Optical cable state monitoring system

Abstract

The invention relates to an optical cable state monitoring system, which comprises a data center and a plurality of optical cable state monitoring subnet systems, and is characterized in that the datacenter comprises an online monitoring platform and a GIS display platform; each optical cable monitoring subnet system comprises a transformer substation machine room module and a power transmissionline module; each transformer substation machine room module comprises a distributed optical fiber sensor, a demodulator, a data processing PC and a router; each power transmission line module comprises a point type fiber Bragg grating (FBG) sensor; and the optical cable state monitoring subnet systems are used for controlling the sensors and collecting, processing and analyzing detection data ofthe sensors. The GIS platform displays position information of optical cables, stations, towers and the like in a geographic information graph mode. The fault point position on a current optical cablecan be accurately reflected in real time according to the longitude and latitude of the fault point, and the operation early warning information of the optical cable is displayed in time.

Description

technical field [0001] The invention relates to an optical cable state monitoring system, in particular to an optical fiber cable state comprehensive on-line monitoring system based on optical fiber sensing and GIS technology, belonging to the technical field of optical fiber sensing state monitoring systems. Background technique [0002] With the ever-increasing pressure on global resources and the environment, the deepening of the power marketization process, and the continuous improvement of users' requirements for power reliability and quality, building a safer, more reliable, environmentally friendly and economical power system has become a common goal of the global power industry. . my country has a vast territory, and the power communication optical cable network is extensive. The State Grid Corporation's communication optical cables have reached 1,295,300 kilometers, of which 22 UHV optical cables have a length of 402,640 kilometers. The State Grid Corporation of Ch...

AI Technical Summary

Problems solved by technology

Optical cable operation and maintenance lines are long, and operation and maintenance are more difficult. According to the calculation of 50% coverage of 500kV cross-regional transmission lines and large-span pole tower status monitoring, the lines to be monitored will also be 200,000 kilometers. From the development of line inspection to the popularization of electronic monitoring systems today, although the optical cable status monitoring technology has made great progress, it still faces severe challenges

At present, the optical cable status online monitoring system is mainly composed of various electronic sensors. Therefore, when building the monitoring system, it is necessary to install an additional power supply and lay power pipelines. Although this can ensure a stable power supply, it undoubtedly limits the monitoring system. use environment

These traditional electronic sensors are all active devices, which are extremely susceptible to interference in the complex electromagnetic environment of high-voltage transmission lines, making it difficult to guarantee the remote transmission and data accuracy of monitoring data

Therefore, the current electronic optical cable status monitoring system is difficult to meet the real-time monitoring requirements for the status of field transmission lines in harsh geographical conditions and climatic environments, and there are a series of problems such as low reliability, complicated installation, difficult maintenance, and high cost.