Device for eliminating overvoltage of passing neutral section through silicon carbide fiber rope

Abstract

The invention relates to a device for eliminating overvoltage of a passing neutral section through a silicon carbide fiber rope. A neutral section of a contact network adopts a copper alloy conducting line, small-distance electrostatic induction enables distributed capacitors to exist between a neutral conducting line and power arm contact networks, electromagnetic energy is stored among the distributed capacitors, and electromagnetic oscillation overvoltage can occur when a locomotive comes in or goes out of an electricity slit phase. Supporting pillars Z1-Z8 are sequentially arranged on the power arm contact networks, the left power arm contact network is arranged at the end of a conducting line of the supporting pillar Z4 and is connected with the supporting pillar Z5, and a right power arm contact network is arranged at the end of a conducting line of the supporting pillar Z5 and is connected with the supporting pillar Z4. Silicon carbide fiber rope neutral lines are arranged between the supporting pillar Z1 and the supporting pillar Z8, and insulators are arranged on both the left power arm contact network and the right power arm contact network. The device for eliminating overvoltage of the passing neutral section through the silicon carbide fiber rope solves the problem that overvoltage enables a contact wire to be burnt down and causes a traction substation to trip when an electric locomotive passes through an articulated type electricity slit phase in the existing electrified electric railway, ensures a traction power supply system to operate safely and reliably and has strong practical value.

Description

technical field [0001] The invention belongs to the technical field of traction power supply systems for electrified railways, and in particular relates to a device for eliminating excessive phase-splitting overvoltages by using silicon carbide fiber cables. Background technique [0002] In the catenary, in order to limit or reduce the impact range of accidents such as catenary disconnection and pole down; reduce the negative sequence current caused by single-phase traction load in the power system, and reduce the negative sequence of the electrified railway traction power supply system to the power system At the same time, in order to facilitate the erection and construction of the catenary, the electrified railway power supply system adopts the method of segmental current taking and phase commutation connection. The mechanical segment of the catenary is called the anchor segment, and the connecting area (overlapping part) of two adjacent anchor segments is called the anch...

AI Technical Summary

Problems solved by technology

The overvoltage generated by the electric locomotive passing through the articulated electric split phase will not only directly cause burns and disconnection of the catenary, interrupt power supply and transportation; but also frequently cause discharge in the roof protection gap, resulting in tripping of the traction substation; a direct threat to the catenary and traction substation. Safe operation of power station

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