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access icon free Predictive calculation of ion current environment of dc transmission line based on ionised flow model of embedded short-term wind speed

  • Author(s): Yong Yi 1 ; Zhengying Chen 2 ; Wenxi Tang 2 ; Liming Wang 1, 2
    • View affiliations
  • Source: Volume 12, Issue 16, 11 September 2018, p. 3837 – 3843
    DOI:  10.1049/iet-gtd.2018.0054 , Print ISSN 1751-8687, Online ISSN 1751-8695
© The Institution of Engineering and Technology
Received 09/01/2018, Accepted 27/06/2018, Revised 27/04/2018, Published 04/07/2018

The predictive calculation and wind effect on the ion flow environment of dc transmission line are evaluated by embedded short-term wind speed based ionised flow model. The wind has a major impact on the electric field and ion current density profiles. In the ionised flow model of embedded short-term wind speed, the short-term wind speed is calculated by using time series model and Kalman filter algorithm. The ionised field considering short-term wind speed is solved by finite-element method with acceleration technique and time-domain finite volume method. The algorithm is validated by the coaxial cylinder electrode configuration and practical bipolar dc transmission configuration. Computational results are made to provide a physical understanding of wind effect on the corona formation process. In the timescale of long-term prediction, the time evolution behaviour of ground-level ion current density and electric field with time-varying wind speed is estimated.

Inspec keywords: HVDC power transmission; electrochemical electrodes; finite element analysis; time series; electric fields; finite volume methods; corona; current density; Kalman filters; power transmission lines; wind power; time-domain analysis

Other keywords: time-varying wind speed; ion current environment; time series model; wind effect; practical bipolar dc transmission configuration; time evolution behaviour; finite-element method; electric field; ionised flow model; Kalman filter algorithm; corona formation process; predictive calculation; ion current density profiles; dc transmission line; embedded short-term wind speed; coaxial cylinder electrode configuration; acceleration technique; time-domain finite volume method; ground-level ion current density

Subjects: Finite element analysis; Other topics in statistics; Filtering methods in signal processing; Power transmission lines and cables; d.c. transmission; Electrochemical conversion and storage

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