Title:Meshless Improved Algorithm for Ion Flow Field in Large-Span AC-DC
Parallel Lines
Volume: 16
Issue: 6
Author(s): Ruiyong Zhang, Chenlin Cai*, Haibo Xi and Cheng Yao
Affiliation:
- College of Electrical Engineering
and New Energy, China Three Gorges University, Yichang, China
Keywords:
Large-span AC/DC parallel transmission line, mixed ion flow field, mixed ion current density, meshless method, Kaptzov assumption, radial point interpolation, boundary conditions.
Abstract:
Background: The research in this paper aims to address the effect of large-span AC lines
on ion currents in parallel DC lines. This paper proposes an algorithm for solving mixed ion flow
fields based on meshless radial point interpolation, which can accurately solve the ion flow field of
large-span AC-DC parallel lines.
Methods: The shape function of the traditional meshless method is modified by polynomial radial
point interpolation so that the shape function can satisfy the Kronecker-δ function property at the
point where the boundary constraints are to be imposed so as to meet the requirements of directly
applying the boundary constraints; Combined with the influencing factors of the AC line on the
mixed ion flow field, the mixed ion flow field and the ion current density value was obtained.
Results: Using the proposed algorithm, the relative error of ion current density can be reduced to
4.5%, and the relative error of ion flow field can be reduced to 24%.
Conclusion: The simulation results are consistent with the measurement results, which proves the
correctness and practicability of the mixed ion flow field solution algorithm based on meshless radial
point interpolation.
