Current Identification in Vacuum Circuit Breakers by Inverting Magnetic Field Data
An inverse problem is solved, in order to identify a current distribution from measurements of its magnetic field in a closed, opaque and optically difficult to access, high voltage, vacuum circuit breaker. We have followed the standard method of least squares approximation by regularized singular value decomposition. We have verified the possibility of de-noising the sampled signals by means of a Savitsky-Golay filter in the time domain. Finally, we have considered the possibility to increase the spatial resolution of the current density approximation by introducing additional sensors, more distant from the circuit breaker, provided that suitable accuracy and range requirements are met.
L.Ghezzi L.Di Rienzo D.Piva Dongwei Li
ABB S.p.A., Viale dellIndustria 18,20010 Vittuone, Italy Dipartimento di Elettrotecnica, Politecnico di Milano, Piazza Leonardo da Vinci 32,20133 Milano, Ita Dipartimento di Elettrotecnica, Politecnico di Milano, Piazza Leonardo da Vinci 32,20133 Milano, Ita
国际会议
西安
英文
65-68
2011-10-23（万方平台首次上网日期，不代表论文的发表时间）