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Online Prediction and Correction of Static Voltage Stability Index Based on Extreme Gradient Boosting Algorithm

Authors :
Huiling Qin
Shuang Li
Juncheng Zhang
Zhi Rao
Chengyu He
Zhijun Chen
Bo Li
Source :
Energies, Vol 17, Iss 22, p 5710 (2024)
Publication Year :
2024
Publisher :
MDPI AG, 2024.

Abstract

With the increasing integration of renewable energy sources into the power grid and the continuous expansion of grid infrastructure, real-time preventive control becomes crucial. This article proposes a real-time prediction and correction method based on the extreme gradient boosting (XGBoost) algorithm. The XGBoost algorithm is utilized to evaluate the real-time stability of grid static voltage, with the voltage stability L-index as the prediction target. A correction model is established with the objective of minimizing correction costs while considering the operational constraints of the grid. When the L-index exceeds the warning value, the XGBoost algorithm can obtain the importance of each feature of the system and calculate the sensitivity approximation of highly important characteristics. The model corrects these characteristics to maintain the system’s operation within a reasonably secure range. The methodology is demonstrated using the IEEE-14 and IEEE-118 systems. The results show that the XGBoost algorithm has higher prediction accuracy and computational efficiency in assessing the static voltage stability of the power grid. It is also shown that the proposed approach has the potential to greatly improve the operational dependability of the power grid.

Details

Language :
English
ISSN :
19961073
Volume :
17
Issue :
22
Database :
Directory of Open Access Journals
Journal :
Energies
Publication Type :
Academic Journal
Accession number :
edsdoj.7027863c1a7f47e0a84e015198293700
Document Type :
article
Full Text :
https://doi.org/10.3390/en17225710