Shutenko O. Improvement of Diagnostics of Power High-voltage Transformers on the Basis of the Analysis of Laws of Long Ageing Oils

Object of researches - long (on an extent till 50 years) influence of strong electric fields and the big currents on processes of deterioration insulation properties of transformer oils in tanks of high-voltage power transformers. The purpose of dissertational research - improvement of diagnostics of power high-voltage transformers due to revealing and the account of influences of strong electric fields and the big currents on law of long ageing of oils. Methods of researches - theoretical positions of technics and electrophysics of high voltage, physics dielectrics and methods of processing of experimental data. Results of research - improvement of methods of diagnostics of a condition of high-voltage power transformers. Novelty - will consist in the account of laws of long ageing transformer oils in conditions of influence of strong electric fields and the big currents and influences of operational factors in methods of diagnosing of a condition of high-voltage power transformers. Communication between loading of high-voltage power transformers and intensity of ageing of transformer oils is established. The method of an estimation of a degree of ageing of transformer oils which allows to reveal transformers with the accelerated ageing oils at an early stage is developed. The method of interpretation of results chromatographic analysis of the gases dissolved of oil for detection of processes ionization ageing and thermal destructions transformer oils and the basic isolation of transformers is developed. Indistinct neural networks for forecasting values insulation parameters of oils are developed and trained. Degree of introduction - results robots are introduced in Northern power system NEK "Ukrenergo" (Kharkov), in OSC "Sumyoblenergo" (Sumy), SC "Kharkovoblenergo", (Kharkov), and also in educational process of faculty of transfer of electric energy NTU "HPI" " in lecture rates " Technics{Technical equipment} and electrophysics of high voltage ", " Mathematical bases of technical diagnostics ", "Bases of operation of objects electropower ", " The theory of planning of experiment ". Sphere (branch) of use - electropower branch, educational process.