Open AccessInter‐circuit fault location algorithm in generalized unified power flow controller‐compensated double‐circuit transmission lines based on synchronous current and voltage phasors of line terminals
Author(s) -
Abasi Mahyar,
Joorabian Mahmood,
Saffarian Alireza,
Seifossadat Seyed Ghodratollah
Publication year - 2021
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/gtd2.12139
Subject(s) - phasor , fault (geology) , electric power transmission , control theory (sociology) , stuck at fault , voltage , transmission line , electronic circuit , line (geometry) , algorithm , fault indicator , computer science , controller (irrigation) , power (physics) , electronic engineering , topology (electrical circuits) , engineering , fault detection and isolation , electric power system , electrical engineering , mathematics , physics , geometry , agronomy , control (management) , quantum mechanics , artificial intelligence , seismology , biology , geology , actuator
Abstract An accurate inter‐circuit fault location algorithm for double‐circuit transmission lines compensated by a generalized unified power flow controller based on phasor analysis is presented. The proposed algorithm utilizes synchronous currents and voltages of the buses on both sides of the line to accurately calculate the fault location. Using the equations of sequence component circuits, the algorithm calculates voltage and current of the fault point on both circuits. Then, using boundary conditions equations for 98 types of inter‐circuit fault on the double‐circuit transmission lines, the accurate location of the fault is obtained. The number of boundary conditions equations varies depending on the type of faulty phases of the two circuits and the number of unknowns in the current and voltage equations of the fault point. The calculation of these boundary equations are also described. The results presented in the simulation section verify the validity and accurate performance of the proposed algorithm under different fault conditions.