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Valve module of thyristor current change valve used for high-voltage DC transmission

A thyristor converter valve, high-voltage direct current technology, applied in output power conversion devices, electrical components, electro-solid devices, etc., can solve the problems of slow replacement, unfavorable valve module installation efficiency, valve module difficulty, etc., to reduce material performance requirements, shortening the length of electrical wiring, the effect of optimizing electrical performance

Active Publication Date: 2013-02-06
CHINA ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the modular decentralized structure, the thyristor, damping resistor, damping capacitor, gate unit and saturated reactor inside the valve module are assembled in a modular way. This structure design has too many scattered sub-modules inside the valve module. Many, resulting in the difficulty of on-site assembly of the valve module project, and it is not conducive to the improvement of the installation efficiency of the valve module. The operating skills of the installation technicians have high requirements
[0005] The component selection and replacement of the current converter valves in operation is slow, the minimum technology of the current components is not applied, and it cannot meet the needs of the current DC transmission boost and capacity increase

Method used

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  • Valve module of thyristor current change valve used for high-voltage DC transmission
  • Valve module of thyristor current change valve used for high-voltage DC transmission
  • Valve module of thyristor current change valve used for high-voltage DC transmission

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Embodiment Construction

[0033] The present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0034] Such as figure 1 and figure 2As shown, the valve module includes two valve sections: valve section 1 and valve section 2, and each valve section includes a saturable reactor assembly 05 and a thyristor stage assembly 00. The saturable reactor assembly 05 is located on both sides of the valve module, and the thyristor-level assembly 00 is located in the middle of the valve module. There are multiple shields on the three peripheries of the valve module (there is no shield on the side of the damping capacitor), and the structure of the shields is an arc-shaped structure, which is divided into two types: corner shields 34 and short shields 35 . The electrical connection between the saturable reactor 09 and the thyristor unit 01 is realized through the soft connection copper busbar 36, and the electrical connection of the two val...

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Abstract

The invention provides a valve module of a thyristor current change valve used for high-voltage DC transmission. On the structural design, the invention divides the valve module into two completely identical valve sections, and in addition, each valve section is structurally a whole body. The structural design can effectively disperse the weight load of the valve module, and the weight of one valve module is dispersed onto two valve sections, so the requirements of the weight load of the valve module on the structural design strength is reduced, the requirement on the material performance is also reduced, and structural support elements with lower intensity and smaller cross section dimension can be adopted. Thereby, the cost, the physical dimension and the weight of the valve module can be effectively reduced.

Description

technical field [0001] The invention relates to the field of electric power system converter valves, in particular to a thyristor converter valve module for high-voltage direct current transmission. Background technique [0002] As the core component of the HVDC transmission system, the converter valve has been developed and applied for many years. The converter valve module of traditional HVDC power transmission is based on the thyristor series structure as the core, and at the same time includes the control, trigger and protection system of the thyristor. Focusing on the safe and reliable operation of the thyristor, the converter valve module includes the following auxiliary components: saturable reactor, thyristor unit, damping resistor unit, damping capacitor unit, DC voltage equalizing resistor, energy-taking resistor, used for thyristor control, triggering and protection The control unit, and the water cooling system to meet the cooling requirements. According to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/00H01L23/473
Inventor 温家良魏晓光张升屈海涛
Owner CHINA ELECTRIC POWER RES INST
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