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英语翻译A New Principle of Discrimination between Inrush Current

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英语翻译
A New Principle of Discrimination between Inrush Current and Internal Fault Current of Transformer Based on Self-Correction Function
前言:Abstract--When differential protective relays are applied to transformer protection,how to identify the magnetizing inrush current and short circuit current caused by internal fault is the key problem.Here,regarding the inrush current and short circuit current as the random signal,the sampled data are analyzed by correlation function principle in the digital signal processing (DSP)and the self-correlation function of the sampled data is calculated.Through the similar comparison operation conducted by standard self-correlation function (SSCF) formed with sinusoidal current the short circuit current and the inrush current can be distinguished by the magnitude of similarity coefficient.The results in Electrical Power Dynamic Laboratory (EPDL) verify the feasibility of the proposed method.Index Terms--Transformer,Differential protective relay,SSCF,Correlation function,Inrush current,Short circuit current,Random signal,EPDL.
正文:large power transformers are a class of very expensive and vital components of electric power systems.Accordingly,higher demands are imposed on the study of their protection techniques; this includes the requirements of dependability associated with no mal-operations,security associated with no false tripping,and operating speed associated with short fault clearing time.Protection of large power transformers is a very challenging problem in power system relaying
英语翻译A New Principle of Discrimination between Inrush Current
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