基于光纤传感技术的输电线路在线监测技术

Online Monitoring Technology of Transmission Line Based on Optical Fiber Sensing Technology

光纤传感技术具有体积小、抗电磁干扰能力强、可多路复用等优势,将其用于输电线路的在线监测已经成为了电网发展的必然趋势。阐述了输电线路的故障类型,并论述了几种在输电线路在线监测中经常使用的光纤传感技术,包括分布式光纤传感技术、光纤光栅传感技术和智能化光纤传感技术,以实现合理化的封装方案、光纤类型、解调系统以及布置方案的选择。

Optical fiber sensing technology has the advantages of small size, strong anti-electromagnetic interference ability, multiplexing and so on. It has become an inevitable trend for the development of power grid to use it for the online monitoring of transmission lines. This paper expounds the transmission line fault types, and discusses the several types of optical fiber sensing technology frequently used in transmission line on-line monitoring, including the distributed optical fiber sensing technology, fiber grating sensing technology, intelligent optical fiber sensing technology, in order to realize the reasonable selection of packaging scheme, fiber type, demodulation system and layout scheme.