CAJ | 학술논문

与现有的海上风电场相比,采用直流技术汇集电能和并网的海上直流风电场无需使用笨重且体积庞大的工频交流变压器,也无需对电能进行多次整流、逆变和升压,因而在设备的体积和质量、系统损耗及建设成本等方面均具有明显优势.首先对串联升压型和辐射型2种主要类型的海上直流风电场进行了详细综述,包括其拓扑结构、控制策略、优势和存在的问题;然后详细分析了海上直流风电场的关键设备——高电压、大容量、高增益DC/DC变换器的研究现状,指出了各类DC/DC变换器的优缺点及其在海上直流风电场中的应用前景;最后对海上直流风电场的故障保护问题和经济性问题的研究情况进行了总结.所述内容对中国开展海上风电等海洋能的开发利用具有一定参考价值.
여현유적해상풍전장상비,채용직류기술회집전능화병망적해상직류풍전장무수사용분중차체적방대적공빈교류변압기,야무수대전능진행다차정류、역변화승압,인이재설비적체적화질량、계통손모급건설성본등방면균구유명현우세.수선대천련승압형화복사형2충주요류형적해상직류풍전장진행료상세종술,포괄기탁복결구、공제책략、우세화존재적문제;연후상세분석료해상직류풍전장적관건설비——고전압、대용량、고증익DC/DC변환기적연구현상,지출료각류DC/DC변환기적우결점급기재해상직류풍전장중적응용전경;최후대해상직류풍전장적고장보호문제화경제성문제적연구정황진행료총결.소술내용대중국개전해상풍전등해양능적개발이용구유일정삼고개치.
Compared with offshore wind farm with AC collection system, offshore wind farm with pure DC system, including DC transmission and collection systems, eliminates heavy and bulky AC power frequency transformers and the needs for multiple power rectifiers, inverters and voltage boost. It shows some brilliant merits, such as smaller size and lighter weight of equipment, higher efficiency and lower cost. This paper firstly summarizes the topologies, control strategies, advantages and existing problems of offshore DC wind farm. Then a detailed discussion is made about high voltage, large capacity and high gain DC/DC converters, which are regarded as the key equipment of offshore DC wind farms. The advantages and disadvantages of different DC/DC converter topologies and their application prospects in offshore DC wind farm are pointed out. Then, the research situation of offshore DC wind farm fault protection is presented. Finally, this paper affirms the prospect of offshore DC wind farm application. The conclusion has value for utilization of ocean energy such as offshore wind.