FIELD: electrical engineering.
SUBSTANCE: invention can be used in electrical engineering for protecting equipment in high- and super-high voltage distribution devices. When there is a short circuit in any connection, values of parametres which are dangerous for the high-voltage equipment are recorded: when current value in each connection exceeds a given value or if voltage drops below a given value. Actuation of relay protection for any connection shunts the short circuit and the connection, for which the current value is below a given value, is disconnected, after which deshunting is done.
EFFECT: increased selectivity and faster disconnection of faulty connection when current values exceed given values.
3 cl, 1 dwg
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