Movable static var compensator and direct current ice-melting device and realization method thereof

A technology of static reactive power compensation and DC ice melting, applied in reactive power adjustment/elimination/compensation, overhead installation, cable installation, etc., which can solve the problems of large volume of air-core reactors, large magnetic leakage, and difficulty in device movement. , to achieve the effect of convenient and fast movement, simple installation and saving equipment investment

Inactive Publication Date: 2012-03-07
CHINA EPRI SCIENCE & TECHNOLOGY CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large size of the air-core reactor and the large magnetic flux leakage, it is difficult to move the device as a whole

Method used

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  • Movable static var compensator and direct current ice-melting device and realization method thereof
  • Movable static var compensator and direct current ice-melting device and realization method thereof
  • Movable static var compensator and direct current ice-melting device and realization method thereof

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the primary side of the device in this embodiment includes a thyristor converter, an iron core reactor, an isolating switch and a surge arrester; wherein the thyristor converter doubles as a thyristor-controlled reactor type TCR valve group, and the iron core reactor can be used in DC It is used as a commutation reactor in the ice-melting mode, and as a phase-controlled reactor of the thyristor-controlled reactor type TCR in the static var compensation mode, and both the thyristor converter and the core reactor are detachable structures. Isolation switches are set between each detachable structure, the line knife switch is operated sequentially, and the thyristor converter and iron core reactor are disassembled and reorganized to form different topological structures. Among them, the ir...

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Abstract

The invention relates to a movable static var compensator and direct current ice-melting device and a realization method thereof. A primary side of the device mainly comprises a thyristor converter, an iron core reactor, an isolating switch, and a lightning arrester. According to a disconnecting link operation, different topology structures are constructed; switching between a direct current ice-melting function and a static var compensator (SVC) function of the device is realized; and problems on a direct current ice-melting device with heavy current, high voltage and high capacity as well as system reactive compensation are solved. According to the invention, the device is simple, reliable and compact; and movement on the whole can be realized; moreover, it is unnecessary for all containers to disassemble equipment during the moving process, so that movement of a whole container is realized; furthermore, it is no need for the device to utilize a converter transformer; investments are saved, losses are reduced and noises are reduced; and meanwhile, workloads on operation and maintenance at a converting later period are substantially reduced.

Description

Technical field: [0001] The invention relates to the technical field of thyristor application of power electronic semiconductor devices, in particular to a movable static var compensation and DC ice melting device and a realization method. Background technique: [0002] At the beginning of 2008, a large-scale severe rain, snow and freezing disaster occurred in southern China, which caused serious damage to power facilities and caused huge losses to the power grid. In some areas, the power grid even suffered a devastating blow. The research shows that DC deicing technology is an effective method to achieve high current and long line deicing. However, 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 can take into account both static var compensation and DC ice-melting functions through proper structural reorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02G7/16
CPCY02E40/10
Inventor 李长宇段昊徐桂芝贾跟卯张晓薇黄小梅
Owner CHINA EPRI SCIENCE & TECHNOLOGY CO LTD
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