TAN Ying-hui, YAO Wen-jun, LI Pei-jun, et al. Malfunction Analysis of a 500kV Transformer Gas Relay with Countermeasure[J]. High voltageapparatus, 2012, 48(3): 117-122.
TAN Ying-hui, YAO Wen-jun, LI Pei-jun, et al. Malfunction Analysis of a 500kV Transformer Gas Relay with Countermeasure[J]. High voltageapparatus, 2012, 48(3): 117-122. DOI: 10.13296/j.1001-1609.hva.2012.03.024.
For a malfunction of heavy gas protection of a 500 kV transformer
the structure and working principle of the gas relay are described.Investigation and calculation indicate that this malfunction of the gas relay is due to blockage of the dehydrating breather
negative pressure in the oil tank
and improper structure of the gas collection box.Corresponding emergency measure is put forward