Title :
Active power differential algorithm for protection of transmission lines
Author :
Oechsle, F. ; Feser, K. ; Schuster, N. ; Philippot, L.
Author_Institution :
Inst. of Power Trans. & High Voltage Technol., Stuttgart Univ., Germany
Abstract :
A differential algorithm for phase selective detection of high impedance single-phase-to-ground faults (HIF) on high voltage lines is presented. It is based on the recognition of the fundamental frequency active power consumption of a resistive fault. In order to maximize the sensitivity of the system, a method for the approximation of the measuring system´s actual uncertainties is proposed. Thus, adaptive tripping thresholds are realized. The algorithm presented relies on the superposition theorem (delta-principle).
Keywords :
electric impedance; electrical faults; power transmission faults; power transmission lines; power transmission protection; active power differential algorithm; adaptive tripping thresholds; delta-principle; differential algorithm; high impedance single-phase-to-ground faults; high voltage lines; phase selective detection; resistive fault; superposition theorem; transmission lines protection; Circuit faults; Electrical resistance measurement; Fault detection; Impedance; Loss measurement; Power measurement; Power system protection; Power transmission lines; Protective relaying; Voltage;
Conference_Titel :
Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on
Conference_Location :
Budapest, Hungary
Print_ISBN :
0-7803-5836-8
DOI :
10.1109/PTC.1999.826639
