YUQORI VOLTLI KABELLARNING IZOLYASIYASINING YEMIRILISHINI KAMAYTIRISH HISOBIGA ULARNING HIZMAT KO'RSATISH MUDDATINI OSHIRISH
Kalit so‘zlar:
Yuqori voltli kabellar, XLPE izolyatsiya, degradatsiya, qisman razryadlar, daraxtsimon kanallar (treeing).Annotatsiya
Ushbu ilmiy maqola yuqori kuchlanishli elektr kabellarining, xususan, cross-linked polyethylene (XLPE) izolyatsiyasiga ega kabellarning ishlash jarayonida yuzaga keladigan degradatsiya mexanizmlarini tahlil qilishga bag‘ishlangan. Maqolada izolyatsiyaning yemirilishiga olib keluvchi asosiy omillar, jumladan, qisman razryadlar, daraxtsimon kanallarning (electrical treeing) shakllanishi, termik qarish va namlik ta’siri batafsil ko‘rib chiqilgan. Izolyatsiyaning buzilishini oldini olish va kabel tizimlarining xizmat ko‘rsatish muddatini uzaytirish bo‘yicha zamonaviy texnologik yechimlar, materialshunoslikdagi yangiliklar (nano-qo‘shimchalar, super-toza polimerlar) hamda diagnostika usullari (qisman razryadlarni onlayn monitoring qilish) tahlil qilingan.
Foydalaniladigan adabiyotlar
Chen, G., & Davies, A. E. The influence of defects on the short-term breakdown characteristics and long-term DC performance of LDPE insulation // IEEE Transactions on Dielectrics and Electrical Insulation. – 2000. – Vol. 7, No. 3. – P. 406–412.
Boggs, S. A., & Densley, J. Fundamental phenomena in high voltage polymeric cable insulation // IEEE Electrical Insulation Magazine. – 2000. – Vol. 16, No. 3. – P. 15–25.
Montanari, G. C. Bringing an insulation to failure: the role of space charges // IEEE Transactions on Dielectrics and Electrical Insulation. – 2011. – Vol. 18, No. 2. – P. 339–364.
Nelson, J. K., & Fothergill, J. C. Internal charge behaviour of nanocomposites // Nanotechnology. – 2004. – Vol. 15, No. 5. – P. 586–595.
IEC 62067:2011. Power cables with extruded insulation and their accessories for rated voltages above 150 kV (Um = 170 kV) up to 500 kV (Um = 550 kV) – Test methods and requirements. – Geneva: International Electrotechnical Commission, 2011. – 182 p.
Stone, G. C., Boulter, E. A., Culbert, I., & Dhirani, H. Electrical Insulation for Rotating Machines: Design, Evaluation, Aging, Testing, and Repair. – 2nd ed. – Hoboken: John Wiley & Sons, 2014. – 512 p.
