电力建设2024，Vol.45Issue(4)：46-56,11.DOI:10.12204/j.issn.1000-7229.2024.04.005
适用于孤岛风电外送的LCC-DR混合型直流输电系统
A LCC-DR Hybrid HVDC System Topology Suitable for Island Wind-Power Transmission
摘要
Abstract
An LCC-DR hybrid HVDC transmission system that considers DC fault ride-through and economy is proposed herein to achieve large-scale centralized and long-distance transmission of island wind power in the Gobi Desert.First,the topology of the hybrid transmission system is introduced.The system uses LCC and DR in series to integrate a large-scale wind power base.Subsequently,a mathematical model of the system is established,and a control scheme is designed based on it.Under DC and AC faults,the operation of the system is analyzed,and a fault ride-through strategy is designed to ensure the stable operation of the system.To verify the effectiveness of the control strategy,an LCC-DR hybrid transmission system model is established in PSCAD/EMTDC,and the steady-state and transient operation characteristics are simulated.The results show that the system can effectively realize the large-scale and long-distance transmission of renewable energy in the Gobi Desert.关键词
孤岛风电/混合直流输电系统/二极管整流单元/构网控制/交直流故障穿越Key words
island wind power/hybrid HVDC transmission system/diode rectifier unit/grid forming control/AC/DC fault ride-through分类
信息技术与安全科学引用本文复制引用
李明,赵峥,孟沛彧,李探,向往,文劲宇..适用于孤岛风电外送的LCC-DR混合型直流输电系统[J].电力建设,2024,45(4):46-56,11.基金项目
This work is supported by State Grid Corporation of China Research Program(No.5100-202156581A-0-5-SF).国家电网公司科技项目"混合级联直流系统设计可靠性提升技术研究"(5100-202156581A-0-5-SF) （No.5100-202156581A-0-5-SF）
