Conclusion

Insulating fluids play an essential role in the performance and reliability of high-voltage electrical equipment. These liquids not only provide electrical insulation, but also act as coolants, lubricants and arc extinguishing agents. What's more, similar to blood in a living being, liquids also serve as a medium for monitoring the "state of health" of equipment.

Insulators age or degrade under the combined action of various stresses (thermal, electrical and mechanical) and chemical attacks, producing organic compounds such as peroxides, aldehydes, alcohols, acids, etc., and leading to a reduction in their performance. Some of these compounds, dissolved in the liquid, are analyzed and studied as indicators or chemical tracers. Chemical tracers are used as tools for dynamically monitoring the "health" and estimating the service life of equipment. The chemical composition...