摘要
陆上风电全直流发电系统可有效解决大规模风电交流汇集、传输产生的谐波谐振等问题,而经济、可靠的风电直流汇集系统拓扑结构是其良好发展的基础。文中首先给出基于风机分组串并联的风电直流汇集系统拓扑结构;其次,对该拓扑结构中的不同风机分组方案进行可靠性及经济性评估;然后,综合考虑系统经济性与可靠性问题带来的缺电损失成本,以总成本最低为目标,提出风电直流汇集系统拓扑结构优化模型;最后,以中国西北某50 MW风电场为例,对所提风电直流汇集系统拓扑结构优化模型进行仿真验证。结果表明,所提风电直流汇集系统拓扑结构优化方案可以统筹考虑系统经济性和可靠性,获得最优风机分组方案,将优选后的拓扑结构与典型风电交流汇集系统结构对比,验证了所提拓扑结构优化方案的可行性及优势。
The onshore wind power full DC power generation system can effectively solve the problems of large-scale wind power AC collection and harmonic resonance caused by transmission, and the economical and reliable wind power DC collection system topology is the basis for its sound development. In this paper, the topology of the wind power DC collection system based on wind turbine grouping in series and parallel is given first. Secondly, the reliability and economy of different grouping schemes of wind turbines in the topology are evaluated. Then, considering the cost of power shortage loss caused by the the system economy and reliability problems, the optimization model for the topology of the wind power DC collection system is established with the objective of the lowest total cost. Finally, taking a 50 MW wind farm in northwest China as an example, the proposed optimization model of wind power DC system topology is verified by simulation. The results show that the proposed optimization model for the topology of the wind power DC collection system can consider the system economy and reliability as a whole, and obtain the optimal grouping scheme of wind turbines. The optimized topology is compared with the structure of the typical wind power AC collection system to verify the feasibility and advantages of the proposed optimal method for the topology.
作者
孙瑶
樊艳芳
卢俊龙
侯俊杰
王一波
白雪岩
SUN Yao;FAN Yanfang;LU Junlong;HOU Junjie;WANG Yibo;BAI Xueyan(School of Electrical Engineering,Xinjiang University,Urumqi 830000,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China)
出处
《电力系统自动化》
EI
CSCD
北大核心
2023年第3期142-152,共11页
Automation of Electric Power Systems
基金
国家重点研发计划资助项目(2021YFB1507001)
国家自然科学基金资助项目(51767023)。
关键词
风电
汇集系统
可靠性
经济性
拓扑优化
wind power
collection system
reliability
economy
topology optimization
