Chapter 2: Adaptive operating time for overcurrent relays
Abstract
The protection of power systems by means of OCRs can suffer from functional limitations in terms of both their sensitivity to fault detection and the time delay in their operation, due to the need for coordination with other protection devices such as fuses and reclosers. The conditions specified for coordination result in unlikely conditions such as three-phase short circuit and maximum Thevenin impedance; this to establish the safety of the relay operation by defining boundary conditions, avoiding loss of selectivity of protection. However, under more common operating conditions, loss of sensitivity for fault detection can decrease the safety of protection and high operating ...
Get Overcurrent Relay Advances for Modern Electricity Networks now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
