Arrangement method suitable for extra-high-voltage high-capacity flexible direct-current converter station starting loop

A start-up circuit and flexible DC technology, applied in the direction of output power conversion device, conversion of AC power input to DC power output, power transmission AC network, etc., can solve the problems of increasing the area occupied by the converter station and reducing operating costs, etc. To achieve the effect of saving the layout area, reducing the occupied area, and reducing the occupied area

Pending Publication Date: 2019-07-19
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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Problems solved by technology

[0005] The present invention provides a layout method suitable for the start-up circuit of UHV large-capacity flexible DC converter station, by changing the electrical wiring and layout of the converter transformer and the start-up circuit area of ​​UHV flexible DC converter station, to solve the traditional layout method The technical problem of greatly increasing the area occupied by the converter station to reduce operating costs

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  • Arrangement method suitable for extra-high-voltage high-capacity flexible direct-current converter station starting loop
  • Arrangement method suitable for extra-high-voltage high-capacity flexible direct-current converter station starting loop
  • Arrangement method suitable for extra-high-voltage high-capacity flexible direct-current converter station starting loop

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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] The starting circuit is a necessary electrical circuit of the flexible DC converter station. Its main function is to limit the overcurrent during the system starting process. Generally, the starting circuit mainly includes the starting resistor and the corresponding bypass switchgear. The start-up circuit is generally set close to the converter transformer, and can be set on the grid side or valve side of the converter transformer according to system requirem...

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Abstract

The invention discloses an arrangement method suitable for an extra-high-voltage high-capacity flexible direct-current converter station starting loop. The arrangement method comprises the following steps that one end of a wall-penetrating sleeve is connected with a converter transformer, and the other end extends into a valve hall to be connected with a bridge arm unit; starting loop equipment isarranged on the grid side of the converter transformer, and the starting loop equipment is connected with a grid side sleeve of the converter transformer; each phase of the starting loop equipment and the converter transformer form a converter transformer unit; and the starting loop equipment is arranged on the grid side of the extra-high-voltage high-capacity flexible direct-current converter station converter transformer, and the valve side sleeve is extended into the valve hall for connection, so that the direct-current wall-penetrating sleeve is saved, the occupied area is reduced, and the investment cost is greatly lowered.

Description

technical field [0001] The invention relates to the technical field of electric power engineering, in particular to a method for arranging a start-up circuit suitable for an UHV large-capacity flexible DC converter station. Background technique [0002] Flexible DC transmission technology is a new type of DC transmission technology based on voltage source converters. It has the advantages of strong controllability, little impact on the environment, no requirement for the short-circuit capacity of the receiving end, and can improve the dynamic stability of the system. From its technical From the perspective of characteristics and actual project operation, it is very suitable for grid-connected renewable energy, distributed generation grid-connected, island power supply, urban power grid power supply, asynchronous grid interconnection and other fields. In recent years, the domestic research and application of flexible DC has developed rapidly, and the technology has been updat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/36H02M7/00
CPCH02J3/36H02M7/003Y02E60/60
Inventor 郝为瀚郭金川孔志达周敏王建武王宏斌饶宏周保荣李鸿鑫姚文峰
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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