The application of hyperspectral camera in capturing and detecting high-voltage line joints

In the field of power engineering, the condition monitoring of high voltage line joint is always an important link to ensure the safe and stable operation of power system. Overshoot phenomenon is a potential risk in the operation of high-voltage line joints, which can lead to the increase of temperature, resistance, and even fire. Therefore, accurate and timely detection of the phenomenon of loss of power is of great significance to prevent the occurrence of power accidents. This study will focus on the technical principle, application method and practical effect of hyperspectral camera in photographing the high-voltage line joint with a view to providing useful reference for the development of the electric power industry.

一、the characteristics of hyperspectral cameras

High resolution: Hyperspectral cameras are capable of capturing high-resolution images, which helps to accurately identify detailed features of high-voltage line joints in complex environments.

Spectral analysis capability: The hyperspectral camera can obtain the spectral information of the target object, which is of great significance for analyzing the material composition and temperature distribution of the high-voltage wire joint.

二、the principle of loss of detection

The lapse detection usually involves the monitoring of the temperature, resistance and other parameters of the high voltage line joint. When the joint is out of phase (i.e. loss of superconducting state), its temperature will increase and its resistance will increase. By analyzing the spectral information of the joint, the hyperspectral camera can indirectly deduce the change of its temperature and resistance, so as to realize the lapse detection.

三、the application of hyperspectral camera in lapse detection

Image acquisition: The hyperspectral camera is used to photograph the high-voltage wire joint and obtain the spectral image of the joint.
Data processing: The collected spectral images are processed and analyzed, and key parameters such as temperature and resistance of the joint are extracted.

Failure judgment: According to the extracted parameters, combined with the preset threshold value or model, judge whether the joint has a failure phenomenon.

四、Precautions and limitations

Environmental factors: Environmental factors such as light, temperature, etc., may affect the shooting effect of hyperspectral cameras. Therefore, it is necessary to pay attention to the control and correction of environmental factors in the shooting process.Data processing capability: The amount of data captured by hyperspectral cameras is large, and strong data processing capability is required. Therefore, it is necessary to configure the corresponding data processing equipment and algorithm in the application process.

五、 Application examples and effects

In practical applications, hyperspectral cameras have been used to monitor the joint status of high voltage transmission lines. By taking the spectral image of the joint regularly and analyzing and processing, the abnormal situation of the joint can be found in time, such as abnormal temperature rise, resistance increase, etc., so as to avoid the occurrence of the fault. In addition, the hyperspectral camera can also provide information such as the material composition and aging degree of the joint, which provides a scientific basis for the maintenance and replacement of the joint.Instrument: Color spectrum built-in push sweep FS-23 convenient high spectrometer.

Auxiliary equipment: constant spectral light source - transmission device

Light source: linear halogen light source

In summary, the hyperspectral camera has certain application potential and advantages in the detection of high voltage line joints. However, in practical applications, it is also necessary to pay attention to the limitations and challenges in terms of environmental factors, data processing capabilities and cost issues. With the continuous progress of technology and the reduction of cost, the application prospect of hyperspectral camera in the field of power inspection and monitoring will be broader.