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...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。展开更多
The transformer core snubber （CS）, as one of the most important components in the EAST （experimental advanced superconducting tokamak） NBI （neutral beam injector） system, is designed to limit grid damage and pro...The transformer core snubber （CS）, as one of the most important components in the EAST （experimental advanced superconducting tokamak） NBI （neutral beam injector） system, is designed to limit grid damage and protect the ion source during periods of electrical breakdowns. A transformer core snubber is analyzed in detail in this paper. Several kinds of soft magnetic cores are presented and compared. With analysis and experiment on the basic characteristics of the cores, the most suitable materials are suggested. The circuit simulation code is established which could simulate faulty conditions with concentrated and distributed CS concepts. Based on the above work, an ion source CS is developed with series type of distributed topology. The CS has been subjected to experimental validation at 80 kV with a peak short-current of approximately 400 A in a real NBI system, which proves the accuracy of the adopted assumptions and the analysis method.展开更多
文摘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。
基金supported by National Magnetic Confinement Fusion Science Program of China (Nos.2010GB108003, 2011GB113005-1)in part by the National Magnetic Confinement Fusion Science Program of China (No.2010GB108003)+1 种基金the State Basic Research Development Program of China (973 Program 2011GB113005-1)the Large Scientific Project of EAST Auxiliary Heating Upgrade
文摘The transformer core snubber （CS）, as one of the most important components in the EAST （experimental advanced superconducting tokamak） NBI （neutral beam injector） system, is designed to limit grid damage and protect the ion source during periods of electrical breakdowns. A transformer core snubber is analyzed in detail in this paper. Several kinds of soft magnetic cores are presented and compared. With analysis and experiment on the basic characteristics of the cores, the most suitable materials are suggested. The circuit simulation code is established which could simulate faulty conditions with concentrated and distributed CS concepts. Based on the above work, an ion source CS is developed with series type of distributed topology. The CS has been subjected to experimental validation at 80 kV with a peak short-current of approximately 400 A in a real NBI system, which proves the accuracy of the adopted assumptions and the analysis method.
