Mobile transformer oil purification system

The mobile transformer oil purification system is a flexible oil treatment equipment, dedicated to on-site regeneration, purification and performance recovery of transformer oil. It is widely used in power systems, substations, large industrial and mining enterprises and other scenarios. The following is a detailed introduction to its core functions, technical features and typical applications:

Introduction to the functions of the mobile transformer oil purification system

1. Deep purification

- Remove particulate impurities (metal chips, fibers, carbides, etc.) in transformer oil with an accuracy of 1-5 microns.

- Remove moisture (free water, dissolved water), and the water content after treatment can be less than 10ppm (international standard IEC 60422).

- Separate gases (such as fault gases such as H₂, CH₄ and air) to increase the dielectric strength of the oil (up to 60kV or more).

2. Oil regeneration

- Adsorb acidic substances (reduce the acid value to ≤0.03mg KOH/g).

- Filter out aging products (such as colloids, oxides) and restore the antioxidant properties of oil products.

3. Online monitoring

- Real-time detection of key indicators such as moisture content, particle size, dielectric strength, acid value, etc. Some systems integrate oil chromatography analysis function (DGA).

4. Key parameters for selection

| Parameters | Reference range | Description |

|--------------------|----------------------------|-------------------------------------------------------|

| Processing flow | 1000-12000L/h | ｓｅｌｅｃｔ according to transformer capacity (e.g. 500kV transformer requires ≥6000L/h)|

| Working vacuum | -0.095~-0.1MPa | Affects dehydration efficiency |

| Breakdown voltage increase | ≥25kV→≥60kV | Comparison index before and after purification |

| Power supply requirements | 380V/50Hz or diesel generator drive | Pay attention to power supply compatibility during field operations |

5. Industry standards and certifications

- International standards: IEC 60422 (Guidelines for Maintenance of Mineral Insulating Oil), IEEE Std 637 (Oil Treatment Equipment)

- Chinese standards: DL/T 521 "Guidelines for Maintenance and Management of Transformer Oil", GB/T 14542 "Maintenance Procedures for Operating Transformer Oil"

- Safety certification: explosion-proof certification (Ex), CE/UL certification (export requirements)

Operation and maintenance recommendations

1. Regular purification: Perform a comprehensive purification of the operating oil every 2 years (or start when the oil medium loss tangent tanδ>0.05).

2. Filter element replacement: When the pressure difference exceeds 0.3MPa, the precision filter element needs to be replaced.

3. Data recording: Establish an oil quality change trend chart to predict potential transformer failures (for example, a sudden increase in moisture may indicate a respirator failure).

Added value: The mobile system can reduce the frequency of transformer cover maintenance, and the cost of a single purification is more than 60% lower than the cost of oil change, which is particularly suitable for power grid maintenance in remote areas.