In the daily UAV power inspection, refinement inspection and troubleshooting, infrared thermal imaging have become an indispensable and important method.

1. Thermal imaging technology in power drone inspection
With the peak of power consumption in summer, power grid equipment is also
facing increasing "baked inspection". In the daily UAV power inspection, refinement
inspection and troubleshooting, infrared thermal imaging has become an
indispensable and important method. So, what role can infrared thermal imaging
play in power inspection?
What is infrared thermal imaging technology?
In our daily life, in addition to the visible light sensors commonly used for
taking photos, there are a variety of sensing sensors used by humans to extend and
expand our sensing capabilities. Infrared sensors are one of them. Visible light
sensors capture visible light. Similarly, infrared sensors capture infrared light.
Every object in nature can radiate infrared as long as its temperature is above
absolute zero (-273.5 ° C). Infrared radiation is the most widespread type of
electromagnetic wave radiation in nature. It is called heat ray in modern physics.
Compared with traditional visible light cameras, which rely on natural or
ambient lighting for video surveillance, infrared sensors do not require light, and
can rely on infrared thermal energy radiated by the object to image clearly. Even in

2. completely dark environments, objects can be clearly visible .
Why does the power equipment need to detect the temperature?
The structure and materials of power equipment are usually greatly affected by
temperature. During normal operation, electrical equipment generates a certain
amount of heat. However, with the aging of power equipment or the increase of
resistance caused by rust at some contact points and poor contact, excessive
current, abnormal voltage, etc., the equipment will generate abnormal heat.
Therefore, detecting the temperature can well understand the operating status of
the power equipment, and help the operation and maintenance personnel to
detect defects in a timely manner.
The advantages of infrared thermal imaging in power inspection
1. Non-contact and safer. Infrared thermal imaging technology has the
characteristics of long distance, no contact, no sampling, and no contact with the
body. There is no need to touch directly when monitoring and inspecting power
equipment, which effectively avoids accidents. At the same time, since there is no
need to contact the object to be measured, the infrared thermal imager can
perform detection work when the power equipment is charged, reducing costs.

3. 2. Imaging is intuitive and easy to find abnormalities. Through accurate
temperature sensing, infrared thermal imaging can visually display the abnormal
temperature, which is convenient to find faults and hidden dangers.
3. Free from electromagnetic interference. There is usually a large magnetic
field interference near high-voltage lines and substations, and the operating band
of the infrared camera is 3 to 5 μm and 7.5 to 13 μm, which is far away from the
electromagnetic spectrum. , Get stable and reliable thermal imaging.
4. Wide coverage and more efficient. In power inspections, infrared cameras
are often used with drones. When detecting hotspot failures, drones equipped with
infrared cameras often maintain a distance of several meters or tens of meters from
the equipment, making it easy to implement large-scale inspection . After the hot
spot abnormality is found in the field of view, the operation and maintenance
personnel perform targeted detection, and the inspection efficiency is extremely
high. UAV with infrared thermal imaging for power inspection
小 Interpretation Tips for Infrared Thermal Imaging
Experienced power inspection personnel can quickly find defects in power
equipment with the help of thermal imaging, and classify defects according to
thermal conditions, such as general defects, severe defects, and critical defects. The

4. interpretation methods they often use are: surface temperature judgment method,
similar comparison method, relative temperature difference method, etc.
1. Surface temperature judgment method: The area temperature measurement
function of MMC Thyea T2 thermal imaging camera can quickly help judge the
surface temperature. Just select any area to get the average temperature, the
highest value, and the lowest value of the area.
2. Similar comparison method: Use the point temperature measurement
function to analyze and compare the temperature difference between the same
group of three-phase equipment, the same phase equipment, and the
corresponding parts between similar equipment.
3. Relative temperature difference method: Use the isotherm function to
visually display different temperature intervals in the screen, and you can quickly
find abnormal temperature differences.
Replace "rescue" with "predictive"
In power operation and maintenance, the application of sensing technologies
such as infrared thermal imaging can accurately and intuitively find fault points,
assist in determining the status of power equipment, and help modern power

5. operation and maintenance to transform from traditional "periodical maintenance"
and "fault maintenance" to "predictability" Overhaul "to comprehensively improve
the stability and reliability of power supply.
Thyea ZT40 dual light thermal imaging camera
Electricity workers use MMC industrial UAV equipped with Thyea series infrared
cameras to accurately take pictures of composite insulator cores, connections
between lines and fittings, and other ancillary equipment. After measuring and
measuring temperature, they form infrared images of pole towers. It is possible to
quickly diagnose and timely detect the line body heating. defect. The patrol
efficiency is about 6 to 10 times that of manual, which ensures the safe operation of
high-load section lines.
By:www.mmcuav.com