Abstract
Distribution transformer is the most vital component in the power system. Failure of a transformer leads to loss of revenue besides affecting the reliability of power supply to consumers. It can lead to the non-availability of the transformer for a long duration. Due to this, it is important to maintain the good quality of mineral oil. Thus, if the quality of the mineral oil is reduced then its dielectric strength/quality is degraded. Finally, it can affect the services of the transformer, in terms of continuity of power supply. This paper entails the development of a mathematical MATLAB/Simulink model which able to calculate the life cycle of distribution transformer and exact oil changing frequency. With the help of proposed Matlab/Simulink models, the plot curves between furan content formation versus time, pollution index versus time, and dielectric strength of oil versus time are also prepared. The article methodology uses the newly proposed equations, that are in accordance with IEEE standards: IEEE Guide for Loading Mineral-Oil-Immersed Transformers and Step-Voltage Regulators (IEEE Std. C57.91-2011) and IEEE Guide for the Reclamation of Insulating Oil and Criteria for Its Use (IEEE Std C57.637-2015). Then the case study for a 100 kVA distribution transformer is realized. So, with the input values in the Simulink model of load current of the transformer, dielectric constant of oil and flash point of oil we can estimate the life of the distribution transformer. Harmonic load factor in our research work is not included, in order to reduce influence of harmonic load we need to installed the active filter, which is not covered in this paper.
Highlights
The distribution transformers or line transformers provide the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customers [1], [2]
In the case of infrared spectroscopy (IR), the tested oil sample is placed on the path of an infrared beam of a different wavelength, which absorbs light when the energy of a typical molecular vibration corresponds to the incident radiation [25]
It is must change oil around 23 to 24 years, after the replacing the oil, the Furan content level will be reduced to all most zero, and the solid insulation may have been its middle of operational life
Summary
The distribution transformers or line transformers provide the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines to the level used by the customers [1], [2]. Furan content (FC), pollution index (PI), dielectric strength (DS) of transformer oil, it is possible to describe the life duration and the exact oil changing frequency. In the case of infrared spectroscopy (IR), the tested oil sample is placed on the path of an infrared beam of a different wavelength, which absorbs light when the energy of a typical molecular vibration corresponds to the incident radiation [25] After this beam has passed through the sample, the beam from the same source is interfered with but has not passed through the sample, and the spectrum is "extracted" using the Fourier transform of the recorded interference spectrum. There is a position on how to calculate the life cycle of the distribution transformer and the exact oil changing frequency To realize this task the new equations are proposed. The organization of the article is as follows: section 2 concerns life accession of distribution transformer; section 3 describes methods of parameters calculation; section 4 is results and discussion; section 5 concludes
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
