Power transmission line monitoring device and method based on fiber bragg grating

Abstract

The invention provides a fiber grating-based power transmission line monitoring device and method. The fiber grating-based power transmission line monitoring device comprises a wire clamp (3) and a wire temperature monitoring unit (10), the wire clamp (3) comprises a wire clamp cover plate (12); the wire temperature monitoring unit (10) is embedded in the inner side of the wire clamp cover plate (12) and is in contact with a measured wire (1); the wire temperature monitoring unit (10) is used for sensing the temperature change of the measured wire (1) and forming an optical signal; the optical transmitter is also used for transmitting the optical signal; the wire temperature monitoring unit is directly embedded on the wire clamp cover plate (12), the original form of a circuit component is not changed, the structure is simple and compact, and the wire (1) is not damaged; the fiber bragg grating sensing unit is used as a wire temperature monitoring unit to monitor the temperature of the wire (1), field power supply is not needed, and the problem of insufficient reliability of long-term operation power supply is avoided; the fiber bragg grating sensing unit is not affected by electromagnetic interference, can be installed on a line for a long time, and operates reliably.

Description

technical field [0001] The invention belongs to the field of power transmission line state monitoring, and in particular relates to a power transmission line monitoring device and method based on an optical fiber grating. Background technique [0002] The ambient temperature around the transmission tower and the temperature of the conductor are one of the important indicators for transmission line monitoring. The existing wire temperature monitoring sensors are mainly based on wireless contact electronic temperature measurement. They are installed at the end of the wire, and a special clamping structure needs to be designed to closely cooperate with the wire. Stress concentration occurs, and improper installation will damage the wires; the power supply of this type of sensor is usually combined with battery and solar power, and the reliability of the power supply for long-term operation is insufficient; The device must be specially designed for anti-electromagnetic interfer...

AI Technical Summary

Problems solved by technology

The existing wire temperature monitoring sensors are mainly based on wireless contact electronic temperature measurement. They are installed at the end of the wire, and a special clamping structure needs to be designed to closely cooperate with the wire. Stress concentration occurs, and improper installation will damage the wires; the power supply of this type of sensor is usually combined with battery and solar power, and the reliability of the power supply for long-term operation is insufficient; The device must be specially designed for anti-electromagnetic interference, which is difficult to design

Nevertheless, the reliability of data transmission is still seriously challenged

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