9
Voltage Disturbances inAuxiliary Power Supply
9.1 Electromagnetic Disturbances in the Power Network
Many cases of malfunctioning of and even damages to microprocessors are caused as a result of the impact of electromagnetic disturbances (blackouts, noise, sags, spikes, surges) from the power supply network on operation of the digital protective relays (DPRs).
9.1.1 Blackout
A blackout results in a total loss of utility power:
Cause: Blackouts are caused by excessive demand on the power network, lightning storms, ice on power lines, car accidents, construction equipment, earthquakes, and other catastrophes.
Effect: Current work in RAM or cache is lost and there is total loss of data stored on ROM.
9.1.2 Noise
More technically referred ...
Get Power Supply Devices and Systems of Relay Protection 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.
