Simulation Study of Single Line-to-Ground Faults on Rural Teed Distribution Lines
Teed lines are widely used in rural power networks in China. The paper theoretically analyzes the voltages and currents when a single line-to-ground fault occurs, constructs a new mathematical model for fault location on the teed lines, performs corresponding MATLAB simulations. Simulation results show that currents near the source (bus M) are almost independent of fault posi-tions and fault resistances. However, voltages at bus M are sensitive to fault positions while fault voltages at fault position are only sensitive to transient resistances. A novel approach to fault location on teed lines is proposed. First, the faulted line is identified with remote control equipment. Then, the transient resistances are calculated according to the fault voltages. And at last, the fault distances are computed according to the voltages at bus M and the calculated transient resistances.
simulation fault location teed line single line-to-ground fault
Wanying Qiu
School of Basic Sciences, East China Jiaotong University, Nanchang, P. R. China
国际会议
南昌
英文
521-524
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）