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Article | REF: D4600 V1

Medium-voltage substations

Authors: Georges VALENTIN, René FONDEUR, Bernard JOYEUX‐BOUILLON, Jean‐Claude TURPAIN

Publication date: September 10, 1996

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8. Building HV substations

8.1 Protection relays and recent developments

The design and implementation of protection systems must take into account a number of criteria that contribute to satisfying the requirements of users and the energy distributor: quality and continuity of supply.

A good protection system must be :

  • reliable and available;

  • selective to isolate only the faulty part of the network, without disturbing the healthy part;

  • to eliminate transient stresses and limit potential damage.

  • If the basic principles of defect detection and elimination have not changed significantly over time, then this is not the...

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