What is the function of transformer oil?
Transformer oil is an indispensable and important component of power transformers. It not only plays the role of insulation and cooling, but also protects the internal components of the transformer. This article will introduce in detail the main functions and importance of transformer oil, and provide you with a comprehensive analysis based on the hot topics and hot content on the entire network in the past 10 days.
1. The main function of transformer oil
Transformer oil plays multiple roles in a transformer, the following are its main functions:
| Function | Detailed description |
|---|---|
| insulation | Transformer oil has high dielectric strength and can effectively isolate high-voltage and low-voltage windings to prevent arcing and short circuits. |
| cooling effect | A large amount of heat is generated when the transformer is running, and the oil takes away the heat through circulating flow to keep the temperature of the equipment stable. |
| protective effect | Oil can prevent oxidation and corrosion of internal metal parts and extend the service life of the transformer. |
| arc quenching | During switching operations, the oil can quickly extinguish the arc and prevent equipment damage. |
2. Hot topics on the Internet in the past 10 days and discussions related to transformer oil
Recently, hot topics about transformer oil mainly focus on environmental protection, technological innovation and industry standards. The following are some hot topics:
| topic | Main content |
|---|---|
| Environmentally friendly transformer oil | As environmental protection requirements increase, bio-based transformer oil and degradable oil have become research hot spots, and many companies have launched new products. |
| Intelligent monitoring technology | Monitor the status of oil (such as moisture and acid value) in real time through Internet of Things technology to provide early warning of failures and improve operation and maintenance efficiency. |
| International standards update | IEEE and IEC have released new versions of transformer oil performance standards, placing higher requirements on oxidation resistance and low-temperature fluidity. |
| Waste oil recycling | Many places have introduced policies to regulate the disposal of used transformer oil and encourage recycling to reduce environmental pollution. |
3. Performance indicators and selection suggestions of transformer oil
When selecting transformer oil, you need to pay attention to the following key indicators to ensure safe operation of the equipment:
| indicator | Standard range | importance |
|---|---|---|
| Dielectric strength | ≥30kV/2.5mm | Determines the insulation capacity. If it is too low, it may cause discharge. |
| flash point | ≥140°C | Reflects the safety of oil and is not easy to burn at high temperatures |
| Acid value | ≤0.03 mg KOH/g | Too high will accelerate metal corrosion |
| Moisture content | ≤20ppm | Moisture reduces insulation properties and promotes aging |
4. Transformer oil maintenance and replacement cycle
Regular maintenance is key to ensuring transformer oil performance:
1.Routine testing:Test dielectric strength, moisture and acid value every 6 months. In harsh environments, the cycle needs to be shortened.
2.Filter processing:When the impurity content in the oil exceeds the standard, a vacuum oil filter should be used to purify it.
3.Replacement standards:New oil needs to be replaced when the dielectric strength drops by 30% or the acid value exceeds 0.1 mg KOH/g.
4.Storage requirements:Unused oil should be stored sealed and away from light to avoid contact with air and moisture.
5. Future development trends
With the advancement of technology, the field of transformer oil will show the following trends:
1.Nano modified oil:By adding nanoparticles to improve thermal conductivity and insulation strength, some laboratories have made breakthrough progress.
2.Digital management:Combined with AI algorithms to predict oil aging trends, precise maintenance can be achieved.
3.Global procurement:Under the influence of geopolitics, companies tend to establish diversified supply chains to ensure the supply of oil products.
From the above analysis, it can be seen that transformer oil plays an irreplaceable role in the power system, and its technological development is also closely related to industry needs. Users should scientifically select and maintain transformer oil based on the latest standards and their own working conditions to ensure long-term stable operation of the equipment.
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