Instrument Voltage Transformers (IVTs) introduce errors in power quality measure due to resonance's effects at high frequency. The accuracy of IVTs, definite by standards, is only about nominal frequency and does not consider high frequency response. The paper reports the IVTs experimental analysis on resonance's disturbances transferred to secondary side of Instrument Voltage Transformer. In particular the main results obtained from a laboratory survey on three currently marketed IVTs with same features but different manufacture are presented. IVTs are tested with very fast front voltage impulse whose waveform is similar to the characteristic one of SF6 switches operations.
IVTs Behavior in SF6 Switching Transients: Fast Front Voltage Impulse / Grasselli, Umberto; Lamedica, Regina; Sangiovanni, Silvia; Ruvio, Alessandro; M. C., Cavarretta. - (2014), pp. 823-827. (Intervento presentato al convegno International Conference on Harmonics and Quality of Power tenutosi a Bucharest nel 25-28 May 2014) [10.1109/ICHQP.2014.6842895].
IVTs Behavior in SF6 Switching Transients: Fast Front Voltage Impulse
GRASSELLI, Umberto;LAMEDICA, Regina;SANGIOVANNI, Silvia;RUVIO, ALESSANDRO;
2014
Abstract
Instrument Voltage Transformers (IVTs) introduce errors in power quality measure due to resonance's effects at high frequency. The accuracy of IVTs, definite by standards, is only about nominal frequency and does not consider high frequency response. The paper reports the IVTs experimental analysis on resonance's disturbances transferred to secondary side of Instrument Voltage Transformer. In particular the main results obtained from a laboratory survey on three currently marketed IVTs with same features but different manufacture are presented. IVTs are tested with very fast front voltage impulse whose waveform is similar to the characteristic one of SF6 switches operations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
