Title :
Development of a PCM Current Differential Relaying System Using Fiber-Optic Data Transmission
Author :
Sugiyama, Tokio ; Kano, Takayoshi ; Hatata, Minoru ; Azuma, Shinichi
Author_Institution :
Kansai Electric Power Co., Inc.
Abstract :
As demand for electric power has increased, EHV cable systems have been introduced into city areas; in this situation, problems of system protection that may arise when pilot-wire protection is used include electromagnetic induction, limitation of line length, etc. Last year, we solved those problems by developing a PCM current differential relaying system using fiber-optic data transmission. This system has been installed and operation has started on the 275 KV cable line (MINAMI OSAKA s/s -- SENBOKU s/s).
Keywords :
Cities and towns; Communication channels; Data communication; Optical fiber cables; Phase change materials; Power cables; Power system protection; Power system relaying; Protective relaying; Relays;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1984.318593
