摘要
随着张北地区风电、光电等可再生能源不断开发,大规模清洁能源并网与传输对柔性直流电网的发展与构建提出了迫切需求。综合考虑了柔性直流（VSC-HVDC）输电技术的优点,设计了一种对称双极结构作为张北四端直流电网主拓扑,采用半桥式模块化多级换流器（MMC）拓扑结构和架空线进行电力传输。同时,提出了一种新型模块化级联直流断路器拓扑,并开发了500 kV柔直换流阀和直流断路器样机,以满足张北四端直流电网的需求。
With the capacity of new energy resources such as wind power and photovoltaic in Zhangbei region increasing rapidly, the reliable transmission and consumption capabilities of large-scale and high-proportion new energy resources are urgently improved. Considering the advantages of the VSC-HVDC transmission technology, Zhangbei project is designed as symmetrical bipolar system which adopts half-bridge modular multi-level converter（MMC） topology and overhead lines for power transmission. In this paper, a system scheme was presented, and some results were provided. Meanwhile, a novel modular cascaded hybrid DC breaker concept was proposed, and 500 kV VSC valve and DC breaker prototype were developed to meet the requirement of the Zhangbei four-terminal DC grid.
作者
汤广福
王高勇
贺之渊
庞辉
周啸
单云海
李强
TANG Guangfu;WANG Gaoyong;HE Zhiyuan;PANG Hui;ZHOU Xiao;SHAN Yunhai;LI Qiang(Global Energy Interconnection Research Institute Co.,Ltd.,Beijing 102209,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2018年第7期2097-2106,共10页
High Voltage Engineering
基金
国家重点研发计划(2017YFB0902400)~~
