3. Defect Removal
To fulfill their purpose, protective measures must:
detect the presence of a defect;
identify the affected structure;
control the disconnecting devices, the opening of which will isolate this facility (and only this facility) from the rest of the network.
3.1 Fault detection
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Protection devices continuously monitor the electrical state of the power system by tracking a number of characteristic electrical parameters (currents, voltages, frequency) or combinations of these parameters (power, impedance, etc.); they can also monitor other physical parameters such as fluid pressure or temperature.
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Defect Removal
Service Resumption Automata
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