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Time：2025-05-09 13:26:58 Reading volume：
Benefits of transformer oil treatment equipment
Transformer oil treatment equipment (such as oil filter, vacuum dehydration device, centrifuge, etc.) is a key tool for the power system to maintain the performance of transformer oil, with the following significant advantages:
- Remove moisture: reduce the moisture content in the oil (can be treated to ≤10ppm) to avoid the decrease of insulation strength (breakdown voltage is restored to ≥50kV).
- Remove particulate matter: filter 1-5μm metal debris, dust, etc., to prevent local discharge or short circuit.
- Reduce acidic substances: reduce the acid value (≤0.05mg KOH/g) through adsorption or regeneration treatment, and delay the aging of oil-paper insulation.
Effect: significantly reduce the failure rate of transformers (such as breakdown, local overheating), and extend the life of equipment by more than 10 years.
- Reduce oil change costs: The cost of filtration and regeneration is only 20%-30% of new oil, and a single oil change for large transformers can save tens of thousands of yuan.
- Save maintenance costs: avoid high maintenance costs such as winding cleaning and component replacement caused by oil quality deterioration.
- Extend oil product cycle: After high-quality treatment, the service life of transformer oil can be extended by 2-3 times.
- Reduce waste oil emissions: Through regeneration technology (such as clay adsorption, vacuum dehydration), waste oil is restored to new oil standards to avoid the problem of hazardous waste treatment.
- Comply with regulatory requirements: meet the recycling regulations of waste mineral oil in the "National Hazardous Waste List" and reduce the risk of environmental penalties.
- Optimize heat dissipation performance: Clean oil has better thermal conductivity, which can reduce the temperature rise of the transformer by 5-10℃ and reduce energy consumption.
- Stabilize electrical parameters: Maintain the dielectric loss factor (tanδ) <0.5% (90℃) to ensure that reactive power loss is minimized.
Modern high-end equipment (such as va acuum oil filter) can simultaneously achieve:
- Dehydration (vacuum evaporation)
- Degassing (removal of dissolved oxygen and nitrogen)
- Impurity removal (multi-stage precision filtration)
- Deacidification (optional adsorption module)
Case: After 72 hours of continuous treatment, the water content of a 500kV transformer oil dropped from 50ppm to 5ppm, and the breakdown voltage increased from 35kV to 60kV.
| Scenarios | Recommended equipment | Core functions |
|------------------------|----------------------------|-----------------------------|
| Daily maintenance | Precision oil filter trolley | Rapid removal of particulate matter (5μm) |
| Sudden water inflow accident | Centrifuge + vacuum oil filter | Emergency dehydration and degassing |
| Deep deterioration of oil quality | Regeneration device (white clay + molecular sieve) | Removal of colloid and acidic compounds |
- Online monitoring: Real-time display of parameters such as water content, particle size, breakdown voltage, etc. (such as German HEDRICH equipment).
- Automatic start and stop: Set thresholds according to oil quality, and automatically start the filtering program when the standard is exceeded.
- Remote control: Unattended operation is achieved through the Internet of Things (IoT).
The comprehensive value of transformer oil treatment equipment
- Economic efficiency: reduce oil costs by more than 60%;
- Reliability: ensure stable operation of transformers in extreme weather (high humidity, low temperature);
- Sustainability: promote green operation and maintenance in the power industry and reduce resource waste.
Recommendation:
For transformers with voltage levels of 110kV and above, a vacuum oil filter + online monitoring system should be configured to achieve active preventive maintenance of oil quality.
