Cumulative damage-based diagnostics and control of oil-immersed power transformers

Nodirjon O. Ataullayev, San’at Z. Tog‘aymurodov

Энергия ва ресурс тежаш муаммолари · 2026-yil

Annotatsiya

Relevance: oil-immersed power transformers are among the most expensive and critical components of power supply systems, and their failures cause significant economic losses and long outages. Existing online monitoring devices usually track a single physical process (the thermal regime or gases dissolved in oil) and cannot express, in one indicator, the damage accumulated from short-circuit currents, vibration and thermal ageing. Aim: to develop a mathematical model, an algorithm and a real-time diagnostic device with operating mode control that account for cumulative damage caused by short-circuit currents, vibration acceleration and hot-spot temperature, and to evaluate their effectiveness. Methods: the Palmgren–Miner linear damage accumulation rule, the Arrhenius equation, Fisher’s criterion, the exponential reliability model, simulation in MATLAB/Simulink and a one-year experimental study on a 20 MVA, 110/6 kV transformer. Results: after introducing control, the switching damage share decreased from 8.75 % to 4.86 %, vibration damage from 4.0 % to 1.6 % and thermal degradation from 3.28 % to 0.30 %; the total annual damage fell from 16 % to 6.8 % (by 57.5 %). The one-year probability of failure-free operation increased from 0.852 to 0.934, the annual economic benefit amounted to 219 million UZS, and the payback period of the device is less than one month.

Maqola ma’lumotlari
MualliflarNodirjon O. Ataullayev, San’at Z. Tog‘aymurodov
JurnalЭнергия ва ресурс тежаш муаммолари
Nashriyot«Ўзбекэнерго» АО, ТДТУ, Ўзбекистон Республикаси ФА, Энергия ва ресурслар тежаш илмий-амалий ўқув маркази, «Ўздавэнергоназорат» давлат инспекцияси, «Энергия тежамкорлиги ва қайта тикланувчи энергия манбалари» илмий-тадқиқот лабораторияси
ISSN2091-5985, 2181-1946
Nashr sanasi2026-10-19
Son3
Betlar152-159
TilIngliz
Ilmiy sohaTexnika
Indeksga qo‘shilgan2026-10-22

Maqolaning asl sahifasi

Kalit so‘zlar

масляный силовой трансформатор, oil-immersed power transformer, moyli kuch transformatori

Ilmiy soha

Texnika

Iqtibos keltirish

APANodirjon O. Ataullayev, & San’at Z. Tog‘aymurodov (2026). Cumulative damage-based diagnostics and control of oil-immersed power transformers. Энергия ва ресурс тежаш муаммолари, (3), 152-159. https://energy.tdtu.uz/index.php/journal/article/view/463
GOST (OAK)Nodirjon O. Ataullayev, San’at Z. Tog‘aymurodov Cumulative damage-based diagnostics and control of oil-immersed power transformers // Энергия ва ресурс тежаш муаммолари. – 2026. – № 3. – P. 152-159.
MLANodirjon O. Ataullayev, and San’at Z. Tog‘aymurodov. “Cumulative damage-based diagnostics and control of oil-immersed power transformers.” Энергия ва ресурс тежаш муаммолари, (3), 152-159, 2026. https://energy.tdtu.uz/index.php/journal/article/view/463
ChicagoNodirjon O. Ataullayev, and San’at Z. Tog‘aymurodov. “Cumulative damage-based diagnostics and control of oil-immersed power transformers.” Энергия ва ресурс тежаш муаммолари, (3), 152-159 (2026). https://energy.tdtu.uz/index.php/journal/article/view/463
HarvardNodirjon O. Ataullayev, and San’at Z. Tog‘aymurodov (2026) ‘Cumulative damage-based diagnostics and control of oil-immersed power transformers’, Энергия ва ресурс тежаш муаммолари, (3), 152-159. https://energy.tdtu.uz/index.php/journal/article/view/463
BibTeX
@article{nodirjonoataullayev2026,
  title = {Cumulative damage-based diagnostics and control of oil-immersed power transformers},
  author = {Nodirjon O. Ataullayev and San’at Z. Tog‘aymurodov},
  journal = {Энергия ва ресурс тежаш муаммолари},
  year = {2026},
  number = {3},
  pages = {152-159},
  url = {https://energy.tdtu.uz/index.php/journal/article/view/463}
}

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