For access to this article, please select a purchase option:
IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.
Your recommendation has been sent to your librarian.
The electromagnetic environment of AC-DC parallel transmission line is more complex than that of single DC transmission line. Therefore, the traditional numerical method and finite element method are difficult to calculate the mixed ion flow field of parallel transmission line. Traditional meshless algorithm is fast and accurate, but it does not possess the property of Kronecker-δ function and cannot directly impose the boundary crossing constraint condition. Therefore, an algorithm based on Meshless radial point interpolation is proposed. The shape function of the traditional meshless method is modified by the polynomial radial point interpolation method, so that the shape function has the property of Kronecker-δ function, and the meshless method has the ability to directly impose boundary constraints. Combined with the influence factors of the AC circuit on the mixed ion flow field, the mixed ion flow field can be calculated accurately. Take a 500kV and ±800kV parallel line as an example. According to the simulation calculation and experimental measurement analysis, it is considered that this method can better reflect the distribution law of mixed ion flow field, and can be applied to the research of mixed ion flow field of AC-DC parallel transmission lines.
Inspec keywords: interpolation; DC transmission networks; power transmission lines; polynomial approximation; electromagnetic fields
Subjects: a.c. transmission; Power transmission lines and cables; d.c. transmission; Interpolation and function approximation (numerical analysis)