From Longman Dictionary of Contemporary Englishsubstationsub‧sta‧tion /ˈsʌbˌsteɪʃən/ noun [countable] HPEa place where electricity is passed on from the place that produces it into the main system
Examples from the Corpus
substation• Henceforth, part of Sutton Power Station became a substation and the rest was leased away.• This will also house a substation for London Electricity.• Carrillo, chief of the La Presa substation, was shot Monday night as he arrived home from work.• A somewhat different system simulated the effect of momentarily jamming an iron bar across the terminals in the substation.• Thursday afternoon, federal agents moved in and out of the substation carrying metal briefcases.• No permanent damage was done to the substation, officials said.• Two substations will be required to feed the catenary. 