5. Hydraulic alternator and compensator protection

Hydraulic turbine-driven alternators and synchronous compensators are essentially the same as turbo-alternators, apart from their rotational speed. The faults that can occur in these two classes of machine are therefore of a similar nature.

In general, the only differences are the relay action threshold settings, which are specific to the machine's operation on the network. The consistency of a protection system can also vary according to the power of the group and its importance in relation to the network.

5.1 Internal defects

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Hydraulic alternator and compensator protection

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Bibliography

(1) - SYBILLE (G.), WILDI (T.) - Électrotechnique. - De Boeck (2008).
(2) - SCHROEDER (C.) - Électrotechnique des centrales électriques. - Collection EDF, TEC & DOC (2018). PDF disponible en ligne

Standards and norms

International Electrotechnical Commission (IEC) standards

Rotating electrical machines – Part 1: Rated characteristics and operating characteristics. - IEC 60034-1 - 2022
Isolation coordination – Part 1: definitions, principles and rules. - NF EN IEC 60071-1 - 2019
Relais de mesure et dispositifs de protection (plusieurs dates d'édition selon les parties). - IEC 60255 -
Analyse des modes...

Regulations

European Commission Regulation 2016/631 of April 14, 2016 establishing a network code on requirements for the connection of electricity generating installations to the grid.