Title :
Overload protection of power lines
Author :
Hazi, Aneta ; Hazi, Gheorghe
Author_Institution :
Power Eng. Dept., Univ. Vasile Alecsandri, Bacău, Romania
Abstract :
The paper looks into configuring thermal image-type protections within the power lines numerical protections. The first part of the paper proposes a method to determine the time constant for the power line heating process. It is an essential measure for these protections. The cable lines are considered separately from the overhead lines. The protection characteristics offered by various numerical terminal providers are analyzed. Several configuration options are proposed depending on the specific situations. Examples are presented for cable lines and overhead lines.
Keywords :
numerical analysis; power cables; power overhead lines; power transmission protection; cable lines; configuration options; numerical terminal providers; power line heating process; power line overload protection; power lines numerical protections; thermal image-type protections; time constant; Conductivity; Conductors; Heat transfer; Heating; Power cables; Relays; Temperature; cable lines; numerical protections; overhead lines; time constant;
Conference_Titel :
Electrical and Power Engineering (EPE), 2014 International Conference and Exposition on
Conference_Location :
Iasi
DOI :
10.1109/ICEPE.2014.6970053
