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Black start

For the species of bird, see Blackstart.
City skyline at dusk with only a very few office building windows lit
Toronto during the Northeast blackout of 2003, which required black-starting of generating stations.

A black start is the process of restoring an electric power station, a part of an electric grid or an industrial plant, to operation without relying on the external electric power transmission network to recover from a total or partial shutdown.[1]

Power to restart a generating station or plant may come from an on-site black start standby generator. Alternatively, where a large amount of power is required, a tie-line to another generating plant or to an emergency generator may be used to start the facility. Once the main generating units are running, the electrical transmission network can be re-connected and electrical loads restored.

Black-start power may be ensured by an agreement where a particular energy supplier is paid to make black start power available when required. Not all generating plants are suitable for providing black-start power to a network.

  1. ^ Knight, U.G. Power Systems in Emergencies - From Contingency Planning to Crisis Management John Wiley & Sons 2001 ISBN 978-0-471-49016-6 section 7.5 The 'Black Start' Situation
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