برآورد هم زمان متغیرهای حالت و توپولوژی شبکه برای مدل سازی زمان واقعی سیستم های قدرت
|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|56862||2016||9 صفحه PDF||سفارش دهید||7698 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Electric Power Systems Research, Volume 133, April 2016, Pages 338–346
A combined Weighted Least Squares (WLS) and Weighted Least Absolute Value (WLAV) strategy is proposed to devise a joint state and network topology (S&T) estimator for power system real-time modeling. This is accomplished by formulating S&T coestimation as a multi-objective optimization problem combining both analog measurement residuals and operational conditions dictated by circuit-breaker statuses. The former are treated as arguments of a conventional WLS function, whereas the latter exploits the selective properties of the LAV criterion. The paper presents the theoretical framework for S&T coestimation, and proposes a specialized primal/dual interior point method to solve the corresponding optimization problem. Results obtained by applying the joint estimator to the IEEE 24-bus test system and to a real metropolitan system in Southern Brazil are reported in the paper. They indicate that S&T coestimation is a very promising approach to provide simultaneous solutions to both real-time modeling problems.