DIAGNOSTICS OF THE POINT OF EARTH FAULT BY MEANS OF AN INJECTED TEST SIGNAL |
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| Karel Sokanský, Josef Gavlas, Pavel Válek |
- Abstract:
- The contribution deals with the basic description of a method for the diagnostics of the point of earth fault in the distribution network of 22 kV high-voltage long-distance lines. The method is based on the principle of impedance and uses the superposition of a suitably injected test signal on the line voltage. The method proposed is considered for localising the point of earth fault in the radial high-voltage long-distance lines that are operated with an ineffectively earthed neutral by the arc-suppression coil. The result of the method is not any absolute expression of the distance between the affected point and the initial point, but it is the determination of such section of the line, in which the earth fault could occur.
- Keywords:
- diagnostic, earth faults, test signal
- Download:
- IMEKO-TC4-2002-173.pdf
- DOI:
- -