The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid

Yun Liu; Guangfan Li; Lan Guan; Zhi Li

doi:10.17775/CSEEJPES.2016.00580

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The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid

更新时间：2025-12-18

- The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid
- The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid
- 中国电机工程学会电力与能源系统学报(英文) 2017年3卷第3期页码：243-252
- 作者机构：
  
  1. North China Electric Power University,, Beijing, CN,Beijing
  2. UHV Research Institute (Electric Power Research Institute of China),Beijing,China,100092
  3. State Power Economic Research Institute,Beijing,China,100028
  4. Shenyang Transformer Research Institute,Shenyang,China,110179
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2016.00580
  中图分类号：
- 纸质出版：2017
- 稿件说明：
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Yun Liu, Guangfan Li, Lan Guan, 等. The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid[J]. 中国电机工程学会电力与能源系统学报(英文), 2017,3(3):243-252.

Yun Liu, Guangfan Li, Lan Guan, et al. The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid[J]. CSEE Journal of Power and Energy Systems, 2017, 3(3): 243-252.
Yun Liu, Guangfan Li, Lan Guan, 等. The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid[J]. 中国电机工程学会电力与能源系统学报(英文), 2017,3(3):243-252. DOI： 10.17775/CSEEJPES.2016.00580.

Yun Liu, Guangfan Li, Lan Guan, et al. The single-active-part structure of the UHVDC converter transformer with the UHVAC power grid[J]. CSEE Journal of Power and Energy Systems, 2017, 3(3): 243-252. DOI： 10.17775/CSEEJPES.2016.00580.

摘要

Abstract

The studied sending-terminal's UHVDC converter transformer with the UHVAC grid is currently one of the largest-capacity converter transformers

which is characterized by strong support for the large-scale grid power delivering out

strengthening grid's fault tolerance and backup capability

improving grid operation's flexibility and security

lowering the short-circuit currents. The proposed single-active-part converter transformer structure is well-designed

including the single-phase five-leg iron core

the special winding arrangement

the special structure of the spacers and angle rings

and so on

which is a smaller footprint

easier to install and test on site

but is more challenging in the structural design due to the critical railway transportation limitations on aspects of both size and weight. The feasibility of the proposed structure schema is verified by a series of tests

concerning the wave process

the short circuit force

the temperature field

the main insulation

and so on. Among them

the main insulation's electric fields at the import positions are verified to be reasonable

including the AC impressed voltage test

the DC impressed voltage test

and the polarity reversal test. It shows that the proposed single-active-part design scheme is practicable and conductive to manufacture and application for the UHV large-capacity converter transformers.

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