徐政,徐文哲,张哲任,裘鹏,黄莹
XU Zheng,XU Wenzhe,ZHANG Zheren,QIU Peng,HUANG Ying

• 1:浙江大学电气工程学院
• 2:国网浙江省电力有限公司电力科学研究院

摘要(Abstract)：

西南地区大规模陆上水风光综合基地颇具开发潜力，需确定合适方式将其送至东部负荷中心。针对风光新能源基地内部的升压汇集，鉴于传统的交流方案存在无功、距离受限等问题，开展了大型陆上风光综合基地的交直流组网送出方案研究。首先，从光伏风电并网多电压等级直流系统和水电孤岛送出系统两个方面介绍了水风光综合基地的交直流组网方案，并给出光伏风电并网多电压等级直流系统各级直流变压器方案。随后详细描述了直流电压控制策略和故障穿越控制策略。最后，基于PSCAD/EMTDC搭建15 000MW大型陆上水风光综合基地交直流组网送出系统仿真模型，验证了所提交直流组网方案的可行性。
The large-scale onshore hydro-wind-solar integrated bases in southwest China have great development potential, and it is necessary to determine a suitable scheme for power transmission to the eastern load center. In view of the boost collection inside the wind and solar energy base and problems of the traditional AC scheme such as reactive power and limited transmission distance, the paper studies the AC/DC networking and transmission scheme for large-scale onshore hydro-wind-solar integrated bases. First, it introduces the scheme from the aspects of the multivoltage level DC system with the integration of photovoltaic and wind power and island transmission system of hydropower, and schemes for DC transformers of all levels are introduced. Then, the DC voltage control strategy and fault ride-through control strategy are expounded. Finally, based on PSCAD/EMTDC, a simulation model of AC/DC networking and transmission system for a 15,000 MW large-scale onshore hydro-wind-solar integrated base transmission is built, and the feasibility of the proposed scheme is verified.

关键词(KeyWords)： 水风光基地;交直流组网;直流变压器;控制保护策略
hydro-wind-solar integrated bases;AC/DC networking;DC transformer;control and protection strategy

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务专项（2021QNA4014）

作者(Author): 徐政,徐文哲,张哲任,裘鹏,黄莹
XU Zheng,XU Wenzhe,ZHANG Zheren,QIU Peng,HUANG Ying

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