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Setting method of main loop of dual 6 ripple ice melting device

A main circuit, ice melting technology, applied in the field of power system, can solve the problem of failing to fully utilize the capacity of the thyristor converter valve

Inactive Publication Date: 2013-12-04
NR ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mutual switching scheme of the two operation modes proposed by AREA (please refer to Xu Shukai, Zhao Jie. Cases of Power Grid Ice Disaster and Review of Anti-ice and Melting Technology. China Southern Power Grid Technology, 2008, 2(2): 1-6), structure comparison Intuitive, but only a set of 6-pulse delta-connected SVC can be converted from the double 6-pulse deicing device, which also fails to make full use of the capacity of the thyristor converter valve

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  • Setting method of main loop of dual 6 ripple ice melting device
  • Setting method of main loop of dual 6 ripple ice melting device
  • Setting method of main loop of dual 6 ripple ice melting device

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] The present invention provides a method for setting up the main circuit of a double 6-pulse ice-melting device. The double 6-pulse thyristor converter valve group on which it is based includes two 6-pulse converter valve groups. Each valve group connects different numbers of thyristors in series to Adapt to the needs of different voltage levels;

[0033] When the present invention is implemented, 14 isolation switch groups Y1-7, D1-7, 4 isolation switches S1-4, 2 phase-controlled reactor groups YR, DR and 2 current-sharing reactors R1 are added to the aforementioned structure , R2, each isolating switch group contains 3 isolating switches, each phase-controlled reactor group contains 3 phase-controlled reactors, figure 1 A, B, and C are added after each label to indicate its phase.

[0034] The first 6-pulse converter valve group ...

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Abstract

The invention discloses a setting method of a main loop of a dual 6 ripple ice melting device. The main loop of the dual 6 ripple ice melting device comprises two 6 ripple converter valve groups, 14 isolation switch groups, 4 isolation switches, 2 phase controlled reactor groups and 2 current sharing reactors. By controlling the opening and the closing of each isolation switch, the dual 6 ripple ice melting device is in a direct current ice melting operation mode to carry out ice melting on a line when a wire is covered by ice in winter, and converts into a static reactive compensation device to carry out dynamic reactive compensation on an alternating current system in other time. The allocation method has the advantage of visual structure, can convert the ice melting device into two independent TCRs in triangular wiring form, and can make full use of the capacity of a thyristor converter valve.

Description

technical field [0001] The invention belongs to the field of electric power systems, and in particular relates to a method for setting a main circuit of a double-six pulsation ice-melting device. 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 operation, DC vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16H02J3/18
CPCY02E40/30
Inventor 张翔李海英陈松林李建春
Owner NR ELECTRIC CO LTD
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