Load Shedding

Undervoltage Load Shedding

This paper discusses why voltage as well as frequency load shedding may be necessary to prevent major system blackouts. Investigations of recent blackouts [1,3,7] indicate that the root cause of almost all of these major power system disturbances is voltage collapse rather than the underfrequency conditions prevalent in the blackouts of the 1960 and '70s. More

Relion advanced protection & control.
BeijingSifang June 2016