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首页> 外文期刊>The Journal of Engineering >Impacts on operational characteristics of AC/DC system with different grid integration modes of offshore wind farm via MMC-based HVDC transmission
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Impacts on operational characteristics of AC/DC system with different grid integration modes of offshore wind farm via MMC-based HVDC transmission

机译：基于MMC的HVDC传输对海上风电场不同网格集成模式的AC / DC系统运行特性的影响

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摘要

With the rapid development of renewable energy resources, wind power plays a major role to support the conventional power system. Meanwhile, the module multilevel converter (MMC) technology attracts the public's wide attention in the implementation of offshore wind farm integration. To analyse the impacts on the operational characteristics of hybrid AC/DC power system, the simulations and relevant remarks with grid integration of large permanent magnet synchronous generator (PMSG)-based wind farms using different MMC-based HVDC transmission structures are conducted. First, the detailed mathematical models and control strategies pertinent to PMSG and MMC are introduced, respectively. By applying different MMC-based HVDC topologies of offshore wind farm integrating into the AC power grid, the interactions between DC system and AC grid can be elaborately studied via changing the wind speed conditions, the wind farm point of common coupling etc. under the PSCAD/EMTDC™ simulation environment. Furthermore, the wind power penetration level is also analysed. A modified 4-generator 2-area hybrid AC/DC test system is applied as benchmark to carry out the corresponding simulation studies. Some useful and significant conclusions and comments are drawn.
机译：随着可再生能源资源的快速发展，风力发挥了重要作用以支持传统的电力系统。同时，模块多级转换器（MMC）技术吸引了公众在实施海上风电场集成方面的广泛关注。为了分析对混合AC / DC电力系统的操作特性的影响，进行了使用不同MMC的HVDC传动结构的大型永磁同步发电机（PMSG）基于大型永磁同步发电机（PMSG）的电网集成的模拟和相关备注。首先，分别介绍了与PMSG和MMC相关的详细数学模型和控制策略。通过将不同的MMC的HVDC拓扑应用于离岸风电场集成到交流电网，可以通过更换风速条件，在PSCAD下进行风速条件来精心研究DC系统和交流电网之间的相互作用/ EMTDC.™ 仿真环境。此外，还分析了风力渗透水平。改进的4 - 发电机2区域混合AC / DC测试系统被应用为基准，以执行相应的仿真研究。一些有用和重要的结论和评论是绘制的。

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