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Horizontal light-controlled water-cooled thyristor valve group

A technology of thyristor valves and thyristors, which is applied in the direction of electrical components, electric solid devices, circuits, etc., can solve the problems of unsatisfactory heat dissipation consistency of components, inconsistent water pressure of component strings, uneven stress of thyristors, etc., and reduce skin effect , good contact, easy maintenance and replacement of components

Inactive Publication Date: 2011-12-21
ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned vertical light-controlled valve group has certain advantages compared with the traditional valve group, but there are still defects: 1. Due to the gravity of the vertically installed light-controlled thyristor, the thyristor at the top of the valve group and the thyristor at the bottom are stressed. Unevenness; 2. There is a height difference in the cooling water of the vertically installed component strings, resulting in inconsistent water pressure of the component strings, which cannot meet the consistency of component heat dissipation; 3. Set the water-cooling resistor and damping capacitor side by side on a board, when one of them When a component fails and needs to be replaced, the entire board must be removed, which is not easy to replace

Method used

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  • Horizontal light-controlled water-cooled thyristor valve group
  • Horizontal light-controlled water-cooled thyristor valve group
  • Horizontal light-controlled water-cooled thyristor valve group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] See Figure 1~Figure 4 , The light-controlled water-cooled thyristor valve group adopts a horizontal structure, and the left and right valve groups are connected in series to form a single-phase valve group. The soft copper bus bar is used to connect the left and right valve units. A single valve group adopts a horizontal structure, consisting of thyristor unit 1, trigger board unit 2, frame unit 3, RC protection capacitor unit 4, voltage equalizing resistor unit 5, water pipe unit 6, insulator unit 7, soft busbar 8, RC protection Water-cooled resistance unit 9 etc. are formed. The thyristor unit 1 that needs water cooling is arranged above the water pipe unit 6, the RC protection water cooling resistance unit 9 that needs water cooling is arranged behind the water pipe unit 6; the RC protection capacitor unit 4 that does not need water cooling is arranged in the RC protection water cooling resistance unit 9, the voltage equalizing resistance unit 5 is arranged on the...

Embodiment 2

[0030] See Figure 1~Figure 4 , A 35KV light-controlled water-cooled thyristor valve group is composed of a single valve group, and the valve group adopts a horizontal structure. It consists of thyristor unit 1, trigger board unit 2, frame unit 3, RC protection capacitor unit 4, voltage equalizing resistor unit 5, internal water pipe unit 6, insulator 7, soft busbar 8, RC protection water cooling resistance unit 9, etc. The thyristor unit 1 that requires water cooling is arranged above the internal water pipe, and the RC protection water-cooled resistance unit 9 that requires water cooling is arranged behind the internal water pipe; At the rear, the voltage equalizing resistance unit 5 is arranged on the epoxy cloth board under the rear and lower part of the valve unit, which is conducive to the heat dissipation of the voltage equalizing resistance unit 5. Due to the heat generated by the voltage equalizing resistance unit 5, the epoxy cloth board is isolated to avoid resistan...

Embodiment 3

[0032] Continue to increase the number of valve units on the basis of the original horizontal water-cooled light-controlled thyristor valve group to obtain a valve group with a higher voltage level.

[0033] The installation of the light-controlled thyristor and the water-cooled radiator of the horizontal valve group described in the present invention is completed by using a special press-fitting method, and the press-fitting method at least includes the following steps:

[0034] Step 1: Select two epoxy side pull plates and one intermediate pressure plate of appropriate size to form the H-shaped skeleton of the horizontal light-controlled thyristor valve group;

[0035] Step 2: Put the H-shaped framework vertically, install the required positioning pins, water-cooled radiators and light-controlled thyristors on the middle pressure plate of the H-shaped framework in sequence, and then install the alignment cake, press-fit components and pressure plate in sequence, and the cente...

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Abstract

The invention relates to a horizontal light-controlled water-cooled thyristor valve group, each phase is composed of two valve units connected in series, and each valve unit is composed of two series anti-parallel thyristor units, a trigger plate unit, a frame unit, a resistance-capacitance protection capacitor unit, It is composed of voltage equalizing resistance unit, internal water pipe unit, insulator unit, parallel soft busbar unit, and resistance-capacity protection water-cooled resistance unit. The valve bodies of the two valve units are arranged in a horizontal structure, and the left and right valve units are connected in series to form a single-phase valve group. . The valve unit adopts horizontal modular arrangement, which can carry voltage levels of 35kV, 66kV and above. The advantages are high reliability, effective use of space, separate arrangement of water circuits and pure water cooling.

Description

technical field [0001] The invention relates to a horizontal high-voltage, high-power water-cooled and heat-dissipating light-controlled thyristor valve group, which is mainly used in electric power, metallurgy and all other fields using light-controlled thyristors as core devices, and can carry 35KV, 66KV and higher voltage levels. Background technique [0002] The thyristor is the core component of the static var compensator. By controlling the firing angle of the thyristor, the impedance can be continuously adjusted, which can enhance the power transmission capacity of the system, improve system stability, damp power oscillation, and suppress subsynchronous oscillation. Thyristor valves usually have to withstand high voltage and high current, which needs to be realized by connecting multiple thyristors in series and parallel. The thyristor valve group is the core component of the dynamic reactive power compensation device in the power system. [0003] The structure of t...

Claims

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Application Information

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IPC IPC(8): H01L25/00H01L23/367H01L23/473
CPCH01L2924/0002H01L2924/00
Inventor 周靖周方圆黄燕艳吴强杨磊王才孝余军邓建华谭胜武蔡蔚王桂华李幼保毛金平沈丁建李超涂少平
Owner ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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