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Modular multilevel hybrid topology valve tower for flexible direct-current power transmission

A modular multi-level, flexible DC power transmission technology, applied in the conversion of AC power input to DC power output, electrical components, power transmission AC network, etc., can solve problems such as inconvenient assembly of valve towers, and achieve easy design and construction, Reduced investment in equipment and land occupation, and the effect of high power density

Pending Publication Date: 2020-05-19
XJ ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a modular multi-level hybrid topology valve tower for flexible direct current transmission to solve the problem of inconvenient assembly of valve towers in the prior art

Method used

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  • Modular multilevel hybrid topology valve tower for flexible direct-current power transmission
  • Modular multilevel hybrid topology valve tower for flexible direct-current power transmission
  • Modular multilevel hybrid topology valve tower for flexible direct-current power transmission

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Such as Figure 4 , 5 . The valve tower structure shown in 6 is a modular multi-level hybrid topology valve tower for flexible direct current transmission, including a bottom support frame and three valve layers. The upper valve layer is equipped with a full-bridge valve assembly 2, and the middle valve layer Install the half-bridge valve assembly 1, and install the full-bridge valve assembly on the lower valve layer. An interlayer insulator 3 is provided between the valve layers, a bottom insulator 4 is installed on the bottom support frame, and a cooling water pipeline 5 is introduced into the valve layer from the bottom support frame. There are multiple valve assemblies in each valve layer.

[0031] Such as Figure 7 , 8 , 9, and 10 show the half-bridge valve assembly 1 and the full-bridge valve assembly 2. The half-bridge valve assembly 1 is i...

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Abstract

The invention relates to a modular multilevel hybrid topology valve tower for flexible direct-current power transmission, and belongs to the field of converter valve towers. The tower comprises at least two valve layers, each valve layer comprises a half-bridge valve assembly and a full-bridge valve assembly, each half-bridge valve assembly is composed of N half-bridge submodules, each full-bridgevalve assembly is composed of M full-bridge submodules, M>1, N>1, and M is not equal to N; the half-bridge valve assembly and the full-bridge valve assembly are the same in specification, and the cooling liquid flow of the half-bridge valve assembly and the cooling liquid flow of the full-bridge valve assembly are the same. The half-bridge valve assembly and the full-bridge valve assembly are ofmodular structures and are the same in structural size, and the requirement for the total flow of cooling liquid is the same. The valve tower is convenient to design and construct and high in installation compatibility.

Description

technical field [0001] The invention relates to a high-power power electronic rectifier and inverter device, which is applied in the fields of large-scale new energy flexible DC transmission and consumption, construction of high-voltage flexible DC power grid, flexible partition interconnection of high-voltage AC power grid and hybrid DC power transmission technology, especially a flexible Modular multilevel hybrid topology valve tower for direct current transmission. Background technique [0002] Flexible DC transmission technology is a new type of DC transmission technology based on voltage source converters, turn-off devices and pulse width modulation technology. Compared with the traditional current-source DC transmission technology based on thyristors, the flexible DC transmission technology uses a fully-controlled power electronic device IGBT, which has fast system response, good controllability, flexible operation mode, and can reduce the short-circuit capacity of the...

Claims

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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 姚为正张承朱新华王艳李华君宋全刚杜玉格于丽阳
Owner XJ ELECTRIC
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