An online temperature monitoring system and monitoring method for optical fiber composite phase line

Abstract

The invention relates to an online temperature monitoring system and a monitoring method for an optical fiber composition phase conductor (OPPC). The monitoring system comprises an OPPC optical cable (1), an optical unit (2), an optical cable connector box (3), an imported optical cable (4), a temperature measurement host (5) and a monitoring computer (6). The OPPC optical cable (1), the optical unit (2), the optical cable connector box (3), the imported optical cable (4) and the temperature measurement host (5) are connected in sequence. The monitoring computer (6) is connected with the temperature measurement host (5). The technical scheme of the online temperature monitoring system and the monitoring method for the OPPC is used to carry out real-time partition monitoring for temperature of an operating OPPC cable and provides accurate temperature data for applications of fault early warning of transmission lines, dynamic capacity increasing, and the like.

Description

technical field [0001] The invention relates to a monitoring system and a monitoring method thereof, in particular to an online temperature monitoring system and a monitoring method thereof for optical fiber composite phase lines. Background technique [0002] The high-voltage cable has a large load and a high calorific value, and its surface temperature can truly reflect the actual operation of the cable, such as overload operation, cable insulation failure, etc. On-line real-time monitoring of line operation based on temperature information is an important means to achieve daily cable repair and maintenance, cable fault early warning and diagnosis, line accident investigation and emergency response. At the same time, through the cable temperature, combined with the sensor data of sunshine, ambient temperature and wind force, the maximum allowable current carrying capacity of the cable can be accurately analyzed and calculated, providing scientific data basis for reasonable...

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Problems solved by technology

[0005] Related Chinese patent ZL200920289025.2 is a stress and strain measurement device applied to optical fiber composite phase line OPPC, which is composed of distributed optical fiber system BOTDR based on Brillouin scattering, monitoring computer, conductive optical fiber and its splice box, and optical fiber composite phase line OPPC , can complete the monitoring of OPPC stress and strain abnormal points; the related Chinese patent ZL200910175452 distributed optical fiber temperature measurement system, the invention includes a single-chip microcomputer control board, an optical fiber temperature field information acquisition module, a photoelectric detector and a circuit signal post-processing module, which can complete temperature measurement Optical cable temperature monitoring, OPPC temperature monitoring cannot be realized

Chinese patent ZL201110007053.2 cable ampacity monitoring method and system based on distributed optical fiber temperature measurement method, the temperature measurement optical fiber directly contacts the surface of the cable, and the measurement method used cannot be used for OPPC temperature monitoring

US patent US7412117 (PCT / GB2004 / 004383) Apparatus and method for distributed temperature sensing does not consider the complex heat conduction characteristics of OPPC lines, and does not consider the special performance of multi-point connection of overhead optical cables

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