روشی جدید برای تخمین مدار معادل تونن با استفاده از اندازه‌گیری‌های محلی

نوع مقاله : علمی-پژوهشی

نویسندگان

1 دانشکده برق دانشگاه صنعتی سهند

2 هیئت علمی دانشگاه صنعتی سهند تبریز

چکیده

این مقاله روشی را برای تخمین دقیق مدار معادل تونن مشاهده شده از یک شین هدف با استفاده از داده‌های اندازه‌گیری محلی ارائه می‌کند. روش پیشنهادی تنها بر میزان ولتاژ و توان منتقل شده از طریق شین هدف متکی است و آن را قادر می سازد که مدار معادل تونن را با استفاده از داده های ارائه شده توسط WAMS و/یا SCADA پیش بینی کند. علاوه بر این، به دلیل اتکا به اندازه‌گیری‌های محلی، روش پیشنهادی به عنوان ابزاری مناسب برای طرح‌های اقدام اصلاحی توزیع‌شده برای تخمین حاشیه بارگذاری و اجرای خودکار اقدامات اصلاحی، حتی در غیاب داده‌های اندازه‌گیری شده در سطح وسیع، عمل می‌کند. شبیه‌سازی‌های حوزه زمانی انجام‌شده در شبکه‌های توزیع Nordic32، IEEE 39-bus و IEEE 33-bus، و مقایسه این نتایج با روش‌های پیشنهادی قبلی در مقالات، نشان می‌دهد که الگوریتم پیشنهادی توپولوژی و تغییرات بارگذاری سیستم را در نظر می‌گیرد و به طور دقیق مدار معادل تونن را در هر دو سیستم انتقال و توزیع تخمین می زند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

A Novel Method to Estimate Thevenin Equivalent Circuit Using Local Measurements

نویسندگان [English]

  • Pourya Akbarzadeh Aghdam 1
  • Hamid Khoshkhoo 2
1 Faculty of Electrical Engineering, Sahand University of Technology
2 Faculty of Electrical Engineering, Sahand University of Technology
چکیده [English]

This paper presents an approach to precisely estimate the Thevenin equivalent circuit (TEC) observed from a target bus by utilizing locally measured data. The proposed method relies solely on the voltage magnitude and the power transmitted through the target bus, enabling it to forecast TEC using data provided by WAMS and/or SCADA. Moreover, due to its reliance on local measurements, the proposed method serves as a suitable tool for distributed remedial action schemes to estimate the loadability margin and automatically execute corrective actions, even in the absence of wide-area measured data. Time-domain simulations conducted on Nordic32, IEEE 39-bus, and IEEE 33-bus distribution networks, and the comparison of these results with previously proposed methods in the literature, demonstrate that the proposed algorithm takes into account the system's topology and loading changes and accurately estimates the TEC in both transmission and distribution systems.

کلیدواژه‌ها [English]

  • Thevenin equivalent circuit
  • Power system analysis
  • Voltage stability assessment
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