Optimization of Operating Conditions of Third Harmonic Ground-Fault Protection System of Generator-Transformer Unit With Two-States Transverse Parameters

Third harmonic ground-fault protection system of unit-connected generator with two parallel branches per phase

“…This means that the groundfault protection system should detect also ground faults in the zone close to the generator neutral. The protection system excited by the ratio of voltage 3rd harmonics in the neutral and at the terminals belongs to such systems [11][12][13][14][15].…”

A new digital ground-fault protection system for generator–transformer unit

“…Tel. : +48 71 3203562; fax: +48 71 3202656. generator-transformer unit operation, these protection systems may maloperate [3,7,8].…”