Control of the electric strength of long air gaps

Journal Article · Mon Nov 01 04:00:00 EST 1982 · IEEE Trans. Power Appar. Syst.; (United States)

DOI:https://doi.org/10.1109/TPAS.1982.317405· OSTI ID:6003570

Alexandrov, G N; Podporkyn, G V

A method for optimization of a conductor bundle structure is presented based on the criterion of the maximum electric strength of the conductor bundle-to-ground plane air gap. This type of gap is chosen because it has the simplest configuration of electric field and largely determines the performance and cost of power transmission lines. The optimization procedure consists in searching an optimum location of subconductors of a given diameter. An increase in the electric strength of a bundle-to-plane air gap is achieved due to the screening effect of space charges formed in streamer zones near subconductors during discharge development. Equality of streamer zones near all subconductors for the 50 per cent breakdown voltage is assumed to be the optimization criterion. Calculations show that the electric strength of bundle-to-plane gaps can be considerably increased. The greater the number of subconductors the higher the optimization efficiency. Thus, for an 8-subconductor bundle the electric strength increases 37 per cent compared with the conventional symmetric bundle. Theoretical results are experimentally confirmed for two structures of conductor bundles.

• OSTI ID: 6003570
• Journal Information: IEEE Trans. Power Appar. Syst.; (United States), Journal Name: IEEE Trans. Power Appar. Syst.; (United States) Vol. PAS-101:11; ISSN IEPSA
• Country of Publication: United States
• Language: English

Related Subjects

200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
BREAKDOWN
COST
DATA
EFFICIENCY
ELECTRIC FIELDS
EXPERIMENTAL DATA
INFORMATION
NUMERICAL DATA
OPTIMIZATION
PERFORMANCE
POWER TRANSMISSION LINES
SPACE CHARGE