Why is the key to the lifespan of power transformers determined by the "purity" of the insulating oil? - How does the vacuum insulating oil treatment equipment extend the equipment's lifespan by over 30%?
In high-voltage power transmission and distribution systems, power transformers are the core assets, and their reliability directly affects the safety of the power grid and the operation and maintenance costs. However, many enterprises overlook a crucial fact: 70% of the aging of transformers is caused by the deterioration of insulating oil.
The accumulation of moisture, gases, particles and acidic substances will significantly reduce the dielectric strength of insulating oil, accelerate the aging of solid insulating materials, and ultimately lead to local discharge or even breakdown faults. The traditional filtration methods (such as plate-and-frame oil filters) can only remove large particles of impurities but cannot effectively dehydrate or de-gas - this is precisely the irreplaceable value of vacuum insulating oil treatment equipment.
How does vacuum treatment achieve "deep purification"?
The vacuum insulating oil treatment equipment employs a three-level collaborative purification technology:
Multi-stage precise filtration: a 5μm - 0.5μm gradient filtration process, effectively intercepting metal particles, fibers and carbides;
Efficient vacuum dehydration and degassing: In an ultra-high vacuum environment of ≤ 0.5 mbar, the evaporation temperature of water drops below 30°C, and the moisture content can be reduced to ≤ 5 ppm, while the gas content is ≤ 0.1%.
Regeneration adsorption system (optional): Using activated alumina or Fuller's Earth adsorbents, remove the aged products and acid values in the oil, restoring the performance of the oil.
Test data: After the provincial power grid company conducted annual oil treatment on the 110kV main transformer, the breakdown voltage increased from 38kV to 68kV, and the dielectric loss factor (tanδ) decreased by 62%. It is expected that the service life of the transformer will be extended by 5 to 8 years.
Not just "cleaning", but also "preventive maintenance"
Avoid unplanned downtime (single failure can result in losses of tens of thousands of yuan)
Reduce costs for new oil procurement and waste oil disposal (recycling treatment can enable 90% of used oil to be reused)
Meet the requirements of international standards such as IEC 60296 and ASTM D924.
In today's era where energy costs are high and the full life cycle cost (LCC) management of equipment has become an industry consensus, investing in a high-performance vacuum insulation oil treatment equipment is not an expense but a long-term insurance for asset safety.