روشی نوین در شناسایی و طبقه بندی خطای شبکه‌های MTDC با خطوط انتقال ترکیبی کابل و شبکه هوایی

نوع مقاله : مقاله برق

نویسندگان

1 استاد، دانشکده مهندسی برق و کامپیوتر، دانشگاه سمنان، سمنان، ایران

2 دانشجوی دکتری، دانشکده مهندسی برق و کامپیوتر، دانشگاه سمنان، سمنان، ایران

3 دانشیار، دانشکده فنی و مهندسی، دانشگاه دامغان، دامغان، ایران

چکیده

در سالیان اخیر استفاده از خطوط DC جهت اتصال منابع تولید پراکنده از قبیل مزارع بادی فراساحلی با رشد روزافزونی روبه‌روست. یکی از چالش‌های حفاظت خطوط DC مربوط به خطوط ترکیبی کابل‌های زیرزمینی و خطوط هوایی می‌باشد. در این مقاله، روشی  نوین جهت شناسایی و طبقه‌بندی خطای MTDC ترکیبی به کمک ابزارهای پردازش سیگنال در حوزه زمان و با استفاده از داده‌های یک پایانه ارائه شده که دارای مزایایی از قبیل سادگی پیاده سازی، سرعت بالای شناسایی، فرکانس پایین نمونه‌برداری و مقاومت مناسب در برابر نویز می‌باشد. به‌وسیله انجام شبیه‌سازی‌های متعدد در محیط نرم‌ا‌فزاری PSCAD و پیاده‌سازی الگوریتم حفاظتی در محیط نرم‌افزاری MATLAB، تاثیر پارامترهای خطا همچون مقاومت، نوع و محل وقوع خطا بر عملکرد طرح حفاظتی پیشنهادی مورد صحت سنجی قرارگرفته است. همچنین کارآمدی روش پیشنهادی در سناریوهای مختلف بهره‌برداری از خطوط ترکیبی همچون تغییر طول خط انتقال، تغییر درصد خطوط کابلی و هوایی و افزایش تعداد بخش‌های خطوط مورد بررسی قرار گرفته و نشان‌دهده عملکرد قابل قبول آن می‌باشد

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

A New Fault Detection and Classification Scheme in MTDC Grids with Hybrid Cable and Overhead Transmission Line

نویسندگان [English]

  • Zahra Moravej 1
  • Amir Imani 2
  • Mohammad Pazoki 3
1 Professor, Faculty of Electrical and Computer Engineering, Semnan University, Semnan, Iran
2 PhD Student, Faculty of Electrical and Computer Engineering, Semnan University, Semnan, Iran
3 Associate Professor, School of Engineering, Damghan University, Damghan, Iran
چکیده [English]

The growth of exploitation of distributed generation sources (DGs) such as offshore wind farms makes DC networks an interesting alternative to conventional AC grids. But protection of DC lines is one of the main challenges of these grids especially in hybrid non-homogenous corridors including underground cables and overhead lines. In this paper, a new single-end time domain-based protection scheme for fault detection and classification is presented with remarkable features such as easy implementation, low computation burden, low sampling frequency, no setting parameters requirement, and also appropriate performance in noisy conditions. To validate the proper performance of the proposed scheme, several scenarios are simulated including internal and external DC and AC faults, and severe load variations in EMTDC/PSCAD software environment. Also, some hybrid line scenarios such as line length variation, OHL or Cable length changes, and increasing the number of line segments are investigated. The result shows desirable performance in various conditions.

کلیدواژه‌ها [English]

  • HVDC line
  • Fault detection
  • Fault classification
  • ITD
  • Non-homogenous line

مراجع

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مدل سازی در مهندسی
دوره 22، شماره 76
اردیبهشت 1403
صفحه 141-154

فایل ها

سابقه مقاله

  • تاریخ دریافت: 11 مرداد 1402
  • تاریخ بازنگری: 12 شهریور 1402
  • تاریخ پذیرش: 15 مهر 1402

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