Correction Control Model of L-Index Based on VSC-OPF and BLS Method

Yude Yang, Jingru Long, Lizhen Yang (), Shuqin Mo and Xuesong Wu
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Yude Yang: Guangxi Key Laboratory of Power System Optimization and Energy-Saving Technology, School of Electrical Engineering, Guangxi University, Nanning 530004, China
Jingru Long: Guangxi Key Laboratory of Power System Optimization and Energy-Saving Technology, School of Electrical Engineering, Guangxi University, Nanning 530004, China
Lizhen Yang: School of Economics and Management, Guangxi Vocational University of Agriculture, Nanning 530004, China
Shuqin Mo: School of Electrical Engineering, Guangxi University, Nanning 530004, China
Xuesong Wu: School of Electrical Engineering, Guangxi College of Water Resources and Electric Power, Nanning 530023, China

Sustainability, 2024, vol. 16, issue 9, 1-19

Abstract: With the advancement of artificial intelligence (AI) technology, the real-time measurement and control technology of power systems has also progressed. This paper proposes a correction control model for L-indexes based on voltage stability constrained optimal power flow (VSC-OPF) and a broad learning system (BLS) (BLS-VSC-OPF). This model aims to quickly assess the system’s voltage stability and accurately correct the operation mode when the voltage stability indexes are out of the security range. Firstly, the BLS is used to predict the L-index and to analyze the voltage stability of the power system. Secondly, the approximate first-order sensitivity of the L-index is calculated by the combination of the BLS and the perturbation method. This method solves the problem of the complex sensitivity derivation process in the modeling process of the VSC-OPF model. Meanwhile, when the L-index exceeds the threshold, the BLS and VSC-OPF models are combined to correct this operation mode. The feasibility of the proposed method is verified by the simulation of IEEE-30, IEEE-118, and 1047 bus systems. Finally, the BLS-VSC-OPF model is compared with the linear programming correction model based on BLS (BLS-LPC). The results show that the BLS-VSC-OPF model provides a better correction and control performance.

Keywords: BLS; correction; L-index; optimal power flow; sensitivity; static voltage stability (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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