Method for configuring structure transformation of double 6-pulse thyristor converter valve groups

A thyristor commutator valve and pulsating commutation technology, applied in the field of power system, can solve problems such as poor economy

Inactive Publication Date: 2013-12-18
NR ELECTRIC CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The ice melting device is generally only used when the line freezes in winter, so the economy is poor

Method used

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  • Method for configuring structure transformation of double 6-pulse thyristor converter valve groups
  • Method for configuring structure transformation of double 6-pulse thyristor converter valve groups
  • Method for configuring structure transformation of double 6-pulse thyristor converter valve groups

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Embodiment Construction

[0032] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] The invention provides a method for structural transformation and configuration of a double 6-pulse thyristor converter valve group. The double 6-pulse thyristor converter valve group based on the method includes two 6-pulse converter valve groups, and the first 6-pulse converter valve group The positive end of the valve is connected to the positive end of the second 6-pulse converter valve group, and each group of valves is connected in series with different numbers of thyristors to meet the needs of different voltage levels; the two 6-pulse converter valve groups have the same structure, wherein, The first 6-pulse converter valve group is a three-phase full-bridge circuit formed by connecting converter valves YT1-6 in groups of two. The phase inlet line Y_A is connected, the anode of the converter valve YT3 is connected to the cat...

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Abstract

The invention discloses a method for configuring structure transformation of double 6-pulse thyristor converter valve groups. The double 6-pulse thyristor converter valve groups include two 6-pulse converter valve groups, fourteen isolating switch groups, four isolating switches and two phase-control electric reactor groups. On and off of the various isolating switches are controlled, so that the double 6-pulse thyristor converter valve groups can be transformed into direct-current ice melting devices to melt ice for circuits when conducting wires are coated by the ice in winters, the electric reactors of the direct-current ice melting devices are used as load for zero-power tests before the ice on the circuits actually begins to be melted, currents can be increased without the circuits, and the double 6-pulse thyristor converter valve groups are used as static var compensators so as to perform dynamic reactive compensation on an alternating-current system in other times. The method for configuring the structure transformation has the advantage that normal ice melting running modes, zero-power test running modes and SVC (static var compensator) running modes of the double 6-pulse thyristor converter valve groups can be quickly and automatically switched over by the aid of the method.

Description

technical field [0001] The invention belongs to the field of power systems, and in particular relates to a configuration method for structural change of a double-six-pulse thyristor converter valve group. Background technique [0002] In 2008, severe ice and snow disasters occurred in southern my country, which caused great damage to transmission lines and grid structures. For this reason, domestic units are actively carrying out research work on anti-icing and melting ice. Among them, the successfully developed DC ice-melting device has a remarkable effect on line ice-melting. At present, DC ice-melting devices with various structures have been put into practical operation. [0003] The basic structure of the double 6-pulse DC ice-melting device composed of thyristors is that two standard 6-pulse rectifier bridges are connected in parallel to form a double 6-pulse rectifier bridge, which can rectify 3-phase AC voltage into DC voltage. During normal ice-melting operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16H02M7/17H02J3/18
CPCY02E40/10
Inventor 张翔田杰李海英
Owner NR ELECTRIC CO LTD
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