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A detection method for optical fiber longitudinal protection channel

A technology of longitudinal protection and detection method, which is applied in the direction of digital transmission system, forward error control, error prevention, etc. It can solve the problems of unable to detect the intersection of master and slave channels, and achieve good detection completeness, good compatibility, and ensure consistent effect

Active Publication Date: 2019-10-25
积成软件有限公司
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AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a detection method for the optical fiber longitudinal protection channel, which can solve the problem that the existing solutions cannot detect the crossing of the master-slave channel, and eliminate the operation risk that may be caused by manual confirmation of the program version

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  • A detection method for optical fiber longitudinal protection channel
  • A detection method for optical fiber longitudinal protection channel
  • A detection method for optical fiber longitudinal protection channel

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Embodiment Construction

[0027] Such as Figure 4 As shown, a detection method for an optical fiber longitudinal protection channel includes the following steps:

[0028] (1) The sender and the receiver correspond to the protection devices on both sides respectively, and the protection device on this side uses the CRC-16 algorithm to perform summation verification on the device application program to generate 16-bit program verification information;

[0029] (2) Generate a 16-bit identification code representing the local channel according to the fixed value of the local channel identification code in the protection device;

[0030] (3) According to the channel type, combined with the program verification information and the local channel identification code, a unique 32-bit channel information word is generated;

[0031] (4) Send the information word and detect the light emitting power, and the light emitting power is displayed under the device monitoring menu in real time;

[0032] (5) The protect...

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Abstract

The invention discloses a method for detecting optical fiber longitudinal protection channels, and a sender and a receiver cooperate to accomplish, and detect the optical fiber longitudinal protection channels in physical layer, data link layer and application layer. The method provided by the invention has relatively good detection completeness, considers various channel faults in a classified manner, and compatibility with existing design specifications is good; the whole scheme realizes unique identifiers of channels on the premise of not increasing a user fixed value, and solves the problem that an existing scheme cannot distinguish main and slave channels; the detection scheme can automatically complete verification of two side protection device program versions, ensure consistency of the two side program version, and eliminate operational risks existing in manual proofreading of versions; and the information coding efficiency is high, one information word contains information of channel identifiers and program versions, only a transmission quantity of two bytes are increased, and influence on protection programs is extremely small.

Description

technical field [0001] The invention relates to the field of relay protection detection, in particular to a detection method for an optical fiber longitudinal protection channel. Background technique [0002] On high-voltage and ultra-high-voltage transmission lines, optical fiber longitudinal protection with dual configuration is widely used. Optical fiber longitudinal protection uses the fiber optic channel to exchange the protection information on both sides of the line, and judges the type of fault (internal fault, external fault) by comparing the characteristic quantities of the information on both sides, so as to decide whether to cut off the protected line. As the carrier of protection information, the optical fiber longitudinal protection channel plays a huge role in the whole set of protection. The quality of the optical fiber channel directly affects the action behavior of the protection device. Common abnormalities of the optical fiber longitudinal protection cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/079H04B10/032H04L1/00
CPCH04B10/032H04B10/0793H04B10/07953H04L1/004H04L1/0061H04L1/0083
Inventor 朱建红陈亮石文国饶剑波李明
Owner 积成软件有限公司
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