Fast Assessment Method for Transient Voltage Stability of Photovoltaic Receiving‐End Grid

The incorporation of renewable energy on a broad scale into power grids increases the complexity to the issue of transient voltage stability in power systems. This research presents a rapid evaluation technique for assessing the stability of voltage fluctuations in power grids that receive electrici...

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Bibliographic Details
Published inAdvances in Mathematical Physics Vol. 2024; no. 1
Main Authors Qu, Ying, Han, Xiaoqing, Meng, Tao, Liu, Xinyuan, Chen, Danyang, Niu, Zhewen
Format Journal Article
LanguageEnglish
Published New York John Wiley & Sons, Inc 08.10.2024
Hindawi Limited
Subjects
Alternative energy sources
Analysis
Artificial intelligence
Complexity
Differential equations
Electric contacts
Electric power grids
Electric power systems
Electricity distribution
Energy resources
Equilibrium
Induction electric motors
Induction motors
Methods
Photovoltaic cells
Renewable resources
Simulation
Solar energy industry
Stability analysis
Transient stability
Voltage stability
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Summary:The incorporation of renewable energy on a broad scale into power grids increases the complexity to the issue of transient voltage stability in power systems. This research presents a rapid evaluation technique for assessing the stability of voltage fluctuations in power grids that receive electricity from photovoltaic sources. At first, a receiving‐end system model was developed, which includes photovoltaics, and an alternative circuit of the virtual induction motor (IM) is obtained by utilizing the Thevenin equivalent. Second, the torque balance equation and the Kirchhoff voltage equation are interconnected to determine the unstable slip of the IM following a malfunction. Finally, by merging the unstable slip with the conventional transient stability discriminant index, the effects of different photovoltaic outputs, IM ratios, and system contact impedances on transient voltage stability are investigated. The proposed method avoids the computational burden of solving the differential‐algebraic equations describing the complex transient processes of the IM. It also obviates the necessity of iteratively modifying the receiving load or fault clearance time in the simulation platform to achieve the constrained stability condition of the system’s transient voltage. The transient stabilization of voltage results is efficiently obtained by directly solving algebraic equations.
ISSN:1687-9120
1687-9139
DOI:10.1155/2024/7361194