Health Concepts

By definition, “Health” is the state of being free from illness or injury.

The human body is made up of different organs and systems, each with its own purpose and function. These have a limited lifespan. A failure of some systems can cause death and some can be treated to recovery to maintain a longer life. Everything in the world has a definite lifespan. It is important to have some indication of the level of health and to monitor the body for any known illness.I am very passionate about both power transformers and my health. I take pride in ensuring that my health is in a good state and that my assets are in just as good a shape as can be.It is for this sole reason that I am dedicating this blog to putting my ideas out in the world and to get feedback from other knowledgeable peers so that there is continuous improvement on how we manage the life cycle of power transformers. 

There are many books and texts out there on power transformers, so my intent is to provide a succinct version that is well researched and can be quickly applied. This concept can clearly be applied to Power Transformers. Just like humans, power transformers have a limited design life which may either be exceeded or diminished depending on how it has been operated. The main structures of the power transformer have different characteristics and materials. The power transformer is made up of smaller components and systems of which failure can affect or diminish the health/life of the transformer.   

The life of the power transformer is directly related to the life of the insulating material [McNutt1]. The copper strands of the windings are insulated by Kraft paper insulation and the core is manufactured from sheets of steel that are individually insulated by a thin film of insulating coating, surrounded in oil. All the insulating materials are affected by changes in energy levels that are generally converted into heat in areas of localized hot spots. It is thus important to maintain a healthy state of a power transformer. The ageing components and by-products: that are organic in nature are affected basically by moisture and heat.

References

[McNutt1]

McNutt, W. J., “Insulation Thermal Life Considerations for Transformer Loading Guides,” IEEE Transactions on Power Delivery, Vol. 7, No. 1, pages 392-401, January 1992