LIU Yun-peng, LU Fang-cheng, LI Cheng-rong, et al. On-line Monitoring Transformer’s Bushing Insulation Based on Its Tap Capacitive Divider[J]. High voltageapparatus, 2004, (2): 121-123.
LIU Yun-peng, LU Fang-cheng, LI Cheng-rong, et al. On-line Monitoring Transformer’s Bushing Insulation Based on Its Tap Capacitive Divider[J]. High voltageapparatus, 2004, (2): 121-123.DOI:
On-line monitoring the dielectric loss of power transformer bushing has been proven to be effective tool in evaluating the condition of its insulation. The measured signal is abstracted from capacitor
which is in series with the bushing tap. In this paper
the absolute and relative methods are combined
and the phase error in transmission process is analyzed based on transmission line theory. Field monitoring result shows that this method is effective.