| Title |
A High Speed Distance Relaying Algorithm Based on a Least Square Error Method |
| Authors |
강상희(Gang, Sang-Hui) ; 권태원(Gwon, Tae-Won) |
| Keywords |
Digital Distance Relay ; High Speed Relay ; Least Square Error Method |
| Abstract |
A high speed digital distance relaying algorithm based on a least square error method is proposed. To obtain stable phasor values very quickly, first, a lowpass filter which has very short transient period and no overshoot is presented. Secondly, the least square error method having the data window of 3 samples is used by applying a FIR filter which removes the DC-offset component in current relaying signals. Test results show that the proposed distance relaying algorithm detects most of internal faults within a half cycle after faults in a 154[kV] overhead transmission line system. |