Vertically-installed series-connected resistor unit and circuit breaker closing resistor structure

Abstract

The utility model provides a vertically-installed series-connected resistor unit and a circuit breaker closing resistor structure, belonging to the field of circuit breakers, the vertically-installed series-connected circuit breaker closing resistor structure comprises at least two tank bodies, each tank body is internally provided with a vertically-installed series-connected resistor unit, all the resistor units which are vertically installed and connected in series are sequentially connected in series through an elastic electric connection module, the lower end of a cross-core insulating rod in each resistor unit which is vertically installed and connected in series is fixedly connected with a lower side conductor, and the upper end of the cross-core insulating rod sequentially penetrates through a conductive cushion block, a resistor disc, a conductive fixing plate and a first conductive spring from bottom to top and then is fixed to an upper side conductor. And all the resistor discs are spirally arranged and are sequentially connected in series through conductive pieces. The closing resistor structure has the beneficial effects that the hidden danger of deflection deformation of the cross-core insulating rod caused by the gravity of the resistor disc is eliminated, so that the reliability of the whole closing resistor structure is improved.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breakers, specifically relating to a vertically mounted series resistor unit and a circuit breaker closing resistor structure. Background Technology

[0002] In power systems, the closing resistor unit plays a crucial role, primarily in the following two aspects:

[0003] 1. Limiting overvoltage: During the operation of high-voltage transmission lines, especially when closing long unloaded lines, if the power supply voltage amplitude is reversed with the residual voltage of the line, the system parameters will change abruptly, which will cause L-C electromagnetic energy oscillations in the power grid, and may even lead to large overvoltages. To solve this problem, a resistor is usually connected between the circuit breaker contacts through auxiliary contacts, and the closing overvoltage and inrush current are limited by the resistor. That is, by putting the closing resistor in advance, it can absorb some of the electrical energy in the power grid and convert it into heat energy, thereby effectively weakening electromagnetic oscillations and suppressing overvoltages.

[0004] 2. Reduce the impact of inrush current on the switch: During the circuit breaker closing process, the sudden release of magnetic field energy of the inductive element will generate a large instantaneous current, namely inrush current. The switchgear will be impacted by this large current during this process, and may even be directly damaged in severe cases. The closing resistor can consume this part of the energy generated by the release of magnetic field energy, thereby reducing the impact of inrush current on the switchgear and protecting the switchgear from damage.

[0005] However, since existing closing resistor units often adopt a horizontal installation structure, they are easily affected by the weight of the resistor elements themselves, causing the through-core insulating rod used to install the resistor elements to deflect and deform, resulting in a series of adverse consequences: 1. The deflection and deformation of the through-core insulating rod may cause changes in the spacing between the resistor elements, thereby affecting the electrical performance of the resistor and causing deviations in the resistance value, thus reducing the efficiency of the closing resistor unit in the power system; 2. Uneven deflection and deformation may also cause local stress concentration in the resistor elements, accelerating the aging and damage of the resistor elements, shortening the service life of the resistor elements, and increasing the maintenance cost and replacement frequency of the equipment; 3. The through-core insulating rod is in a deformed state for a long time, and its own insulation performance may also be affected, posing a potential risk of insulation breakdown, which seriously threatens the safe and stable operation of the power system. Utility Model Content

[0006] The technical problem solved by this utility model is to provide a vertically mounted series resistor unit and a circuit breaker closing resistor structure, which can eliminate the risk of deflection deformation of the through-core insulating rod caused by the weight of the resistor itself, thereby improving the reliability of the entire closing resistor structure.

[0007] To address the aforementioned technical problems, this utility model provides a vertically mounted series-connected resistor unit, comprising an upper conductor and a lower conductor arranged opposite to each other, with at least two through-core insulating rods arranged in a circular array between the upper and lower conductors; the lower end of the through-core insulating rod is fixedly connected to the lower conductor, and the upper end of the through-core insulating rod passes through a conductive pad, a resistor sheet, a conductive fixing plate, and a conductive spring from bottom to top before being fixed to the upper conductor; the lower end of the conductive pad contacts the lower conductor, the lower end of the conductive spring contacts the conductive fixing plate, and the upper end of the conductive spring contacts the upper conductor; each through-core insulating rod has at least two resistor sheets, all of which are arranged in a spiral shape and connected in series via conductive components; the lowest resistor sheet contacts the conductive pad at the corresponding through-core insulating rod, and the highest resistor sheet contacts the conductive fixing plate at the corresponding through-core insulating rod; insulating pads are provided on both the upper and lower sides of any resistor sheet located between the lowest and highest resistor sheets. Since the structure provided by this utility model connects each resistor sheet vertically in a spiral, it can not only effectively eliminate the risk of deflection deformation of the through-core insulating rod caused by the weight of the resistor sheet itself, but also effectively shorten the length of the entire resistor unit, making it easier to install and debug.

[0008] Furthermore, both the lower mounting hole on the lower conductor and the upper mounting hole on the upper conductor for installing the through-core insulating rod are stepped holes. Locking rings are installed at both the lower and upper ends of the through-core insulating rod. The upper end of the locking ring at the lower end of the through-core insulating rod abuts against the stepped surface of the lower mounting hole, and the lower end of the locking ring at the upper end of the through-core insulating rod abuts against the stepped surface of the upper mounting hole, thereby achieving the fixation of the through-core insulating rod between the upper and lower conductors.

[0009] Furthermore, a lower connecting conductor is installed on one side of the lower conductor, and an upper connecting conductor is provided on one side of the upper conductor. The lower connecting conductor is electrically connected to the corresponding input / output conductor, and the upper connecting conductor is connected in series with the corresponding input / output conductor or other vertically mounted series resistor units.

[0010] Furthermore, a slot is provided on the side of the lower conductor, and a groove is formed on the wall of the slot. A ring-shaped conductive spring is installed in the groove. When the lower connecting conductor is inserted into the slot, the conductive spring abuts against the side wall of the lower connecting conductor, thereby ensuring that the lower connecting conductor can be stably connected to the lower conductor.

[0011] Furthermore, a conductive transition plate is installed on the bottom surface of the lower conductor, a shield is installed on the outer edge of the bottom surface of the conductive transition plate, an insulating platform is installed in the middle of the bottom surface of the conductive transition plate, and the circuit breaker is installed in the tank through the insulating platform.

[0012] On the other hand, this utility model also provides a vertically mounted series circuit breaker closing resistor structure, which includes at least two tanks, each tank having one of the above-mentioned vertically mounted series resistor units installed in it. All the vertically mounted series resistor units are connected in series sequentially through a flexible electrical connection module to form a circuit breaker closing resistor structure that meets the relevant resistance value requirements.

[0013] Furthermore, the flexible electrical connection module includes a bellows, with a basin-type insulator installed at both ends of the bellows. Each basin-type insulator is equipped with a mounting contact, and a flexible connecting conductor connects the mounting contacts at both ends. The end of the upper connecting conductor is equipped with a mounting contact, and the mounting contact is electrically connected to the corresponding mounting contact, thereby realizing the series connection between two adjacent tanks.

[0014] Furthermore, the lower connecting conductor is a flexible connecting conductor, and a second corrugated pipe is installed on the side of the tank. A second basin-type insulator is installed on the end of the second corrugated pipe away from the tank. An inlet and outlet connecting conductor is installed on the second basin-type insulator. The inlet and outlet connecting conductor is electrically connected to the lower connecting conductor, and the distance between the inlet and outlet connecting conductor and the tank can be adjusted by pulling the second corrugated pipe.

[0015] Furthermore, a lower cover plate is provided at the bottom of the tank, and a support conductor is installed at the upper end of the lower cover plate. The upper end of the support conductor is installed together with the insulating platform of the corresponding vertically mounted series resistor unit by fasteners, thereby realizing the installation of the vertically mounted series resistor unit in the tank.

[0016] Furthermore, an adjustment base is provided at the lower end of the lower cover plate, and the height of the tank can be adjusted through the adjustment base.

[0017] As can be seen from the above technical solutions, this utility model has the following advantages: The vertically mounted series resistor unit and circuit breaker closing resistor structure provided by this utility model connects each resistor sheet vertically in a spiral connection. This not only effectively eliminates the risk of deflection deformation of the through-core insulating rod caused by the weight of the resistor sheet itself, but also effectively shortens the length of the entire resistor unit, making it easier to install and debug. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the actual application of Embodiment 1 of this utility model;

[0020] Figure 2This is a schematic diagram of the resistor string structure in this utility model;

[0021] Figure 3 This is a schematic diagram of the series connection of two adjacent resistors in this utility model;

[0022] Figure 4 This is a schematic diagram of the upper conductor in this utility model;

[0023] Figure 5 This is a schematic diagram of the installation of the conductive spring 2 in this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the conductive spring II in this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of this utility model. Figure 1 ;

[0026] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of this utility model. Figure 2 .

[0027] In the diagram: 1. Basin insulator one; 2. Corrugated pipe one; 3. Tank body; 4. Basin insulator two; 5. Corrugated pipe two; 6. Incoming and outgoing conductors; 7. Assembly contact seat one; 8. Conductive transition plate; 9. Shielding; 10. Insulating platform; 11. Support conductor; 12. Adjusting base; 13. Lower connecting conductor; 14. Lower side conductor; 15. Conductive spring two; 16. Resistor string; 17. Upper side conductor; 18. Locking ring; 19. Conductive pad; 20. Through-core insulating rod; 21. Resistor sheet; 22. Conductive fixing plate; 23. Conductive spring one; 24. Conductive component; 25. Insulating pad; 26. Guide ring. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0029] Example 1

[0030] like Figures 1 to 6As shown, this embodiment provides a vertically mounted series resistor unit, which includes an insulating platform 10 for installation inside the tank 3 of a circuit breaker. The insulating platform 10 preferably has a frustum structure that is smaller at the top and larger at the bottom, and a conductive transition plate 8 is installed on the upper end of the insulating platform 10 by fasteners such as bolts. The conductive transition plate 8 is preferably an aluminum plate, and a shield 9 is installed on the outer edge of the bottom surface of the conductive transition plate 8, covering the outer side of the upper end of the insulating platform 10.

[0031] The upper end of the conductive transition plate 8 is fitted with a lower conductor 14 via bolts or other fasteners. A slot is provided on the side of the lower conductor 14, through which a lower connecting conductor 13 for electrically connecting the incoming and outgoing conductors 6 is inserted. Preferably, in this embodiment, a groove is formed circumferentially on the wall of the slot, and a ring-shaped conductive spring 15 is installed inside the groove. When the lower connecting conductor 13 is inserted into the slot, its sidewall abuts against the conductive spring 15, ensuring a stable connection between the lower connecting conductor 13 and the lower conductor 14. Furthermore, this invention can also form a guide groove circumferentially on the wall of the slot, and install an inner guide ring inside the guide groove. The inner ring of the guide ring has rounded corners, allowing it to guide the lower connecting conductor 13 when inserted into the slot, ensuring it is centered.

[0032] An upper conductor 17 is disposed above the lower conductor 14, and an upper connecting conductor for electrically connecting the incoming / outgoing conductors 6 or other resistor units is disposed on the side of the upper conductor 17. A contact seat 7 is mounted at the end of the upper connecting conductor. Simultaneously, at least two vertical through-core insulating rods 20 are arranged in a circumferential array between the upper conductor 17 and the lower conductor 14, and a string of resistor pieces 21 is disposed on each through-core insulating rod 20. Specifically, as... Figure 1 As shown, in this embodiment, a corresponding number of lower mounting holes for mounting the through-core insulating rod 20 are provided on the lower conductor 14, and a corresponding number of upper mounting holes for mounting the through-core insulating rod 20 are provided on the upper conductor 17. The lower mounting holes are stepped holes, with the upper holes being larger than the lower ones, and the upper mounting holes are stepped holes, with the upper holes being larger than the lower ones. After the lower end of the through-core insulating rod 20 extends into the lower mounting hole, a first locking ring 18 is fitted onto it, and the upper end of the locking ring 18 abuts against the stepped surface of the lower mounting hole, thereby fixing the through-core insulating rod 20 at the lower conductor 14. The upper end of the through-core insulating rod 20 passes through the lower conductor 14 and then passes through the conductive pad 19, the resistor 21, the conductive fixing plate 22, and the conductive spring 23 from bottom to top before extending into the upper mounting hole at the upper conductor 17. Subsequently, a second locking ring 18 is installed in the upper mounting hole, and the lower end of the locking ring 18 abuts against the stepped surface of the upper mounting hole, thereby fixing the through-core insulating rod 20 at the upper conductor 17.

[0033] like Figure 2 As shown, each through-core insulating rod 20 has at least two resistors 21 in its resistor string 16, and the number of resistors 21 on each through-core insulating rod 20 is the same. All resistors 21 on all through-core insulating rods 20 are arranged in a spiral shape and connected in series through conductive parts such as copper sheets 24. The lowest resistor 21 is in contact with the conductive pad 19 at the corresponding through-core insulating rod 20, and the highest resistor 21 is in contact with the conductive fixing plate 22 at the corresponding through-core insulating rod 20. Two insulating pads 25 are provided on the upper and lower sides of any resistor 21 located between the lowest and highest resistors 21. Meanwhile, the lower end of each conductive pad 19 is in contact with the lower conductor 14, and the conductive pad 19 is preferably made of aluminum. The thickness of the conductive pad 19 can be selected according to the setting position of each through-core insulating rod 20 to ensure that the resistive pieces 21 on each through-core insulating rod 20 can be arranged in an alternating manner, and to ensure the electrical connection between the lowermost resistive piece 21 and the lower conductor 14. The lower end of each conductive spring 23 is in contact with the conductive fixing plate 22, and the upper end of each conductive spring 23 is in contact with the upper conductor 17 to achieve the electrical connection between the uppermost resistive piece 21 and the upper conductor 17.

[0034] For example, when three vertical through-core insulating rods 20 are arranged in a circumferential array between the upper conductor 17 and the lower conductor 14, and each through-core insulating rod 20 is fitted with 13 resistive pieces 21, for ease of description, the three through-core insulating rods 20 can be named sequentially along the circumference as the first through-core insulating rod, the second through-core insulating rod, and the third through-core insulating rod, and the resistive pieces 21 on each through-core insulating rod 20 can be named sequentially from bottom to top as the first layer resistive piece, the second layer resistive piece, ..., the thirteenth layer resistive piece. At this time, the first layer resistive piece on the first through-core insulating rod is in contact with the conductive pad 19 at that location, and from the second layer resistive piece to the thirteenth layer resistive piece on the first through-core insulating rod, two layers of insulating pads 25 are provided on the upper and lower sides of any layer of resistive piece 21. These insulating pads 25 prevent direct contact and conductivity between adjacent layers of resistive pieces 21, and prevent direct contact and conductivity between the thirteenth layer resistive piece and the corresponding conductive fixing plate 22.

[0035] The height of each layer of resistor sheet 21 on the second through-core insulating rod is slightly higher than the height of the same layer of resistor sheet 21 on the first through-core insulating rod. The height of each layer of resistor sheet 21 on the second through-core insulating rod is slightly lower than the height of the layer above the same layer of resistor sheet 21 on the first through-core insulating rod. Moreover, for any layer of resistor sheet 21 from the first to the thirteenth layer on the second through-core insulating rod, two layers of insulating pads 25 are provided on the upper and lower sides. These insulating pads 25 prevent direct contact and conductivity between adjacent layers of resistor sheet 21, prevent direct contact and conductivity between the thirteenth layer of resistor sheet and the corresponding conductive fixing plate 22, and prevent direct contact and conductivity between the first layer of resistor sheet and the corresponding conductive pad 19.

[0036] The height of each layer of resistor sheet 21 on the third through-core insulating rod is slightly higher than the height of the same layer of resistor sheet 21 on the second through-core insulating rod. The height of each layer of resistor sheet 21 on the third through-core insulating rod is slightly lower than the height of the layer above the same layer of resistor sheet 21 on the second through-core insulating rod. The height of each layer of resistor sheet 21 on the third through-core insulating rod is slightly lower than the height of the layer above the same layer of resistor sheet 21 on the first through-core insulating rod. Moreover, the thirteenth layer of resistor sheet on the third through-core insulating rod is in direct contact with the conductive fixing plate 22 at that location. From the first to the twelfth layer of resistor sheet on the third through-core insulating rod, two layers of insulating pads 25 are provided on the upper and lower sides of any layer of resistor sheet 21. These insulating pads 25 prevent direct contact and conductivity between adjacent layers of resistor sheet 21, and also prevent direct contact and conductivity between the first layer of resistor sheet and the corresponding conductive pad 19.

[0037] Simultaneously, the first layer of resistive elements on the first through-core insulating rod and the first layer of resistive elements on the second through-core insulating rod are connected in series via conductive element 24; the first layer of resistive elements on the second through-core insulating rod and the first layer of resistive elements on the third through-core insulating rod are connected in series via conductive element 24; the first layer of resistive elements on the third through-core insulating rod and the second layer of resistive elements on the first through-core insulating rod are connected in series via conductive element 24; the second layer of resistive elements on the first through-core insulating rod and the second layer of resistive elements on the second through-core insulating rod are connected in series via conductive element 24; and the second layer of resistive elements on the second through-core insulating rod and the second layer of resistive elements on the third through-core insulating rod are connected in series via conductive element 24. The resistors are connected in series via conductive elements 24, ... The twelfth layer resistor on the third through-core insulating rod is connected in series with the thirteenth layer resistor on the first through-core insulating rod via conductive elements 24, the thirteenth layer resistor on the first through-core insulating rod is connected in series with the thirteenth layer resistor on the second through-core insulating rod via conductive elements 24, and the thirteenth layer resistor on the second through-core insulating rod is connected in series with the thirteenth layer resistor on the third through-core insulating rod via conductive elements 24, thereby connecting all the resistors 21 on all the through-core insulating rods 20 in series sequentially via conductive elements 24 such as copper sheets, and arranged in a spiral shape.

[0038] Example 2

[0039] like Figure 7 , Figure 8 As shown, this embodiment 2 provides a vertically mounted series circuit breaker closing resistor structure, which includes at least two tanks 3, and each tank 3 is equipped with a vertically mounted series resistor unit as described in embodiment 1. All the vertically mounted series resistor units are connected in series sequentially through a flexible electrical connection module to form a circuit breaker closing resistor structure that meets the relevant resistance value requirements.

[0040] Specifically, such as Figure 1 As shown, a lower cover plate is installed at the bottom of the tank body 3 by bolts and other fasteners, and a support conductor 11 is installed at the upper end of the lower cover plate. The upper end of the support conductor 11 is installed together with the insulating platform 10 of the corresponding vertically connected series resistor unit by bolts and other fasteners, thereby realizing the installation of the vertically connected series resistor unit in the tank body 3. An adjusting base 12 is provided at the lower end of the lower cover plate. An adjusting bolt is provided around the edge of the mounting plate at the upper end of the adjusting base 12. The adjusting bolt passes through the tank body 3, the lower cover plate, and the mounting plate of the adjusting base 12 from top to bottom. The upper end of the adjusting bolt passes through the tank body 3 from bottom to top and is threaded with at least one nut. Two nuts are threadedly connected to the middle part of the adjusting bolt between the lower cover plate and the adjusting base 12, with the upper nut abutting against the bottom surface of the lower cover plate and the lower nut abutting against the top surface of the mounting plate of the adjusting base 12. The lower end of the adjusting bolt passes through the adjusting base 12 from top to bottom and is threaded with at least one nut, which abuts against the bottom surface of the mounting plate of the adjusting base 12. This allows the height of the tank body 3 to be adjusted by adjusting the relative positions of the adjusting bolt and the nut at the adjusting base 12.

[0041] like Figure 7 As shown, the flexible electrical connection module includes a bellows 2, with a basin-type insulator 1 installed at both ends of the bellows 2. Each basin-type insulator 1 is equipped with a mounting contact 2, and a flexible connecting conductor connects the mounting contacts 2 at both ends. A mounting contact 7 is installed at the end of the upper connecting conductor. The mounting contact 7 is electrically connected to the corresponding mounting contact 2, thereby realizing the series connection between two adjacent tanks 3.

[0042] Furthermore, as a preferred embodiment, the lower connecting conductor 13 can be made of a flexible connecting conductor, and a corrugated pipe 2 5 can be installed on the side of the tank body 3. A basin-type insulator 2 4 can be installed on the end of the corrugated pipe 2 5 away from the tank body 3. The incoming and outgoing line connecting conductors can be installed on the basin-type insulator 2 4, and the incoming and outgoing line connecting conductors can be electrically connected to the lower connecting conductor 13. This allows the distance between the incoming and outgoing line connecting conductors and the tank body 3 to be adjusted by pulling the corrugated pipe 2 5, thereby meeting the corresponding wiring requirements.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vertically mounted series-connected resistor unit, characterized in that, The system includes an upper conductor (17) and a lower conductor (14) arranged opposite to each other. At least two through-core insulating rods (20) are arranged in a circular array between the upper conductor (17) and the lower conductor (14). The lower end of each through-core insulating rod (20) is fixedly connected to the lower conductor (14), and the upper end of each through-core insulating rod (20) passes through a conductive pad (19), a resistor (21), a conductive fixing plate (22), and a conductive spring (23) from bottom to top before being fixed to the upper conductor (17). The lower end of the conductive pad (19) contacts the lower conductor (14), and the lower end of the conductive spring (23) contacts the conductive fixing plate (22). The upper end of spring 1 (23) is in contact with the upper conductor (17); there are at least two resistor pieces (21) on each through-core insulating rod (20), and all resistor pieces (21) are arranged in a spiral shape and connected in series through conductive parts (24); the lowermost resistor piece (21) is in contact with the conductive pad (19) at the corresponding through-core insulating rod (20), and the uppermost resistor piece (21) is in contact with the conductive fixing plate (22) at the corresponding through-core insulating rod (20). Insulating pads (25) are provided on both the upper and lower sides of any resistor piece (21) located between the lowermost resistor piece (21) and the uppermost resistor piece (21).

2. The vertically mounted series-connected resistance unit according to claim 1, characterized in that, The lower mounting hole on the lower conductor (14) for installing the through-core insulating rod (20) and the upper mounting hole on the upper conductor (17) for installing the through-core insulating rod (20) are both stepped holes. Locking rings (18) are installed at both the lower and upper ends of the through-core insulating rod (20). The upper end of the locking ring (18) at the lower end of the through-core insulating rod (20) abuts against the stepped surface of the lower mounting hole, and the lower end of the locking ring (18) at the upper end of the through-core insulating rod (20) abuts against the stepped surface of the upper mounting hole.

3. The vertically mounted series-connected resistance unit according to claim 1, wherein A lower connecting conductor (13) is installed on one side of the lower conductor (14), and an upper connecting conductor is provided on one side of the upper conductor (17).

4. The vertically mounted series-connected resistance unit according to claim 3, characterized in that, The lower conductor (14) has a slot on its side, and a groove is formed on the wall of the slot. A ring-shaped conductive spring (15) is installed in the groove. When the lower connecting conductor (13) is inserted into the slot, the conductive spring (15) abuts against the side wall of the lower connecting conductor (13).

5. The vertically mounted series-connected resistance unit according to claim 1, wherein A conductive transition plate (8) is installed on the bottom surface of the lower conductor (14), a shield (9) is installed on the outer edge of the bottom surface of the conductive transition plate (8), and an insulating platform (10) is installed in the middle of the bottom surface of the conductive transition plate (8).

6. A vertical stringing circuit breaker closing resistor structure, characterized in that, It includes at least two tanks (3), each tank (3) is equipped with a vertically mounted series resistor unit according to any one of claims 1-5, and all the vertically mounted series resistor units are connected in series in sequence through a flexible electrical connection module.

7. The vertical mounted series connected recloser closing resistor structure of claim 6, wherein, The flexible electrical connection module includes a corrugated pipe (2), with a basin insulator (1) installed at both ends of the corrugated pipe (2). Each basin insulator (1) is equipped with a mounting contact (2), and a flexible connecting conductor is connected between the mounting contacts (2) at both ends. The end of the upper connecting conductor is equipped with a mounting contact (7), and the mounting contact (1) is electrically connected to the corresponding mounting contact (2).

8. The vertical mounted series connected recloser closing resistor structure of claim 6, wherein, The lower connecting conductor (13) is a flexible connecting conductor. A corrugated pipe (5) is installed on the side of the tank (3). A basin-type insulator (4) is installed on the end of the corrugated pipe (5) away from the tank (3). An inlet and outlet connecting conductor is installed on the basin-type insulator (4). The inlet and outlet connecting conductor is electrically connected to the lower connecting conductor (13).

9. The vertical mounted series connected recloser closing resistor structure of claim 6, wherein, The bottom of the tank (3) is provided with a lower cover plate, and a support conductor (11) is installed on the upper end of the lower cover plate. The upper end of the support conductor (11) is installed together with the insulating platform (10) of the corresponding vertically connected series resistor unit by fasteners.

10. The vertical mounted series connected recloser closing resistor structure of claim 6, wherein, An adjustment base (12) is provided at the lower end of the lower cover plate.

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