The method of Earth Fault Detection on the DC transmission line road of the high pressure comprising higher harmonic voltage component filter

摘要

Application: in electric power for detecting a short circuit on the line DC high voltage, provided with harmonic filters. The essence of the method: is to register the curve shape of the linear voltage corrupted transmission pole separation therefrom informative part of the emergency signal component, determining spectral characteristics of this component, separation therein frequency f0 with the greatest amplitude corresponding oscillation process discharge line across the injury site , determining the attenuation Oo vibrational frequency f0 process for calculating the distance and taking into account the values ​​of equivalent inductance transducer Ai and higher filter settings harmonic of both the real part value: I Uv2-4AS 2 B + A, where A, B, and C are complex coefficients depending on the parameters of the converter station with filters of higher harmonics and the operator form: P "+ 1P of f0. 2 yl. (LS