Corpus ID: 127638517

State of the Art Review On Managing Vegetable Oil Filled Transformers

  title={State of the Art Review On Managing Vegetable Oil Filled Transformers},
  author={Daniel Martin and Hui Ma and C. Ekanayake and T. Saha and N. Lelekakis and K. Williams},
Ten years have passed since the Utilities began using the vegetable oil based dielectric in their power transformers. Some advantages to using vegetable oil are that their environment impact is reduced if a spillage occurs, the higher flash and fire points assist with overall safety which can result in lower substation upgrade costs, and interactions between the fluid and cellulose have been identified to extend insulation life. They are >95% biobased, providing a very high degree of… Expand
4 Citations
A critical review of plant-based insulating fluids for transformer: 30-year development
Abstract As a non-renewable resource, mineral oil has been re-evaluated for its value and suitability as the coolant and insulator in transformers because of its environmental unfriendliness, fireExpand
Methods for improving the workability of natural ester insulating oils in power transformer applications: A review
Abstract Even though natural insulating oils (NEI) oils are environmentally friendly, these oils have not gained widespread use in high-voltage oil-immersed power transformers because of theirExpand
Analysis of the field ageing of natural ester transformer dielectrics: Ten years of data
Since 2003 power transformers have been manufactured using natural esters as the insulating dielectric. Before this, these natural ester based dielectrics had been used in factory and distributionExpand
Review of vegetable oils behaviour at high temperature for solar plants: Stability, properties and current applications
Abstract With the possible depletion of oil resources and environmental considerations, vegetable oils are considered with great interest in high-temperature applications especially for solar plants.Expand


Exposure of vegetable oil impregnated transformer windings to air
A large quantity of research into the use of vegetable oils as transformer dielectrics has been performed over the years. Together with over ten years of practical experience, vegetable oil basedExpand
Water uptake rates of transformer paper insulation impregnated with vegetable oil
Vegetable oil-based dielectrics have been available for the past 15 years; relevant articles have been published [1]-[3]. One practical advantage of using a vegetable-oil dielectric in a powerExpand
Using a remote system to study the thermal properties of a vegetable oil filled power transformer: How does operation differ from mineral oil
There has been much discussion on the properties of natural esters and how they can be best applied as a transformer dielectric. The thermal properties of natural esters are different from those ofExpand
A Comparative Study of the Impact of Moisture on the Dielectric Capability of Esters for Large Power Transformers
  • D. Martin, Z. Wang
  • Materials Science
  • 2006 IEEE Conference on Electrical Insulation and Dielectric Phenomena
  • 2006
There is debate as to whether esters will be suitable replacements for mineral oil in large power transformers, such as those found on the transmission system of the UK. Research has reported thatExpand
A Comparative Study of the Chemical Stability of Esters for Use in Large Power Transformers
There is uncertainty as to whether ester oils will be suitable replacements for mineral oil used in large free breathing power transformers, such as those found on the transmission system of the UK.Expand
Investigating bubble formation in vegetable and mineral oil impregnated transformer paper insulation systems
Paper presents a review of past research on factors influencing bubble formation in transformer mineral oils. Previous research done by Monash University is also presented and compared to as theExpand
Ageing rate of paper insulation used in power transformers Part 1: Oil/paper system with low oxygen concentration
A substantial quantity of testing has been performed on the degradation of paper insulation over the decades. The aim being to better educate the electrical industry on how to best operate expensiveExpand
Diagnostic Application of Moisture Equilibrium for Power Transformers
This paper aims at providing reliable methods of assessing moisture in oil-paper-insulated power transformers. The traditional method of moisture evaluation, oil sampling with the subsequentExpand
Dissolved gas in oil analysis has been used for many years successfully for diagnosis and condition monitoring of mineral oil filled transformers. In future the diagnostic methods have to beExpand
Ageing rate of paper insulation used in power transformers Part 2: Oil/paper system with medium and high oxygen concentration
Utility asset managers and engineers are concerned about the life and reliability of their power transformers which depends on the continued life of the paper insulation. The ageing rate of the paperExpand