تخلیه های جزئی شارژ
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تخلیه های جزئی شارژ

عنوان فارسی مقاله: تخلیه های جزئی شارژ فعال شده توسط تکانه ها و ولتاژهای اضافه در مدل کابل ولتاژ بالا
عنوان انگلیسی مقاله: Partial discharges activated by impulses and superimposed voltages in a high voltage cable model
مجله/کنفرانس: مجله بین المللی سیستم های انرژی و توان الکتریکی – International Journal of Electrical Power & Energy Systems
رشته های تحصیلی مرتبط: مهندسی برق
گرایش های تحصیلی مرتبط: مهندسی الکترونیک
کلمات کلیدی فارسی: پلی اتیلن متصل به ولتاژ بالا، نقص اتصال مدل کابل، تخلیه جزئی شارژ، ولتاژ تکانه ای، ولتاژ اضافه
کلمات کلیدی انگلیسی: High-voltage cross-linked polyethylene (XLPE)، cable model joint defect، Partial discharge (PD)، Impulse voltage، Superimposed voltage
نوع نگارش مقاله: مقاله پژوهشی (Research Article)
نمایه: Scopus – Master Journals List – JCR
شناسه دیجیتال (DOI): https://doi.org/10.1016/j.ijepes.2020.106027
دانشگاه: Delft University of Technology, Electrical Sustainable Energy Department, 2628CD Delft, the Netherlands
ناشر: الزویر - Elsevier
نوع ارائه مقاله: ژورنال
نوع مقاله: ISI
سال انتشار مقاله: 2020
ایمپکت فاکتور: 5.627 در سال 2019
شاخص H_index: 100 در سال 2020
شاخص SJR: 1.260 در سال 2019
شناسه ISSN: 0142-0615
شاخص Quartile (چارک): Q1 در سال 2019
فرمت مقاله انگلیسی: PDF
تعداد صفحات مقاله انگلیسی: 11
وضعیت ترجمه: ترجمه نشده است
قیمت مقاله انگلیسی: رایگان
آیا این مقاله بیس است: خیر
آیا این مقاله مدل مفهومی دارد: ندارد
آیا این مقاله پرسشنامه دارد: ندارد
آیا این مقاله متغیر دارد: ندارد
کد محصول: E14851
رفرنس: دارای رفرنس در داخل متن و انتهای مقاله
فهرست انگلیسی مطالب

Abstract


۱٫ Introduction


۲٫ Experimental Set-Up


۳٫ Defect PD activation by impulse voltages


۴٫ Defect PD activation by superimposed voltages


۵٫ Conclusions


Declaration of Competing Interest


Acknowledgment


References

نمونه متن انگلیسی مقاله

Abstract


In practice, High-voltage (HV) cables are occasionally exposed to impulse and superimposed transient conditions, which may initiate partial discharges (PD) temporarily. Whether such PDs persist under AC voltage after the transient conditions have vanished, is at focus in the research described in this paper. Since for cross-linked polyethylene (XLPE) cables the accessories are weak links in the HV cable insulation system, we investigated the PD behavior of an artificial joint defect in a HV cable model under impulse and superimposed voltages. By applying a dedicated PD measuring system it was found that, the impulse and superimposed voltages can initiate PD in the artificial defect, which under local electrical field conditions can persist for some time. The different parameters of the applied voltages have different effects on the PD behavior.


Introduction


By facing the expanding power grids, underground power cables are installed more and more as an alternative to overhead lines [1,2]. By 2006, 57% of all cables in service are cross-linked polyethylene (XLPE) insulated cable, and 70% of all accessories are extruded types [3]. Nowadays extruded cables, especially XLPE cables, increasingly dominate new installments. This is due to their higher efficiency brought by the lower dielectric constant, higher operating temperature and easier manufacturing and installation process [4]. A failure investigation based on approximately 170 individual power cables in service over the period from 1997 until 2014 [5], learned that around 69% of the failures occurred in the cable accessories. More than half of the failure causes of XLPE cables in the sample pool (74%) occurred in the cable accessories due to installation related defects. The latter weak link of the insulation system is at focus in the present experimental investigation about transient effects. In service, power cable systems are occasionally subjected to abnormal superimposed transient conditions, where impulses are superimposed on the normal AC voltage. One example is a mixed overhead line and cable system, in which a switching action may lead to high frequency oscillations, causing large superimposed voltage impulses [6]. Cable systems are well designed to withstand the normal operating and transient conditions, however in such cases the insulation system faces exceptional superimposed transient overstress conditions. Usually, most defects in the cable insulation are detected through PD test during commissioning tests or maintenance tests.

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