A conductor connection structure for a high-voltage suspended tubular busbar

Abstract

The present invention relates to the technical field of substations, and more specifically, to a conductor connection structure for a high-voltage suspended tubular busbar. The structure comprises a first main busbar conductor and a second main busbar conductor, with a transition busbar conductor disposed between the first and second main busbar conductors. Flexible conductor connection devices are provided at opposing ends of the first and second main busbar conductors, and limit devices are provided at both ends of the transition busbar conductor where it extends into the first and second main busbar conductors. With this structure, the conductors can be adjusted horizontally, with limit devices provided to control displacement outside their range. Furthermore, a flexible conductor assembly similar to the Earth's meridian is employed to meet current transmission and conductor adjustment requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer substations, and in particular to a conductor connection structure of a high-voltage suspended tubular busbar. Background Art

[0002] Domestic substation high-voltage distribution devices use suspended tubular conductors as the main busbars. With the diversification of substation layouts, the flexible connection method of steel-core aluminum stranded wire and the rigid connection method of universal joints (expansion joints) between tubular busbars can no longer meet the requirements of high-voltage substation projects. Among them, the soft wire connection has the disadvantages of high construction process requirements and difficult and unsightly finished products. The universal joint (expansion joint) connection method is a rigid connection, which is difficult and has poor corona noise control. The tubular busbar error can lead to serious consequences such as failure to connect, and will bring many inconveniences to the later construction, operation and maintenance. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the purpose of the present invention is to provide a conductor connection structure for a high-voltage suspended tubular busbar, which is a semi-rigid and semi-constrained connection form. Under this form, the busbar conductor can be adjusted to a large extent in the horizontal direction. At the same time, a limit device is set to control the range of movement, and a flexible earth meridian soft wire connection device is used to meet the current transmission requirements and conductor adjustment requirements. Through this connection form, the error tolerance range caused by design and construction can be improved, the construction and installation time and construction difficulty of the suspended tubular busbar can be reduced, corona and noise can be reduced, the installation aesthetics of the suspended tubular busbar can be improved, the power transmission requirements of the substation can be met, and convenience can be brought to the later operation and maintenance. It can be widely used in high-voltage, ultra-high-voltage, and ultra-high-voltage substations (converter stations).

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A conductor connection structure for a high-voltage suspended tubular busbar, comprising a main busbar conductor 1, a main busbar conductor 6, a transition busbar conductor 2, a flexible wire connection device 3, and a limit device 4;

[0006] A transition busbar conductor 2 is arranged between the main busbar conductor 1 and the main busbar conductor 2 6. One end of the transition busbar conductor 2 is inserted into the main busbar conductor 1, and the other end of the transition busbar conductor 2 is inserted into the main busbar conductor 2 6. There is a gap between the transition busbar conductor 2 and the part where the main busbar conductor 1 and the main busbar conductor 2 6 are arranged. Due to the characteristics of its own structure, it can be adjusted slightly in the vertical direction to meet the needs of construction and installation.

[0007] The opposite ends of the main bus conductor 1 and the main bus conductor 2 6 are both provided with a soft wire connecting device 3, and the soft wire connecting device includes a hoop 1 7 and a hoop 2 8. A plurality of soft wires 9 are arranged between the hoop 1 7 and the hoop 2 8. The length of the plurality of soft wires 9 is greater than the distance between the hoop 1 7 and the hoop 2 8. The plurality of soft wires 9 are uniformly spherical in structure, and a soft wire combination device similar to the earth's meridian is used to meet the current transmission requirements and conductor adjustment requirements.

[0008] The main bus conductor 1 and the main bus conductor 2 6 are connected to the transition bus conductor 2 with a soft wire connection device 3, wherein the hoop 1 7 of one soft wire connection device is sleeved on the outside of the main bus conductor 1, and the hoop 2 8 is sleeved on the transition bus conductor 2; the hoop 1 7 of the other soft wire connection device is sleeved on the outside of the main bus conductor 2 6, and the hoop 2 8 is sleeved on the transition bus conductor 2, and the main bus conductor 1, the transition bus conductor 2 and the main bus conductor 2 6 are connected together by the two soft wire connection devices;

[0009] Through the above technical solution, the main busbar conductor 1 and the main busbar conductor 2 are installed by plug-in installation with the help of the transition busbar conductor, so that the main busbar conductor and the transition tube busbar conductor are organically connected into a system, and a very long chain structure is formed through a chain structure, which reduces the difficulty of on-site construction and installation time.

[0010] A limiting device 4 is provided at each end of the transition busbar conductor 2 extending into the main busbar conductor 1 and the main busbar conductor 2 6. The limiting device includes a limiting slide groove opened on the side walls of the main busbar conductor 1 and the main busbar conductor 2 6 and a slider provided on the side wall of the transition busbar conductor 2. The slider is adapted to the limiting slide groove; the main busbar conductor 1 and the main busbar conductor 2 6 are slidably provided on the transition busbar conductor 2.

[0011] Through the above technical solution, the busbar conductor can be adjusted in the horizontal direction, and the displacement of the movable range can be controlled by setting a limit device.

[0012] Furthermore, the conductor connection structure also includes an energy dissipation device, which includes an energy dissipation conductor 5. The energy dissipation conductor 5 is disposed within the main busbar conductor 1, the transition busbar conductor 2, and the main busbar conductor 2 6. Connectors 10 are provided at both ends of the energy dissipation conductor 5. The two connectors 10 are respectively disposed on the inner walls of the main busbar conductor 1 and the main busbar conductor 2 6. Preferably, the connectors 10 are located at the center of the main busbar conductor 1 and the main busbar conductor 2 6.

[0013] Through the above technical solution, an energy dissipation device is provided to prevent the conductor from swinging after being subjected to a vertical force. The energy dissipation device can stop the swinging as quickly as possible, thereby ensuring the safety of the semi-rigid and semi-constrained connection form of the conductor of the suspended tubular busbar.

[0014] Furthermore, the main busbar conductor 1 and the main busbar conductor 2 6 have the same inner and outer diameters.

[0015] Furthermore, the inner diameters of the main busbar conductor 1 and the main busbar conductor 2 6 and the outer diameter of the transition busbar conductor 2 satisfy the following relationship:

[0016] D wn =603.70*sin(0.001687*D nw -0.02152)

[0017] Where D wn D is the inner diameter of main busbar conductor 1 and main busbar conductor 2, nw It is the outer diameter of the transition busbar conductor.

[0018] The above settings ensure that the adjustment range on the Y and Z axes meets the requirements under the structure. This matching relationship is the optimal setting. Other matching relationships can also be used in actual applications, but the semi-rigid and semi-constrained connection structure remains unchanged.

[0019] Furthermore, the size of the hoop 1 7 is adapted to the outer diameters of the main bus conductor 1 and the main bus conductor 2 6 , and the size of the hoop 2 8 is adapted to the outer diameter of the transition bus conductor 2 .

[0020] Furthermore, the opposite ends of the main busbar conductor 1 and the main busbar conductor 2 6 are both provided with a tubular busbar suspension hardware 11, and are connected to the transmission line frame through the tubular busbar suspension hardware 11.

[0021] Compared with the prior art, the conductor connection structure of the tubular busbar of the present invention has the following advantages:

[0022] (1) The transition tube busbar conductor is embedded in the main busbar conductor and installed by plug-in, which reduces the construction difficulty and installation time on site;

[0023] (2) The earth meridian soft conductor connection device is used in conjunction with the limit device to meet the requirements of horizontal displacement adjustment, reduce corona and noise, and meet the requirements of power transmission;

[0024] (3) An energy dissipation device is provided to prevent the conductor from swinging after being subjected to a vertical force. The swing can be stopped as soon as possible by damping the conductor, thereby ensuring the safety of the semi-rigid and semi-constrained connection form of the conductor of the suspended tubular busbar.

[0025] To sum up, under this structure, the conductor can be adjusted to a large extent in the horizontal direction, and a sliding limit groove is set to control the displacement outside the range of movement to meet the needs of construction and installation. A soft wire combination device similar to the earth's meridian is used to meet the current transmission requirements and conductor adjustment requirements. Through this connection form, the construction and installation time and construction difficulty of the suspended tubular busbar can be reduced, corona and noise can be reduced, the current transmission requirements of the substation can be met, and convenience can be brought to the subsequent operation and maintenance. It can be widely used in high-voltage, ultra-high-voltage, and ultra-high-voltage substations (converter stations). BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the conductor connection structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the flexible wire connection device of the present invention;

[0028] In the figure, 1-main bus conductor 1; 2-transition bus conductor; 3-flexible wire connection device; 4-limiting device; 5-consumable wire; 6-main bus conductor 2; 7-hoop 1; 8-hoop 2; 9-flexible wire; 10-connector; 11-tube bus suspension fitting. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are only used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0031] Example 1

[0032] like Figure 1As shown, this embodiment provides a conductor connection structure for a high-voltage suspended tubular busbar, comprising a main busbar conductor 1, a main busbar conductor 2 6, a transition busbar conductor 2, a flexible wire connection device 3, and a limit device 4. The main busbar conductor 1 and the main busbar conductor 2 6 have the same inner and outer diameters, with a transition busbar conductor 2 disposed between them. One end of the transition busbar conductor 2 is inserted into the main busbar conductor 1, and the other end is inserted into the main busbar conductor 2 6. The main busbar conductor 1 and the main busbar conductor 2 6 are plug-in-connected via the transition busbar conductor 2, forming a very long chain structure. A gap is left between the outer wall of the transition busbar conductor 2 and the inner wall of the portion where the main busbar conductor 1 and the main busbar conductor 2 6 are nested. Due to its structural characteristics, the transition busbar conductor 2 can be slightly adjusted in the vertical direction (Y-axis) to meet construction and installation requirements.

[0033] like Figure 1 、 Figure 2 As shown, the opposite ends of the main bus conductor 1 and the main bus conductor 2 6 are both provided with a soft wire connecting device 3, which includes a hoop 1 7 and a hoop 2 8. A plurality of soft wires 9 are arranged between the hoop 1 7 and the hoop 2 8. The plurality of soft wires 9 are evenly distributed in a spherical structure. The length of the plurality of soft wires 9 is greater than the distance between the hoop 1 7 and the hoop 2 8. A soft wire combination device similar to the earth's meridian is used to meet the current transmission requirements and the conductor adjustment requirements. A soft wire connecting device 3 is respectively provided at the connection between the main bus conductor 1 and the main bus conductor 2 6 and the transition bus conductor 2, wherein the hoop 1 7 on one of the soft wire connecting devices is sleeved on the outside of the main bus conductor 1, and the hoop 2 8 is sleeved on the transition bus conductor 2; the hoop 1 7 on the other soft wire connecting device is sleeved on the outside of the main bus conductor 2 6, and the hoop 2 8 is sleeved on the transition bus conductor 2, and the main bus conductor 1, the transition bus conductor 2 and the main bus conductor 2 6 are connected together by two soft wire connecting devices, wherein the size of the hoop 1 7 is adapted to the outer diameter of the main bus conductor 1 and the main bus conductor 2 6, and the size of the hoop 2 8 is adapted to the outer diameter of the transition bus conductor 2.

[0034] A limit device 4 is installed at each end of the transition busbar conductor 2, where it extends into the main busbar conductor 1 and main busbar conductor 2 6. The limit device 4 comprises a limit slot on the sidewalls of the main busbar conductor 1 and main busbar conductor 2 6, and a slider on the sidewall of the transition busbar conductor 2. The slider fits into the limit slot. The main busbar conductor 1 and main busbar conductor 2 6 slide on the transition busbar conductor 2. The busbar conductors can be adjusted horizontally, and the displacement of the movable range is controlled by the limit device.

[0035] In the present invention, the inner diameter D of the main bus conductor 1 and the main bus conductor 2 6 is wn The outer diameter D of the transition busbar conductor 2 nw The following relations are satisfied:

[0036] D wn =603.70*sin(0.001687*D nw -0.02152)

[0037] The above settings ensure that the adjustment range on the Y and Z axes meets the requirements under the structure. This matching relationship is the optimal setting. Other matching relationships can also be used in actual applications, but the semi-rigid and semi-constrained connection structure remains unchanged.

[0038] When in use, the opposite ends of the main bus conductor 1 and the main bus conductor 2 6 are both sleeved with the tubular bus suspension hardware 11 and connected to the transmission line frame through the tubular bus suspension hardware 11.

[0039] Example 2

[0040] like Figure 1 As shown, this embodiment provides a conductor connection structure for a high-voltage suspended tubular busbar, comprising a main busbar conductor 1, a main busbar conductor 2 6, a transition busbar conductor 2, a flexible wire connection device 3, and a limit device 4. A transition busbar conductor 2 is disposed between the main busbar conductor 1 and the main busbar conductor 2 6. One end of the transition busbar conductor 2 is inserted into the main busbar conductor 1, and the other end is inserted into the main busbar conductor 2 6. The main busbar conductor 1 and the main busbar conductor 2 6 are plug-in-connected via the transition busbar conductor 2, forming a very long chain structure. A gap is left between the outer wall of the transition busbar conductor 2 and the inner wall of the portion where the main busbar conductor 1 and the main busbar conductor 2 6 are nested. Due to its structural characteristics, the transition busbar conductor 2 can be slightly adjusted in the vertical direction (Y-axis) to meet construction and installation requirements.

[0041] like Figure 1 、 Figure 2As shown, the opposite ends of the main bus conductor 1 and the main bus conductor 2 6 are both provided with a soft wire connecting device 3, which includes a hoop 1 7 and a hoop 2 8. A plurality of soft wires 9 are arranged between the hoop 1 7 and the hoop 2 8. The plurality of soft wires 9 are evenly distributed in a spherical structure. The length of the plurality of soft wires 9 is greater than the distance between the hoop 1 7 and the hoop 2 8. A soft wire combination device similar to the earth's meridian is used to meet the current transmission requirements and the conductor adjustment requirements. A soft wire connecting device 3 is respectively provided at the connection between the main bus conductor 1 and the main bus conductor 2 6 and the transition bus conductor 2, wherein the hoop 1 7 on one of the soft wire connecting devices is sleeved on the outside of the main bus conductor 1, and the hoop 2 8 is sleeved on the transition bus conductor 2; the hoop 1 7 on the other soft wire connecting device is sleeved on the outside of the main bus conductor 2 6, and the hoop 2 8 is sleeved on the transition bus conductor 2, and the main bus conductor 1, the transition bus conductor 2 and the main bus conductor 2 6 are connected together by two soft wire connecting devices, wherein the size of the hoop 1 7 is adapted to the outer diameter of the main bus conductor 1 and the main bus conductor 2 6, and the size of the hoop 2 8 is adapted to the outer diameter of the transition bus conductor 2.

[0042] A limit device 4 is installed at each end of the transition busbar conductor 2, where it extends into the main busbar conductor 1 and main busbar conductor 2 6. The limit device 4 comprises a limit slot on the sidewalls of the main busbar conductor 1 and main busbar conductor 2 6, and a slider on the sidewall of the transition busbar conductor 2. The slider fits into the limit slot. The main busbar conductor 1 and main busbar conductor 2 6 slide on the transition busbar conductor 2. The busbar conductors can be adjusted horizontally, and the displacement of the movable range is controlled by the limit device.

[0043] The conductor connection structure of the present invention also includes an energy dissipation device, comprising an energy dissipation conductor 5, which is disposed within the main busbar conductor 1, the transition busbar conductor 2, and the main busbar conductor 6. Connectors 10 are provided at each end of the energy dissipation conductor 5, with two connectors 10 disposed on the inner walls of the main busbar conductor 1 and the main busbar conductor 6, respectively. Preferably, the connectors 10 are located at the center of the main busbar conductor 1 and the main busbar conductor 6. The energy dissipation device prevents the conductors from swinging when subjected to vertical forces and quickly stops the swinging, thereby ensuring the safety of the semi-rigid, semi-constrained connection of the conductors in the suspended tubular busbar.

[0044] In the present invention, the inner diameter D of the main bus conductor 1 and the main bus conductor 2 6 is wn The outer diameter D of the transition busbar conductor 2 nwThe following relations are satisfied:

[0045] D wn =603.70*sin(0.001687*D nw -0.02152)

[0046] The above settings ensure that the adjustment range on the Y and Z axes meets the requirements under the structure. This matching relationship is the optimal setting. Other matching relationships can also be used in actual applications, but the semi-rigid and semi-constrained connection structure remains unchanged.

[0047] When in use, the opposite ends of the main bus conductor 1 and the main bus conductor 2 6 are both sleeved with the tubular bus suspension hardware 11 and connected to the transmission line frame through the tubular bus suspension hardware 11.

[0048] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various changes can be made to the technical solutions of the present invention. These simple variations all fall within the scope of protection of the present invention.

Claims

1. A conductor connection structure for a high-voltage suspended tubular busbar, characterized in that: It comprises a main bus conductor (1), a main bus conductor (6), a transition bus conductor (2), a soft wire connecting device (3) and a limiting device (4); A transition bus conductor (2) is provided between the main bus conductor (1) and the main bus conductor (6), one end of the transition bus conductor (2) is inserted into the main bus conductor (1), and the other end of the transition bus conductor (2) is inserted into the main bus conductor (6), and a gap exists between the transition bus conductor (2) and the sleeved portion of the main bus conductor (1) and the main bus conductor (6); The opposite ends of the main bus conductor 1 (1) and the main bus conductor 2 (6) are both provided with a soft wire connection device (3), the soft wire connection device (3) comprises a hoop 1 (7) and a hoop 2 (8), a plurality of soft wires (9) are provided between the hoop 1 (7) and the hoop 2 (8), the length of the plurality of soft wires (9) is greater than the distance between the hoop 1 (7) and the hoop 2 (8), and the plurality of soft wires (9) are evenly distributed in a spherical structure; A soft wire connection device (3) is respectively provided at the connection between the main bus conductor 1 (1) and the main bus conductor 2 (6) and the transition bus conductor (2), wherein the hoop 1 (7) on one of the soft wire connection devices is sleeved on the outside of the main bus conductor 1 (1), and the hoop 2 (8) is sleeved on the transition bus conductor (2); the hoop 1 (7) on the other soft wire connection device is sleeved on the outside of the main bus conductor 2 (6), and the hoop 2 (8) is sleeved on the transition bus conductor (2), and the main bus conductor 1 (1), the transition bus conductor (2) and the main bus conductor 2 (6) are connected together through the two connection devices; The transition bus conductor (2) is extended into the main bus conductor (1) and the main bus conductor (6) at both ends thereof, and a limiting device (4) is respectively provided. The limiting device comprises a limiting slide groove provided on the side walls of the main bus conductor (1) and the main bus conductor (6) and a slider provided on the side wall of the transition bus conductor (2), and the slider is adapted to the limiting slide groove; the main bus conductor (1) and the main bus conductor (6) are slidably provided on the transition bus conductor (2).

2. The conductor connection structure of a high-voltage suspended tubular busbar according to claim 1, characterized in that: The invention also includes an energy consumption device, wherein the energy consumption device includes an energy consumption wire (5), the energy consumption wire (5) is arranged to penetrate the main bus conductor (1), the transition bus conductor (2) and the main bus conductor (6), and the energy consumption wire (5) is provided with connectors (10) at both ends, and the two connectors (10) are respectively arranged on the inner walls of the main bus conductor (1) and the main bus conductor (6).

3. The conductor connection structure of a high-voltage suspended tubular busbar according to claim 2, characterized in that: The connecting piece (10) is located at the center of the main bus conductor (1) and the main bus conductor (6).

4. The conductor connection structure of a high-voltage suspended tubular busbar according to claim 1, characterized in that: The main busbar conductor 1 (1) and the main busbar conductor 2 (6) have the same inner and outer diameters.

5. The conductor connection structure of a high-voltage suspended tubular busbar according to claim 4, characterized in that: The inner diameters of the main bus conductor 1 (1) and the main bus conductor 2 (6) and the outer diameter of the transition bus conductor (2) satisfy the following relationship: D wn =603.70*sin(0.001687*D nw -0.02152) Where D wn D is the inner diameter of main busbar conductor 1 and main busbar conductor 2, nw It is the outer diameter of the transition busbar conductor.

6. The conductor connection structure of a high-voltage suspended tubular busbar according to claim 4, characterized in that: The size of the hoop 1 (7) is adapted to the outer diameters of the main bus conductor 1 (1) and the main bus conductor 2 (6), and the size of the hoop 2 (8) is adapted to the outer diameter of the transition bus conductor (2).

7. A conductor connection structure for a high-voltage suspended tubular busbar according to any one of claims 1 to 6, characterized in that: The opposite ends of the main bus conductor 1 (1) and the main bus conductor 2 (6) are both sleeved with a tube bus suspension hardware (11), and are connected to the transmission line frame through the tube bus suspension hardware (11).

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