TY - JOUR
N2 - The topology of low-voltage distribution systems changes with the load or the on/off position of the circuit switch. This will affect power flows, losses, and so on. This paper submits a new method to identify the topology of a low-voltage feeder using the injection high-frequency signal. An inductor can block the high-frequency signal. It can change the propagation direction of the injected high-frequency signal to make it propagate unidirectionally along the low-voltage feeder. By injecting a 5 MHz sinusoidal signal from the upstream direction of the low-voltage feeder, all the line segments and devices on the feeder can be identified. The wavelength of the high-frequency signal is short. The wavelength of the 5 MHz signal is 60 meters. Through the delay of different observation points on the feeder, the length of the line section can be roughly calculated. The highfrequency signal has an obvious reflection on the feeder. Using this feature, we can roughly calculate the length of the line segment. The correctness of the method is demonstrated by MATLAB simulation verification.
L1 - http://journals.pan.pl/Content/121560/PDF/art04.pdf
L2 - http://journals.pan.pl/Content/121560
PY - 2021
IS - No 4
EP - 800
DO - 10.24425/aee.2021.138261
KW - high-frequency signal injection
KW - low-voltage overhead line
KW - topology identification
A1 - Ge, Haotian
A1 - Xu, Bingyin
A1 - Zhang, Xinhui
A1 - Bi, Yongjian
PB - Polish Academy of Sciences
VL - vol. 70
DA - 2021.11.30
T1 - Low-voltage overhead lines topology identification method based on high-frequency signal injection
SP - 791
UR - http://journals.pan.pl/dlibra/publication/edition/121560
T2 - Archives of Electrical Engineering
ER -