Title :
Detecting and Locating Faulty Nodes in Smart Grids Based on High Frequency Signal Injection
Author :
Pasdar, A.M. ; Sozer, Yilmaz ; Husain, Iqbal
Author_Institution :
Electr. Eng., Univ. of Akron, Akron, OH, USA
Abstract :
An on-line method for detecting and locating a faulty node in the utility grid is proposed for smart grids. The method is based on injection of high frequency (A-Band) current signal into the grid that would impose voltages (less than 1V according to EN50065-1 standard) on the nodes to determine changes in the impedance characteristics. This detection is accomplished on-line without interrupting the power flow in the network. The developed algorithm has been implemented within an electrical power system model. This low voltage network model has been tested with different fault scenarios. The proposed procedure is able to detect the faulty nodes with high accuracy.
Keywords :
fault diagnosis; fault location; load flow; power system protection; smart power grids; A-band current signal; EN50065-1 standard; electrical power system model; fault node detection; faulty node location; high frequency current signal; high frequency signal injection; impedance characteristics; low voltage network model; online method; power flow; smart grids; utility grid; Current measurement; Frequency measurement; Impedance; Load modeling; Smart grids; Smart meters; Voltage measurement; Faulty node detection; illegal electricity usage; signal injection to grid; smart grid services;
Journal_Title :
Smart Grid, IEEE Transactions on
DOI :
10.1109/TSG.2012.2221148
