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Circuit and method for automatic identification of distribution network terminal card remote signal voltage

A distribution network terminal, automatic identification technology, applied in the direction of measuring current/voltage, measuring electrical variables, instruments, etc., can solve problems affecting product production speed and on-site maintenance difficulty, and achieve the effect of saving production links and low cost

Inactive Publication Date: 2019-03-01
SHANDONG LUNENG SOFTWARE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Due to the continuous emergence of new specifications for distribution networks, the terminal products of power distribution and protection equipment have obvious requirements for multi-voltage compatibility of YX boards. In practical applications, they are all fixed voltage inputs. If the rated voltage is less than 55% according to the technical specifications, it is not reliable Action, the requirement of reliable action of more than 70% of the rated voltage requires changing the voltage of different boards and configuring different voltage dividing resistors and devices, which will result in the need to form multiple quality configuration management files and a variety of components with single BOM, greatly Affect product production speed and on-site maintenance difficulty

Method used

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  • Circuit and method for automatic identification of distribution network terminal card remote signal voltage
  • Circuit and method for automatic identification of distribution network terminal card remote signal voltage

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0028] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses a circuit and method for automatic identification of distribution network terminal card remote signal voltage. The method comprises: divides input voltage, to keep output sampling voltage in a set range; receiving sampling voltage, each time when powering on, determining and storing first remote signal voltage, performing remote signal filtering, comparing voltage threshold, judging fault logics and performing remote signal output; outputting an optocoupler signal corresponding to the remote signal output signal according to a fault judgment result, and ensuring the optocoupler signal to be isolated from the remote signal input signal. The method can realize wide-range adaptive YX voltage input, and prevents a problem of a plurality of production links.

Description

technical field [0001] The invention relates to a remote signaling voltage automatic identification circuit and method of a distribution network terminal board card. Background technique [0002] Due to the continuous emergence of new specifications for distribution networks, the terminal products of power distribution and protection equipment have obvious requirements for multi-voltage compatibility of YX boards. In practical applications, they are all fixed voltage inputs. If the rated voltage is less than 55% according to the technical specifications, it is not reliable Action, the requirement of reliable action of more than 70% of the rated voltage requires changing the voltage of different boards and configuring different voltage dividing resistors and devices, which will result in the need to form multiple quality configuration management files and a variety of components with single BOM, greatly Affect product production speed and on-site maintenance difficulty. Con...

Claims

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Application Information

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IPC IPC(8): G01R19/25
CPCG01R19/2503
Inventor 管荑孟祥军宋军王渝华周新杰代后兆刘晓璞王倩倩
Owner SHANDONG LUNENG SOFTWARE TECH
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