Two Newton-Based Improved Algorithms for AC/DC Hybrid Power Flow

The conventional Newton method faces plenty of challenges in calculating the power flow in AC/DC hybrid systems. This paper initially establishes a unified model for AC-DC systems to enable uniform iteration, mainly considering the multi-terminal DC based on VSC. Subsequently, an augmented rectangul...

Full description

Saved in:
Bibliographic Details
Published in2024 8th International Conference on Power and Energy Engineering (ICPEE) pp. 319 - 326
Main Authors Su, Yinsheng, Wang, Nanyu, Xu, Guanghu, Gao, Qin, Mu, Tongpeng, Yao, Haicheng, Li, Bao, Li, Yujun
Format Conference Proceeding
LanguageEnglish
Published IEEE 20.12.2024
Subjects
AC/DC hybrid system
augmented rectangular coordinate
Computational efficiency
Faces
Hybrid power systems
Jacobian matrices
Load flow
Mathematical models
Newton method
optimal multiplier
Oscillators
power flow
retaining nonlinearity
Taylor series
Vectors
Online AccessGet full text
DOI10.1109/ICPEE64457.2024.10949976

Cover

More Information
Summary:The conventional Newton method faces plenty of challenges in calculating the power flow in AC/DC hybrid systems. This paper initially establishes a unified model for AC-DC systems to enable uniform iteration, mainly considering the multi-terminal DC based on VSC. Subsequently, an augmented rectangular coordinate model that incorporates converter losses is developed. In the rectangular coordinate system, the power flow equation is in quadratic form, and its Taylor expansion can be exactly expanded to the third term. Further, two improved algorithms, the retaining nonlinearity method and the optimal multiplier method, are proposed and implemented for the calculations. The computational results demonstrate their superior efficiency and precision.
DOI:10.1109/ICPEE64457.2024.10949976