DEVELOPMENTS IN COMPARISON TECHNIQUES AND THE APPLICATION OF PHASE COMPARISON AND GENERALISED PHASE COMPARISON TECHNIQUE TO OBTAIN DISTANCE RELAY QUADRILATERAL CHARACTERSTICS

Abstract

Co ,p i n techniques give the best protection for Tra 6 ci c ion lines. Attempts have been mace to obtain the s. i types of c r°acteristic and ;particularly attention. bay been paid towards quadrilateral c aracter. ictic. tare atte pt iz :de to preee t the matte i z the development of all type8 of co parison technique and has been tried to cb ein the practical resa..ts also. !post recent and u2eTl tech .ique which care in pictar is , enerilicbd phase comparisontechnique, because by virtue of this all discontinuous types of char cteria can 'be obtained along itb circular characteristic. With the help of this only req zir d area can be enclosed as operating region and the tripping can be saved from power a ingQ and out of Step cone itio s'.