Author(s)

Cen Tian

Corresponding Author

Cen Tian

Abstract

Accurate fault location is of great significance to maintain the reliability of power supply in distribution network system. There are various research methods for fault location in distribution network. However, the access of various distributed power sources (photovoltaic, wind turbine, etc.) to distribution network has become a trend in recent years. The access of these "non-traditional" power sources has changed the power flow distribution of traditional distribution network from one-way to multi-direction, thus changing the fault signal intensity of distribution network, making the original fault location method no longer suitable for distribution network fault location with distributed power sources. This paper presents a distribution network fault location algorithm and its program implementation. It solves the problem of fault location at all points on the line. The algorithm has a small amount of calculation and a fast calculation speed. According to the fault overcurrent information obtained by feeder terminal unit (FTU), the information matrix is calculated to the information judgment matrix. The fault area can be directly identified by the information judgment matrix.

Keywords

Fault Overcurrent, Fault Location, Distribution Network, Algorithm