论文信息 - A method based on high frequency electromagnetic transients for fault location on grounding grids

A method based on high frequency electromagnetic transients for fault location on grounding grids

In this work, a modified version of the Time-Difference-of-Arrival method is developed and applied for diagnosing faults (discontinuities) on ground grids. The method is sucessfully applied, since wideband signals are used for achieving sufficient resolution. FDTD simulations are used for testing the method and the numerical simulations are experimentally verified. Maximum deviation of approximatelly 10 cm from the real position of fault is observed.

Nilton R. N. M. Rodrigues | Rodrigo M. S. de Oliveira | Lorena F. P. Carvalho | Jose Felipe S. de Almeida

[1] Rodrigo M. S. de Oliveira,et al. Novel Technique for Locating an Intruder in 3D Environments by Using a Cooperative System of Multistatic Radars , 2011 .

[2] F. Dawalibi. Electromagnetic Fields Generated by Overhead and Buried Short Conductors Part 2 - Ground Networks , 1986, IEEE Transactions on Power Delivery.

[3] Wu Xiang-dong. CORROSION ANALYSIS AND COUNTERMEASURES FOR GROUNDING NET OF 500kV TRANSMISSION LINES , 2002 .

[4] Allen Taflove,et al. Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[5] Wenguang Chen,et al. Review of Grounding Grids Corrosion Diagnosis , 2013 .

[6] FDTD simulation of a multistatic radar using ultra‐wideband pulses for indoor environments , 2005 .

[7] Hu Xue. Research on Corrosion and Protection of Grounding Grid , 2002 .

[8] Daniel D. Lee,et al. Blind Sparse-Nonnegative (BSN) Channel Identification for Acoustic Time-Difference-of-Arrival Estimation , 2007, 2007 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics.

[9] Li Guang-he. Research of fault diagnosis of grounding grid of electric power plants and substations , 2009 .

[10] R. Melo e Silva de Oliveira,et al. Computational Environment for Simulating Lightning Strokes in a Power Substation by Finite-Difference Time-Domain Method , 2009 .

[11] Shizhe Song,et al. STUDY ON THE ELECTROCHEMICAL SENSING SYSTEMFOR MONITORING/DETECTING MARINE STEEL CORROSION , 2009 .