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Reconstruction configuration method for two six-pulse parallel connection commutation group valve

A configuration method and six-pulse technology are applied in the field of power systems to achieve obvious economical effects

Active Publication Date: 2009-06-24
CHINA ELECTRIC POWER RES INST +2
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  • Description
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Problems solved by technology

[0005] There is no reconfigurable configuration method of the thyristor-controlled reactor (TCR) valve group and two six-pulse parallel rectifier valve groups proposed by the present invention at home and abroad

Method used

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  • Reconstruction configuration method for two six-pulse parallel connection commutation group valve
  • Reconstruction configuration method for two six-pulse parallel connection commutation group valve
  • Reconstruction configuration method for two six-pulse parallel connection commutation group valve

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Embodiment Construction

[0015] The thyristor-controlled reactor (TCR) valve group and two six-pulse parallel rectifier valve groups are composed of 12 groups of valve groups. Each group of valve groups is a thyristor series structure, and different numbers of thyristors are connected in series to adapt to different voltage levels. Different topologies can be formed by splitting, combining and reconfiguring—respectively forming a thyristor-controlled reactor (TCR) valve group and two six-pulse parallel rectification valve groups, which can be flexibly used for SVC and rectification. main circuit such as figure 1 As shown (the thyristor symbol in the figure is actually a valve group with multiple thyristors connected in series), two sets of six-pulse parallel thyristor valve groups, each thyristor valve group passes through the branch isolation switch ZA1, ZB1, ZC1, ZA2, ZB2, ZC2 is connected in parallel with the corresponding branches of the same group and different groups; the same-phase valves of th...

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Abstract

The invention provides a reconstruction configuration method of a valve bank of a thyristor control reactor (TCR) and two six-pulsating parallel rectifying valve banks; the valve bank of the thyristor control reactor (TCR) and two six-pulsating parallel rectifying valve banks are composed of twelve valve banks, and each valve bank is a thyristor series structure, and the different number of thyristors are connected in series for being suitable for different voltage class, and different topological structures are formed by splitting, combination and reconstruction; the topological structures can respectively form the valve bank of the thyristor control reactor (TCR) and two six-pulsating parallel rectifying valve banks and can be flexibly applied to static-state reactive power compensation SVC and rectification. The method carries out splitting and reconstruction to the valve bank of the thyristor control reactor (TCR) and two six-pulsating parallel rectifying valve banks for forming the different topological structures; in normal time, SVC is formed for reactive power compensation, system voltage regulation and stable control, and in disaster climate, a rectifying system is formed for direct current de-icing, thus having remarkable economical efficiency.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a method for reconfiguring and configuring two six-pulse parallel rectifier valve groups. Background technique [0002] At the beginning of 2008, severe rain, snow and freezing disasters occurred in Central China, Southwest my country, and East China. The power grid facilities were seriously covered with ice and snow, and frequent tripping of disconnected lines and downed towers caused huge losses to the power grid. In some areas, the power grid even suffered a devastating blow . Due to the small time and frequency of ice disasters, if the DC ice melting equipment can only be used as an ice melting device, its economic efficiency is poor. Static var compensation (SVC) and DC ice-melting device, in addition to meeting the needs of power transmission line ice-melting, can also be used as a conventional dynamic var compensation device in general, providing dynamic var suppor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02M7/155H02G7/16
CPCY02E40/12Y02E40/10
Inventor 周胜军张皎荆平邓占锋
Owner CHINA ELECTRIC POWER RES INST
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