137 / 2022-07-05 15:08:55
Linearization of AC Power Flow Equation Based on Least-squares Approximation
Linear power flow model, least-squares approximation, Taylor expansion principle, approximation region, power flow calculation
Final Paper
Runfeng Zhong / Huazhong University of Science and Technology
Ruanming Huang / State Grid Shanghai Economic and Technical Research Institute
Xiaohui Wang / State Grid Shanghai Economic and Technical Research Institute
Fei Fei / State Grid Shanghai Economic and Technical Research Institute
Ning Chen / State Grid Energy Research Institute
Lishen Wei / Huazhong University of Science and Technology
Xiaomeng Ai / Huazhong University of Science and Technology
Jiakun Fang / Huazhong University of Science and Technology
Linearization of nonlinear power flow equation is of great significance to power system analysis because it can reduce computational burden and guarantee theoretical convergence, the improvement of whose accuracy is a crucial research topic. The existing Taylor expansion based linear power flow models may not perform accurately when the system operating point is far from the expansion point. In this paper, we propose a linear power flow model with minimum mean square error in the approximation region from the perspective of function approximation theory, which is different from the local mathematical properties inherent in the Taylor expansion principle. The proposed model can consider the information of the AC power flow equation in the defined approximation region instead of just using a base point. Therefore, the overall accuracy of the model can be greatly improved. Numerical results verify the effectiveness of the proposed least-squares approximation based linear power flow model.

 
Important Date
  • Conference Date

    Nov 03

    2022

    to

    Nov 05

    2022

  • Aug 01 2022

    Draft paper submission deadline

  • Nov 04 2022

    Registration deadline

  • Nov 05 2022

    Contribution Submission Deadline

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Huazhong University of Science and Technology
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