Frequency domain method of fault location of high-voltage direct current earth electrode line based on distributed parameter model

The invention relates to a frequency domain method of fault location of a high-voltage direct current earth electrode line based on a distributed parameter model, and belongs to the field of fault location technologies of power systems. The frequency domain method comprises the following steps of computing voltage distribution along the earth electrode line from a measuring end by utilizing the measured voltage and current of a fault line when the high-voltage direct current earth electrode line has an earth fault; calculating an electrode address point by utilizing the measured voltage and current of a non-fault line, and computing the voltage and the current of the electrode address point; computing the voltage distribution along the earth electrode line from an electrode address end by utilizing the voltage and the current of the electrode address point, writing out a fault location function according to pure resistivity of a transition resistor at the fault point, and computing a fault distance through solving the location function. The frequency domain method is capable of implementing the fault location of a single end of the earth electrode on the basis of the conventional fault measurement data, parameters of an opposite end are not needed, and the frequency domain method has the advantages of simple algorithm and easiness in implementation.