A Digital System for Directional - Comparison Relaying
- 1 May 1979
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-98 (3), 948-956
- https://doi.org/10.1109/TPAS.1979.319252
Abstract
The results and conclusions of a study of a directional-comparison protection system for a transmission line are given. The laboratory investigation of this system with two minicomputers communicating with each other via power line carrier is described. The system includes a directional-comparison blocking relaying scheme with first zone high- speed tripping. Also included is an out-of- step blocking scheme for power swing conditions. After the successful laboratory test program, the system has been installed in the field on a 500 kV, 116 km (72 mile) transmission line. Some preliminary discussion of the field installation is given.Keywords
This publication has 3 references indexed in Scilit:
- The Laboratory Investigation of a Digital System for the Protection of Transmission LinesIEEE Transactions on Power Apparatus and Systems, 1979
- An improved method for the digital protection of high voltage transmission linesIEEE Transactions on Power Apparatus and Systems, 1975
- Sampling for Computer Protection of Transmission LinesIEEE Transactions on Power Apparatus and Systems, 1974