Thyristor converter valve tower for high-voltage direct-current power transmission

Abstract

The invention provides a thyristor converter valve tower for high-voltage direct-current power transmission, comprising a lightning arrester and a valve tower body which are vertically arranged and are parallel to each other. The valve tower body comprises a top shield and a bottom shield which are arranged horizontally and thyristor converter valve modules which are arranged in parallel and in the same direction between the top shield and the bottom shield. The thyristor converter valve modules are concave. The lightning arrester is arranged at the outer side of the openings of the concave thyristor converter valve modules, and is connected with the thyristor converter valve modules through flexible tubular buses. The thyristor converter valve tower provided by the invention has the advantages of high flexibility, good anti-seismic effect, lower weight, more stable structure, convenient maintenance, and easy transportation, installation and commissioning on an engineering site.

Description

technical field [0001] The invention relates to a valve tower, in particular to a thyristor converter valve valve tower used for high-voltage direct current transmission. Background technique [0002] The core component of the converter valve is the thyristor, whose voltage level is thousands of volts, and the voltage level of the power grid is much higher than the voltage level of the thyristor. In order to realize the commutation, a low-voltage, low-power basic The converter valve module, through the horizontal and vertical expansion of the converter valve module, realizes the mutual communication of multiple modules to meet the needs of high-voltage and high-power power transmission occasions. [0003] At present, the high-voltage DC converter valves at home and abroad mostly adopt tower structure and hoisting design to form a converter valve tower. The structural form and hoisting form of the converter valve tower are different. For example, there is a valve tower struc...

AI Technical Summary

Problems solved by technology

For example, there is a valve tower structure that adopts double-row multi-layer and staggered arrangement of each layer. The valve modules of each layer of this valve tower structure are rigid connection structures, and only flexible connections are used at the connection between the valve tower and the steel beam of the valve hall. With the design of the valve tower, the overall swing of the valve tower is poor in flexibility and shock resistance when it is subjected to external force; some converter valve valve towers are connected flexibly as a whole, but the devices of the converter valve modules in each layer of the valve tower are completely Arranged sequentially along the straight line, resulting in large structural span and poor stability

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