CN110875597A

CN110875597A - Horizontal thyristor valve group valve module

Info

Publication number: CN110875597A
Application number: CN201810993467.9A
Authority: CN
Inventors: 李成博; 宋戈; 王超; 李钊; 杨懿功; 徐敏
Original assignee: NR Electric Co Ltd; NARI Group Corp
Current assignee: NR Electric Co Ltd; NARI Group Corp
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-03-10

Abstract

The invention relates to a horizontal thyristor valve group module which comprises a shielding cover component, a thyristor component, a resistor component, a reactor component, a capacitor component, a water pipe component and an optical cable groove component, wherein the shielding cover component is arranged on the upper surface of the thyristor component; the shielding cover assembly comprises a shielding cover, an insulator and a metal beam; the thyristor component comprises a thyristor unit, a thyristor trigger unit and a radiator; the water pipe assembly consists of a main water pipe and a branch water pipe, and the water pipe is arranged on the metal frame through an insulating support; the horizontal thyristor valve group module adopts a three-dimensional structure design, and has the advantages of simple and neat wiring and clear water path and small occupied area through layered arrangement.

Description

Horizontal thyristor valve group valve module

Technical Field

The invention belongs to the technical field of power electronics, and particularly relates to a horizontal thyristor valve group module.

Background

The highest voltage grade applied in the domestic direct-hanging SVC technology is 66kV, more generally 35kV and 10kV, and the structure is a vertical structure. Although the quality of the power grid is improved to a great extent, the quality is still unsatisfactory in the aspects of construction cost and line loss, and the vertical structure has great limitation, namely the height cannot exceed a certain limit value, otherwise, the structural stability cannot be ensured.

The above description means that the conventional SVC technology needs to be continuously upgraded and improved. The direct-hanging 110kV TCR thyristor valve block is used as the key technology of the direct-hanging SVC with the highest voltage level in China at present, the application of the direct-hanging 110kV TCR thyristor valve block can greatly improve the reactive compensation precision of a power supply system, and effectively improve the management speed of power grid harmonic waves. Meanwhile, the direct-hanging SVC with a high voltage level can reduce a large amount of occupied area and construction cost, and due to the improvement of the direct-hanging voltage level, under the condition of the same compensation capacity, the phase current of the SVC valve bank is greatly reduced, and a large amount of loss is reduced.

Disclosure of Invention

The invention aims to provide a novel thyristor valve module arrangement scheme, which aims to solve the problem of height limitation of a vertical SVC valve bank, reduce the floor area, improve the voltage level of the valve bank and adapt to wider working occasions.

In order to achieve the purpose, the invention adopts the following technical scheme: a valve module of a horizontal thyristor valve group comprises a shielding case component 1, a thyristor component 2, a resistor component 3, a reactor component 5, a capacitor component 4, a water pipe component 6 and a cable groove component 7; the shielding cover assembly consists of a plurality of shielding covers 1-1, adapters 1-2, a plurality of metal beams 1-3, insulators 1-4, shielding cover supporting pieces 1-5 and beam mounting blocks 1-6; the thyristor component 2 comprises a thyristor unit formed by a pair of thyristors which are installed in anti-parallel, and radiators which are distributed at intervals with the thyristors; the thyristor assembly 2 is horizontally fixed in the shielding case assembly 1; the resistor assembly 3 consists of a water resistor, a support plate and an installation structural member; the reactor component 4 consists of a saturable reactor and a mounting plate; the capacitor assembly 5 consists of a capacitor unit, a support plate and an installation structural part; the water pipe assembly 6 is composed of a main water pipe, branch water pipes, a flange plate and an insulating support piece; the optical cable groove component 7 is composed of an optical cable groove and an installation block.

Further, the shield support members 1-5 of the shield assembly support both the horizontal and vertical shields while providing an insulator flange interface that can be expanded to a multiple valve module stack configuration.

Furthermore, the thyristors and the radiator are arranged at intervals, and the thyristor components are connected on the fins of the radiator by copper flexible connection, so that anti-parallel installation is realized; two ends of the thyristor assembly are fixed on the metal beam through structural parts.

Further, the water pipe assembly is installed on the upper layer of the valve module and distributed to two sides of the valve module through the T-shaped main water pipe.

Further, the resistance assembly is located between the thyristor assembly and the capacitor assembly, and branch water pipe layout is facilitated.

The invention has the beneficial effects that:

1. the shielding cover assembly can play a shielding role and also can play a role in supporting the assembly and stacking the valve module;

2. the water pipe components and other components are arranged in a layered mode, the upper-layer space and the lower-layer space are effectively utilized, and the T-shaped main water pipes are symmetrically arranged, so that the problem of uneven water resistance is solved;

3. the control unit of the thyristor assembly is arranged on one side of the assembly, and the optical cable groove assembly is arranged right above the control unit, so that the connection and collection of optical fibers are facilitated;

4. the resistor assembly is arranged in the middle, and the silicon stack assembly and the capacitor assembly are arranged on two sides, so that the water path connection is facilitated, and the wiring is attractive and simple;

5. the valve modules are horizontally arranged, so that the disadvantage of height limitation of a vertical arrangement structure is overcome;

drawings

FIG. 1 is a horizontal thyristor valve block module;

FIG. 2 is a horizontal thyristor valve block frame;

fig. 3 is a horizontal thyristor valve stack assembly.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 1, the overall structure of the thyristor valve module according to the present invention is schematically illustrated, and the schematic diagram includes: the device comprises a shielding case assembly 1, a thyristor assembly 2, a resistor assembly 3, a reactor assembly 4, a capacitor assembly 5, a water pipe assembly 6 and a cable trough assembly 7; mounting holes are formed in mounting plates at two ends of the thyristor assembly 2, and the thyristor assembly 2 is fixed on four metal beams 1-3 of the shielding case assembly 1 through the mounting holes; the resistance component 3 is positioned in the middle of the valve module and is fixed on the metal beams 1-3 through mounting feet arranged at two sides of the resistance component 3; the capacitor component 5 is positioned at the other side of the resistor component 3 and is fixed on the metal beams 1-3 through mounting plates at two sides of the capacitor component 5; the reactor components 4 are positioned at two ends of the whole valve module in the length direction and are fixed on the two metal beams 1-3 on the outer sides through supports; the water pipe assembly 6 is positioned above the valve module, distributed to two sides of the valve module through a T-shaped main water pipe, fixed on the two metal beams 1-3 in the middle through insulating supporting blocks, and the insulating supporting blocks are arranged on the two mounting plates of the two thyristor assemblies 2 positioned on the outer sides and used for reinforcing the water pipe assembly 6; the cable trough assembly 7 is positioned above the thyristor assembly 2 to facilitate collection of the optical fibers of the thyristor assembly 2.

Referring to fig. 2, the shield assembly 1 includes a shield 1-1, an adaptor 1-2, a plurality of metal beams 1-3, insulators 1-4, shield supports 1-5, and beam mounting blocks 1-6. Four shielding cases 1-1 are connected end to end and fixedly connected through shielding case supporting pieces 1-5, insulators 1-4 are installed on inner side installation holes of the shielding cases, cross beam installation blocks 1-6 are installed at the other ends of the insulators 1-4, two metal beams 1-3 on the outer sides are installed on the cross beam installation blocks 1-6, and two metal beams 1-3 on the inner sides are installed on installation holes on the inner sides of the shielding cases through adapter pieces 1-2.

Fig. 3 shows a horizontal thyristor valve stack assembly. The thyristor component 2 is formed by connecting a set number of thyristors 2-5 in series, 11 in the embodiment; the thyristor control units 2-4 and the thyristors 2-5 are installed in one-to-one correspondence.

The thyristor component consists of a mounting plate 2-1, a disc spring component 2-2, a radiator 2-3, a thyristor control unit 2-4, a thyristor 2-5, an insulating pull rod 2-6 and a metal nut 2-7. The thyristors 2-5 and the radiators 2-3 are stacked at intervals, and press-fitting force is provided by matching the disc spring assemblies 2-2 and the metal nuts 2-7 and is pressed in a frame formed by the insulating pull rods 2-6 and the mounting plate 2-1.

The capacitor component 5 is independently assembled by adopting a modular structure with a mounting plate, each thyristor corresponds to one capacitor, and the capacitor component is integrally mounted on the metal beams 1-3 through the mounting plate.

The resistance components 3 consist of a set number of (7 in this embodiment) water resistors and are mounted on the metal beams 1-3 through mounting corner pieces.

In the embodiment, the thyristor assembly, the capacitor assembly and the resistor assembly are in modular design, and all the assemblies can be integrally installed and replaced, so that the installation period is greatly shortened, and the installation efficiency is improved; the shielding cover can be used as an installation frame and does not bear the gravity of the valve layer, so that the safety of the valve module is improved; the horizontal arrangement scheme of the valve module can be used for connecting a plurality of series thyristor stages without height limitation.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The horizontal thyristor valve group valve module is characterized by comprising a shielding case assembly (1), a thyristor assembly (2), a resistor assembly (3), a reactor assembly (5), a capacitor assembly (4), a water pipe assembly (6) and a cable trough assembly (7); the shielding cover assembly consists of a plurality of shielding covers (1-1), adapters (1-2), a plurality of metal beams (1-3), insulators (1-4), shielding cover supporting pieces (1-5) and beam mounting blocks (1-6); the thyristor assembly (2) comprises a thyristor unit formed by a pair of thyristors which are installed in anti-parallel and radiators which are distributed at intervals with the thyristors; the thyristor assembly (2) is horizontally fixed in the shielding case assembly (1); the resistor assembly (3) is composed of a water resistor, a support plate and an installation structural member; the reactor component (4) is composed of a saturable reactor and a mounting plate; the capacitor assembly (5) is composed of a capacitor unit, a support plate and an installation structural member; the water pipe assembly (6) is composed of a main water pipe, a branch water pipe, a flange plate and an insulating support piece; the optical cable groove component (7) is composed of an optical cable groove and a mounting block.

2. The horizontal thyristor valve block module of claim 1, wherein: the shielding cover supporting piece (1-5) of the shielding cover assembly supports the transverse and vertical shielding covers, provides an insulator flange interface and can be expanded into a plurality of valve module laminated structures.

3. The horizontal thyristor valve block module of claim 1, wherein: the thyristors and the radiator are arranged at intervals, and the thyristor components are connected on the fins of the radiator by copper flexible connection to realize anti-parallel installation; two ends of the thyristor assembly are fixed on the metal beam through structural parts.

4. The horizontal thyristor valve block module of claim 1, wherein: the water pipe assembly is arranged on the upper layer of the valve module and distributed to two sides of the valve module through the T-shaped main water pipe.

5. The horizontal thyristor valve block module of claim 1, wherein: the resistance assembly is located between thyristor assembly and the capacitor assembly, and branch water pipe layout is facilitated.