A method based on the equivalent model of the t-HVDC line fault location of a ground electrode

The present invention relates to a method for high voltage direct current line grounding fault location based on T-type equivalent model belongs to the technical field of power system fault location. The present invention is a method of grounding when the HVDC line ground fault occurs, the fault point to the measurement end of the line in an amount equivalent to a T-type equivalent circuit, using single-ended voltage current measuring impedance calculation, the reactance component of an electrical impedance measurement measuring point to the fault is equal to the volume of the line end of the equivalent impedance of the reactance component, determining fault location function, the positioning function is calculated by solving the fault distance. The present invention is based on the T-type equivalent model of the equivalent circuit model, implemented using existing fault data electrode line fault locating a ground fault, it does not need a high sampling rate, easy on-site implementation. Using only a single-ended voltage and current can be measured without the need for the data terminal.