substation

plural substations · alternative sub-station

1. Any subordinate station.
   1. businessA site where electricity supplied by long-distance (high-voltage) transmission lines is transformed or regulated for local (low-voltage) distribution.

      "We've got power upgrades at substations dotted all the way along the Piccadilly line.

      2026 July 22, Tom Edwards, “New Trains: Testing times”, in RAIL, number 1066, page 30

      3 more examples

      The utility now wants the network to be undergrounded in the urban areas, which would mean substations with 33 kV distribution swtichgear.

      2006, Janes Northcote-Green, Robert Wilson, “Design, Construction and Operation of Distribution Systems, MV Networks”, in Control and Automation of Electrical Power Distribution Systems, CRC Press, →ISBN, page 110

      Meanwhile, an upgraded power supply at Sundon substation, between Leagrave and Harlington, will be commissioned concurrent with the overhead line connection and will be sufficient to power the initial electrified Corby services.

      2019 October 28, Philip Sherratt, “Midland Main Line upgrade presses on”, in Modern Railways, page 62

      The Project also includes construction of a new MVEC substation (the Laketown Substation). […] Great River Energy owns and operates more than 5,100 miles of transmission line (69-kV or higher) and owns more than 100 substations in Minnesota, North Dakota, South Dakota, and Wisconsin.

      2024 August 19, “LAKETOWN 115-kV TRANSMISSION LINE PROJECT IN CARVER COUNTY, MN”, in Great River Energy, page 15

   2. A satellite police station serving one neighborhood or part of a larger jurisdiction.
   3. A branch post office.