research-focus Research Focus International Scientific Journal Research Focus 2181-3833 Ilm-fan va innovatsiyalar akademiyasi 10.66073/researchfocus.v4i6.1674 REL-A-012998 05.00.00 OPERATIONAL CHALLENGES AND PERFORMANCE DEGRADATION PATTERNS IN MODERN WIND ENERGY SYSTEMS: A COMPREHENSIVE ANALYSIS OF GRID INTEGRATION AND MAINTENANCE ISSUES ЭКСПЛУАТАЦИОННЫЕ ПРОБЛЕМЫ И ЗАКОНОМЕРНОСТИ СНИЖЕНИЯ ПРОИЗВОДИТЕЛЬНОСТИ В СОВРЕМЕННЫХ ВЕТРОЭНЕРГЕТИЧЕСКИХ СИСТЕМАХ: КОМПЛЕКСНЫЙ АНАЛИЗ ВОПРОСОВ ИНТЕГРАЦИИ В СЕТЬ И ТЕХНИЧЕСКОГО ОБСЛУЖИВАНИЯ ZAMONAVIY SHAMOL ENERGETIKASI TIZIMLARIDA EKSPLUATATSION MUAMMOLAR VA UNUMDORLIKNING PASAYISH QONUNIYATLARI: TARMOQQA INTEGRATSIYA VA TEXNIK XIZMAT KO‘RSATISH MASALALARINING KOMPLEKS TAHLILI Sa‘dullayev Tuymurod Mardullo oglu Associate Professor, Department of Electrical Machines and Drives Engineering, Tashkent State Technical University Taniyev Mirzohid Khurramovish 06 07 2025 2025 4 6 54 59 https://creativecommons.org/licenses/by/4.0 This work is licensed under a Creative Commons Attribution 4.0 International License.

this paper presents a comprehensive analysis of operational issues in modern wind energy systems, based on a 36-month study of 450 turbines. The results show that blade-related failures (32.4%) and gearbox malfunctions (24.7%) are the most frequent causes of downtime, costing an average of $47,000 per turbine annually. Predictive maintenance strategies reduced unplanned downtime by 34% and improved availability to 94.2%. Grid integration challenges such as voltage fluctuations and reactive power issues were also assessed. These findings provide practical insights for enhancing WES reliability and performance.

в данной статье представлен всесторонний анализ эксплуатационных проблем современных ветроэнергетических систем, основанный на исследовании 450 турбин в течение 36 месяцев. Установлено, что наибольшее количество отказов связано с лопастями (32,4%) и редукторами (24,7%), что приводит к значительным экономическим потерям — в среднем $47,000 на турбину в год. Анализ также показал, что внедрение стратегий предиктивного обслуживания снижает незапланированные простои на 34% и увеличивает коэффициент готовности до 94,2%. Особое внимание уделено проблемам интеграции в энергосеть, включая колебания напряжения и реактивную мощность. Полученные результаты имеют практическое значение для повышения надёжности и эффективности ВЭС.

ushbu maqolada 450 ta turbinaning 36 oylik tadqiqotiga asoslangan holda zamonaviy shamol energetikasi tizimlaridagi ekspluatatsion muammolarning keng qamrovli tahlili keltirilgan. Natijalar shuni ko‘rsatadiki, kurakchalar bilan bog‘liq nosozliklar (32,4%) va reduktor nosozliklari (24,7%) to‘xtab qolishning eng ko‘p uchraydigan sabablari bo‘lib, yiliga har bir turbina uchun o‘rtacha $47,000 xarajat keltiradi. Prognozli texnik xizmat ko‘rsatish strategiyalari rejadan tashqari to‘xtashlarni 34% ga kamaytirdi va tayyorlik koeffitsiyentini 94,2% gacha oshirdi. Kuchlanish tebranishlari va reaktiv quvvat masalalari kabi tarmoqqa integratsiya muammolari ham baholandi. Olingan natijalar shamol energetikasi tizimlarining ishonchliligi va unumdorligini oshirish uchun amaliy ahamiyatga ega.

 wind energy systems turbine maintenance grid integration operational efficiency renewable energy ветроэнергетика обслуживание турбин интеграция в сеть эксплуатационная эффективность возобновляемая энергия shamol energetikasi tizimlari turbinaga texnik xizmat ko‘rsatish tarmoqqa integratsiya ekspluatatsion samaradorlik qayta tiklanadigan energiya Global Wind Energy Council. "Global Wind Report 2023." Brussels: GWEC, 2023. Tavner, P.J., Xiang, J., and Spinato, F. "Reliability analysis for wind turbines." Wind Energy, vol. 10, no. 1, pp. 1-18, 2007. Hahn, B., Durstewitz, M., and Rohrig, K. "Reliability of wind turbines: Experiences of 15 years with 1,500 WTs." Wind Power in Power Systems, 2nd ed., Chichester: John Wiley & Sons, 2012. International Renewable Energy Agency. "Wind Power: Technology Roadmap." Abu Dhabi: IRENA, 2023. Shafiee, M., and Dinmohammadi, F. "An FMEA-based risk assessment approach for wind turbine systems: A comparative study of onshore and offshore." Energies, vol. 7, no. 2, pp. 619-642, 2014. Spinato, F., Tavner, P.J., van Bussel, G.J.W., and Koutoulakos, E. "Reliability of wind turbine subassemblies." IET Renewable Power Generation, vol. 3, no. 4, pp. 387-401, 2009. Arabian-Hoseynabadi, H., Oraee, H., and Tavner, P.J. "Failure modes and effects analysis (FMEA) for wind turbines." International Journal of Electrical Power & Energy Systems, vol. 32, no. 7, pp. 817-824, 2010. Mohseni, M., and Islam, S.M. "Review of international grid codes for wind power integration: Diversity, technology and a case for global standard." Renewable and Sustainable Energy Reviews, vol. 16, no. 6, pp. 3876-3890, 2012. Ciang, C.C., Lee, J.R., and Bang, H.J. "Structural health monitoring for a wind turbine system: a review of damage detection methods." Measurement Science and Technology, vol. 19, no. 12, pp. 122001, 2008. Yang, W., Tavner, P.J., Crabtree, C.J., Feng, Y., and Qiu, Y. "Wind turbine condition monitoring: technical and commercial challenges." Wind Energy, vol. 17, no. 5, pp. 673-693, 2014. Musial, W., Butterfield, S., and McNiff, B. "Improving wind turbine gearbox reliability." European Wind Energy Conference, Milan, Italy, 2007. Parent, O., and Ilinca, A. "Anti-icing and de-icing techniques for wind turbines: Critical review." Cold Regions Science and Technology, vol. 65, no. 1, pp. 88-96, 2011. Tsili, M., and Papathanassiou, S. "A review of grid code technical requirements for wind farms." IET Renewable Power Generation, vol. 3, no. 3, pp. 308-332, 2009. Slootweg, J.G., de Haan, S.W.H., Polinder, H., and Kling, W.L. "General model for representing variable speed wind turbines in power system dynamics simulations." IEEE Transactions on Power Systems, vol. 18, no. 1, pp. 144-151, 2003. García Márquez, F.P., Tobias, A.M., Pinar Pérez, J.M., and Papaelias, M. "Condition monitoring of wind turbines: Techniques and methods." Renewable Energy, vol. 46, pp. 169-178, 2012. Dinwoodie, I., Endrerud, O.E.V., Hofmann, M., Martin, R., and Sperstad, I.B. "Reference cases for verification of operation and maintenance simulation models for offshore wind farms." Wind Engineering, vol. 39, no. 1, pp. 1-14, 2015.