Title :
Differential equation based impedance measurement for series-compensated lines
Author :
Rosolowski, E. ; Izykowski, J. ; Kaszenny, B. ; Saha, M.M.
Author_Institution :
Wroclaw Univ. of Technol., Poland
Abstract :
Differential equation based digital algorithms for measurement of a fault loop impedance are studied in relation to their application for protective relaying of single and parallel series-compensated lines. Adaptation of the impedance measurement algorithms to the specific nature of transients in the relaying signals for the series-compensated lines is presented. Correct measure of the distance to a fault is provided by incorporating the representation of the series-capacitor equipped with metal-oxide varistor into the fault loop models. The algorithms were investigated for a variety of fault conditions using ATP-EMTP.
Keywords :
compensation; differential equations; electric impedance measurement; power system analysis computing; power system measurement; power transmission lines; reactive power; ATP-EMTP; computer simulation; differential equation; digital algorithms; fault distance measurement; fault loop impedance; impedance measurement algorithms; metal-oxide varistor; protective relaying; relaying signals transients; series-capacitor; series-compensated power lines; Capacitors; Circuit faults; Differential equations; Digital relays; Frequency; Impedance measurement; Pollution measurement; Protection; Protective relaying; Varistors;
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.1999.826637
