Damping capacitor fixing mechanism and converter valve damping capacitor group and installation method thereof

Abstract

A damping capacitor fixing mechanism and a converter valve damping capacitor group and an installation method thereof, wherein the damping capacitor fixing mechanism comprises: a capacitor fixing sleeve for accommodating a capacitor, wherein the capacitor is installed in the capacitor fixing sleeve by a snap-on structure. The capacitor is fixed by the capacitor fixing sleeve, which can effectively solve the problem that the method of fixing the capacitor by welding a fastening stud at the bottom of a cylindrical capacitor in the prior art has poor installation reliability and seriously affects the service life of the damping capacitor.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, and mainly to a damping capacitor fixing mechanism and a converter valve damping capacitor group and an installation method thereof. Background Art

[0002] UHV DC converter valve is the core equipment of DC power transmission. When the reverse recovery current of the converter valve thyristor decays from the peak value to 0, an induced overshoot voltage will be generated in the leakage inductance of the converter transformer. The induced overshoot voltage and the base frequency voltage of the converter transformer will act together on both ends of the thyristor, causing the thyristor to break down due to reverse overvoltage. By connecting damping capacitors in parallel at both ends of the thyristor, the amplitude of the overshoot voltage can be weakened to ensure the safe operation of the thyristor.

[0003] In the prior art, the capacitor is fixed by welding a fastening stud at the bottom of the cylindrical capacitor. However, since the outer shell of the capacitor is a thin-walled structure, when processing or welding fastening connectors on the outer shell of the capacitor, if the capacitor is affected by external forces during transportation or operation, such as external vibration excitation, it is very easy to cause stress concentration problems at the connection position between the stud and the thin shell, thereby reducing the operating life of the capacitor. Therefore, the prior art lacks a fixing mechanism that can reliably fix the damping capacitor. Summary of the invention

[0004] Therefore, the present invention aims to provide a damping capacitor fixing mechanism and a converter valve damping capacitor group and an installation method thereof, so as to solve the problem that the prior art method of fixing the capacitor by welding fastening studs at the bottom of the cylindrical capacitor has poor installation reliability and seriously affects the service life of the damping capacitor. The present application provides a damping capacitor fixing mechanism, comprising:

[0005] The capacitor fixing sleeve is used to accommodate a capacitor, and the capacitor is installed in the capacitor fixing sleeve through a clamping structure.

[0006] Optionally, the capacitor fixing sleeve comprises: a capacitor accommodating base adapted to the shape of the capacitor, wherein the capacitor accommodating base is provided with a zoom groove in its length direction; the zoom groove drives the outer peripheral wall of the capacitor accommodating base to expand and contract in its radial direction to clamp the capacitor;

[0007] The clamping structure is a tightening throat hoop sleeved on the capacitor accommodating base in the circumferential direction thereof, and the tightening throat hoop drives the capacitor accommodating base to clamp the capacitor.

[0008] Optionally, there are at least two zoom grooves, and at least two of the zoom grooves are arranged in the circumferential direction of the capacitor accommodating base; and / or,

[0009] The capacitor accommodating base is made of heat-conductive metal; and / or,

[0010] The fastening throat hoop is made of metal.

[0011] Optionally, the damping capacitor fixing mechanism further comprises:

[0012] The insulating reinforcement plate, the capacitor fixing sleeve is installed on the insulating reinforcement plate; the insulating reinforcement plate is provided with strip-shaped hollow holes for blocking the discharge channel along the surface of the insulating reinforcement plate.

[0013] Optionally, a metal pad for raising the capacitor fixing sleeve to increase the creepage distance between the capacitor fixing sleeve and the insulation reinforcement board is provided on a side of the capacitor fixing sleeve facing the insulation reinforcement board.

[0014] Optionally, the insulation reinforcement plate is glass fiber reinforced resin; and / or,

[0015] The insulating reinforcement plate is provided with a fixing hole, and the capacitor accommodating base is threadedly fastened to the fixing hole through a metal stud.

[0016] Optionally, the damping capacitor fixing mechanism further comprises:

[0017] A capacitor support frame, the capacitor support frame comprising: a fixed beam, a support frame arranged between two adjacent fixed beams for fixing the insulation reinforcement plate, and a connector for connecting the fixed beam and the support frame;

[0018] The connecting piece is a triangular metal connecting piece bent into a Z-shaped structure, and the triangular metal connecting piece is respectively connected to the fixed crossbeam and the supporting frame through an insulating piece.

[0019] Optionally, at least two capacitor fixing sleeves are provided on the insulating reinforcement plate, and an insulating gap is provided between adjacent capacitor fixing sleeves.

[0020] Optionally, the capacitor fixing sleeve is made of a material with high thermal conductivity and is provided with heat dissipation holes.

[0021] A converter valve damping capacitor bank, comprising:

[0022] capacitors, and

[0023] Damping capacitor fixing mechanism.

[0024] Optionally, the surface of the capacitor is coated with epoxy resin polymer material as an insulating medium; and / or,

[0025] The capacitors are arranged in a staggered manner along the midline of the insulating reinforcement plate in the length direction, and the capacitors correspond one-to-one to the thyristors in the thyristor press-fitting unit.

[0026] A method for installing a converter valve damping capacitor bank comprises the following steps:

[0027] S1, install the capacitor in the capacitor fixing sleeve;

[0028] S2, install the capacitor fixing sleeve on the insulation reinforcement plate.

[0029] The technical solution of the present invention has the following advantages:

[0030] 1. The damping capacitor fixing mechanism provided by the present invention comprises: a capacitor fixing sleeve for accommodating a capacitor, wherein the capacitor is installed in the capacitor fixing sleeve through a snap-fit ​​structure.

[0031] In the prior art, the method of fixing the capacitor is: welding a fastening stud at the bottom of the cylindrical capacitor structure so as to fix the capacitor in the installation position through a threaded structure. However, since the shell of the capacitor is a thin-walled structure, when processing or welding fastening connectors on the shell of the capacitor, if the capacitor is affected by external forces during transportation or operation, such as external vibration excitation, it is very easy to cause stress concentration problems at the connection position between the stud and the thin shell. Therefore, the above fixing method will seriously affect the reliability of the capacitor and reduce its service life. In order to solve the above problems, the present invention fixes the capacitor to the capacitor fixing sleeve by clamping, and then fixes the capacitor to the specified installation position through the capacitor fixing sleeve. Because the technical solution provided by the present invention does not require the stud to be fixed on the thin shell of the capacitor. Moreover, the thickness and structure of the capacitor fixing sleeve will not be limited by the capacitor structure, so the stud and other connectors can be firmly and reliably fixed to the above capacitor fixing sleeve, thereby ensuring the installation strength of the capacitor fixing sleeve and avoiding the problem of insufficient fixing reliability of the capacitor during transportation or operation.

[0032] 2. The damping capacitor fixing mechanism provided by the present invention, the capacitor fixing sleeve includes: a capacitor accommodating base adapted to the shape of the capacitor, the capacitor accommodating base is provided with a zoom groove in its length direction; the zoom groove drives the outer peripheral wall of the capacitor accommodating base to expand and contract along its radial direction to clamp the capacitor; the clamping structure is a tightening throat clamp sleeved on the capacitor accommodating base in its circumferential direction, and the tightening throat clamp drives the capacitor accommodating base to clamp the capacitor.

[0033] The above-mentioned scaling groove can ensure that when the capacitor is installed in the capacitor fixing sleeve and fixed, the capacitor fixing sleeve has a certain elasticity in the radial direction, so that the capacitor can be effectively clamped and fixed during the tightening of the fastening throat hoop. Moreover, the fastening form of the fastening throat hoop can effectively ensure the equipotential requirement between the set base and the metal shell of the capacitor.

[0034] 3. The damping capacitor fixing mechanism provided by the present invention has at least two zoom grooves, and at least two of the zoom grooves are arranged in the circumferential direction of the capacitor accommodating base; the above-mentioned multiple zoom grooves can effectively ensure that each part of the capacitor fixing sleeve in the circumferential direction can be tightly fitted and fixedly connected with the capacitor, thereby firmly and reliably fixing the capacitor.

[0035] 4. In the damping capacitor fixing mechanism provided by the present invention, the capacitor accommodating base is made of a heat-conductive metal material; the fastening throat clamp is made of a metal material. By setting the capacitor accommodating base to be a metal material with a high thermal conductivity, heat dissipation holes can also be designed on the cylinder wall of the capacitor accommodating base, while ensuring mechanical strength, the heat dissipation effect of the capacitor is ensured.

[0036] 5. The damping capacitor fixing mechanism provided by the present invention further includes: an insulating reinforcement plate, the capacitor fixing sleeve is installed on the insulating reinforcement plate; the insulating reinforcement plate is provided with strip-shaped hollow holes for blocking the discharge channel along the surface of the insulating reinforcement plate.

[0037] By setting strip-shaped hollow holes on the insulation reinforcement plate, the above hollow grooves can block the arc channel in the direction of the electric field, thereby ensuring the electrical insulation performance of the product. In addition, the above insulation reinforcement plate uses glass fiber reinforced resin, which can provide structural strength for the capacitor bank and reliable installation strength for the capacitor, while ensuring electrical insulation properties.

[0038] 6. In the damping capacitor fixing mechanism provided by the present invention, a metal pad for raising the capacitor fixing sleeve to increase the creepage distance between the capacitor fixing sleeve and the insulating reinforcement plate is provided on the side of the capacitor fixing sleeve facing the insulating reinforcement plate.

[0039] By arranging a metal pad at the bottom of the capacitor fixing sleeve, the creepage distance between the capacitor fixing sleeve and the insulation reinforcement plate can be effectively increased, thereby ensuring the safety performance of the capacitor bank.

[0040] 7. The damping capacitor fixing mechanism provided by the present invention has a fixing hole on the insulating reinforcement plate, and the capacitor accommodating base is threadedly connected to the fixing hole through a metal stud. The multiple metal studs installed on the capacitor accommodating base can effectively and reliably fix it on the insulating reinforcement plate. The positioning of the multiple metal studs can ensure that the damping capacitor will not shake in the height direction, and ensure the connection strength of the capacitor accommodating base.

[0041] 8. The damping capacitor fixing mechanism provided by the present invention also includes: a capacitor support frame, the capacitor support frame includes: a fixed beam, a support frame arranged between two adjacent fixed beams for fixing the insulating reinforcement plate, and a connecting piece for connecting the fixed beam and the support frame; the connecting piece is a triangular metal connecting piece bent into a Z-shaped structure, and the triangular metal connecting piece is respectively connected to the fixed beam and the support frame through an insulating piece.

[0042] The insulating reinforcement plate can be firmly and reliably supported and fixed by the supporting frame. Moreover, the triangular metal connector is fixed to the fixed beam by metal bolts. The above structure can provide stable mechanical support for the capacitor bank. Moreover, the fixed beam can also be provided with multiple sets of supporting frames according to actual needs, or the installation position of the insulating reinforcement plate can be adjusted simply and quickly.

[0043] 9. In the damping capacitor fixing mechanism provided by the present invention, at least two capacitor fixing sleeves are arranged on the insulating reinforcement plate, and an insulating gap is arranged between adjacent capacitor fixing sleeves. The insulating gap uses air as the insulating medium to effectively ensure the insulation between adjacent capacitor fixing sleeves.

[0044] 10. The damping capacitor fixing mechanism provided by the present invention has the capacitor surface coated with epoxy resin polymer material as an insulating medium. The epoxy resin polymer material and the insulating gap effectively prevent the unreasonable voltage distribution problem caused by the complex voltage form in the composite insulating structure.

[0045] 11. The converter valve damping capacitor group provided by the present invention, wherein the capacitors are arranged in a staggered manner along the midline of the length direction of the insulating reinforcement plate, and the capacitors correspond one-to-one to the thyristors in the thyristor press-fit unit.

[0046] The staggered arrangement of the capacitors not only ensures that the capacitors are connected to the thyristors in the thyristor press-fit unit in a one-to-one manner, but also ensures that there is a sufficient insulation distance between adjacent capacitors, thereby ensuring the safety performance of the capacitor bank. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 A schematic diagram of the three-dimensional structure of a converter valve damping capacitor group provided by the present invention;

[0049] Figure 2 A schematic diagram of the connection structure between the insulation reinforcement plate and the capacitor support frame provided by the present invention;

[0050] Figure 3 A schematic diagram of the connection between the capacitor and the capacitor fixing sleeve provided by the present invention;

[0051] Figure 4 A schematic diagram of assembling the capacitor and the capacitor fixing sleeve provided by the present invention;

[0052] Figure 5 A schematic diagram of the three-dimensional structure of a capacitor fixing sleeve provided by the present invention;

[0053] Figure 6 A schematic diagram of the connection between the capacitor and the insulation reinforcement plate provided by the present invention;

[0054] Figure 7 A top view of the insulation reinforcement plate provided by the present invention.

[0055] Description of reference numerals:

[0056] 1-capacitor fixing sleeve; 2-capacitor; 3-zooming slot; 4-fastening throat clamp; 5-insulating reinforcement plate; 6-strip hollow hole; 7-metal pad; 8-fixing hole; 9-metal stud; 10-capacitor support frame; 11-fixing beam; 12-support frame; 13-connector. DETAILED DESCRIPTION

[0057] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0061] Example 1

[0062] A damping capacitor fixing mechanism, such as Figure 1 and Figure 6 As shown, it includes:

[0063] Capacitor fixing sleeve 1, such as Figures 3 to 5As shown, the capacitor fixing sleeve 1 is used to accommodate the capacitor 2, and the capacitor 2 is installed in the capacitor fixing sleeve 1 through a clamping structure; the capacitor fixing sleeve 1 includes: a capacitor accommodating base adapted to the shape of the capacitor 2, and the capacitor accommodating base is provided with a zoom groove 3 in its length direction; the zoom groove 3 drives the outer peripheral wall of the capacitor accommodating base to expand and contract along its radial direction to clamp the capacitor 2; the present invention fixes the capacitor 2 in the capacitor fixing sleeve 1 by clamping, and then fixes the capacitor 2 in the specified installation position through the capacitor fixing sleeve 1. Because the technical solution provided by the present invention does not need to fix the stud on the thin shell of the capacitor 2. Moreover, the thickness and structure of the capacitor fixing sleeve 1 will not be limited by the structure of the capacitor 2, so the stud and other connecting parts can be firmly and reliably fixed to the above-mentioned capacitor fixing sleeve 1, thereby ensuring the installation strength of the capacitor fixing sleeve 1. In this embodiment, the capacitor accommodating base is made of heat-conductive metal material, and heat dissipation holes are also provided on it. By setting the capacitor accommodating base to be a metal material with high thermal conductivity, and also designing heat dissipation holes on the cylinder wall of the capacitor accommodating base, the heat dissipation effect of the capacitor 2 is guaranteed while ensuring mechanical strength. In this embodiment, the capacitor fixing sleeve 1 is provided with a metal pad 7 on the side facing the insulating reinforcement plate 5 for raising the capacitor fixing sleeve 1 to increase the creepage distance between the capacitor fixing sleeve 1 and the insulating reinforcement plate 5. The above-mentioned metal pad 7 can effectively increase the creepage distance between the capacitor fixing sleeve 1 and the insulating reinforcement plate 5, thereby ensuring the safety performance of the capacitor group; in this embodiment, at least two of the capacitor fixing sleeves 1 are provided on the insulating reinforcement plate 5, and an insulating gap is provided between adjacent capacitor fixing sleeves 1. The above-mentioned insulating gap uses air as the insulating medium to effectively ensure insulation between adjacent capacitor fixing sleeves 1;

[0064] The clamping structure, the tightening throat hoop 4 is made of metal and is used to install the capacitor 2 in the capacitor fixing sleeve 1; wherein, the number of the scaling grooves 3 is 6, and the multiple scaling grooves 3 are evenly arranged in the circumferential direction of the capacitor accommodating base. The clamping structure is a tightening throat hoop 4 sleeved on the circumferential direction of the capacitor accommodating base, and the tightening throat hoop 4 drives the capacitor accommodating base to clamp the capacitor 2; the multiple scaling grooves 3 can effectively ensure that each part of the capacitor fixing sleeve 1 in the circumferential direction can be tightly fitted and fixedly connected with the capacitor 2, and the capacitor 2 can be firmly and reliably fixed;

[0065] Insulation reinforcement plate 5, the insulation reinforcement plate 5 is a glass fiber reinforced resin, such as Figure 2 and Figure 7As shown, the capacitor fixing sleeve 1 is installed on the insulating reinforcement plate 5; the insulating reinforcement plate 5 is provided with a strip-shaped hollow hole 6 for blocking the discharge channel along the surface of the insulating reinforcement plate 5. In addition, the insulating reinforcement plate 5 is provided with a fixing hole 8, and the capacitor accommodating base is threadedly fastened to the fixing hole 8 through a metal stud 9; by providing the strip-shaped hollow hole 6 on the insulating reinforcement plate 5, the above-mentioned hollow groove form can block the arc channel in the direction of the electric field, thereby ensuring the electrical insulation performance of the product. Moreover, the above-mentioned insulating reinforcement plate 5 adopts glass fiber or glass cloth reinforced material, which can provide structural strength for the capacitor group and reliable installation strength for the capacitor, while ensuring electrical insulation characteristics;

[0066] Capacitor support frame 10, such as Figure 2 , Figure 6 and Figure 7 As shown, the capacitor support frame 10 includes: a fixed beam 11, a support frame 12 arranged between two adjacent fixed beams 11 for fixing the insulating reinforcement plate 5, and a connector 13 for connecting the fixed beam 11 and the support frame 12; the connector 13 is a triangular metal connector bent into a Z-shaped structure, and the triangular metal connector is respectively connected to the fixed beam 11 and the support frame 12 through an insulating member.

[0067] A converter valve damping capacitor bank, comprising:

[0068] Capacitor 2, the surface of the capacitor 2 is coated with epoxy resin polymer material as an insulating medium;

[0069] Damping capacitor fixing mechanism.

[0070] In this embodiment, if Figure 6 As shown, the capacitors 2 are arranged in a staggered manner along the midline of the length direction of the insulating reinforcement plate 5, and the capacitors 2 correspond one-to-one to the thyristors in the thyristor press-fit unit.

[0071] A method for installing a converter valve damping capacitor bank comprises the following steps:

[0072] S1, install the capacitor 2 in the capacitor fixing sleeve 1;

[0073] S2, installing the capacitor fixing sleeve 1 on the insulating reinforcement plate 5.

[0074] Of course, the structure of the capacitor fixing sleeve 1 is not specifically limited in this embodiment. In other embodiments, the capacitor fixing sleeve 1 may also be a cylindrical cavity that matches the shape of the capacitor 2 and is sleeved on the capacitor 2 .

[0075] Of course, in this embodiment, the structure of the clamping structure connecting the capacitor 2 and the capacitor fixing sleeve 1 is not specifically limited. In other embodiments, the capacitor 2 and the capacitor fixing sleeve 1 are fixedly connected by hooks and buckles respectively provided thereon.

[0076] Of course, the number and arrangement of the zoom grooves 3 are not specifically limited in this embodiment. In other embodiments, there are three zoom grooves 3, and the three zoom grooves 3 are arranged in the circumferential direction of the capacitor accommodating base and extend toward the length direction of the capacitor accommodating base.

[0077] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A damping capacitor fixing mechanism, characterized in that: include: A capacitor fixing sleeve (1) for accommodating a capacitor (2), wherein the capacitor (2) is installed in the capacitor fixing sleeve (1) via a clamping structure; An insulating reinforcement plate (5), the capacitor fixing sleeve (1) being mounted on the insulating reinforcement plate (5); the insulating reinforcement plate (5) being provided with strip-shaped hollow holes (6) for blocking the discharge channel along the surface of the insulating reinforcement plate (5); the insulating reinforcement plate (5) being made of glass fiber reinforced resin; The capacitor fixing sleeve (1) is provided with a metal pad (7) on one side thereof facing the insulating reinforcement plate (5) for raising the capacitor fixing sleeve (1) to increase the creepage distance between the capacitor fixing sleeve (1) and the insulating reinforcement plate (5).

2. The damping capacitor fixing mechanism according to claim 1, characterized in that: The capacitor fixing sleeve (1) comprises: a capacitor accommodating base adapted to the shape of the capacitor (2), the capacitor accommodating base being provided with a zoom groove (3) in its length direction; the zoom groove (3) enables the outer peripheral wall of the capacitor accommodating base to be driven to expand and contract in its radial direction to clamp the capacitor (2); The clamping structure is a tightening throat hoop (4) sleeved on the capacitor accommodating base in the circumferential direction thereof, and the tightening throat hoop (4) drives the capacitor accommodating base to clamp the capacitor (2).

3. The damping capacitor fixing mechanism according to claim 2, characterized in that: There are at least two zoom grooves (3), and at least two of the zoom grooves (3) are arranged in the circumferential direction of the capacitor accommodating base; and / or, The capacitor accommodating base is made of heat-conductive metal; and / or, The fastening throat hoop (4) is made of metal.

4. The damping capacitor fixing mechanism according to claim 2, characterized in that: The insulating reinforcement plate (5) is provided with a fixing hole (8), and the capacitor accommodating base is threadedly fastened to the fixing hole (8) via a metal stud (9).

5. The damping capacitor fixing mechanism according to claim 1, characterized in that: Also includes: A capacitor support frame (10), the capacitor support frame (10) comprising: a fixed crossbeam (11), a support frame (12) arranged between two adjacent fixed crossbeams (11) for fixing the insulation reinforcement plate (5), and a connecting piece (13) for connecting the fixed crossbeam (11) and the support frame (12); The connecting piece (13) is a triangular metal connecting piece bent into a Z-shaped structure, and the triangular metal connecting piece is respectively connected to the fixed crossbeam (11) and the supporting frame (12) via an insulating piece.

6. The damping capacitor fixing mechanism according to claim 1, characterized in that: At least two capacitor fixing sleeves (1) are arranged on the insulating reinforcement plate (5), and an insulating gap is arranged between adjacent capacitor fixing sleeves (1).

7. The damping capacitor fixing mechanism according to claim 1 or 2, characterized in that: The capacitor fixing sleeve (1) is made of a material with high thermal conductivity and is also provided with heat dissipation holes.

8. A converter valve damping capacitor bank, characterized in that: include: Capacitor (2), and The damping capacitor fixing mechanism according to any one of claims 1 to 7.

9. The converter valve damping capacitor bank according to claim 8, characterized in that: The surface of the capacitor (2) is coated with an epoxy resin polymer material as an insulating medium; and / or, The capacitors (2) are arranged in a staggered manner along the midline of the insulating reinforcement plate (5) in the length direction thereof, and the capacitors (2) correspond one-to-one to the thyristors in the thyristor press-fit unit.

10. A method for installing a converter valve damping capacitor bank according to claim 8 or 9, characterized in that: The following steps are involved: S1, installing the capacitor (2) in the capacitor fixing sleeve (1); S2, install the capacitor fixing sleeve (1) on the insulating reinforcement plate (5).

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