摘要
高压直流故障电流限制器HVDCFCL(High Voltage Direct Current Fault Current Limiter)在环境特殊的先进实验超导托卡马克EAST(Experimental Advanced Superconducting Tokamak)核聚变实验装置,尤其是一些对电气故障敏感的关键设备上起到了有力的保护作用。为设计高可靠性的HVDCFCL装置,在Fink、Baker和Owren(F-B-O)原设计模型等效时变电阻忽略并联电感模型基础上,给出了限制器铁芯叠片内层部分完全饱和的分析方法。建立了考虑等效并联电阻与电感的仿真模型。利用其结构约束条件,设计完成的新模型测试结果表明,当最内层铁芯叠片未完全饱和时,实测测试结果与理论分析结果基本吻合;在电压等级较高时,随着铁芯叠片饱和度逐渐升高,吻合度随之降低,此时考虑并联电感效应的仿真波形与实测波形有较好的吻合。改进了F-B-O高压直流故障电流限制器设计方法,并给出了相关仿真方案,仿真结果验证其能将故障电流限制在400A以内。
High voltage direct current fault current limiter（HVDCFCL） is one of the key devices in the system of the experimental advanced superconducting TOKAMAK（EAST） to protect the components which are sensitive to electrical accident.The theory for HVDCFCL was developed by F-B-O model which considered only the resistance effects and gave the design under saturation condition.To design more compact limiter,the analysis inner partly complete saturation is researched.The simulation model based on the concepts of the equivalent resistance and inductance in parallel mode is set up.Based on the constraint condition of HVDCFCL,the designed miniature result shows that a good agreement between calculated and measured current waveform and time constant respectively.The result shows that the fault peak current is higher than the original F-B-O model after taking it into account.The code is calibrated with the test results.Based on the above researches,simulation code for EAST auxiliary heating was designed and simulated results show that the short circuit current can be limited within 400 A.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2013年第5期134-139,共6页
Journal of Wuhan University of Technology
基金
国家磁约束核聚变能研究专项资助(2010GB108003)
