Automatic switching device and method for optical fiber link of automatic switch of power system distribution network

Abstract

The invention relates to an automatic switching device and method for an optical fiber link of an automatic switch of a power system distribution network. The device comprises a first optical switch and a second optical switch on receiving and transmitting pigtails of FTU, TTU and DTU site switches, the first optical switch is connected with a first switch, the second optical switch is connected with a third switch, and the second switch is arranged between the first optical switch and the second optical switch. According to the invention, the problems of manually going to the site for temporary fiber jumping and connecting optical fiber links of upper and lower stations are solved, operation and maintenance personnel do not need to go to the site for disconnecting the temporary fiber jumping, an automatic optical fiber link switching function of the distribution network automatic switch is realized, and the problem of endangering three-remote signal interruption of a plurality of FTUs, TTUs and DTUs is effectively prevented.

Description

technical field [0001] The invention relates to an automatic switching device, in particular to an automatic switching device for an optical fiber link of a power system distribution network automation switch, and also relates to an automatic switching method. Background technique [0002] At present, the distribution network automation communication network has developed rapidly after years of continuous construction. However, from the analysis of operation data, more than 90% of the faults come from the faults of the access layer industrial switches. When the distribution network automation network fails, on-site troubleshooting usually The fault caused by the power failure of the switch will be eliminated after the power supply is restored. If there is a device failure in the distribution network and there is no spare part, the only way to get rid of the faulty site is to use the repair personnel to jump the fiber on site to ensure the connection of the adjacent site at th...

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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention proposes an automatic switchover device and method for optical fiber links in power system distribution network automation switches. When the power supply of the switch site is powered off by using two sets of optical switches, there is no need to manually go to the site for temporary fiber jumping. The problem of automatically connecting the optical fiber links of the upper and lower sites; when the power of the switch is restored, the operation and maintenance personnel do not need to go to the site to disconnect the temporary fiber jumper work, fully realize the automatic switching function of the optical fiber link, and effectively prevent multiple FTUs, TTUs, and DTUs from being endangered The problem of the signal interruption of the three remote signals

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