یک سامانه حفاظت ویژه جدید جهت جلوگیری از وقوع ناپایداری ولتاژ بلندمدت در مقابل حملات گرافیتی

نوع مقاله : قدرت- انتقال و توزیع

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشکده مهندسی برق، دانشگاه صنعتی سهند

2 استادیار گروه قدرت دانشکده برق دانشگاه صنعتی سهند

چکیده

بمب‌های گرافیتی از جمله سلاح‌های غیر مخرب مدرن هستند که با ایجاد اتصال کوتاه در سامانه‌های قدرت منجر به وقوع خاموشی سراسری در این شبکه‌ها می‌شوند. هدف اصلی این مقاله ارائه یک سامانه حفاظت ویژه (SPS) جهت جلوگیری از وقوع ناپایداری ولتاژ بلندمدت پس از حملات گرافیتی است. در این سامانه حفاظت ویژه، برای آنکه اقدامات اصلاحی با هماهنگی مناسبی انجام شود و خطر ناپایداری کاهش یابد، با استفاده از مفهوم فاصله الکتریکی، شبکه قدرت به چند ناحیه کنترل ولتاژ (VCA) تقسیم می‌شود. سپس با توجه به وضعیت پایداری ولتاژ در هر ناحیه که به کمک شاخص RPRI تعیین می‌شود، سامانه حفاظت ویژه ارائه ‌شده برای جلوگیری از ناپایداری ولتاژ بلندمدت مورد استفاده قرار خواهد گرفت. در این مقاله، با استفاده از محیط DPL نرم‌افزار DIgSILENT PowerFactory، سامانه حفاظت ویژه پیشنهاد شده بر روی شبکه‌های IEEE 39-Bus و Nordic32 پیاده‌سازی و آزمایش شده است. نتایج شبیه‌سازی‌های انجام شده در شرایط وقوع اغتشاش‌های N-1، N-2 و N-3  مختلف و مقایسه آن‌ها با روش‌های پیشین، تائید کننده عملکرد مناسب روش پیشنهاد شده است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

A Novel Special Protection System to Prevent Long-Term Voltage Instability against Graffite Attacks

نویسندگان [English]

  • S Yari 1
  • H. Khoshkhoo 2
  • E. Asadi 1
1 M Sc Student, Department of Electrical Engineering, Sahand University of Technology
2 Department of Electrical Engineering, Sahand University of Technology
چکیده [English]

Graffiti bombs are one of the modern non-destructive weapons that by causing short circuit in the power systems result in blackout in these networks. The main purpose of this paper is to propose a Special Protection System (SPS) to prevent long-term voltage instability after graffite attacks. In this SPS, the power grid is divided into several voltage control area (VCAs) in order to carry out corrective actions in a coordinated manner and reduce the risk of the instability. Then, according to the voltage stability status of each area determined by RPRI index, the proposed SPS will be used to prevent long-term voltage instability. In this paper, using the DPL environment of DIgSILENT PowerFactory software, the proposed SPS is implemented and tested on IEEE 39-Bus and Nordic32 networks. The results of simulations performed under different N-1, N-2 and N-3 contingencies and comparison of them with previous ones verify the appropriate performance of the proposed method.

کلیدواژه‌ها [English]

  • : Graffite Bombs
  • Long Term Voltage Stability
  • Special Protection System
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