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Intelligent substation optical fiber link testing method and device

A technology of intelligent substation and optical fiber link, applied in circuit devices, electrical components, electromagnetic wave transmission systems, etc., can solve the problems of low test efficiency and low precision, and achieve the effect of shortening the test period, fast response speed, and improving test efficiency.

Pending Publication Date: 2020-06-19
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problems of low test efficiency and low precision in the prior art for testing the optical fiber interface and channel performance indicators of smart substations

Method used

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  • Intelligent substation optical fiber link testing method and device

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Embodiment 1

[0049] This embodiment provides a method for testing an optical fiber link in a smart substation, including:

[0050] Step 1, analyze the SCD file of the smart substation to obtain the virtual and real link mapping relationship of the optical fiber link of the device under test;

[0051]Step 2, receiving the optical signal containing the GOOSE message or the SV message sent by the optical port of the device under test through the optical fiber, and analyzing and testing the optical signal to obtain the transmission optical power of the optical port of the device under test;

[0052] Step 3: Send an optical signal containing a GOOSE message or an SV message to the optical port of the device under test through an optical fiber, and gradually adjust the optical power attenuation value of the optical port under test through the dichotomy method. , the measured optical power received by the tested optical port of the device under test is the light receiving sensitivity of the devic...

Embodiment 2

[0066] This embodiment provides a smart substation optical fiber link test device, the test device is connected to the measured optical port of the device under test through an optical fiber, and is used for the transmission of optical signals; the test device is connected to the network port of the device under test through a network cable Connect, be used for the transmission of station control layer MMS message; Described test device comprises:

[0067] The SCD file analysis module is used to analyze the SCD file of the smart substation, and obtain the virtual and real link mapping relationship of the optical fiber link of the device under test;

[0068] The optical power test module is used to receive the optical signal containing the GOOSE message or SV message sent by the optical port of the device under test through the optical fiber, and analyze and test the optical signal to obtain the transmission of the optical port of the device under test. Optical power;

[0069]...

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Abstract

The invention relates to an intelligent substation optical fiber link testing method and device, and the method comprises the steps: enabling a to-be-tested device to be connected with a testing device through an optical fiber and a network cable, carrying out the quick analysis of an SCD file after the SCD file is obtained, automatically matching a virtual loop, and correlating the states of an optical fiber link. And then, the optical port sending power and the receiving sensitivity can be automatically tested. An optical power testing module comprising a logarithmic ratio amplifier is adopted for optical power testing, a sensitivity testing module for controlling optical attenuation through the MEMS technology is adopted for optical receiving sensitivity testing, high testing precisioncan be guaranteed, and errors are reduced. And the device can test eight paths of optical ports at the same time, the test efficiency is greatly improved, the test precision is improved, the test period of a debugging stage is shortened, and the manpower and material resource cost is saved.

Description

technical field [0001] This application belongs to the technical field of optical fiber communication, and specifically relates to a method and device for testing optical fiber links in smart substations Background technique [0002] With the rapid development of smart substations, optical fiber communication has become the most important transmission channel for protection systems in smart substations. The country and enterprises have formulated a considerable number of standards, and put forward specific test requirements for the performance indicators (optical transceiver power, receiving sensitivity, etc.) of optical fiber interfaces and channels in smart substations. However, there are a large number of optical fibers in a smart substation. For example, there are about 600 optical fibers in a typical 220kV substation. To complete the test of so many optical fiber ports will become a heavy task in the debugging and acceptance stage. [0003] The commonly used test metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/079H02J13/00
CPCH04B10/0795H02J13/00Y04S40/124Y02B90/20
Inventor 韩伟李琼林张峰刘尧宋闯刘超刘磊乔利红蔡得雨党一奇段文岩王亚林
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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