Research on Low Power Current Transducer Used for Transient Protection
(0) Low power current transducer isolates and converts current at the secondary side of power system.With development of power systems,current transformer is required to accurately transfer transient fault current during the transition.Based on the equivalent circuit,the influence factor of transient characteristics of low power current transducer is discussed in depth.In order to reach a more realistic effect of aperiodic component current transfer,the secondary circuit time constant should be increased as much as possible under the premise that the low power current transducer does not saturate.For low power current transducer with restricted volume,by deducing the relationship between secondary circuit time constant and core edge width,a quantitative design and calculation method for transient low power current transducer is proposed,and then the optimal design schemes are obtained for different secondary wire diameters.The theoretical analysis coincides with the test results of the samples,and the theory is verified by practice.
low power current transducer transient characteristic aperiodic component secondary circuit time constant iron core
XU Lei LU Wei LI Li ZHU Xiaotong LIU Dongchao LIU Peng LIU Bin LIU Gaopei
Nanjing NR Electric Co.,Ltd.,Nanjing 211102,China
国内会议
南京
英文
437-445
2017-08-12（万方平台首次上网日期，不代表论文的发表时间）