Spatial Distribution of Ion Current Around HVDC Bundle Conductors

The ion flow from the bundle conductors of HVDC transmission lines is different from that of a single conductor. This paper presents systematic research on the spatial distribution of ion current due to corona around bundle conductors. A corona cage capable of fitting different bundle conductors is designed for the experiments. Extensive measurements are carried out in different voltages and polarities for four kinds of bundle conductors. To determine the roughness factor of the wires, the experiment with a single conductor is also included. The numerical methods, based on computation along the electric flux lines or based on triangle meshes, are used to calculate the ion current distribution around bundle conductors. Charge density distributions on different bundles are compared. To improve the accuracy of the mesh-based method, a new scheme of surface charge density distribution on the bundle is proposed. The characteristics of the ion current distribution and the total ion current of the bundle are also analyzed in this paper.

[1]  M. Abdel-Salam,et al.  Monopolar Corona on Bundle Conductors , 1982, IEEE Transactions on Power Apparatus and Systems.

[2]  Wasyl Janischewskyj,et al.  Analysis of Corona Losses on DC Transmission Lines Part II - Bipolar Lines , 1969 .

[3]  Luo Zhaonan.  A Hybrid Method for the Simulation of Ion Flow Field of HVDC Transmission Lines Based on Finite Element Method and Finite Volume Method , 2011 .

[4]  Q. Song,et al.  A second-order accurate finite volume method for the computation of electrical conditions inside a wire-plate electrostatic precipitator on unstructured meshes , 2009 .

[5]  X. Cui,et al.  Analysis of the Ionized Field Under HVDC Transmission Lines in the Presence of Wind Based on Upstream Finite Element Method , 2010, IEEE Transactions on Magnetics.

[6]  Tsutomu Ikeda,et al.  Calculation of ION Flow Fields of HVDC Transmission Lines By the Finite Element Method , 1981, IEEE Transactions on Power Apparatus and Systems.

[7]  P. Sarma Maruvada,et al.  Corona Performance of High Voltage Transmission Lines , 2000 .

[8]  A. J. Schwab,et al.  Numerical solution of nonstationary charge coupled problems , 1999 .

[9]  James F. Hoburg,et al.  HVDC transmission line computations using finite element and characteristics method , 1986 .

[10]  S. Muzaferija,et al.  Finite volume method for calculation of electrostatic fields in electrostatic precipitators , 2009 .

[11]  Rong Zeng,et al.  Calculation of the ion flow field of AC-DC hybrid transmission lines , 2009 .

[12]  Zhong-Xin Li,et al.  Numerical Calculations of Monopolar Corona From the Bare Bundle Conductors of HVDC Transmission Lines , 2009, IEEE Transactions on Power Delivery.

[13]  G. S. Peter Castle,et al.  Modeling of corona characteristics in a wire-duct precipitator using the charge simulation technique , 1987, IEEE Transactions on Industry Applications.

[14]  Rong Zeng,et al.  Discussion on the Deutsch Assumption in the Calculation of Ion-Flow Field Under HVDC Bipolar Transmission Lines , 2010, IEEE Transactions on Power Delivery.

[15]  Walther Deutsch,et al.  Über die Dichteverteilung unipolarer Ionenströme , 1933 .

[16]  M. Abdel-Salam,et al.  Finite element solution of monopolar corona on bundle conductors , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[17]  Francesco Lattarulo,et al.  ION FLOW FROM TWO-CONDUCTOR BUNDLE EMITTERS , 1998 .

[18]  J. Hoburg,et al.  Donor cell-finite element descriptions of wire-duct precipitator fields, charges and efficiencies , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[19]  Tadasu Takuma,et al.  A Very Stable Calculation Method for Ion Flow Field of HVDC Transmission Lines , 1987, IEEE Transactions on Power Delivery.

[20]  Wasyl Janischewskyj,et al.  Analysis of Corona Losses on DC Transmission Lines: I - Unipolar Lines , 1969 .

[21]  F. Peek.  Dielectric Phenomena in High Voltage Engineering , 2002 .

[22]  K. Adamiak,et al.  Adaptive approach to finite element modelling of corona fields , 1992, Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting.

[23]  N. A. Kapzow.  Elektrische Vorgänge in Gasen und im Vakuum , 1955 .

[24]  R. S. Sigmond.  The unipolar corona space charge flow problem , 1986 .

[25]  John S. Townsend,et al.  XI. The potentials required to maintain currents between coaxial cylinders , 1914 .

[26]  W. Janischewskyj,et al.  Finite Element Solution for Electric Fields of Coronating DC Transmission Lines , 1979, IEEE Transactions on Power Apparatus and Systems.

[27]  Zhibin Zhao,et al.  Analysis of the Electric Field and Ion Current Density Under Ultra High-Voltage Direct-Current Transmission Lines Based on Finite Element Method , 2007, IEEE Transactions on Magnetics.