Automatic switching controlling device of two neutral sections for electrified neutral section passing of locomotive

Abstract

The invention discloses an automatic switching controlling device of neutral sections. By means of the automatic switching controlling device, the neutral section passing problem of two types of electrified railway locomotives is completely solved by overhead line systems themselves, and locomotive electrified neutral section passing is irrelevant to drivers and driving. The automatic switching controlling device is composed of an online phase separation section, current mutual conduction signal collectors (21, 22 and 23) or voltage mutual conduction signal collectors (24 and 25) and a switching control compartment. Overhead line system sections at different positions are connected in a lap joint mode and skid off through head bows and tail bows, current or voltage control signals which are supplied in a delayed and switched mode and reset are sequentially collected, the working states of normally open switches (31 and 32) and a normally closed switch (33) are controlled by a control system (35) through programs, a current limiter (34) is regularly connected into and retreats from a traction power supply circuit, and the monitoring of the delayed supply process, the load breakage process, the switched supply process, the current limiting process, and the reset process and the running state is automatically achieved through the cooperation of pantograph envelope sections (L1, L2, L3 and L4) and delayed supply process sections (L5 and L6), wherein the lengths of the pantograph envelope sections and the lengths of the delayed supply process sections meet the neutral section passing functional requirements.

Description

technical field [0001] The invention relates to an automatic electric phase separation device for electrified railway locomotives, especially two kinds of electric phase separation problems that can be completely solved by the catenary for the self-switching control of the locomotive excessive phase separation problem caused by the catenary segmented phase separation power supply mode device. Background technique [0002] At present, there are existing over-phase separation technologies at home and abroad. According to the position of the switch, they can be roughly divided into three types: online type, on-board type and ground type. model. Representative prior art is summarized as follows. [0003] "Electrified Railway" No. 6, 2006 "Automatic vacuum switch phase separation device and improvement suggestions", the applicant introduced the details of the online "automatic vacuum switch phase separation device" of Swiss AF Company, which can be used for pantograph shuttles ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: unscientific load breaking principle, current control ringing phenomenon; there is a 7.3m power supply dead zone, only single bow current is allowed, potential artificial short-circuit factors between phases, poor safety and reliability; no current measures, resulting in automatic over-phase failure ; The hard points on the network are too serious, and the electromechanical stability between pantograph and catenary is poor, so it is not suitable for quasi-high-speed and high-speed sections

The common disadvantages of both are: the overall structural form of the equipment integration of multiple departments must cooperate and coordinate with each other to ensure its reliability, which is not conducive to systematic maintenance and management, and it is difficult to guarantee safety and reliability; only It is suitable for special single-machine or multi-machine traction, which limits the scope of application: there is a power supply dead zone, and the length of the locomotive power failure is related to the length of the power supply dead zone and the speed of the vehicle. The strength of the control signal is related to the vehicle speed and the magnetic field strength of the ground sensor. If it is lower than the lower limit, the automatic over-phase separation will fail, and the driver needs to operate manually, which has poor reliability

The common feature of the two is that the overall structural form of the equipment integration of multiple departments must cooperate and coordinate with each other to ensure its reliability, which is not conducive to systematic maintenance and management, and it is difficult to guarantee safety and reliability: only It is suitable for traction by special locomotives, which limits the scope of application; the signal acquisition position is not the actual position of the first and last bows of the flow, and the signal position is inaccurate; switching control and other equipment occupy space in the facility, which is easily restricted by environmental conditions, expensive, short service life, and high operating efficiency The ratio is high, and it is difficult for users to accept

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