Transmission conductor spacer damage monitoring system based on fiber grating sensing

Abstract

The invention discloses a transmission conductor spacer damage monitoring system based on fiber bragg grating sensing. A plurality of fiber bragg grating strain sensors and fiber bragg grating temperature sensors are mounted on a spacer to monitor the connection state of a support arm and a frame, and a fiber bragg grating demodulation module measures the central wavelength of a fiber bragg grating and calculates the strain; and a data analysis module judges whether the support arm and the frame body are loosened or not through the strain increment and transmits damage and strain information to a remote terminal. The fiber bragg grating sensor is adopted, measured signals are not interfered by an electromagnetic field of a transmission conductor, the signal transmission distance is long, lightning protection is achieved, and the defect that routing inspection is time-consuming and labor-consuming is effectively overcome.

Description

technical field [0001] The invention belongs to the field of smart grid monitoring, and in particular relates to a damage monitoring system for spacer rods of power transmission wires based on optical fiber grating sensing. Background technique [0002] The spacer bar in the transmission line is the supporting device between the transmission wires, and it is a reliable reference for obtaining state parameters such as wire sag and galloping. Due to climatic factors such as freezing rain, snowfall and strong winds, transmission lines will face the danger of conductor galloping, which will easily cause fatigue damage to spacers, and then lead to phase-to-phase short circuit of conductors, seriously endangering the safe operation of the power grid. Therefore, it is of great significance to realize the on-line monitoring of transmission line spacers. [0003] The spacer rod moves with the wire, and its support arm is in a vibrating state. The support arm and frame of the spacer ...

AI Technical Summary

Problems solved by technology

[0003] The spacer rod moves with the wire, and its support arm is in a vibrating state. The support arm and frame of the spacer rod are easy to loosen, and sliding gaps are prone to appear between components, resulting in wear and tear failure

At present, the monitoring of spacers mainly focuses on video positioning and inspection of the working status of spacers through manual inspection or unmanned aerial vehicles. The inspection is not only long in detection cycle but also labor-intensive. For online damage or Force monitoring lacks effective monitoring methods

Images