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Extra-long station spacing emergency communication method of electric power optical transmission network

An optical transmission network and emergency communication technology, which is applied in the field of power system communication, can solve the problems of rapid recovery system communication difficulties, time-consuming and labor-intensive maintenance of relay stations, etc., and achieve the effects of easy mobile and rapid deployment, convenient portability, and small size

Inactive Publication Date: 2011-02-23
STATE GRID ANHUI ELECTRIC POWER +1
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AI Technical Summary

Problems solved by technology

[0004] For traditional optical transmission systems that do not use any optical amplification equipment, only pure optical interface transmission schemes are used to achieve long-distance transmission. A relay station must be set up after each transmission distance. Once a failure occurs, the maintenance of the relay station is A time-consuming and labor-intensive task that creates great difficulties in quickly restoring system communications

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  • Extra-long station spacing emergency communication method of electric power optical transmission network
  • Extra-long station spacing emergency communication method of electric power optical transmission network
  • Extra-long station spacing emergency communication method of electric power optical transmission network

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Embodiment Construction

[0012] The present invention will be described in further detail below with reference to the accompanying drawings.

[0013] in such as figure 1 In the shown embodiment, it is a schematic diagram of emergency communication transmission constructed for the 2.5G system. The characteristic circuit composition of the ultra-long station distance power emergency communication system of the present invention includes: power amplifier EDFA-BA, preamplifier EDFA-PA, forward error correction coding equipment FEC, dispersion compensation equipment DCM, and Raman amplifier FRA.

[0014] With the maturity of optical fiber manufacturing technology, the attenuation coefficient of optical fiber can reach 0.21 dB / km. Due to the existence of loss, the amplitude of the optical signal transmitted in the optical fiber, whether it is an analog signal or a digital pulse, will decrease. The loss of optical fiber determines the transmission distance of the system to a large extent. For 2.5G optical...

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Abstract

The invention discloses an extra-long station spacing emergency communication method. In the method, optical amplification devices are arranged at two line interruption ends; and a new optical transmission channel is established in the middle of a line by using an optical cable, and comprises a forward error correction (FEC) coding device, a power amplifier EDFA-BA, a Raman amplifier FRA, a preliminary amplifier EDFA-PA and dispersion compensation equipment DCM which are configured in turn, wherein the power amplifier EDFA-BA is connected with the Raman amplifier FRA by using a G.652 optical cable. The extra-long station spacing emergency communication method can reduce the use of relay equipment, solve the problems of optical fiber line interruption, relay station damage or maintenance, optical fiber ageing and the like of an electric power system; and by configuring different optical amplification schemes, a new transmission channel can be quickly established by using redundant or backup optical fibers, thereby fulfilling the aim of emergency communication.

Description

technical field [0001] The invention relates to an emergency communication using a super-long station distance method to realize power optical transmission, and belongs to the technical field of power system communication. Background technique [0002] Power emergency communication is an important support for the power system to deal with various emergencies and ensure the safe production of the power grid, and it plays an important role at critical moments. [0003] At present, electric power communication has formed a communication transmission network based on SDH optical fiber communication ring network, and the security and reliability of the network have been greatly improved. However, there are still single-point communication failures at substation communication sites that cause all communication services at this point to be interrupted. However, the power system has not yet established a complete emergency communication system, and cannot quickly restore various se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/74H04B10/12H04B10/038H04B10/291
Inventor 胡丹田文峰孔明赵高峰郭云飞王伟
Owner STATE GRID ANHUI ELECTRIC POWER
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