YUQORI VOLTLI KABELLARNING IZOLYASIYASINING YEMIRILISHINI KAMAYTIRISH BILAN ULARNING XIZMAT KO'RSATISH MUDDATINI OSHIRISH BO'YICHA TADQIQOT
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Abstract:
Mazkur maqolada yuqori voltli elektr kabellarida izolyatsiya yemirilishining asosiy fizik-mexanik va elektro-kimyoviy mexanizmlari tahlil qilinadi hamda ularni kamaytirish orqali kabel tizimlarining xizmat muddatini oshirish yo‘llari ilmiy adabiyotlar asosida yoritiladi. Qattiq dielektriklarda, xususan, XLPE (cross-linked polyethylene) va EPR (ethylene propylene rubber) asosidagi izolyatsiyalarda elektr daraxtlanish (electrical treeing), suv daraxtlanishi (water treeing), qisman razryadlar (partial discharge), termik qarish va oksidlanish jarayonlari izolyatsiya ishdan chiqishining asosiy sabablari sifatida ko‘rsatilgan [1], [2], [3]. IEC va IEEE standartlari hamda CIGRE texnik hisobotlarida izolyatsiyaning uzoq muddatli mustahkamligi kuchlanish, temperatura va namlikka bog‘liq holda baholanishi qayd etilgan [4], [5], [6]. Maqolada materialni takomillashtirish, nanoto‘ldirgichlar qo‘llash, namlikdan himoyalash, metall ekran konstruksiyasini optimallashtirish hamda diagnostika usullarini joriy etish orqali kabel xizmat muddatini uzaytirish imkoniyatlari asoslab beriladi.
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References:
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