电力系统自动化2018，Vol.42Issue(4)：82-88,7.DOI:10.7500/AEPS20170912002
具备无闭锁穿越直流故障能力的直流自耦变压器
DC-DC Autotransformer with Uninterrupted Operating Capability During DC Fault
摘要
Abstract
A novel topology of DC/DC converter is proposed,termed as un-interrupted DC Autotransformer(DC AUTO), which has capability to ride through the DC fault on either side of the converter without de-blocking any devices.Firstly,the characteristics of the DC AUTO and its defects are analyzed.Aiming at the problem that current DC AUTO cannot ride through the DC fault,the requirements for the ability of riding through the DC fault are analyzed as well.On the basic of that, combined with the characteristics of the hybrid modular multilevel converter(hybrid-MMC),the hybrid-MMC number of DC AUTO with the ability of riding through the DC fault without de-blocking any devices is designed.Then,an effective control strategy is proposed to enable the converter keeping in the steady operation during both normal and fault conditions.Finally,a test system is built on PSCAD/EMTDC platform to verify the technical feasibility of the proposed converter and the effectiveness of the proposed control strategy.关键词
直流—直流转换/直流自耦变压器/高压直流变压器/直流故障/控制策略Key words
DC-DC conversion/DC autotransformer/high voltage direct current transformer/DC fault/control strategy引用本文复制引用
李梦柏,向往,左文平,姚良忠,林卫星,文劲宇..具备无闭锁穿越直流故障能力的直流自耦变压器[J].电力系统自动化,2018,42(4):82-88,7.基金项目
国家电网公司科技项目(NYN17201600314) （NYN17201600314）
中国博士后创新人才支持计划资助项目(BX201700088).This work is supported by State Grid Corporation of China(No.NYN17201600314)and Initiative Postdoctoral Supporting Program(No.BX201700088). （BX201700088）
