Electric locomotive auxiliary engine protection device

A technology for protection devices and electric locomotives, which is applied to emergency protection circuit devices, overcurrent-responsive protection, electrical components, etc., can solve problems such as difficult maintenance, complicated wiring, and low reliability of protection devices, and achieve reduction Effects of mutual interference, simplified wiring, and improved protection strategies

CN103825248AActive Publication Date: 2014-05-28ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-05-28

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Abstract

The invention discloses an electric locomotive auxiliary engine protection device which comprises a plurality of current collecting modules, a plurality of auxiliary machine protection modules, a central control module and a plurality of circuit switch units. The current collecting modules are connected with corresponding auxiliary engines to collect the current data of the auxiliary engines. The auxiliary engine protection modules are correspondingly connected with the current collecting modules respectively to compute corresponding electric parameters based on the current data, the central control module analyzes the electric parameters and outputs corresponding control signals, and the auxiliary engine protection modules generate corresponding power source power-on and power-off signals according to the control signals. The circuit switch units are connected in power source circuits of the corresponding auxiliary engines to achieve overcurrent protection on the auxiliary engines. A centralized control strategy is adopted in the device, internal wiring is simplified, mutual interference between components is reduced, the function of degraded running is achieved, the data can be monitored in real time, stored and called, and a user can analyze and maintain the states of the auxiliary engines conveniently.
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Description

technical field

[0001] The invention relates to the technical field of electric power electronics, in particular to a protection device for an auxiliary machine of an electric locomotive. Background technique

[0002] With the rapid development of the national economy, the transportation tasks undertaken by the railway continue to grow. However, for some existing lines, especially the sections with long slopes (such as the section with a slope of 13‰ on the Nankun Line), due to the small capacity of the power supply network at the time of design, with the continuous increase of traction load, most of them are currently in the overloaded state.

[0003] When the power supply network is in an overload operation state, the voltage of the power supply network will be at a low level, and the network voltage at the end of the phase-splitting area will even drop below 19kV, which is lower than the lower limit of the working network voltage of the electric locomotive, resulting in ...

Examples

Embodiment Construction

[0036] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0037] Aiming at the problems of the existing electric locomotive auxiliary machine protection device, the present invention provides a new type electric locomotive auxiliary machine protection device, its structure diagram is as follows figure 2 shown.

[0038] Such as figure 2 As shown, the electric locomotive auxiliary protection device provided by the present invention includes several current acquisi...