| Title |
Current Distribution Factor Based Fault Location Algorithms for Double-circuit Transmission Lines |
| Authors |
안용진(Ahn, Yong-Jin) ; 강상희(Kang, Sang-Hee) ; 최면송(Choi, Myeon-Song) ; 이승재(Lee, Seung-Jae) |
| Keywords |
Fault Location ; Current Distribution Factor ; Double Circuit Transmission Line |
| Abstract |
This paper describes an accurate fault location algorithm based on sequence current distribution factors for a double-circuit transmission system. The proposed method uses the voltage and current collected at only the local end of a single-circuit. This method is virtually independent of the fault resistance and the mutual coupling effect caused by the zero-sequence current of the adjacent parallel circuit and insensitive to the variation of source impedance. The fault distance is determined by solving the forth-order KVL(Kirchhoff's Voltage Law) based distance equation. The zero-sequence current of adjacent circuit is estimated by using a zero-sequence current distribution factor and the zero-sequence current of the self-circuit. Thousands of fault simulation by EMTP have proved the accuracy and effectiveness of the proposed algorithm. |