| Title |
Modeling of a High Impedance Fault Using Two Time-Varying Resistances |
| Authors |
남순열(Nam, Soon-Ryul) ; 강용철(Kang, Yong-Cheol) ; 박종근(Park, Jong-Keun) |
| Keywords |
High impedance fault ; Buildup ; Shoulder ; Nonlinearity ; Asymmetry ; Time-varying resistance |
| Abstract |
A more reliable algorithm for detecting a high impedance fault (HIF) requires voltage and current at the relaying point containing information of HIF characteristics including buildup/shoulder as well as nonlinearity/asymmetry. This paper presents a modeling method of an HIF in a distribution system. In order to do this, the proposed method uses two series time-varying resistances (TVRs) controlled by Transient Analysis of Control Systems (TACS) in EMTP. One TVR is employed for nonlinearity/asymmetry and then the other TVR for buildup/shoulder. The proposed method is implemented in EMTP and thus the voltage and current at the relaying point can be obtained. |