Inspec keywords: power transmission faults; power transmission lines; power distribution lines; power transmission protection; fault diagnosis; relay protection; earthing; power system protection; power distribution protection; power distribution faults

Other keywords: ground fault protection; directional element; numerical relays; transmission lines; distance protection; multicriteria phase selector; teleprotection scheme; zero-sequence current; three-phase system; distribution lines

Subjects: a.c. transmission; Distribution networks; Power system protection