Realtime Vacuum TransformerOil Regeneration Purifier with Remote Monitoring

Lifetime Extension for Power Transformers

 

Needs and problems with power transformers:

- they have to work 24h and 7 days per week (no rest allowed)

- they have bad availability all over the world (waiting time on new transformers up to 3 years)

- if they break down it causes downtime of production (worst case for every company or power station)

- they have accelerated rising prises

- insurance companies don?t pay a damage, if a company could?t not verify, that every security and care for the transformer was done. If they find any carelessness they will not pay the damage!

Solution:

- the main problem why transformers break down is if Cellulose is dissolving in case of bad transformer-oil quality.

- Lifetime extension technology for power transformers secures a stabilized quality of the transformer-oil. (normally no necessary transformer-oil change forever)

- the principle is to abstract water from the transformers oil to raise breakdown voltage and for this extend lifetime of cellulose

- The output of the solution is a detailed oil-quality-protocol, which is to document the insurance company in case of damage, that everything was done to save the transformer. (monitoring can be done remote)

 

What transformers can be treated with this technologies?

Wet power-transformers between 5kVA and 900 MVA

cost-effectiveness calculation:

-transformer-Oil costs 2,50 and 3,00 Euro per liter

-transformers with 5 kVA have approximately 1.200 1.300 liter oil

-transformers with 80 KVA have approximately 15.000 liter oil

This life extension solutions cost approximately 70.000 Euro plus service cost plus other cost like transport etc.

On the other side are minimum 25.000 liter of new bought transformer-oil.

But - what is better?

-new transformer oil is no guaranty for secured cellulose (mostly water is in cellulose)

-new transformer oil must bee monitored also, to guarantee up-time

-new transformer oil causes down time to leave out, clean and fill up and so on and life extension technology causes no downtime

How it works?

The basic rule for any treatment of the oil inventory is to remove only the undesired substances from the oil. The soft removal of the diluted water from the oil is easily achieved (without a high vacuum and high temperature, which potentially deteriorate the oil), by freezing up the water vapor under low vacuum and by reaching oil temperature rates at only about 60 degrees, because the water removal process is simultaneously intensified by a so-called bubble bed procedure. A continuous degassing of the oil without the undesired removal

of light oil fractions enables the liquid piston principle simultaneously. In the first stage (evacuation), the sinking oil level acts as a piston and creates the vacuum necessary to separate gases and vapors from the oil. In the second stage (compression), the liberated gas mixture is gradually compressed by the rising oil level. The condensation of oil vapors takes place and the light fractions get mixed back in the oil. Only non-condensable substances are then expelled from the drier into surroundings.

Important!
English and Chinese Datasheet is available. Could be sent by e-mail.