TRANSFORMER OIL METHANE /ETHANE AND ACETYLENE FREQUENT ACCUMULATION

[arjun_athi]

Dear All,

Attached is the oil analysis for the power transformer inside Farabi petrochemical plant in Saudi Arabia.

The client is frequently facing some issue on the accumulation of Ethane, methane, hydrogen and Acetylene on the transformer insulation oil.

We are trying to study the reason for the same but we are not able to confirm the issue and cause for the same.

Requesting you to kindly look in to this issue and support and assist us to get the reason for the same.

Thanks in advance for considering this subject as important.

Arjun
Saudi Arabia.

 

[Hv&Lv]

Dear All,

Attached is the oil analysis for the power transformer inside Farabi petrochemical plant in Saudi Arabia.

The client is frequently facing some issue on the accumulation of Ethane, methane, hydrogen and Acetylene on the transformer insulation oil.

We are trying to study the reason for the same but we are not able to confirm the issue and cause for the same.

Requesting you to kindly look in to this issue and support and assist us to get the reason for the same.

Thanks in advance for considering this subject as important.

Arjun
Saudi Arabia.

File type??
need to insert file as a .pdf or something other than your SharePoint account.

 

[synchro]

From the Wikipedia article at the link below:

• Oil overheating results in breakdown of liquid by heat and formation of methane, ethane and ethylene.
• Corona is a partial discharge and detected in a DGA by elevated hydrogen.
• Arcing is the most severe condition in a transformer and indicated by even low levels of acetylene.

https://en.m.wikipedia.org/wiki/Dissolved_gas_analysis


M​​​​ore detail about this analysis and the causes of various gases is discussed here:

https://www.machinerylubrication.com/Read/457/dissolved-gas-analysis

 

[zog]

You have a whole lot of bad going on if you have high levels of all 4 gasses. Specifics of levels and different sample results over time would be helpful in diagnosing the problem. Typically the first gasses you see form are Hydrogen and Acetylene which are generated from minor arcing, then as corona discharge starts to occur you see rises in Methane, and finally as the oil begins to overheat as those problems progress you will see Ethylene rise rapidly. Ethylene and methane are also produced by cellulose breakdown, if you see CO and CO2 levels rise your transformer is usually toast.