
1.广东电网有限责任公司电网规划研究中心, 广州 510080
2.中国能源建设集团广东省电力设计研究院有限公司, 广州 510663
Received:04 September 2024,
Online First:20 February 2025,
Published:20 August 2026
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王彦峰,王流火,雷翔胜等.面向轻型化海上换流站的柔性直流桥臂电抗器设计方法[J].南方电网技术,2026,20(08):134-142.
WANG Yanfeng,WANG Liuhuo,LEI Xiangsheng,et al.Design Method of Flexible DC Bridge Arm Reactors for Lightweight Offshore Converter Station[J].Southern Power System Technology,2026,20(08):134-142.
王彦峰,王流火,雷翔胜等.面向轻型化海上换流站的柔性直流桥臂电抗器设计方法[J].南方电网技术,2026,20(08):134-142. DOI: 10.13648/j.cnki.issn1674-0629.2026.08.012.
WANG Yanfeng,WANG Liuhuo,LEI Xiangsheng,et al.Design Method of Flexible DC Bridge Arm Reactors for Lightweight Offshore Converter Station[J].Southern Power System Technology,2026,20(08):134-142. DOI: 10.13648/j.cnki.issn1674-0629.2026.08.012.
柔性直流换流平台关键设备轻型化是实现海上风电经济高效送出的关键问题。从现有柔性直流换流站的桥臂电抗器设计方案出发,提出了柔直变压器复用型桥臂电抗器和分布式桥臂电抗器两种轻型化桥臂电抗器方案,并且阐述了两种轻型化方案桥臂电抗参数的设计方法。基于PSCAD/EMTDC仿真软件分别建立了采用两种轻型化桥臂电抗器方案的海上风电经伪双极柔性直流送出系统模型,对比分析了轻型化桥臂电抗器方案和传统桥臂电抗器方案的系统稳态特性和暂态特性。结果表明,发生直流双极短路故障后,采用两种轻型化桥臂电抗器方案的桥臂电流最大值不超过1.2 p.u.,且子模块电容电压不会大幅下降。当换流器闭锁时,轻型化桥臂电抗器方案的变压器阀侧电压与传统桥臂电抗器方案相比更低。
The key equipment lightweight of the flexible DC converter platform is a crucial problem for achieving economically efficient offshore wind power transmission. Starting from the existing design scheme of bridge arm reactors in the flexible DC converter valve
two lightweight bridge arm reactor schemes
namely the multiplexing and the distributed bridge arm reactor of flexible DC transformer are proposed. The design methods for bridge arm reactor parameters of two lightweight schemes is also elucidated. Based on PSCAD/EMTDDC simulation software
the models of the offshore wind power pseudo-bidirectional flexible DC transmission system based on two lightweight bridge arm reactor schemes are established
separately. And the steady-state and transient characteristics of lightweight bridge arm reactor schemes and the traditional bridge arm reactor schemes are compared and analyzed. The results indicate that after the DC double-pole short-circuit fault occurs
the maximum bridge arm current using two lightweight bridge arm reactor schemes does not exceed 1.2 p.u.
and there is no significant drop in sub-module capacitor voltage. Further more
when the converter is locked
it shows that the transformer valve-side voltage of the lightweight bridge arm reactor scheme decreases significantly compared to that of traditional bridge arm reactor schemes.
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