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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。
Aiming at the problems existing in using active electrical signal sensors for monitoring the operation status of high voltage transmission lines, taking the design and architecture of the quasi-distributed optical monitoring network for high voltage transmission lines as an example, based on FBG optical fiber sensing, WDM optical signal transmission and optical fiber Network topology technology, a new generation of all-optical monitoring network of scalable passive transmission lines is constructed. The single-fiber channel is used to monitor the temperature of the multi-base tower on a transmission line, the temperature of the tooling, the breeze vibration of the wire, the state of the insulator, Other state quantities. Compared with the traditional optical inspection technology, the results of on-site grid-connected operation show that the technology can realize the condition monitoring of multi-base tower and can meet the requirements of safe and stable operation of power system.