Influence of Wind and Conductor Potential on Distributions of Electric Field and Ion Current Density at Ground Level in DC High Voltage Line to Plane Geometry

Hara, Masanori; Hayashi, Noriyuki; Shiotsuki, Kenshi; Akazaki, Masanori

doi:10.1109/tpas.1982.317145

Cited by 79 publications

(25 citation statements)

References 5 publications

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“…Both Schemes emloy the boundary condition BC2(a), which is determined from Kaptzov's assumption. 1 The profiles obtained by the two schemes practically coincide with each other and agree satisfactorily with the available experimental results, 7 as shown in Figure 18. Less than ten iterations are required for convergence in all these cases.…”

Section: Numerical Tests On Line-plane Geometry In Still Airsupporting

confidence: 84%

“…The ground level profiles of the electric field intensity calculated for different voltage levels agree satisfactorily with the experimental results available in the literature. 7 Under wind conditions, good initial values are required to start the iterative process; a simple technique has been suggested to obtain the initial values. For the configuration considered, good convergence is obtained for wind velocity in the range 0-8 m/s.…”

Section: Discussionmentioning

confidence: 99%

“…The artificial boundary (dashed lines) is located at a distance 3H above and 4H laterally away from the conductor, where H is the conductor There is no analytical solution for this geometry, but measurement data 7 are available at several voltage levels (V 0 ϭ 120, 200, 300 kV) for the chosen geometry. method for solving ionized fields, pt.…”

Section: Numerical Tests On Line-plane Geometry In Still Airmentioning

confidence: 99%

See 2 more Smart Citations

A New Method for Solving Ionized Fields of Unipolar HVDC Lines Including Effect of Wind. Part Ii: Iterative Techniques and Numerical Tests

Raghuveer

Ciric

1997

Int. J. Numer. Model.

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Section: Numerical Tests On Line-plane Geometry In Still Airsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Numerical Tests On Line-plane Geometry In Still Airmentioning

confidence: 99%

See 1 more Smart Citation

A New Method for Solving Ionized Fields of Unipolar HVDC Lines Including Effect of Wind. Part Ii: Iterative Techniques and Numerical Tests

Raghuveer

Ciric

1997

Int. J. Numer. Model.

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“…The results have shown that the total corona losses increased with wind speed for the bipolar model while the change could be neglected for the conductor‐to‐plane arrangement at low wind speed. However, the increase of the corona loss was also observed in [2, 3] for the unipolar model with a longer gap between the conductor and plane. It was explained by the fact that a larger number of ions were blown away from the inter‐electrode space when the electric field was weak.…”

Section: Introductionmentioning

confidence: 54%

Method of local characteristics for calculating electric field and ion current of HVDC transmission lines with transverse wind

Qiao

Zou

Yuan

et al. 2017

IET Generation, Transmission & Distribution

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“…Hara's test model [8] is uscd. In this model, the line conductor is a smooth cylinder with radius ro = 0.25 cm at height H = 2 m. The corona onset field, E,, in kV/cm is determined from F'eek's law…”

Section: Line-plane Geometrymentioning

confidence: 99%

On the corona voltage-current characteristic of unipolar HVDC transmission lines

Li¹,

Raghuveer²,

Ciric³

Proceedings of Conference on Electrical Insulation and Dielectric Phenomena - CEIDP '96

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Simplified analytical analysis of ionized fields associated with HVDC transmission lines is possible if it is based on Deutsch's assumption. The resulting voltagecurrent (V-I) characteristic may be conveniently used to calculate the power losses of a HVDC transmission line. However, such an approach has been criticized because Deutsch's assumption is considered invalid for the line-plane geometry. This paper verifies the validity of the V-I characteristic thus obtained by comparing it with numerical results which are generated using a new method developed by the authors, in which Deutsch's assumption is not employed.using Deutsch's assumption. Some authors [3,4] have argued that Deutsch's assumption is not valid for a lineplane geometry even in the absence of wind. Their studies show that the flux lines of an ionized field do deviate from those of the corresponding charge-free field.Since an analytical expression of the V-I characteristic is a convenient form to use in the design of a HVDC transmission line, it is of practical importance to verify the validity of Deutsch's assumption in the absence of wind. In this paper, results generated by using a new numerical method, developed by the authors [5,6,7], are compared with those obtained by employing the analytical method in [2]. The numerical method does not resort to Deutsch's assumption.

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Influence of Wind and Conductor Potential on Distributions of Electric Field and Ion Current Density at Ground Level in DC High Voltage Line to Plane Geometry

Cited by 79 publications

References 5 publications

A New Method for Solving Ionized Fields of Unipolar HVDC Lines Including Effect of Wind. Part Ii: Iterative Techniques and Numerical Tests

A New Method for Solving Ionized Fields of Unipolar HVDC Lines Including Effect of Wind. Part Ii: Iterative Techniques and Numerical Tests

Method of local characteristics for calculating electric field and ion current of HVDC transmission lines with transverse wind

On the corona voltage-current characteristic of unipolar HVDC transmission lines

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