Inertia (slowness) of Zero Order Components Filter
For realization of fast measuring relays with frequency-selecting elements that should have given zero initial conditions in transitive process, the initial element for relay switching after occurrence of short circuit is needed. Initial element is realized according to known principles, where one is usage of event or change in asymmetry of voltage and currents in electrical network. In this case initial element is consisted of inverse order voltage or current filter (filters). Group of inverse order voltage filters that are used in measurement of symmetric components in electrical network was analysed. Ill. 8, bibl. 8 (in English; abstracts in English, Russian and Lithuanian).
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