How to get auxiliary power for 500kV switchyard which does not have any transformer - just breakers and disconnects? Can we buy 300kV/7.2kV, ~300KVA single phase transformers? Any another ideas will be appreciated.
I need to find a 48V, 50 Ah batteries for remote substation in desert locations. The batteries should be instated in cabinets without ventilation. The temperature inside of the cabinets can reach 130F. Life expectancy 15-20 years with low maintenance requirements. Any suggestions will be...
We are looking to purchase 69kV or 138kV portable cables for our mobile transformer and use the cables of other temporary system needs. Currently, we are developing an equipment specification and would like to know if there are any major differences in physical properties that portable cables...
When you select insulator and/or bushing creepage distances in mm/kV, the major criteria is a pollution level, see IEEE 1313.2-1999, p.18.
Should we apply the contamination level criteria based on IEEE 1313.2-1999, during selection of BIL and creep for substation insulators?
Does any have any...
Has any company experience to operate 500/550kV substation equipment (circuit breakers, CCVTs, disconnect switches, surge arresters, etc.) at 575kV continuously, up to 2 hours.
Has any company experience voltage harmonics, excessive transients or/and equipment failure problems at HV/EHV transmission systems when large utility-scale non-traditional generations ( wind, PV, etc.) starting connected directly to the transmission substations?
