A storm damaged one of the main power lines to import electric energy causing a total shutdown of the electrical grid. The network needs to be restarted. What could be the first step to restart the grid ?

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The answer is WRONG. This situation is called Black Start. To provide a black start, some power stations have small diesel generators, normally called the black start diesel generator (BSDG), which can be used to start larger generators, which in turn can be used to start the main power station generators.