LIU Jia-fang, LI Min, RAO Zhang-quan, et al. Research on Disturbance in the Secondary Side of PT During Disconnector Switching in 500 kV Substation[J]. High voltageapparatus, 2005, (6): 423-424.
LIU Jia-fang, LI Min, RAO Zhang-quan, et al. Research on Disturbance in the Secondary Side of PT During Disconnector Switching in 500 kV Substation[J]. High voltageapparatus, 2005, (6): 423-424.DOI:
In order to study the transient disturbance signal of the secondary side of PT
which is generated by disconnector switching in 500 kV substation
a test is made in the field and the time and frequency domain character in details
such as the pulse peak
the number and the interval time of the pulses and the spectrum of signals are obtained. The results show that the single disturbance signal is attenuating and oscillating
and the dominant frequency band is between 0.12 MHz. There are a lot of pulses with the peak reaching near 400 V in one switching of opening or closing.