Calculation of the ion flow field of AC-DC hybrid transmission lines

Author

Li, Wenyuan ; Zhang, Boming ; He, Jinwei ; Zeng, Rong ; Li, Xin ; Wang, Qijie

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

Volume

3

Issue

10

fYear

2009

fDate

10/1/2009 12:00:00 AM

Firstpage

911

Lastpage

918

Abstract

A simulation method to calculate the ion flow field of AC-DC hybrid lines is proposed. The charge simulation method (CSM) and the finite element method (FEM) are applied to calculate the electric field, while a time-dependent upwind differential algorithm is applied to calculate the migration of space charges. Furthermore, a variable time-step discretisation method is introduced to accelerate the computational process. The calculation results of ground level electric field and ion current density of a reduced-scale AC-DC hybrid line model are compared with previous experimental and calculating works. Satisfactory agreement is obtained between our calculation results and the experimental ones. As an application, the ion flow field of a hybrid 1000 kV AC/800 kV DC transmission line is simulated and analysed.

Keywords

AC-DC power convertors; hybrid power systems; power system simulation; power transmission lines; AC-DC hybrid transmission lines; DC transmission line; charge simulation method; electric field; finite element method; ion flow field; space charges; time-dependent upwind differential algorithm; time-step discretisation method;

fLanguage

English

Journal_Title

Generation, Transmission & Distribution, IET

Publisher

iet

ISSN

1751-8687

Type

jour

DOI

10.1049/iet-gtd.2009.0020

Filename

5270257