Title :
The application of neural networks and Clarke-Concordia transformation in fault location on distribution power systems
Author :
Sousa Martins, L. ; Martins, J.F. ; Pires, V. Fernão ; Alegria, C.M.
Author_Institution :
Dept. of Electr. Eng., Inst. Politecnico de Setubal, Portugal
Abstract :
This paper presents a new approach to fault location on distribution power lines. This approach uses an artificial neural network based learning algorithm and Clarke-Concordia transformation. The /spl alpha/,/spl beta/,0 components of line currents resulting from the Clarke-Concordia transformation are used to detect all types of fault. The neural network is trained to map the nonlinear relationship existing in fault location equations. The proposed approach is able to identify and locate all different types of faults (single line to ground, double line to ground, line-to-line and three-phase short-circuit). This approach is subdivided into several main steps: Data acquisition, corresponding on three-phase current signals; Mathematical treatment by the Clarke-Concordia transformation; Fault identification, obtained by the analysis of fault and pre-fault data; Fault location artificial neural network based learning algorithm. The fault position is presented as the output of the neural network on which, as the input, it was considered the eigenvalue of matrix representing transformed line current. Results are presented which shows the effectiveness of the proposed algorithm for a correct fault location on distribution power system networks.
Keywords :
fault location; neural nets; power distribution faults; power system analysis computing; Clarke-Concordia transformation; computer simulation; distribution power systems; double line to ground fault; fault location; learning algorithm; line-to-line fault; neural networks; single line to ground fault; three-phase short-circuit fault; Artificial neural networks; Data acquisition; Electrical fault detection; Fault detection; Fault diagnosis; Fault location; Neural networks; Nonlinear equations; Power system faults; Signal processing;
Conference_Titel :
Transmission and Distribution Conference and Exhibition 2002: Asia Pacific. IEEE/PES
Conference_Location :
Yokohama, Japan
Print_ISBN :
0-7803-7525-4
DOI :
10.1109/TDC.2002.1177783