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A 25kv pantograph control circuit

A technology for controlling circuits and pantographs, applied in the field of 25KV pantograph control circuits, which can solve the problems of inoperable isolated pantographs and inability to control high-voltage isolating switches, etc.

Active Publication Date: 2017-02-22
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each pantograph power supply circuit is equipped with a high-voltage isolating switch to isolate unused pantographs. The action of controlling the high-voltage isolating switch can only be operated on the corresponding interface of the network system display (remote control). If the network system fails, it will not be able to Controls the high voltage isolating switch, which cannot be operated when it is necessary to isolate the pantograph

Method used

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  • A 25kv pantograph control circuit

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0022] Such as figure 1 As shown, it is a schematic diagram of a 25KV pantograph control circuit provided by the embodiment of the present invention, which is used to control two sets of pantographs of the same train. The control circuit includes two sets of sub-control circuits, and each set of sub-control circuits The circuit is used to control the lifting and lowering of a group of pantographs; among them,

[0023] Each group of sub-control circuits includes a bow-up valve PUV, a bow-up relay KAPU, an interlock relay KAPI, a bow-down relay KAPDW1, a high-isolation pull-in solenoid valve PDCV, and a high-voltage isolation relay PDCS; The valve PUV is us...

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Abstract

A novel 25KV pantograph control circuit, comprising two groups of sub-control circuits, each group of the sub-control circuits being used for controlling the uprising and descending of a group of pantographs, wherein each group of sub-control circuits comprises a pantograph uprising valve (PUV), a pantograph uprising relay (KAPU), an interlock relay (KAPI),a pantograph descending relay (KAPDW1), a high-voltage isolation attracting electromagnetic valve (PDCV) and a high-voltage isolation relay. When an instruction is input at a pantograph descending instruction input end, the third group of normally closed contacts of the KAPDW1 are disconnected, and thus, the PDCV loses power, so that coils of the high-voltage isolation relay lose power; and the normally open contacts thereof which are connected between the PUV and the KAPU are disconnected, and thus, the PUV loses power, and the corresponding pantograph finally descends. In the present invention, a corresponding pantograph automatically descends as long as an instruction is input at the pantograph descending instruction input end.

Description

technical field [0001] The invention relates to the technical field of train control, in particular to a 25KV pantograph control circuit. Background technique [0002] At present, the trains powered by 25KV are generally equipped with two pantographs per train (fixed formation), and only one pantograph is used during operation, and the other is used as a backup. Each pantograph power supply circuit is equipped with a high-voltage isolating switch to isolate unused pantographs. The action of controlling the high-voltage isolating switch can only be operated on the corresponding interface of the network system display (remote control). If the network system fails, it will not be able to Controls the high voltage isolating switch, which cannot be operated when it is necessary to isolate the pantograph. Contents of the invention [0003] The purpose of the present invention is to design a 25KV pantograph control circuit, which can automatically isolate the pantograph after it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L5/28
CPCB60L5/28B60L5/24
Inventor 徐强焦京海张会青田庆史小利梁建英宋德刚王军
Owner CRRC QINGDAO SIFANG CO LTD
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