of power transmission coils 10 arranged along the length of the oil tank 17. The distribution transformer body includes a power distribution core clamp and three sets of power distribution coils 13 arranged side by side, with the three sets of power distribution coils 13 arranged along the width of the oil tank 17. A fixing component is disposed at one end of the power transmission core clamp near the power distribution core clamp, and the power distribution core clamp is disposed at the other end of the fixing component. The low-voltage side of the power transmission transformer body is connected to the high-voltage side of the distribution transformer body via a connecting line 16.

[0020] This invention provides a power transmission and distribution integrated transformer. Compared with the prior art, it includes an oil tank 17, a power transmission transformer body, and a distribution transformer body. Both the power transmission transformer body and the distribution transformer body are housed within the oil tank 17. The power transmission transformer body is positioned along the length of the oil tank 17, while the distribution transformer body is positioned on the side closest to the power transmission transformer body and along the width of the oil tank 17. The power transmission transformer body and the distribution transformer body are perpendicular to each other. The power transmission transformer body includes a power transmission core clamp and three sets of power transmission coils 10. The distribution transformer body includes a distribution core clamp and three sets of distribution coils 13. A [missing information - likely a typo, should be inserted here] is provided between the power transmission core clamp and the distribution core clamp. The fixed assembly hangs the distribution transformer body on one side of the transmission transformer body. The low-voltage side of the transmission transformer body and the high-voltage side of the distribution transformer body are connected by connecting line 16. The low-voltage side of the transmission transformer body and the high-voltage side of the distribution transformer body are connected inside the oil tank 17. The power supply for the high-voltage side of the distribution transformer body is provided by the low-voltage side of the transmission transformer body. A dual-body shared tank structure is adopted. The transmission transformer body is used for long-distance power transmission, and the distribution transformer body provides power for local electrical equipment. The low-voltage side of the transmission transformer body provides power to the distribution transformer body. Fixing the distribution transformer body on the transmission transformer clamp reduces the footprint, production costs, and installation difficulty.

[0021] For details, please refer to Figures 1 to 4The system includes an oil tank 17, a transmission transformer body, and a distribution transformer body. The transmission and distribution transformer bodies are housed within the oil tank 17. The transmission transformer body includes transmission core clamps and transmission coils 10, with three sets of transmission coils 10 arranged in a row along the length of the oil tank 17. The transmission core clamps include an upper and a lower clamp, which are respectively positioned at the upper and lower ends of the three sets of transmission coils 10. The distribution transformer body includes distribution core clamps and distribution coils 13, with three sets of distribution coils 13 arranged in a row along the width of the oil tank 17. The distribution core clamps include an upper and a lower clamp, which are respectively positioned at the upper and lower ends of the three sets of distribution coils 13. At both ends, the distribution transformer is installed between the transmission transformer body and the inner wall of the tank 17. The distribution transformer body and the transmission transformer body are perpendicular to each other. The fixing component is installed between the transmission core clamp and the distribution core clamp. The fixing component hangs the distribution transformer body on one side of the transmission transformer body. The low-voltage side of the transmission transformer body and the high-voltage side of the distribution transformer body are connected by the connecting line 16, which is located inside the tank 17. The high-voltage side of the distribution transformer body is powered by the low-voltage side of the transmission transformer body. A dual-body shared tank structure is adopted. The transmission transformer body is used for long-distance power transmission, and the distribution transformer body provides power for local electrical equipment. The low-voltage side of the transmission transformer body provides power to the distribution transformer body. The distribution transformer body is fixed on the transmission transformer clamp, which reduces the footprint and lowers the production cost and installation difficulty.

[0022] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 1 , Figure 3 A plug-in fuse 8 is installed on the connection line 16 between the low-voltage side of the transmission transformer body and the high-voltage side of the distribution transformer body.

[0023] For details, please refer to Figure 1 , Figure 3 The plug-in fuse 8 is installed on the connection line 16 between the low-voltage side of the transmission transformer body and the high-voltage side of the distribution transformer body. The three phases of the low-voltage side of the transmission transformer body are connected one-to-one with the three phases of the high-voltage side of the distribution transformer body. There are three sets of connection lines 16, and each set of connection lines 16 is equipped with a set of plug-in fuses 8. When the current exceeds the specified value, the plug-in fuse 8 disconnects the corresponding line, which can effectively protect the high-voltage winding of the distribution transformer body.

[0024] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 1 , Figure 3The upper end face of the oil tank 17 is provided with a power transmission bushing and a power distribution bushing. The leads of the power transmission transformer body are led out from the power transmission bushing, and the leads of the power distribution transformer body are led out from the power distribution bushing.

[0025] For details, please refer to Figure 1 , Figure 3 The upper end face of the oil tank 17 is provided with a power transmission bushing and a power distribution bushing. The power transmission bushing is matched with the lead wires of the power transmission transformer body, and the power distribution bushing is matched with the lead wires of the power distribution transformer body.

[0026] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 1 , Figure 3 The transmission bushings are set in seven groups, including three groups of high-voltage side bushings 6, three groups of low-voltage side bushings 7, and a zero-phase bushing.

[0027] For details, please refer to Figure 1 , Figure 3 The transmission bushing is provided in seven sets, including three sets of high-voltage side bushings 6, three sets of low-voltage side bushings 7, and a zero-phase bushing. The three sets of high-voltage side bushings 6 are used to lead out the three-phase leads 14 of the high-voltage side of the transmission transformer body, the three sets of low-voltage side bushings 7 are used to lead out the three-phase leads 15 of the low-voltage side of the transmission transformer body, and the zero-phase bushing is used to lead out the zero-phase lead of the transmission transformer body.

[0028] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 1 , Figure 3 The distribution bushings are set in four sets, including three sets of low-voltage side distribution bushings 9 and a zero-phase distribution bushing.

[0029] For details, please refer to Figure 1 , Figure 3 The distribution bushings are provided in four sets, including three sets of low-voltage side bushings 9 and a distribution zero-phase bushing. The three sets of low-voltage side bushings 9 are used to lead out the three-phase leads 19 of the low-voltage side of the distribution transformer body, and the distribution zero-phase bushing is used to lead out the zero-phase lead of the distribution transformer body.

[0030] For further details, please refer to Figure 1 , Figure 3 One side of the three sets of connecting wires 16 is respectively set on the three-phase lead 15 of the low-voltage side of the power transmission transformer body, and is set between the outlet of the three-phase lead of the power transmission transformer body and the three sets of low-voltage side coils of the power transmission transformer body. The second end of the three sets of connecting wires 16 is respectively connected to the three-phase lead 18 of the high-voltage side of the distribution transformer body.

[0031] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 1 , Figure 4 An external fuse 22 is installed on the low-voltage side bushing 9 of the power distribution system.

[0032] For details, please refer to Figure 1 , Figure 4 An external fuse 22 is installed at the upper end of the low-voltage side bushing 9 of the power distribution transformer, corresponding to each bushing 9. A power distribution insulator bracket 23 is installed on the oil tank 17, and the power distribution insulator bracket 23 is installed on one side of the low-voltage side bushing 9, corresponding to each bushing 9. The other end of the external fuse 22 is installed at the upper end of the power distribution insulator bracket 23. When there is an overcurrent problem, the external fuse 22 melts and disconnects the relevant lines, which can effectively protect the low-voltage winding of the power distribution transformer.

[0033] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 1 , Figure 2 The body of the transmission transformer is located on the axis of the body of the distribution transformer.

[0034] For details, please refer to Figure 1 , Figure 2 The transmission transformer body is located on the axis of symmetry along the length of the oil tank 17 of the distribution transformer body, which increases the stability of the device.

[0035] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 2 The fixing components are set on the transmission core clamps. The fixing components include a front fixing plate 12 and a rear fixing plate, which are respectively fixed on the front and rear end faces of the transmission core clamps. The distribution transformer body is hung on the front fixing plate 12 and the rear fixing plate.

[0036] For details, please refer to Figure 2The clamping components on the transmission core include a front side plate 11 and a rear side plate, which are connected by a connecting rod. The front side plate 11 and the rear side plate are respectively located on the front and rear end faces of the transmission coil 10. An extended front plate 20 and an extended rear plate are respectively located at one end of the front side plate 11 and the rear side plate near the transformer body. The fixing assembly includes a front fixing plate 12 and a rear fixing plate. The front fixing plate 12 is fixed to the lower end face of the extended front plate 20, and the rear fixing plate is fixed to the extended rear plate. At the lower end, a fixed base plate 21 is provided at the lower end of the distribution transformer body. The fixed base plate 21 is provided along the length of the distribution transformer body. The distribution transformer body is placed on the fixed base plate 21. Multiple sets of tensioning rods 24 are provided on the left and right sides of the fixed base plate 21. A suspension frame 25 is provided at the upper end of the tensioning rod 24. The suspension frame 25 is fastened to the front fixed plate 12 or the rear fixed plate. The tensioning rods 24 cooperate with the fixed base plate 21 to hang the distribution transformer body on the clamp of the transmission core.

[0037] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, the power transmission transformer body adopts a Y-Δ connection method, and the power distribution transformer body adopts a Δ-Y connection method.

[0038] As a specific embodiment of the integrated power transmission and distribution transformer provided by the present invention, please refer to Figure 1 An oil storage tank 2 is installed on the outside of the oil tank 17, and a gas relay 3, a pressure relief valve 4, an oil level temperature controller 5, and an oil level gauge 1 are installed on the upper surface of the oil tank 17.

[0039] For details, please refer to Figure 1 The oil conservator 2 is located outside the oil tank 17, at the end of the oil tank 17 away from the distribution transformer body. The oil conservator 2 is equipped with an oil level gauge 1. The upper surface of the oil tank 17 is equipped with a gas relay 3, a pressure relief valve 4, and an oil temperature controller 5. The transmission transformer body and the distribution transformer body are located in the same oil tank 17, sharing a set of oil conservator 2, gas relay 3, pressure relief valve 4, oil temperature controller 5, and oil level gauge 1, which reduces the volume and production cost of the oil tank 17 and facilitates installation.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transformer for integrated power transmission and distribution, characterized in that, The system includes an oil tank, a transmission transformer body, and a distribution transformer body. The transmission transformer body and the distribution transformer body are located within the oil tank. The distribution transformer body is situated on one side of the transmission transformer body. The transmission transformer body includes a transmission core clamp and three sets of transmission coils arranged side-by-side, with the three sets of transmission coils extending along the length of the oil tank. The distribution transformer body includes a distribution core clamp and three sets of distribution coils arranged side-by-side, with the three sets of distribution coils extending along the width of the oil tank. The transmission transformer body and the distribution transformer body are arranged perpendicular to each other. The transmission core clamp is located close to the distribution transformer body. A fixing component is provided at one end of the core clamp. The distribution core clamp is located at the other end of the fixing component. The fixing component is located on the transmission core clamp. The fixing component includes a front fixing plate and a rear fixing plate, which are respectively fixed to the front and rear end faces of the transmission core clamp. The distribution transformer body is hung on the front fixing plate and the rear fixing plate. The transmission transformer body is used for long-distance power transmission. The distribution transformer body provides power to local electrical equipment. The low-voltage side of the transmission transformer body is connected to the high-voltage side of the distribution transformer body through a connecting line. The low-voltage side of the transmission transformer body provides power to the distribution transformer body.

2. A power transmission and distribution integrated transformer as described in claim 1, characterized in that, A plug-in fuse is installed on the connection line between the low-voltage side of the transmission transformer and the high-voltage side of the distribution transformer.

3. A power transmission and distribution integrated transformer as described in claim 1, characterized in that, The upper surface of the oil tank is provided with a power transmission bushing and a power distribution bushing. The leads of the power transmission transformer body are led out from the power transmission bushing, and the leads of the power distribution transformer body are led out from the power distribution bushing.

4. A power transmission and distribution integrated transformer as described in claim 3, characterized in that, The power transmission bushing is provided in seven sets, including three sets of high-voltage side bushings, three sets of low-voltage side bushings, and a zero-phase bushing.

5. A power transmission and distribution integrated transformer as described in claim 4, characterized in that, The power distribution bushings are provided in four sets, including three sets of low-voltage side bushings and a zero-phase bushing.

6. A power transmission and distribution integrated transformer as described in claim 5, characterized in that, An external fuse is installed on the low-voltage side bushing of the power distribution system.

7. A power transmission and distribution integrated transformer as described in claim 1, characterized in that, The transmission transformer body is located on the axis of the distribution transformer body.

8. A power transmission and distribution integrated transformer as described in claim 1, characterized in that, The transmission transformer body adopts a Y-Δ connection, and the distribution transformer body adopts a Δ-Y connection.

9. A power transmission and distribution integrated transformer as described in claim 1, characterized in that, An oil storage tank is installed on the outside of the oil tank, and a gas relay, a pressure relief valve, an oil level temperature controller, and an oil level gauge are installed on the upper surface of the oil tank.

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