Title :
The study of ground distance protection of 500kV quadruple-circuit transmission lines on the same tower
Author :
Sun, Shujie ; Tai, Nengling ; Bo, Zhinqian
Author_Institution :
Shanghai Jiaotong Univ., Shanghai
Abstract :
This paper presents a kind of algorithm, which can decouple the electrical quantities of quadruple-circuit transmission lines and get completely independent 12 sequence components of quadruple-circuit transmission lines on the same tower system. Based on the analysis of transformation matrix and the impedance matrix of 12 sequence components, the principle of ground impedance relay and the corresponding protection setting scheme are discussed. Through PSCAD / EMTDC simulation software, the power transmission system model with quadruple-circuit transmission lines on the same tower under the voltage of 500 kV are established. The correct operation of protection scheme has been verified with extensive simulation studies.
Keywords :
impedance matrix; poles and towers; power transmission lines; power transmission protection; PSCAD/EMTDC simulation software; ground distance protection scheme; ground impedance relay; impedance matrix; power transmission system model; quadruple-circuit transmission line; tower system; transformation matrix; voltage 500 kV; Impedance; Independent component analysis; PSCAD; Poles and towers; Power system protection; Power system relaying; Power transmission lines; Protective relaying; Transmission line matrix methods; Transmission lines; distance protection; quadruple-circuit transmission lines on the same tower; zero sequence compensating coefficient; zero sequence current protection;
Conference_Titel :
Universities Power Engineering Conference, 2008. UPEC 2008. 43rd International
Conference_Location :
Padova
Print_ISBN :
978-1-4244-3294-3
Electronic_ISBN :
978-88-89884-09-6
DOI :
10.1109/UPEC.2008.4651514
