Electric Substation Inspection

Infrared thermal imaging has been used to ensure the stable and safe operation of power supply. Fotric 348-L25 provides intuitive and analysis interface for maintenance engineers, making the predictive maintenance of electric substations more efficiently and safely.


Customer's Challenge

As a non-contact inspection method, infrared thermal imaging has been used in China electric power grid company since early 1980s, to ensure the stable and safe operation of power supply.


In recent years, due to country electric consumption’s high-speed growth, the requirement for predictive maintenance has grown increasingly higher. For example, the demand for frequent site diagnosis of voltage heating defects in substation become stronger, and this kind of application is demanding in imaging quality and accuracy.


Fotric 348-L25 is an advanced handheld thermal imager, with 640X480 resolution and 40mk sensitivity, and a 5”inches 1280x760 LCD screen, which provides intuitive and analysis interface for maintenance engineers.


Solution 1: 110KV Bus Lightning Arrester

From the Bus lightning arrestor’s thermal images on 348A’s screen, the temperature overview distribution shows voltage heating defects, uneven temperature rises from bottom to top.

So, although the elevated temperature is only 1.4 k, according to National standards of IR imaging diagnose, it appears critical defect, which indicates that this component must be replaced immediately.



Solution 2: Voltage Transformer’s 35KV bushings

From the high- voltage bushing’s thermal images on 348A screen, the temperature overview distribution shows voltage heating defects, overall heating. So elevated 3.4 k temperature is also a critical defect, according to National Standards of infrared imaging diagnose, which means that this component must be replaced immediately.


Result

Equipped with FOTRIC 348A with 25° lens, our clients can run predictive maintenance of electric substations more efficiently and more safely. Not only dos it save the inspection service’s working hours, but also prevent production shutdown, which could threaten the power supply of residence community or industrial factories. In addition, it also makes the electric substation operation safer by reduce potential fire accidents caused by abnormal temperature rise.