Title :
New Digital Algorithm for Adaptive Reclosing Based on the Calculation of the Faulted Phase Voltage Total Harmonic Distortion Factor
Author :
Zoran M. Radojevic;Joong-Rin Shin
Author_Institution :
Dept. of Electr. Eng., Konkuk Univ., Seoul
Abstract :
This paper presents a new numerical algorithm suitable for determining adaptive dead time, and blocking automatic reclosing during permanent faults on overhead lines. It is based on terminal voltage input data processing. The decision if it is safe or not to reclose is determined by the voltage signal of faulted and tripped line phase using the total harmonic distortion factor calculated by discrete Fourier transform. The algorithm was successfully tested using signals recorded on the real power system. The tests demonstrate the ability of the presented algorithm to determine the secondary arc extinction time and to block unsuccessful automatic reclosing of high-voltage lines with permanent fault
Keywords :
"Voltage","Total harmonic distortion","Circuit faults","Power transmission lines","Conductors","Power system transients","Stability","Power system faults","Power system protection","Delay"
Journal_Title :
IEEE Transactions on Power Delivery
DOI :
10.1109/TPWRD.2006.886781