ZHENG Xin,QI Lei,SUN Xiaofeng,et al.Optimal Allocation Method of Grid-connected Power for Renewable Energy Based on Newton Iterative Sensitivity Collaboration[J].Automation of Electric Power Systems,2025,49(5):155-163.
ZHENG Xin,QI Lei,SUN Xiaofeng,et al.Optimal Allocation Method of Grid-connected Power for Renewable Energy Based on Newton Iterative Sensitivity Collaboration[J].Automation of Electric Power Systems,2025,49(5):155-163. DOI: 10.7500/AEPS20240514003.
Optimal Allocation Method of Grid-connected Power for Renewable Energy Based on Newton Iterative Sensitivity Collaboration
The integration of a large number of distributed power generation units results in weakening power grid strength
which in turn causes harmonic resonance of output current of photovoltaic cluster
threatening the safe and stable operation of power system. Therefore
considering the constraint of harmonic resonance
based on the source and grid impedance aggregation model and stability index of the system
the objective function of the optimal stability margin for the system under a certain grid-connected power of renewable energy is constructed. The Newton numerical iteration is integrated into the solving process of Lagrange condition extremum to achieve rapid adjustment of impedance sensitivity towards consistency. Aiming at the application scenarios of constant power and the allocation of maximum grid-connected power
an optimal allocation method of grid-connected power based on Newton iterative sensitivity collaboration is proposed. Compared with conventional cluster power allocation methods and similar optimal allocation methods
the proposed optimal power allocation method has high solving efficiency and low computing power requirements. Finally
an IEEE 33-bus case is built on the real-time hardware-in-the-loop digital simulation system to validate the proposed method.
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