| 引用本文: | 章浅诺,张哲任,金砚秋,徐政.适用于超大规模海上风电并网的直流送出系统[J].电力自动化设备,2025,45(1):106-114 |
| ZHANG Qiannuo,ZHANG Zheren,JIN Yanqiu,XU Zheng.DC transmission system suitable for ultra-large-scale offshore wind power grid-connected system[J].Electric Power Automation Equipment,2025,45(1):106-114 |
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| 摘要: |
| 随着海上风电的超大规模开发，亟须提高输电廊道的利用率，实现超大规模海上风电并网的经济性和高效性。提出了适用于超大规模海上风电并网的直流送出系统构建方案，介绍了该系统的网架结构和电压等级、主接线方式、换流器拓扑以及陆上汇集站结构。在此基础上，提出了适用于该系统的交直流故障处理策略，包括系统平波电抗器配置、直流耗能装置配置和交直流故障处理策略。在PSCAD/EMTDC时域仿真软件中搭建了±500 kV/10000 MW海上风电直流送出系统的仿真模型，对交直流故障进行仿真，验证了所提方案及其交直流故障处理策略的可行性。 |
| 关键词: 远海风电 直流送出系统 交直流故障处理 模块化多电平换流器 |
| DOI：10.16081/j.epae.202408023 |
| 分类号:TM721.1;TM614 |
| 基金项目: |
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| DC transmission system suitable for ultra-large-scale offshore wind power grid-connected system |
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ZHANG Qiannuo, ZHANG Zheren, JIN Yanqiu, XU Zheng
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College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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| Abstract: |
| With the ultra-large-scale development of offshore wind power, there is an urgent need to improve the utilization rate of transmission corridors and achieve economic and efficient ultra-large-scale offshore wind power grid-connected system. A DC transmission system construction scheme suitable for ultra-large-scale offshore wind power grid-connected system is proposed, and its network structure, voltage level, main wiring method, converter topology and onshore collection station structure of the system are introduced. A suitable AC/DC fault handling strategy for the system is proposed, including system smoothing reactor configuration, DC energy consumption device configuration and AC/DC fault handling strategy. A simulation model of the ±500 kV/10000 MW offshore wind power DC transmission system is built in PSCAD/EMTDC, and AC/DC faults are simulated to verify the feasibility of the proposed scheme and its AC/DC fault handling strategy. |
| Key words: offshore wind power DC transmission system AC/DC fault handling modular multilevel converter |
