Self-check type auto-passing neutral section system and auto-passing neutral section method of electrified railway

Abstract

The invention relates to a self-check type auto-passing neutral section system and an auto-passing neutral section method of an electrified railway. The system comprises the following components: a contact net I is connected with a neutral section through an electric sub-section I, and a contact net II is connected with the neutral section through an electric sub-section II; the contact I is serially connected with a current transformer I close to the electric sub-section I, and a current transformer III is serially connected with a normally-opened switch I and then connected with the electric sub-section I in parallel; the contact net II is serially connected with a current transformer II close to the electric sub-section II, and a current transformer IV is serially connected with a normally-opened switch II and then connected with the electric sub-section II in parallel; and the current transformer I, the current transformer II, the current transformer III, the current transformer IV, the normally-opened switch I and the normally-opened switch II are all electrically connected with a measurement and control unit. The system is simple in structure, fewer in investment and convenient to implement, and auto-passing neutral section of the electrified railway can be realized more simply and conveniently.

Description

technical field [0001] The invention relates to an electrified railway self-inspection type automatic phase separation system and an automatic phase separation method thereof. Background technique [0002] my country's electrified railway generally adopts single-phase power frequency AC system. In order to make the three-phase load of the power system as balanced as possible, the electrified railway often adopts the scheme of alternating phase sequence and phase-separated partition power supply. The adjacent power supply intervals at the phase-separation partition are divided by air or insulators to form insulating electrical phase separation, referred to as electrical phase separation or phase separation. [0003] In order to prevent electric locomotives from burning catenary suspension components due to phase splitting and even causing accidents such as phase-to-phase short circuit, when the train passes through phase splitting, the driver needs to manually degrade, turn o...

AI Technical Summary

Problems solved by technology

However, there are some disadvantages: during the phase separation process of the train, the train loses power for a long time, and there is a power supply dead zone; due to the connection of the vacuum switch coil, when the train enters the electric phase separation, arcs and network voltage mutations will occur at the fracture , causing train pantograph slides and contactors to burn; a set of switches is redundant, causing unnecessary losses; it can only meet the excessive phase separation of trains below 100km / h, and is not suitable for high-speed railways

However, in this kind of over-phase separation scheme, the induction device that needs the ground position signal will cause mutual influence or even interference between the over-phase separation device and other ground devices, and it will also be artificially damaged, with serious consequences

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