Title :
Some improvements in the three-phase differential equation algorithm for fast transmission line protection
Author :
Akke, Magnus ; Thorp, James T.
Author_Institution :
Sydkraft AB, Malmo, Sweden
fDate :
1/1/1998 12:00:00 AM
Abstract :
This paper presents some improvements of the differential equation algorithm for transmission line protection. The improvements are: fault classification; new filtering; and a new algorithm for three-phase faults. Simulation results indicate a nominal operation time of 5-7 ms for three-phase faults and slightly higher for other fault types
Keywords :
differential equations; power system protection; power transmission lines; relay protection; digital relay; distance relay; fast transmission line protection; fault classification; filtering; three-phase differential equation algorithm; three-phase faults algorithm; Current transformers; Differential equations; Fault location; Filtering; Frequency; Power system protection; Protective relaying; Relays; Stability; Transmission lines;
Journal_Title :
Power Delivery, IEEE Transactions on
