可扩展式高压输电线路光纤点式传感网络技术研究

Study on Scalable Fibre-optical Point Sensor Network Technology of High-voltage Transmission Lines

针对高压输电线路运行状态监控采用有源电信号传感器存在的问题,以高压输电线路准分布式全光监测网络的设计和架构为例,基于FBG光纤传感、波分复用光纤信号传输和光纤网络拓扑技术,架构了新一代可扩展式无源输电线路全光监测网络,实现了单根光纤通道监测一条输电线路上多基杆塔的导线温度、金具温度、导线微风振动、绝缘子状态、杆塔倾斜等状态量。对比传统光学检测技术,并通过现场挂网式运行结果表明,该技术可实现多基杆塔状态监测,可满足电力系统安全稳定运行需求。

In this paper, the design and architecture of high-voltage transmission lines quasi-distributed optical moni- toring network is researched. Based on the FBG fibre-optical sensing, wavelength division multiplexing optical signal transmission and fibre-optical network topology technology, a new generation scalable optical passive monitoring network of transmission line is designed by using a single fiber channel in optical fiber composite overhead ground wire （OPGW）, which can monitor conductor temperature, overhead power line fitting temperature, aeolian vibration, insulator status, tower inclination and so on. Compared with the traditional optical monitoring techniques, long-time tentative operation results show that the new technology enables multiple towers monitoring by optical sensing network, and can meet the safe and stable operation demand of power system.