A fault location method for double-line direct supply traction network

Abstract

The invention discloses a multiple-track direct-supply traction network fault location method, which comprises the following steps: establishing a setting value area in a substation feeder protectiondevice, and inputting setting valves according to traction network line parameters; and cooperating with a substation feeder protection function to realize fault location. The beneficial effects are that the method solves the problem of influence of uplink / downlink mutual reactance of the multiple-track direct-supply traction network on reactance-method fault location and realizes accurate calculation of fault distance of the multiple-track direct-supply traction network; the method can obtain accurate fault distance for both the multiple-track direct-supply traction network with uniformly-distributed line parameters and the multiple-track direct-supply traction network with non-uniformly-distributed line parameters; the method can realize fault location by adding a corresponding softwarefunction in the substation feeder protection device without need of a special fault location device, and has the advantages of low cost, simple realization and accurate distance measurement and the like; and through cooperation of the fault location function and a protection function, fault location of the multiple-track direct-supply traction network under various fault conditions is realized.

Description

technical field [0001] The invention relates to the technical field of an electrified railway traction network, in particular to a fault location method for a double-track direct supply traction network. Background technique [0002] Electrified railway traction network has the characteristics of complex structure and high failure rate. Accurate and reliable fault location is very important for quickly finding fault points, repairing fault lines in time, shortening power outage time, and ensuring transportation order. [0003] For the fault location method of the direct supply traction network, the reactance method is mainly used in current engineering applications. The prerequisite for the application of the reactance method is that the fault distance and the fault reactance have a linear or piecewise linear relationship, so it is suitable for single-line direct supply traction networks. But for the double-line direct supply traction network, due to the influence of uplink...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fault location method for double-line direct supply traction network based on mutual reactance compensation, which can solve the influence of uplink and downlink mutual reactance on the double-line direct supply traction network on the fault location of the reactance method, and can be applied to different line parameters. Evenly distributed double track direct supply traction network

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