3. Influence of transient conditions
Due to the nature of network elements (capacitors, inductances, resistors), the transition from one operating state to another, particularly when a short-circuit occurs, cannot take place instantaneously and gives rise to transient current and voltage regimes.
The performance of modern high-speed protection systems depends not only on their intrinsic qualities but also, to a large extent, on the response of the measuring gearboxes to these transient conditions.
The choice of protection is in fact consistent with that of the instrument transformers and vice versa; the analysis of the performance of protection systems must take into account the behavior of the whole.
3.1 Transient conditions created by network short-circuits
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Influence of transient conditions
Basic relay measurement functions
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