摘要
电阻型超导限流器R-SFCL(resistive superconducting fault current limiter)在柔性直流系统中的优化配置是超导限流器应用的关键技术。通过对电阻型超导限流器在模块化多电平换流器型直流系统中的应用场景分析,得到R-SFCL不同安装位置对其限流能力的影响,并改进了超导限流器和直流断路器配合下换流站闭锁初期的多端柔性直流系统短路电流迭代计算方法,在此基础上提出了基于人工免疫算法的R-SFCL柔性直流系统中的优化配置计算方法。最后,通过五端柔性直流系统实例研究,给出了该系统中R-SFCL的最佳安装位置、安装数量、限流电阻大小和限流效果。
The optimal configuration of a resistive superconducting fault current limiter(R-SFCL)in an HVDC flexible system is the key technology for R-SFCL applications.First,the current-limiting effect of R-SFCL at different installation positions is obtained by analyzing the R-SFCL application scenarios in an MMC-type HVDC system.Then,the fault current iterative calculation method for the multi-terminal HVDC flexible system after the blocking of the convert station is improved under the coordination of the R-SFCL and a DC circuit breaker.On this basis,an optimal configuration calculation method for the R-SFCL in the HVDC flexible system is proposed,which is based on the artificial immune algorithm.Finally,through a case study of a five-terminal HVDC flexible system,the optimal installation position,installation quantity,current-limiting resistance and current-limiting effect of R-SFCL in the system are given.
作者
李斌
杨嵩
王常骐
李清泉
肖磊石
盛超
LI Bin;YANG Song;WANG Changqi;LI Qingquan;XIAO Leishi;SHENG Chao(Key Laboratory of Smart Grid of Ministry of Education,Tianjin University,Tianjin 300072,China;Electric Power Research Institute,Guangdong Power Grid Co.,Ltd,Guangzhou 510080,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2021年第2期32-40,共9页
Proceedings of the CSU-EPSA
基金
国家自然科学基金委智能电网联合基金资助项目(U1866205)。
关键词
超导限流器
柔性直流系统
优化配置计算
安装位置
免疫算法
superconducting fault current limiter(SFCL)
HVDC flexible system
optimal configuration calculation
installation position
immune algorithm
