Abstract
A general method is suggested for computing the electric potential and field in the vicinity of bundled bipolar dc transmission lines with any number of subconductors either smooth or stranded. The method is based on the well-known charge simulation technique and the principles of images. Each subconductor is simulated by a number of line charges. A set of equations is formulated and solved simulataneously to yield equipotential surfaces which almost coincide on the subconductor surfaces. The method entails a considerable improvement on previous methods as regards the accuracy and the computational time. It is applied not only to bipolar lines but also to ac lines. In order to check the calculated field values, corona threshold levels were computed using these values for a laboratory model of a bipolar line. At the same time, the corona threshold levels were measured for the model with 2, 3 and 4-subconductors per pole. The agreement between the computed and measured threshold levels is satisfactory.
| Original language | English |
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| State | Published - 1977 |
ASJC Scopus subject areas
- General Engineering