Methodology for optimizing the capacity and costs of overhead transmission lines by modifying their bundle geometry

Field Patterns of Bundle Conductors and Their Electrostatic Properties

After a brief survey of water appearance in the close-to-ground layer of atmosphere, behavior of water drops in the electric field is analyzed and the mechanism of streamer formations shown. Water influence, causing corona increase, has two components: (1) discharges between conductor and passing drops and (2) streamers produced by water presence on the conductor. Results of some attempts to limit streamer formation when water is present on the conductor are reported.

A-C Corona in Foul Weather I-Above Freezing Point

This paper presents the methodology and the main results of the optimization process to increase the transmission capacity of overhead lines of 500, 750 and 1000 kV by changing the geometry of the bundles using a new heuristic algorithm. The optimization process is done respecting the insulating distances, the maximum electric field at a height of 1.5 meters from the ground surface, the electric field balance in the conductors, and avoiding the generation of corona effect. Using this methodology it was possible to substantially increase the capacity of transmission lines using bundles with moderate dimensions, and having different geometries from previous authors.

Enhancement the overhead transmission lines' capacity by modifying the bundle geometry using heuristics algorithms

Optimal selection and positioning of conductors in multi-circuit overhead transmission lines using evolutionary computing

This bibliography presents references to significant literature in the field of extra-high-voltage (EHV) power systems. The most important references have been included up to 1946. Because of the rapid developments, since 1947, in the United States and abroad, of extra-high-voltage research and operating experience, the effort has been made to include all significant references from 1947 through 1957. Thus a total of 839 references are given, which are distributed chronologically as shown in Table I. It is clear that interest in extra-high voltages has increased steadily from the end of World War II to 1954, and is continuing to the present. These references are from more than 100 periodicals, published in 20 countries. The international character of the extrahigh- voltage art is therefore evident. For instance, the 173 references listed for 1956 and 1957 pertain to the following countries: United States 33%; USSR, 24%; Germany, 1 1%; Sweden, 8%; Switzerland, 6%; Great Britain, 4%; Canada, 3%; France, 3%; Finland, 2%; Japan and Italy, 1% each; other countries, 2%.

P. A. Abetti

Papers

Bibliography on extra-high-voltage systems