Open AccessAn agent‐based fast concurrent prediction scheme for transient and short‐term voltage instability
Author(s) -
Lashgari Mahmoud,
Shahrtash Seyed Mohammad
Publication year - 2021
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/gtd2.12250
Subject(s) - transient (computer programming) , term (time) , fault (geology) , control theory (sociology) , electric power system , computer science , polynomial , voltage , algorithm , power (physics) , mathematics , engineering , artificial intelligence , mathematical analysis , physics , control (management) , quantum mechanics , seismology , electrical engineering , geology , operating system
A novel agent‐based online prediction method is presented in this paper, to predict the status of both transient and short‐term voltage (STV) stability, against fault occurrence. In the proposed method, the trajectories of the relative frequency deviation (Δ F ) and the power imbalance (Δ P ) are estimated by employing the third‐degree polynomial curve fitting method. By tracking the estimated trajectories on Δ F –Δ P plane and checking some simple defined rules, an early prediction of both transient and STV instability is achieved in an organized multi‐agent system (MAS). In order to evaluate the performance of the proposed algorithm, the method has been tested on IEEE 39‐bus system, IEEE 118‐bus system and IEEE Nordic test system. Based on the obtained results, the proposed algorithm has an overall accuracy of 99.5% under symmetrical and asymmetrical faults, PMU measurement error, different operating points and topological changes.