A power failure control circuit and method for an electromagnetic operating mechanism switch

A technology of switch control loop and electromagnetic operation, which is applied in the direction of electric switch, power device and circuit inside the switch, and can solve the problems of high start-up time, unreliability and strong dependence of the device

Active Publication Date: 2018-10-16
SHANDONG LUNENG SOFTWARE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high requirements for device start-up time, is highly dependent on the device itself, and is not reliable enough

Method used

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  • A power failure control circuit and method for an electromagnetic operating mechanism switch
  • A power failure control circuit and method for an electromagnetic operating mechanism switch

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] A power failure control circuit and method for an electromagnetic operating mechanism switch. Using a magnetic latching relay to control the switch of the electromagnetic mechanism can realize that after the system is powered off and restarted, the switch of the external electromagnetic operating mechanism can still be kept in the off state during the start-up process of the feeder terminal, even when the feeder terminal device fails to start. The feeder terminal handle switch has multiple pairs of contacts, one pair of contacts is selected to be directly connected in series to the switch control circuit of the electromagnetic operating mechanism, and the rest of the contacts are used for remote signal transmission of the handle position. When there is a fault and the switch of the electromagnetic operating mechanism needs to be disconnected, set...

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Abstract

The invention discloses a power failure control circuit for an electromagnetic operating mechanism switch and a control method. According to the invention, a processing unit performs control on an electromagnetic operating mechanism switch control circuit through a magnetic latching relay, the electromagnetic operating mechanism switch control circuit comprises a feeder terminal multi-contact switch, one pair of contacts of the multi-contact switch is directly connected to the electromagnetic operating mechanism switch control circuit in series, the rest of the contacts are used for remote signal uploading, the processing unit sets the feeder terminal multi-contact switch to be open when a fault exits and the electromagnetic operating mechanism switch needs to be switched off, the electromagnetic operating mechanism switch control circuit is directly cut off through a mode of disconnecting contacts of the multi-contact switch, and an off-state of the electromagnetic operating mechanism switch is ensured. According to the invention, the electromagnetic operating mechanism switch is ensured to stay at a reliable off-state at the beginning of power recovery when a power failure fault exists without a need of excessively depending on the start rapidity and reliability of a feeder terminal device.

Description

technical field [0001] The invention relates to a power failure control circuit and method of an electromagnetic operating mechanism switch. Background technique [0002] In the power system, for the electromagnetic mechanism switch, when there is a power failure, at the beginning of the power recovery, when the feeder distribution terminal is started, it is sometimes necessary to ensure that the switch is in the off state. Generally, the device is fully activated, and then the switch is operated through logical judgment according to the remote signal position. This method has high requirements on the start-up time of the device, is highly dependent on the device itself, and is not reliable enough. Contents of the invention [0003] In order to solve the above problems, the present invention proposes a power failure control circuit and method for the switch of the electromagnetic operating mechanism. The present invention uses a magnetic latching relay to control the swit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/28H01H9/54
CPCH01H3/28H01H9/54
Inventor 代后兆李伟硕刘晓璞刘强叶泽亮李长庆傅孟潮王秉钧
Owner SHANDONG LUNENG SOFTWARE TECH
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