摘要
交流电网远距离输电存在的功角、电压稳定性问题制约了交流断面输电能力,因此探讨利用柔性直流输电与现有交流输电并列运行实现电力输送,并结合具体电网分析了输电能力。研究结果表明,柔性直流输电可大幅提升原有交流断面的输电能力,未来随着柔性直流输电成本降低,在提升大电网弱交流断面输电能力方面具有广泛的应用前景。
Due to the power angle and voltage stability problems existing in the long-distance transmission of AC power grid,the transmission capacity of AC section is restricted.In this paper,the parallel operation of flexible DC transmission and existing AC transmission to realize the power transmission is discussed,and the transmission capacity is analyzed in combination with the specific power grid.The results show that VSC-HVDC can greatly improve the transmission capacity of the original AC section.With the reduction of the cost of flexible DC transmission in the future,it has a broad application prospect in improving the transmission capacity of the weak AC section of large power grids.
作者
汪莹
葛景
王蒙
孙骁强
王新宝
韩连山
WANG Ying;GE Jing;WANG Meng;SUN Xiaoqiang;WANG Xinbao;HAN Lianshan(Northwest Branch of State Grid Corporation of China,Xi′an 710048,China;NR Electric Co.,Ltd.,Nanjing 211100,China)
出处
《电工技术》
2020年第7期63-65,68,共4页
Electric Engineering
基金
国家电网公司西北分部科技项目“应用新型直流输电技术实现西北电网大规模新能源互补外送的前景研究”(编号SGNW000GTJS1900139)。
关键词
弱交流断面
柔性直流
并列运行
输电能力
weak AC section
flexible DC
parallel operation
transmission capacity
